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The Federal Taxing Power: A Primer

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The Federal Taxing Power: A Primer
September 28, 2020
The Taxing and Spending Clause of the U.S. Constitution provides Congress with the power to
tax. The U.S. Supreme Court has interpreted Congress’s power to tax broadly, except for a few
Milan N. Ball
cases decided in the 1920s and 1930s, in which the Court invalidated taxes that were functionally
Legislative Attorney
regulatory penalties on the ground that they exceeded Congress’s legislative authority. But while

the Taxing and Spending Clause grants Congress broad authority to lay and collect taxes, the
Constitution also contains clauses that expressly circumscribe the taxing power.

The meanings of some of these express limitations appear evident, and thus are less subject to dispute. The Origination
Clause requires legislation imposing taxes to begin in the U.S. House of Representatives. The Taxing and Spending Clause
authorizes Congress to lay taxes for federal debts, the common defense, and the general welfare. Under the Export Clause,
Congress may not tax articles exported from any state.
Much less clear are the meaning of, and distinction between, direct and indirect taxes. Pursuant to Article I, Section 2, clause
3 and Article I, Section 9, clause 4 of the U.S. Constitution, direct taxes are subject to the rule of apportionment, meaning
Congress must set the total amount to be raised by the direct tax, then divide that amount among the states according to each
state’s population. The lack of clarity surrounding the meaning of a direct tax ultimately led to the adoption of the Sixteenth
Amendment, which authorizes Congress to impose taxes on income without regard to the rule of apportionment. Article I,
Section 8, clause 1 of the U.S. Constitution subjects duties, imposts, and excise taxes —collectively referred to as indirect
taxes—to the rule of uniformity. The rule of uniformity requires an indirect tax to operate in the same manner throughout the
United States. The U.S. Supreme Court has not fully explained what, in its view, distinguishes direct taxes from indirect
taxes.
In addition to raising revenue, Congress also uses its taxing power to regulate private conduct. In cases where Congress has
enacted a “tax” to compel adherence to a regulatory scheme that it could not impose directly using its other enumerated
powers, the question of whether the Supreme Court will uphold a “tax” under the taxing power turns on whether the Court
views the “tax” as the functional equivalent of a regulatory penalty. In a few cases, the Court has invalidated penalties
disguised as taxes because, in its view, they exceeded the scope of Congress’s taxing power. Central to this analysis is
whether the characteristics of the “tax” are similar to traditional taxes and whether the “tax” is similar to a regulatory penalty
in that it inflicts punishment for an unlawful act or omission.
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Contents
Introduction ................................................................................................................... 1
The Origination Clause .................................................................................................... 3
The Export Clause........................................................................................................... 5
Direct Taxes and the Rule of Apportionment ....................................................................... 7
Indirect Taxes and the Rule of Uniformity......................................................................... 10
Taxes for Federal Debts, Defense, or the General Welfare ................................................... 12
Taxes to Regulate Conduct ............................................................................................. 13
Conclusion................................................................................................................... 18

Contacts
Author Information ....................................................................................................... 18

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The Federal Taxing Power: A Primer

Introduction
The Framers’ principal motivation for granting Congress the power to tax in the U.S. Constitution
was to provide the national government with a mechanism to raise a “regular and adequate
supply” 1 of revenue and pay its debts.2 Under the predecessor Articles of Confederation, the
national government had no power to tax and could not compel states to raise revenue for national
expenditures.3 The national government could requisition funds from states to place in the
common treasury, but, under the Articles of Confederation, state requisitions were “mandatory in
theory” only.4 State governments resisted these cal s for funds.5 As a result, the national
government raised “very little” revenue through state requisitions,6 inhibiting its ability to resolve
immediate fiscal problems, such as repaying its Revolutionary War debts.7
By contrast, the Constitution provides Congress with broad authority to lay and collect taxes.
Article I, Section 8, clause 1 of the Constitution—commonly known as the Taxing and Spending
Clause8—empowers Congress “To lay and collect Taxes, Duties, Impost and Excises, to pay the
Debts and provide for the common Defence and general Welfare of the United States; but al

1 T he FEDERALIST NO. 30 (Alexander Hamilton).
2 Gillian E. Metzger, To Tax, To Spend, To Regulate, 126 HARV. L. REV. 83, 89 (2012); see Veazie Bank v. Fenno, 75
U.S. 533, 540 (1869) (“The [national government] had been reduced to the verge of impotency by the necessity of
relying for revenue upon requisitions on the States, and it was a leading object in the adoption of the Constitution t o
relieve the government, to be organized under it, from this necessity, and confer upon it ample power to provide
revenue by the taxation of persons and property.”); Bruce Ackerman, Taxation and the Constitution, COLUM. L. REV. 1,
6 (1999) (“ T he [Federalists] would never have launched their campaign against America’s first Constitution, the
Articles of Confederation, had it not been for its failure to provide adequate fiscal powers for the national
government.”); see generally T HE FEDERALIST NO. 30 (Alexander Hamilton) (advocating for a “ General Power of
T axation”).
3 See ARTICLES OF CONFEDERATION OF 1777, arts. II, VIII; Ackerman, supra note 2 at 6 (“T he Articles of Confederation
stated that the ‘common treasury . . . shall be supplied by the several States, in proportion to the value of all land within
each State,’ Articles of Confederation art. VIII (1781), but did not explicitly autho rize the Continental Congress to
impose any sanctions when a state failed to comply. T his silence was especially eloquent in light of the second
Article’s pronouncement: ‘Each State retains its sovereignty, freedom and independence, and every power, jurisdiction
and right, which is not by the confederation expressly delegated to the United States, in Congress assembled.’”).
4 CALVIN H. JOHNSON, RIGHTEOUS ANGER AT THE WICKED STATES: THE MEANING OF THE FOUNDERS’ CONSTITUTION, 15
(Cambridge University Press) (2005); see ARTICLES OF CONFEDERATION OF 1777, art. VIII.
5 Johnson, supra note 4, at 16 (“Some states simply ignored the requisitions. Some sent them back to Congress for
amendment, more to the states’ liking. New Jersey said it had paid enough tax by paying the tariffs or ‘imposts’ on
goods imported through New York or Philadelphia and it repudiated the requisition in full.”).
6 Robert D. Cooter & Neil S. Siegel, Not the Power to Destroy: An Effects Theory of the Tax Power, 98 VA. L. REV.
1195, 1202 (2012); see, e.g., Johnson, supra note 4, at 15 (“ In the requisition of 1786—the last before the
Constitution—Congress mandated that states pay $3,800,000, but it collected only $663.”); see Metzger, supra note 2,
at 89 (“Under the Articles of Confederation, states had failed to meet congressional requisitions on a massive scale and
Congress was bankrupt.”).
7 Johnson, supra note 4, at 16–17 (“Congress’s Board of T reasury had concluded in June 1786 that there was ‘no
reasonable hope’ that the requisitions would yield enough to allow Congress to make payments on the foreign debts,
even assuming that nothing would be paid on the domestic war debt. . . . Almost all of the money called for by the 1786
requisition would have gone to payments on the Revolutionary War debt. French and Dutch creditors were due
payments of $1.7 million, including interest and some payment on the principal. Domestic creditors were due to be paid
$1.6 million for interest only. Express advocacy of repudiation of the federal debt was rare, but with the failure of
requisitions, payment was not possible. . . . Beyond the repayment of war debts, the federal goals were quite modest.
T he operating budget was only about $450,000 . . . . Without money, however, the handful of troops on the frontier
would have to be disbanded and the Congress’ offices shut.”); see Cooter & Siegel, supra note 6 at 1204.
8 See, e.g., United States v. Richardson, 418 U.S. 166, 169–70 (1974).
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Duties, Imposts and Excises shal be uniform throughout the United States.”9 The U.S. Supreme
Court has described Congress’s power to tax as “very extensive.” 10
Supreme Court Chief Justice Salmon P. Chase famously described the taxing power in the
License Tax Cases:
It is given in the Constitution, with only one exception and only two qualifications.
Congress cannot tax exports, and it must impose direct taxes by the rule of apport ionment,
and indirect taxes by the rule of uniformity. Thus limited, and thus only, it reaches every
subject, and may be exercised at discretion.11
The Constitution provides several express limits on the manner in which taxes may be imposed.
First, legislation imposing taxes must originate in the House of Representatives.12 Second, the
Constitution precludes Congress from taxing articles exported from any state.13 Third, while
Congress may impose “[c]apitation, or other direct[] Tax[es],”14 the Constitution requires such
taxes to be “apportioned among the several States . . . according to their respective” populations.15
Fourth, Congress may impose other “Taxes, Duties, Imposts and Excises,” collectively referred to
as indirect taxes, but they must “be uniform throughout the United States.” 16 Fifth, the
Constitution authorizes taxes for debts, defense and the general welfare.17
The Supreme Court has also examined the scope of Congress’s taxing power in the context of
cases chal enging Congress’s ability to regulate private conduct.18 The Court has held that taxes
that are functional y regulatory penalties exceed the scope of Congress’s taxing power.19 In
determining whether a tax is the functional equivalent of a regulatory penalty, the Court has

9 U.S. CONST. art. I, § 8, cl. 1; see also id. art. I, § 8, cl. 18 (“T o make all Laws which shall be necessary and proper for
carrying into Execution the foregoing Powers, and all other Powers vested by this Constitution in the Government of
the United States, or in any Department or Officer thereof.”).
10 License T ax Cases, 72 U.S. 462, 471 (1866); see also United States v. Kahriger, 345 U.S. 22, 28 (1953) (“It is
axiomatic that the power of Congress to tax is extensive and sometimes falls with crushing effect . . . . As is well
known, the constitutional restraints on taxing are few.”); Brushaber v. Union Pac. R. Co., 240 U.S. 1, 12 (1916) (“ T hat
the authority conferred upon Congress by § 8 of article 1 ‘to lay and collect taxes, duties, imposts and excises’ is
exhaustive and embraces every conceivable power of taxation has never been questioned, or, if it ha s, has been so often
authoritatively declared as to render it necessary only to state the doctrine. ”); Austin v. Aldermen, 74 U.S. (7 Wall.)
694, 699 (1869) (“The right of taxation, where it exists, is necessarily unlimited in its nature. It carries with it
inherently the power to embarrass and destroy.”); see generally Veazie Bank v. Fenno, 75 U.S. 533, 540 (1869)
(explaining “ [N]othing is clearer, from the discussions in the [Constitutional] Convention and the discussions which
preceded final ratification [of the Constitution] by the necessary number of States, than the purpose to give this power
to Congress, as to the taxation of everything except exports, in its fullest extent.”).
11 License Tax Cases, 72 U.S. at 471.
12 U.S. CONST. art. I, § 7, cl. 1 (“All Bills for raising Revenue shall originate in the House of Representatives; but the
Senate may propose or concur with Amendments as on other Bills.”).
13 Id. art. I, § 9, cl. 5 (“No T ax or Duty shall be laid on Articles exported from any State.”).
14 Id. art. I, § 9, cl. 4 (“No Capitation, or other direct, T ax shall be laid, unless in Proportion to the Census or
enumeration herein before directed to be taken.”).
15 Id. art. I, § 2, cl. 3 (“Representatives and direct T axes shall be apportioned among the sever al States which may be
included within this Union, according to their respective Numbers . . . .”).
16 Id. art. I, § 8, cl. 1; see also Flint v. Stone T racy Co., 220 U.S. 107, 151 (1911) (“[T]he terms duties, imposts and
excises are generally treated as embracing the indirect forms of taxation contemplated by the Constitution.”).
17 Id. art. I, § 8, cl. 1.
18 See, e.g., Nat’l Fed’n of Indep. Bus. v. Sebelius, 567 U.S. 519, 563–74 (2012) [hereinafter NFIB].
19 See, e.g., Bailey v. Drexel Furniture Co., 259 U.S. 20, 37 (1922).
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The Federal Taxing Power: A Primer

looked to whether the “tax” has characteristics similar to traditional taxes and whether the “tax,”
like a regulatory penalty, inflicts punishment for an unlawful act or omission.20
This report summarizes express constitutional limits on Congress’s taxing power and discusses
the scope of Congress’s taxing power in the context of cases chal enging regulatory taxes.
The Origination Clause
Article I, Section 7, clause 1 of the U.S. Constitution provides, “Al Bil s for raising Revenue
shal originate in the House of Representatives; but the Senate may propose or concur with
Amendments as on other Bil s.” 21 This clause is known as the Origination Clause.22 It requires
revenue measures to originate in the U.S. House of Representatives, not the U.S. Senate. 23
Federal courts’ Origination Clause jurisprudence is based on two principal interpretations. First,
the phrase “Al Bil s for raising Revenue” refers to al legislation with the primary purpose of
raising revenue to support the government general y—“meeting the expenses or obligations of the
Government”24—rather than legislation for the specific purpose of creating and funding a discrete
government program.25 Second, when referring to tax legislation, the phrase “raising Revenue”
encompasses al tax legislation regardless of whether the estimated net revenue effect of the
legislation is an increase or decrease in revenue.26

20 NFIB, 567 U.S. at 563–68.
21 U.S. CONST. art. I, § 7, cl. 1; see, e.g., Flint v. Stone T racy Co., 220 U.S. 107, 143 (1911) (holding the Senate’s
substitution of an inheritance tax for a corporate income tax did not violate the Originatio n Clause because the Senate’s
amendment to the House of Representative’s bill for raising revenue was germane to the subject matter).
22 See, e.g., United States v. Munoz-Flores, 495 U.S. 385, 387 (1990).
23 See, e.g., Hubbard v. Lowe, 226 F. 135, 141 (S.D.N.Y. 1915) (holding the Cotton Futures Act was unconstitutional
because the act did not originate in the House of Representatives) , appeal dismissed, 242 U.S. 654 (1917). T he U.S.
Supreme Court dismissed the government’s appeal after “Congress mooted the issue by simply passing the same tax
bill again in proper order.” United States v. Madison, 712 F. Supp. 1379, 1380 (W.D. Wis. 1989); see Lowe v.
Hubbard, 242 U.S. 654 (1917).
24 T win City Nat. Bank of New Brighton v. Nebeker, 167 U.S. 196, 203 (1897).
25 Munoz-Flores, 495 U.S. at 398–401; see e.g. Millard v. Roberts, 202 U.S. 429, 436–37 (1906) (holding legislation
levying property taxes in the District of Columbia for the express purpose of financing railroad projects was not a
“Bill[] for raising Revenue” within the meaning of the origination clause because the legislation raised revenue for a
specific purpose, railroad projects.); Twin City Nat. Bank of New Brighton, 167 U.S. at 202 (holding “ a national
currency secured by a pledge of bonds of the United States, and which, in the furtherance of that object, and also to
meet the expenses attending the execution of the act, imposed a tax on the notes in circulation of the banking
associations organized under the statute, is clearly not a revenue bill which the Constitution declares must originate in
the House of Representatives.”); see also id. at 202–03 (“ Mr. Justice Story has well said that the practical construction
of the Constitution and the history of the origin of the constitutional provision in question proves that revenue bills are
those that levy taxes in the strict sense of the word, and are not bills for other purposes which may incidenta lly create
revenue.” (citing 1 J. STORY, COMMENTARIES ON THE CONSTITUTION § 880)). T he House’s primary method of enforcing
the Origination Clause is called “blue-slipping,” the act of the House returning a measure to the Senate that the House
has determined violates the Origination Clause. See CRS Report RS21236, Blue-Slipping: Enforcing the Origination
Clause in the House of Representatives
, by James V. Saturno.
26 See, e.g., Armstrong v. United States, 759 F.2d 1378, 1381 (9th Cir. 1985) (“The term ‘Bills for raising Revenue’
does not refer only to laws increasing taxes, but instead refers in general to all laws relating to taxes. ”); Wardell v.
United States, 757 F.2d 203, 205 (8th Cir. 1985) (per curiam) (“ We cannot agree that ‘revenue -raising’ means only
bills that increase taxes.”); but c.f. Bertelsen v. White, 65 F.2d 719, 722 (1st Cir. 1933) (holding a provision did not fall
within the meaning of the phrase “Bill[] for raising Revenue” as the provision’s “primary object [was] ‘to establish the
American merchant marine upon a sound and permanent basis,’” but also noting, “ It is not a bill to raise revenue. On
the contrary, it diminishes the revenue of the government”).
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In United States v. Munoz-Flores, the Supreme Court held a monetary special assessment in the
Victims of Crime Act of 198427 did not violate the Origination Clause, even though the Act
originated in the Senate and created revenue for the U.S. Treasury’s general fund incidental to its
primary purpose, because it was not a “Bil [] for raising Revenue.”28 The act contained several
measures to provide income to the Crime Victims Fund, including the monetary special
assessment.29 The act specified that once the total income of the fund exceeded $100 mil ion, the
excess would be placed in Treasury’s general fund.30
In reaching its decision, the Supreme Court restated the rule for determining when a bil
constitutes a “Bill[] for raising Revenue.”31 Specifical y, “a statute that creates a particular
governmental program and that raises revenue to support that program, as opposed to a statute
that raises revenue to support Government general y, is not a ‘Bil[l] for raising Revenue’ within
the meaning of the Origination Clause.”32 Applying this rule, the Court determined that the
monetary special assessment provision was not a “Bil [] for raising Revenue.”33 The fact that
funds in excess of $100 mil ion would, under the statute, be deposited in the Treasury’s general
fund did not alter the Court’s conclusion.34 Only a smal percentage of that excess would be
attributable to the special assessment.35 Moreover, the act’s legislative history showed that
Congress did not expect that the Treasury’s general fund would receive a substantial amount of
revenue from Crime Victim Fund’s surpluses.36 The Court found that “[a]ny revenue for the
general Treasury that [the monetary special assessment] creates is thus ‘incidenta[l]’ to that
provision’s primary purpose.”37
Several lower courts in the 1980s heard cases in which taxpayers chal enged the constitutionality
of the Tax Equity and Fiscal Responsibility Act of 1982 (TEFRA) on the ground that TEFRA’s
passage violated the Origination Clause.38 The tax bil introduced by the House of
Representatives would have yielded an estimated net loss of almost $1 bil ion over five years.39
Upon arrival in the Senate, the Senate struck out al of the provisions except for the enacting
clause and added provisions estimated to provide a net revenue increase of about $100 bil ion
over three years.40 Because only the Senate version of TEFRA would have yielded a net revenue

27 42 U.S.C. §§ 10601–04 (1984).
28 Munoz-Flores, 495 U.S. at 398–401; see generally U.S. GOV’T ACCOUNTABILITY OFF., GAO-05-734SP, A GLOSSARY
OF T ERMS USED IN THE FEDERAL BUDGET P ROCESS 3 (2005) (defining “ General Fund Account s” as “ Account s in t he
U.S. T reasury holding all federal money not allocated by law to any other fund account. ”).
29 Munoz-Flores, 495 U.S. at 398.
30 Id.
31 Id.
32 Id. (alteration in original).
33 Id. at 401.
34 Id. at 398–400.
35 Id. at 399.
36 Id.
37 Id. (third alteration in original).
38 See, e.g., T ex. Ass’n. of Concerned T axpayers, Inc. v. United States, 772 F.2d 163, 165 (5th Cir. 1985), cert denied,
106 S. Ct. 2265 (1986); Armstrong v. United States, 759 F.2d 1378, 1380 –81 (9th Cir. 1985); Wardell v. United States,
757 F.2d 203, 205 (8th Cir. 1985) (per curiam); Heitman v. United States, 753 F.2d 33, 35 (6th Cir. 1984) (per curiam);
Rowe v. United States, 583 F. Supp. 1516, 1519 (D. Del. 1984), aff’d without opinion, 749 F.2d 27 (3d Cir. 1984).
39 H.R. REP. No. 97-404, at 38 (1981).
40 S. REP. NO. 97-494, pt. 2, at 79 (1982); Tex. Ass’n. of Concerned Taxpayers, 772 F.2d at 164; Armstrong, 759 F.2d at
1381; see also U.S. CONST. art. I, § 7, cl. 1 (“ All Bills for raising Revenue shall originate in the House of
Representatives; but the Senate m ay propose or concur with Am endm ents as on other Bills.” (emphasis added)); Flint v.
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increase, the taxpayers chal enging the statute argued that TEFRA originated in the Senate as a
bil to raise revenue, in violation of the Origination Clause.41 The courts hearing these chal enges
to TEFRA embraced an expansive interpretation of the phrase “raising Revenue,” concluding that
al legislation relating to taxes was legislation that “rais[ed] revenue” within the meaning of the
Origination Clause and upheld TEFRA as constitutional.42
The Export Clause
Article 1, Section 9, clause 5 of the U.S. Constitution prohibits Congress from laying taxes and
duties on articles exported from any state.43 This clause is known as the Export Clause.44 The
Export Clause applies to taxes and duties, not user fees.45 The U.S. Supreme Court has interpreted
the Export Clause to address shipments only to foreign countries, not shipments to unincorporated
territories, such as Puerto Rico and the Commonwealth of the Northern Mariana Islands.46 The

Stone T racy Co., 220 U.S. 107, 143 (1911) (“In the Senate the proposed [inheritance] tax was removed from the
[House] bill, and the corporation tax, in a measure, substituted therefor. T he bill having properly originated in the
House, we perceive no reason in the constitutional provision relied upon why it may not be amended in the Senate in
the manner which it was in this case. T he amendment was germane to the subject -matter of the bill and not beyond the
power of the Senate to propose.”).
41 Tex. Ass’n. of Concerned Taxpayers, 772 F.2d at 165, Armstrong, 759 F.2d at 1381; Wardell, 757 F.2d at 205.
42 See, e.g., Armstrong, 759 F.2d at 1380; Wardell, 757 F.2d at 205; see also Tex. Ass’n. of Concerned Taxpayers, 772
F.2d at 166 (recognizing “ all contemporary courts have adopted the construction apparently given it by Congress, i.e.
‘relating to revenue’” as opposed to increasing revenue, but ruling that the challenge raised a “nonjusticiable political
question.”); Heitman, 753 F.2d at 35 (“ T he Senate may amend bills originating in the House as long as the bill remains
germane to the subject matter of the bill. Flint v. Stone T racy Co., 220 U.S. 107 [] (1911). T EFRA was not passed in
violation of this principle as it remained a revenue bill after the Senate amended the Act. ”); Rowe, 583 F. Supp. at 1519
(“Once a bill has passed the House, the Court perceives no constitutional reason why the Senate may not make
amendments germane to the subject matter of the legislation.”).
43 U.S. CONST. art. I, § 8, cl. 1; see, e.g., United States v. U.S. Shoe Corp., 523 U.S. 360 (1998) (holding an ad
valoreum tax directly imposed on the value of cargo loaded at U.S. ports for export violated the Export Clause); see
Carnival Cruise Lines, Inc. v. United States, 200 F.3d 1361, 1364 (Fed. Cir. 2000) (holding the Export Clause did not
preclude a tax on passengers because they were not “articles” for the purposes of the Export Clause), cert denied, 530
U.S. 1274 (2000).
44 See, e.g., U.S. Shoe, 523 U.S. at 362.
45 Id. at 363 (“ T he [Export] Clause, however, does not rule out a ‘user fee,’ provided that the fee lacks the attributes of
a generally applicable tax or duty and is, instead, a charge designed as compensation for government -supplied services,
facilities, or benefits.” (citing Pace v. Burgess, 92 U.S. 372 (1876))). In general, a user fee is a charge imposed on the
user of a government service with the primary purpose of offsetting the costs of that government service. See, e.g.,
Pace, 92 U.S. 375–76 (“ The stamp [tax] was intended for no other purpose than to separate and identify the tobacco
which the manufacturer desired to export, and thereby, instead of taxing it, to relieve it from the taxation to which other
tobacco was subjected. It was a means devised to prevent fraud, and secure the faithful carrying out of the declared
intent with regard to the tobacco so marked. T he payment of twenty -five cents or of ten cents for the stamp used was no
more a tax on the export than was the fee for clearing the vessel in which it wa s transported, or for making out and
certifying the manifest of the cargo. It bore no proportion whatever to the quantity or value of the package on which it
was affixed. T hese were unlimited, except by the discretion of the exporter or the convenience of handling. . . . We
know how next to impossible it is to prevent fraudulent practices wherever th e internal revenue is concerned . . . . T he
proper fees accruing in the due administration of the laws and regulations necessary to be observed to protect the
government from imposition and fraud likely to be committed under pretence of exportation are in no sense a duty on
exportation. T hey are simply the compensation given for services properly rendered. . . . [W]e cannot say that the
charge imposed is excessive, or that it amounts to an infringement of the [Export Clause]. We cannot say that it is a tax
or duty instead of what it purports to be, a fee or charge, for the employment of that instrumentality which the
circumstances of the case render necessary for the protection of the government.”).
46 Dooley v. United States, 183 U.S. 151, 153–54 (1901); see also Swan & Finch Co. v. United States, 190 U.S. 143,
144–45 (1903) (explaining “ ‘export’ as used in the Constitution and laws of the United States, generally means the
transportation of goods from this to a foreign country.”); see generally Christina Duffy Burnett, United States:
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Court has also construed the Export Clause as requiring “not simply an omission of a tax upon the
articles exported, but also a freedom from any tax which directly burdens” the process of
exporting.47
For example, in United States v. IBM, the Supreme Court held that an excise tax48 on insurance
premiums paid to foreign insurers for policies insuring exported goods was unconstitutional under
the Export Clause.49 In IBM, the parties agreed that the facts and issue before the Court were
largely indistinguishable from an earlier case, Thames & Mersey Marine Insurance Co. v United
States
,50 in which the Court held that a tax on insuring exports was “functional y the same” as a
tax on exports.51 Applying stare decisis principles, the Court declined to overrule Thames &
Mersey Marine Insurance
absent additional briefing from the parties on whether the insurance
policies subject to the excise tax were “so closely connected to the goods that the tax is, in
essence, a tax on exports.”52
The Supreme Court has ruled that the Export Clause’s restriction on the taxing power does not
extend to several taxes, such as a tax on al property alike, including property intended for export
but not in the “course of exportation”53; a nondiscriminatory tax on an exporter’s income;54 and a
stamp tax to identify goods intended for export.55

Am erican Expansion and Territorial Deannexation, 72 U. CHI. L. REV. 797, 800 (2005) (explaining the U.S. Supreme
Court’s doctrine of territorial incorporation “divided domestic territory . . . into two categories: those places
‘incorporated’ into the United States and forming an integral part thereof (including the states, the District of Columbia,
and the ‘incorporated territories’); and those places not incorporated into the United States, but merely ‘belonging’ to it
(which came to be known as the ‘unincorporated territories’)”).
47 Fairbank v. United States, 181 U.S. 283, 293 (1901); see William E. Peck & Co. v. Lowe, 247 U.S. 165, 173 (1918)
(“And the court has indicated that where the tax is not laid on the articles themselves while in course of exportation the
true test of its validity is whether it ‘so directly and closely’ bears on the ‘process of expo rting’ as to be in substance a
tax on the exportation.” (quoting T hames & Mersey Marine Ins. Co. v. United States, 237 U.S. 19, 25 (1915)).
48 Fernandez v. Wiener, 326 U.S. 340, 352 (1945) (an excise tax is a tax laid “upon particular use or enjoyment of
property or the shifting from one to another of any power or privilege incidental to the ownership or enjoyment of
property.”).
49 United States v. IBM, 517 U.S. 843, 854–56 (1996).
50 237 U.S. at 27 (holding “ proper insurance during the voyage is one of the necessities of exportation” and that “the
taxation of policies insuring cargoes during their transit to foreign ports is as much a burden on exporting as if it were
laid on the charter parties, the bills of lading, or the goods themselves.”).
51 IBM, 517 U.S. at 850, 854.
52Id. at 855–56; see id. at 855 (“[T ]he marine insurance policies in T hames & Mersey arguably ‘had a value apart from
the value of the goods.’ Nevertheless, the Government apparently has chosen not to challenge that aspect of T hames &
Mersey in this case. When questioned on that implicit concession at oral argument, the Government admitted that it
‘chose not to’ argue that [the excise tax] does not impose a tax on the goods themselves.”) (citations omitted).
53 T urpin v. Burgess, 117 U.S. 504, 507 (1886) (“ But a general tax, laid on all property alike, and not levied on goods
in course of exportation, nor because of their intended exportation, is not within the constitutional prohibition. . . . In
the present case, the tax (if it was a tax) was laid upon the goods before they had left the factory. T hey were not in
course of exportation; they might never be exported; whether they would be or not would depend altogether on the will
of the manufacturer.”).
54 William E. Peck & Co. v. Lowe, 247 U.S. 165, 174 –75 (1918) (holding the Export Clause did not shield an exporter
from an income tax laid generally on net incomes because the tax was laid on the exporter’s income from exportation).
55 Pace v. Burgess, 92 U.S. 372, 376 (1876) (finding the stamp tax imposed was not a tax or duty, but a fee).
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Direct Taxes and the Rule of Apportionment
The U.S. Constitution subjects direct taxes to the rule of apportionment.56 Though the U.S.
Supreme Court has not clearly distinguished direct taxes from indirect taxes, the Court has
identified capitation taxes—a tax “paid by every person, ‘without regard to property, profession,
or any other circumstance’” 57—and taxes on real and personal property as direct taxes.58 Under
the rule of apportionment, Congress sets the total amount to be raised by a direct tax, then divides
that amount among the states according to each state’s population.59 Thus, a state with one-
twentieth of the Nation’s population would be responsible for one-twentieth of the total amount
of direct tax without regard to that state’s income or wealth levels.60
The Supreme Court first interpreted the Constitution’s “direct tax” language shortly after the
Nation’s founding, in Hylton v. United States.61 Hylton presented the question of whether an
unapportioned tax on carriages was a “direct tax,” and therefore unconstitutional.62 In three
separate opinions, the deciding justices63 each held that the tax was not “direct” within the
meaning of the Constitution and suggested that the term “direct taxes” applied only to a narrow
class of taxes that includes (1) capitation taxes64 and (2) taxes on “land.”65
In Hylton, the Supreme Court adopted a functional approach to determine whether a tax is direct,
focusing on whether the tax at issue can be apportioned and, if so, whether apportionment would
produce significant inequities among taxpayers.66 As Justice Samuel Chase stated in his opinion,
“If [a tax] is proposed to tax any specific article by the rule of apportionment, and it would

56 U.S. CONST. art. I, § 9, cl. 4 (“No Capitation, or other direct, T ax shall be laid, unless in Proportion to the Census or
enumeration herein before directed to be taken .”); id. art. I, § 2, cl. 3 (“ Representatives and direct T axes shall be
apportioned among the several States which may be included within this Union, according to their respective Numbers
. . . .”).
57 NFIB, 567 U.S. at 571 (emphasis omitted) (citing Hylton v. United States, 3 U.S. 171, 175 (1796) (opinion of Chase,
J.)).
58 Pollock v. Farmers’ Loan & T rust Co., 157 U.S. 429 (1895); Hylton v. United States, 3 U.S. 171 (1796); see also
NFIB, 567 U.S. 519, 571 (2012) (holding that the individual mandate provision in the Patient Protection and
Affordable Care Act was not a direct tax because it did “ not fall within” any of the “ recognized categor[ies]” of direct
taxes, capitation taxes and taxes on real or personal property).
59 See, e.g., Act of Aug. 5, 1861, ch. 45, 12 Stat. 292; Act of Jan. 9, 1815, ch. 21, 3 Stat. 164.
60 Erik M. Jensen, The Taxing Power, the Sixteenth Amendment, and the Meaning of “Incomes”, 33 ARIZ. ST. L.J.
1057, 1067 (2001).
61 Hylton, 3 U.S. 171.
62 3 U.S. at 172. T he tax at issue in Hylton imposed a specific yearly sum on carriages. Act of June 5, 1794, ch. 45, 1
Stat. 373, 374 (1794). T he amount varied between one and ten dollars, depending on the type of carriage. Id. T he tax
exempted carriages used in husbandry or for the transportation of goods, wares, merchandise, produce, or commodities.
Id.
63 Only four of the six Justices who comprised the Supreme Court at the time participated in the Hylton argument—
Associate Justices Chase, Paterson, Iredell, and Wilson. Consistent with the Court’s practice during that period, Justices
Chase, Paterson, and Iredell each wrote a separate, or “seriatim,” opinion holding the tax to be constitutional. See
Hylton
, 3 U.S. at 172–83; M. T odd Henderson, From Seriatim to Consensus and Back Again: A Theo ry of Dissent,
2007 SUP . CT. REV. 283, 303–11 (2007). Justice Wilson abstained from voting on the case because he had previously
expressed an opinion on the issue while serving as a circuit court judge and because the unanimity of the remaining
three participating Justices made his opinion unnecessary. See Hylton, 3 U.S. at 183–84.
64 See NFIB, 567 U.S. at 571 (citing Hylton, 3 U.S. at 175 (opinion of Chase, J.)).
65 Hylton, 3 U.S. at 174–75 (opinion of Chase, J.); id. at 176–77 (opinion of Paterson, J.); id. at 183 (opinion of Iredell,
J.).
66 3 U.S. at 174 (opinion of Chase, J.); id. at 179–80 (opinion of Paterson, J.); id. at 181–83 (opinion of Iredell, J.).
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evidently create great inequality and injustice, it is unreasonable to say, that the Constitution
intended such tax should be laid by that rule.”67 As the Court recently explained its holding in
Hylton, the “Court upheld the tax, in part reasoning that apportioning such a tax would make little
sense, because it would have required taxing carriage owners at dramatical y different rates
depending on how many carriages were in their home State.”68 The Court in Hylton did not,
however, offer a comprehensive definition of the types of taxes that are “direct.”69
The Supreme Court expanded on its interpretation of direct taxes in its two decisions in Pollock v.
Farmers’ Loan & Trust Co.
,70 holding that taxes on real and personal property, and income
derived from them, were direct taxes.71 These decisions significantly altered the Court’s direct tax
jurisprudence. In Pollock, the Court considered whether provisions in an 1894 act that imposed
unapportioned taxes on income derived from both real and personal property were direct taxes. 72
The Court adopted two primary holdings regarding the scope of the Constitution’s “direct tax”
clause. First, the Court held that taxes on real estate and personal property are direct taxes.73
Second, the Court held that a tax on income derived from real or personal property—as opposed
to income derived from employment or some other source74—is, in effect, a tax imposed directly
on the property itself and is also a direct tax.75 Applying these holdings, the Court held that the
provisions before it were unconstitutional because they were unapportioned taxes on income
derived from real and personal property.76
The Pollock Court concluded that its holding did not conflict with the Court’s prior decisions
interpreting the direct tax language.77 The Court reasoned that each of those decisions had
sustained unapportioned taxes as either “excises” or “duties” imposed on a particular use of, or
privilege associated with, the property in question, not as a tax on the property itself.78 As to

67 Id. at 174.
68 NFIB, 567 U.S. at 570; see Hylton, 3 U.S. at 179 (opinion of Paterson, J.) (“A tax on carriages, if apportioned, would
be oppressive and pernicious. How would it work? In some states there are many carriages, and in others but few. Shall
the whole sum fall on one or two individuals in a state, who may happen to own and possess carriages? T he thing
would be absurd, and inequitable.”).
69 Contra Springer v. United States, 102 U.S. 586, 602 (1880) (“Our conclusions are, that direct taxes, within the
m eaning of the Constitution, are only
capitation taxes, as expressed in that instrument, and taxes on real estate.”
(emphasis added)); but see Pollock v. Farmers’ Loan & T rust Co., 157 U.S. 429 (1895) (holding taxes on personal
property are also direct taxes).
70 158 U.S. 601 (1895) [hereinafter Pollock II]; 157 U.S. 429 [hereinafter Pollock I]. Pollock came to the Court twice.
In Pollock I, the Court invalidated the tax at issue insofar as it was a tax upon income derived from real property, but
the Court was equally divided on whether income derived from personal property was a direct tax. 157 U. S. at 583,
586. In Pollock II, on petitions for rehearing, the Court held that a tax on income derived from personal property was
also a direct tax. 158 U.S. at 637. For simplicity, the main body of this report refers to the two decisions collectively as
the “ Pollock” decision.
71 Pollock II, 158 U.S. 601; Pollock I, 157 U.S. 429.
72 Pollock II, 158 U.S. at 618; Pollock I, 157 U.S. at 558; see Act of Aug. 27, 1894, ch. 349, 28 Stat. 509.
73 Pollock II, 158 U.S. at 628; Pollock I, 157 U.S. at 580–81.
74 T he Court stated that its holding did not extend to income or other gains derived from “business, privileges, or
employments.” Pollock II, 158 U.S. at 635.
75 Pollock I, 157 U.S. at 581 (“An annual tax upon the annual value or annual user of real estate appears to us the same
in substance as an annual tax on the real estate, which would be paid out of the rent or income.”); Pollock II, 158 U.S.
at 628 (applying “the same reasoning . . . to capital in personalty held for the purpose of income, or ordinarily yielding
income, and to the income therefrom”).
76 Pollock II, 158 U.S. at 637; Pollock I, 157 U.S. at 583.
77 Pollock II, 158 U.S. at 626–27; Pollock I, 157 U.S at 574–80.
78 Pollock II, 158 U.S. at 626–27; Pollock I, 157 U.S at 574–80.
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Hylton specifical y, the Court determined that it had upheld the unapportioned carriage tax as an
“excise” on the “expense” or “consumption” of carriages, rather than as a tax on carriage
ownership.79
Pollock’s holding and rationale were later limited in several respects.80 Most prominently,
Congress passed and the states ratified the Sixteenth Amendment in direct response to Pollock’s
prohibition on the unapportioned taxation of income derived from real or personal property.81 The
Sixteenth Amendment authorized Congress “to lay and collect taxes on incomes, from whatever
source derived
, without apportionment among the several states.”82 Further, while the Court in
Pollock held that a tax on income derived from property was indistinguishable from a tax on the
property itself, the Court later rejected that reasoning in Stanton v. Baltic Mining Company,
upholding an unapportioned tax on a mine’s income as being “not a tax upon property as
such . . . , but a true excise levied on the results of the business of carrying on mining
operations.”83 The Court opined:
[T]he Sixteenth Amendment conferred no new power of taxation but simply prohibited the
previous complete and plenary power of income taxation possessed by Congress from the
beginning from being taken out of the category of indirect taxation to which it inherently
belonged and being placed in the category of direct taxation subject to apportionment by a
consideration of the sources from which the income was deriv ed, that is by testing the tax
not by what it was —a tax on income, but by a mistaken theory deduced from the origin or
source of the income taxed.84
Despite these developments, it does not appear that the Supreme Court has overruled Pollock’s
central holding that a tax on real or personal property solely because of its ownership is a direct
tax.85 In 1920, the Court relied on Pollock in Eisner v. Macomber to hold unconstitutional an
unapportioned tax on shares issued as stock dividends.86 There, the Court addressed whether a
corporation’s issuance of additional shares to a stockholder as stock dividends was “income”
under the Sixteenth Amendment and, if not, whether a tax on those unrealized gains was a direct
tax.87 After concluding that the stock dividends were not “income,”88 the Court relied on Pollock
to conclude that the tax was a direct tax.89

79 Pollock II, 158 U.S. at 627 (“What was decided in the Hylton Case was, then, that a tax on carriages was an excise,
and therefore an indirect tax.”).
80 Jensen, supra note 60, at 1073.
81 Id.; Boris I. Bittker, Constitutional Limits on the Taxing Power of the Federal Government, 41 T AX LAW. 3 (1987).
82 U.S. CONST. amend. XVI (emphasis added).
83 240 U.S. 103, 112–14 (1916).
84 Id. at 112–13 (citing Brushaber v. Union Pac. R.R., 240 U.S. 1 (1916)).
85 See Union Elec. Co. v. United States, 363 F.3d 1292, 1299 (Fed. Cir. 2004) (“We agree that Pollock has never been
overruled, though its reasoning appears to have been discredited.”); see also NFIB, 567 U.S. 519, 571 (2012) (“In
1895, [in Pollock II,] we expanded our interpretation [of direct taxes] to include taxes on personal property and income
from personal property, in the course of striking down aspects of the federal income tax. T hat result was overturned by
the Sixteenth Amendment, although we continued to consider taxes on personal property to be direct taxes” (citations
omitted)).
86 Eisner v. Macomber, 252 U.S. 189, 219 (1920).
87 Id. at 201–19.
88 Id. at 201–17. Eisner defined “income” as “the gain derived from capital, labor, or from both combined” Id. at 207
(internal quotation marks omitted).
89 252 U.S. at 218–19.
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The Court determined that the limitation on Congress’s taxing power identified in Pollock “stil
has an appropriate and important function . . . not to be overridden by Congress or disregarded by
the courts.”90 The Court observed that the Sixteenth Amendment must be “construed in
connection with the taxing clauses of the original Constitution and the effect attributed to them,”
including Pollock’s holding that “taxes upon property, real and personal,” are direct taxes.91
Applying that limitation, the Court held that the tax before it was unconstitutional because it was
an unapportioned tax on personal property.92
In practical terms, the rule of apportionment for direct taxes means that Congress sets the amount
to be raised by the direct tax, then divides that amount among the states by reference to each
state’s population.93 An 1861 federal tax on real property il ustrates the operation of the rule of
apportionment.94 Congress enacted a direct tax of twenty mil ion dollars.95 After apportioning the
direct tax among the states, territories, and the District of Columbia, the State of New York was
liable for the largest portion of the tax, $2,603,918.67,96 and the Territory of Dakota was liable for
the least, $3,241.33.97 The act cal ed for the President to assign collection districts to states,
territories, and the District of Columbia to apportion “to each county and State district its proper
quota of direct tax”98 and determine the amounts taxpayers in each collection district would be
required to pay.99
Indirect Taxes and the Rule of Uniformity
The U.S. Constitution requires that duties, imposts, or excise taxes—collectively referred to as
indirect taxes—be “uniform throughout the United States.”100 An indirect tax satisfies the
Uniformity Clause “only when the tax ‘operates with the same force and effect in every place
where the subject of it is found.”101 In general, an indirect tax does not violate the Uniformity
Clause where the subject of the indirect tax is described in non-geographical terms.102 If Congress

90 Id. at 206.
91 Id. at 205–06; id. at 218–19.
92 Id. at 219.
93 See Hylton v. United States, 3 U.S. 171, 174 (1796).
94 Act of Aug. 5, 1861, ch. 45, 12 Stat. 292, 294; see also Act of Jan. 9, 1815, ch. 21, 3 Stat. 164.
95 Act of Aug. 5, 1861, ch. 45, 12 Stat. 292, 294.
96 Id. at 295 (“T o the State of New York, two million six hundred and three thousand nine hundred and eighteen and
two-third dollars.”).
97 Id. at 296 (“T o the T erritory of Dakota, three thousand two hundred and forty-one and one-third dollars.”).
98 Id. at 301.
99 Id. at 296 (“T hat, for the purpose of assessing the above tax and collecting the same, the President of the United
States be, and he is hereby authorized, to divide, respectively, the States and T erritories of the United States and the
District of Columbia into convenient collection districts, and to nominate and, by and with the advice of the Senate, to
appoint an assessor and a collector for each such district, who shall be freeholders and resident within the same.”); id.
at 302 (“[T ]he said assessors, respectively, shall make out lists containing the sums payable according to the provisions
of this act upon every object of taxation in and for each collection district ; which lists shall contain the name of each
person residing within the said district, owning or having the care or superintendence of property lying within the said
district which is liable to the said tax.”).
100 U.S. CONST. art. I, § 8, cl. 1; see Flint v. Stone T racy Co., 220 U.S. 107, 151 (1911) (“[T]he terms duties, imposts
and excises are generally treated as embracing the indirect forms of taxation contemplated by the Constitution.”).
101 United States v. Ptasynski, 462 U.S. 74, 82 (1983) (quoting Edye v. Robertson, 112 U.S. 580, 594 (1884)).
102 Ptasynski, 462 U.S. at 84; see, e.g., Knowlton v. Moore, 178 U.S. 41, 106 (1900).
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uses geographical terms to describe the subject of the indirect tax, then the U.S. Supreme Court
“wil examine the classification closely to see if there is actual geographic discrimination.”103
In the Supreme Court’s first hearing of Pollock, the Court was divided on whether the statutes
enacting the federal income tax104 violated the Uniformity Clause.105 Among other things, the
complainant argued that the federal income tax violated the rule of uniformity by effectively
taxing certain corporations at a higher rate than individuals and partnerships on income “from
precisely similar property or business.”106 However, the issue became moot on rehearing after the
Court held that provisions in the act imposing the federal income tax were unapportioned direct
taxes.107
Five years later, in Knowlton v. Moore, the Supreme Court examined how the rule of uniformity
applied to indirect taxes.108 In Knowlton, the Court adopted a less restrictive reading of the
Uniformity Clause,109 holding that, in selecting the subject of an indirect tax, Congress could
define the class of objects subject to the tax and make distinctions between similar classes.110 The
Knowlton Court ruled that an inheritance tax that exempted legacies and distributive shares of
personal property under $10,000, imposed a primary tax rate that varied based on the
beneficiary’s degree of relationship to the decedent, and progressively raised tax rates on legacies
and distributive shares as they increased in size did not violate the Uniformity Clause.111 The
Court held that the Uniformity Clause merely requires “geographical uniformity,” meaning
indirect taxes must operate in the same manner throughout the United States.112

103 Ptasynski, 462 U.S. at 85.
104 Act of Aug. 27, 1894, ch. 349, 28 Stat. 509.
105 Pollock I, 157 U.S. 429, 586 (1895); compare Act of Aug. 27, 1894, ch. 349, 28 Stat. 509, 553 (“That from and after
the first day of January, eighteen hundred and ninety -five, and until the first day of January, nineteen hundred, there
shall be assessed, levied, collected, and paid annually upon the gains, profits, and income received in the preceding
calendar year by every citizen of the United States, whether residing at home or abroad, and every person residing
therein, whether said gains, profits, or income be derived from any kind of property, r ents, interest, dividends, or
salaries, or from any profession, trade, employment, or vocation carried on in the United States or elsewhere, or from
any other source whatever, a tax of two per centum on the am ount so derived over and above four thousand do llars,
and a like tax shall be levied, collected, and paid annually upon the gains, profits, and income from all property owned
and of every business, trade, or profession carried.
” (emphasis added)), with id. at 556 (“ T hat there shall be assessed,
levied, and collected, except as herein otherwise provided, a tax of two per centum annually on the net profits or
incom e
above actual operating and business expenses, including expenses for materials purchased for manufacture or
bought for resale, losses, and interest on bonded and other indebtedness of all banks, banking institutions, trust
companies, saving institutions, fire, marine, life, and other insurance companies, railroad, canal, turnpike, canal
navigation, slack water, telephone, telegraph, express, electric light, gas, water, street railway companies, and all other
corporations, companies, or associations doing business for profit in the United States, no matter how created and
organized, but not including partnerships.” (emphasis added)).
106 Pollock I, 157 U.S. at 555.
107 See Pollock II, 158 U.S. 601, 637 (1895).
108 178 U.S. 41 (1900).
109 Id. at 84–106; see id. at 96 (“T he proceedings of the Continental Congress also make it clear that the words ‘uniform
throughout the United States,’ which were afterwards inserted in the Constitution of the United States, had, prior to its
adoption, been frequently used, and always with reference purely to a geographical uniformity and as synonymous with
the expression, ‘to operate generally throughout the United States.’ T he foregoing situation so thoroughly permeated all
the proceedings of the Continental Congress that we might well rest content with their mere statement. . . . T he view
that intrinsic uniformity was not then conceived is well shown.”).
110 Id. at 83–110; see also United States v. Ptasynski, 462 U.S. 74, 82 (1983).
111 Knowlton, 178 U.S. at 110; see id. at 83–84.
112 Id. at 84 (explaining geographical uniformity “requires that whatever plan or method Congress adopts for laying the
tax in question, the same plan and the same method must be made operative throughout the United States”).
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The Supreme Court further clarified the meaning of the Uniformity Clause in United States v.
Ptasynski
.113 In Ptasynski, the Court ruled that the Crude Oil Windfal Profit Tax Act of 1980,114
which made the windfal profit tax inapplicable to “exempt Alaskan oil,”115 did not violate the
Uniformity Clause despite the act’s inclusion of favorable treatment for a geographical y defined
classification.116 The Court explained, “Where Congress defines the subject of a tax in
nongeographic terms, the Uniformity Clause is satisfied. . . . But where Congress does choose to
frame a tax in geographic terms, we wil examine the classification closely to see if there is actual
geographic discrimination.”117 The Court held that the geographical y defined classification was
constitutional because Congress used “neutral factors” relating to the ecology, environment, and
the remoteness of the location to conclude the exempt Alaskan oil classification merited favorable
treatment.118 Moreover, in the Court’s view Congress did not intend to grant Alaska “an undue
preference at the expense of other oil producing states.”119
Taxes for Federal Debts, Defense, or the
General Welfare
The U.S. Constitution authorizes Congress to levy taxes “to pay the Debts and provide for the
common Defence and general Welfare of the United States.”120 The U.S. Supreme Court has
interpreted the term “debts” to include debts “of a strictly legal character” and “debts or claims
which rest upon a merely equitable or honorary obligation.”121 The Court has general y left it to
Congress to determine whether a tax advances the “general welfare.”122 However, the Supreme

113 Ptasynski, 462 U.S. 74.
114 Pub. L. No. 96-223, 94 Stat. 229 (1980).
115 Ptasynski, 462 U.S. at 77; see id. at 77–78 (“[Exempt Alaskan oil] is defined as: ‘any crude oil (other than
Sadlerochit oil) which is produced—(1) from a reservoir from which oil has been produced in commercial quantities
through a well located north of the Arctic Circle, or (2) from a well located on the northerly side of the divide of the
Alaska-Aleutian Range and at least 75 miles from the nearest point on the T rans-Alaska Pipeline System.’ § 4994(e).
Although the Act refers to this class of oil as ‘exempt Alaskan oil,’ the reference is no t entirely accurate. T he Act
exempts only certain oil produced in Alaska from the windfall profit tax. Indeed, less than 20% of current Alaskan
production is exempt. Nor is the exemption limited to the State of Alaska. Oil produced in certain offshore terr itorial
waters—beyond the limits of any State—is included within the exemption.”).
116 Id. at 85.
117 Id. at 84–85.
118 Id. at 85 (“ Congress clearly viewed ‘exempt Alaskan oil’ as a unique class of oil that, consistent with the scheme of
the Act, merited favorable treatment. It had before it ample evidence of the disproportionate costs and difficulties—the
fragile ecology, the harsh environment, and the remote location —associated with extracting oil from this region. We
cannot fault its determination, based on neutral factors, that this oil required separate treatment.”).
119 Id. at 85–86 (“ Nor is there any indication that Congress sought to benefit Alaska for reasons that would offend the
purpose of the [Uniformity] Clause. Nothing in the Act’s legislative history suggests that Congress intended to grant
Alaska an undue preference at the expense of other oil-producing States. T his is especially clear because the windfall
profit tax itself falls heavily on the State of Alaska. . . . Where, as here, Congress has exercised its considered judgment
with respect to an enormously complex problem, we are reluctant to disturb its determination .”).
120 U.S. CONST. art. I, § 8, cl. 1.
121 U.S. v. Realty Co., 163 U.S. 427, 440 (1896); see, e.g., Cincinnati Soap Co. v. United States, 301 U.S. 308, 315
(1937) (holding that an act of Congress that set apart revenue from a processing tax on coconut oil of Philippine
production for the use of the Philippine Islands fell within the meaning of “debt” for the purposes of Article I, Section
8, clause 1 of the U.S. Constitution).
122 Ruth Mason, Federalism and the Taxing Power, 99 CALIF. L. REV. 975, 997 (2011); see, e.g., Helvering v. Davis,
301 U.S. 619, 640–41 (1937) (“The line must still be drawn between one welfare and another, between particular and
general. Where this shall be placed cannot be known through a formula in advance of the event. T here is a middle
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Court has ruled that a tax wil not cease to be valid solely because the amount of revenue it raises
is negligible.123
Taxes to Regulate Conduct
Congress uses the taxing power for more than just raising revenue. Congress also uses the taxing
power to regulate conduct. Congress uses tax expenditures and tax penalties to accomplish its
policy goals and to influence private behavior.124 The U.S. Supreme Court has not invalidated a
tax with a clear regulatory effect solely because Congress was motivated by a regulatory
purpose.125 In National Federation of Independent Business v. Sebelius (NFIB), the Court
reaffirmed that it construes the U.S. Constitution to prohibit Congress from using the taxing
power to enact taxes that are functional y regulatory penalties as a means of regulating in areas
that Congress cannot regulate directly through its other enumerated powers.126 In a few cases
decided in the 1920s and 1930s, the Court invalidated federal taxes that were functional y
regulatory penalties on this basis.127
In Bailey v. Drexel Furniture Co. (commonly referred to as the Child Labor Tax Case), decided in
1922, the Supreme Court struck down a ten percent tax on the net profits of specified employers

ground or certainly a penumbra in which discretion is at large. The discretion, however, is not confided to the courts.
The discretion belongs to Congress
, unless the choice is clearly wrong, a display of arbitrary power, not an exercise of
judgment. T his is now familiar law. ‘When such a contention comes here we naturally require a showing that by no
reasonable possibility can the challenged legislation fall within the wide range of discretion permitted to the Congress. ’
. . . Nor is the concept of the general welfare static. Needs that were narrow or parochial a century ago may be
interwoven in our day with the well-being of the Nation. What is critical or urgent changes with the times.” (quoting
United States v. Butler, 297 U.S. 1, 67 (1936) (emphasis added) ( citations omitted)); see also NFIB, 567 U.S. 519, 674
(2012) (“Since [Helvering v. Davis], the Court has never held that a federal expenditure was not for ‘the general
welfare.’”); South Dakota v. Dole, 483 U.S. 203, 207 n.2 (1987) (reviewing Congress’s sp ending power) (“T he level of
deference to the congressional decision is such that the Court has more recently questioned whether ‘general welfare’ is
a judicially enforceable restriction at all.” (citing Buckley v. Valeo, 424 U.S. 1, 90–91 (1976) (per curiam))).
123 United States v. Sanchez, 340 U.S. 42, 44 (1950) (explaining a tax does not cease to be valid “ even though the
revenue obtained is obviously negligible, Sonzinsky v. United States, [300 U.S. 506 (1937)] or the revenue purpose of
the tax may be secondary, Hampt on & Co. v. United States, [] 276 U.S. 394 [(1928)].”); see also United States v.
Kahriger, 345 U.S. 22, 28 n.4 (1953) (“The figure of $ 4,371,869 [raised by the wagering tax], however, is relatively
large when it is compared with [other taxes declared valid including] the $ 3,501 collected under the tax on adulterated
and process [sic] or renovated butter and filled cheese, the $ 914,910 collected under the tax on narcotics, including
marihuana and special taxes, and the $ 28,911 collected under the tax on firearms, transfer and occupational taxes.”).
124 Mason, supra note 122, at 977–78 (“Congress uses two kinds of tax incentives to regulate private actors. T ax
subsidies or ‘tax expenditures’ are tax laws that offer special tax deductions, credits, and other tax benefits designed to
accomplish public policy goals. . . . T ax penalties are special tax code provisions that increase the normal tax burden.
Like tax expenditures, Congress designs tax penalties to influence taxpayer behavior.”); see NFIB, 567 U.S. at 544
(noting the difference between tax statutes describing exactions as penalties and penalties for constitutional purposes—
taxes that are functionally regulatory penalties that are impermissible when solely relying on Congress’s authority to
regulate under the taxing power).
125 See, e.g., United States v. Doremus, 249 U.S. 86, 93 (1919) (“ [F]rom an early day the court has held that the fact
that other motives may impel the exercise of federal taxing power does not authorize the courts to inquire into that
subject. If the legislation enacted has some reasonable relation t o the exercise of the taxing authority conferred by the
Constitution, it cannot be invalidated because of the supposed motives which induced it. ”); Flint v. Stone T racy Co.,
220 U.S. 107, 167 (1911) (“[T]he right to select the measure and objects of taxation devolves upon the Congress and
not upon the courts, and such selections are valid unless constitutional limitations are overstepped.”); McCray v. United
States, 195 U.S. 27, 59 (1904) (“[T]he motive or purpose of Congress in adopting acts in question ma y not be inquired
into.”); see Metzger, supra note 2, at 90.
126 567 U.S. at 572–73.
127 See, e.g., United States v. Butler, 297 U.S. 1 (1936); Bailey v. Drexel Furniture Co., 259 U.S. 20 (1922).
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who knowingly employed child labor.128 The Court invalidated the child labor tax as a penalty
exceeding the scope of Congress’s enumerated powers and aiming to achieve a regulatory
purpose “plainly within” the exclusive powers reserved to the states under the Tenth
Amendment.129 Four characteristics of the tax led the Court to conclude the tax was a penalty: (1)
the tax was conditioned on noncompliance with a specific and detailed course of conduct
regarding the use of child labor; (2) the tax was not commensurate with the degree of the
infraction—i.e., a smal departure from the prescribed course of conduct could feasibly lead to the
ten percent tax on net profits; (3) there was a scienter requirement—the tax was conditioned on an
employer knowing he employed an underage laborer; and (4) the Department of Labor, an agency
traditional y responsible for enforcing labor laws as opposed to tax laws, could enforce the course
of conduct prescribed by the tax. 130 The Court distinguished the child labor tax from acceptable
regulatory taxes by emphasizing that in those cases Congress had authority outside the taxing
power to regulate those activities.131
In 1935, in United States v. Constantine, a divided U.S. Supreme Court struck down a federal
excise tax on liquor dealers sel ing liquor in violation of state laws.132 The Court read the U.S.
Constitution to prohibit Congress from imposing an excise tax on liquor dealers when the purpose
of the tax was to punish rather than raise revenue, because Congress lacked authority to impose a
penalty on liquor dealers following the repeal of the Eighteenth Amendment.133 The Court

128 259 U.S. at 37; see also Hammer v. Dagenhart, 247 U.S. 251 (1918) (holding Congress lacked authority to regulate
child labor under the Commerce Clause).
129 Drexel Furniture, 259 U.S. at 39–43; see U.S. CONST. amend. X (“ T he powers not delegated to the United States by
the Constitution, nor prohibited by it to the States, are reserved to the States respectively, or to the people. ”); see also
Drexel Furniture
, 259 U.S. at 37–38 (“ Out of a proper respect for the acts of a coordinate branch of the Government,
this court has gone far to sustain taxing acts as such, even though there has been ground for suspecting from the weight
of the tax it was intended to destroy its subject. But, in the act before us, the presumption of validity cannot prevail,
because the proof of the contrary is found on the very face of its provisions. Grant the validity of this law, and all that
Congress would need to do, hereafter, in seeking to take over to its control and one of the great number of subjects of
public interest, jurisdiction of which the States have never parted with, and which are reserved to them by the T enth
Amendment, would be to enact a detailed measure of complete regulation of the subject and enforce it by a so -called
tax upon departures from it. T o give such magic to the word ‘tax’ would be to break down all constitutional limitation
of the powers of Congress and completely wipe out the sovereignty of the States.”).
130 Drexel Furniture, 259 U.S. at 36–37 (“[T]his act is more [than a tax]. It provides a heavy exaction for a departure
from a detailed and specified course of conduct in business. T hat course of business is that employers shall employ in
mines and quarries, children of an age greater than sixteen years; in mills and factories, children of an age greater than
fourteen years, and shall prevent children of less than sixteen years in mills and factories from working more than eight
hours a day or six days in the week. If an employer departs from this prescribed course of business, he is to pay to the
Government one-tenth of his entire net income in the business for a full year. T he amount is not to be proportioned in
any degree to the extent or frequency of the departures, but is to be paid by the employer in full measure whether he
employs five hundred children for a year, or employs o nly one for a day. Moreover, if he does not know the child is
within the named age limit, he is not to pay; that is to say, it is only where he knowingly departs from the prescribed
course that payment is to be exacted. Scienter is associated with penalties not with taxes. T he employer’s factory is to
be subject to inspection at any time not only by the taxing officers of the T reasury, the Department normally charged
with the collection of taxes, but also by the Secretary of Labor and his subordinates whose normal function is the
advancement and protection of the welfare of the workers. In the light of these features of the act, a court must be blind
not to see that the so-called tax is imposed to stop the employment of children within the age limits prescribed.”).
131 Id. at 40–44.
132 296 U.S. 287 (1935).
133 Id. at 293–94 (“The repeal of the Eighteenth Amendment renders it necessary to determine whether the exaction is
in fact a tax or a penalty. If it was laid to raise revenue its validity is beyond question, notwithstanding the fact that the
conduct of the business taxed was in violation of law. T he United States has the power to levy excises upon
occupations, and to classify them for this purpose . . . . T he question is whether the exaction of $1,000 in addit ion, by
reason solely of his violation of state law, is a tax or a penalty? If, as the court below thought, [the excise tax] was part
of the enforcing machinery under the Amendment, it automatically fell at the moment of repeal. But even though the
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emphasized the following features of the excise tax as evidence that its purpose was to impose a
penalty rather than raise revenue: (1) the $1,000 excise was “highly exorbitant” and “grossly
disproportionate” to the $25 normal tax on retail liquor dealers; and (2) the tax was conditioned
on the commission of a crime.134 The majority concluded that Congress exceeded its authority by
penalizing liquor dealers for violating state law, because such regulation was reserved, under the
Tenth Amendment, to the states.135 The majority expressed that al owing the federal government
to impose penalties for violating state law would “obliterate the distinction between the delegated
powers of the federal government and those reserved to the states.”136
The next year, in United States v. Butler, the U.S. Supreme Court struck down another federal tax
because the tax infringed on powers reserved to the states under the Tenth Amendment.137 In
Butler, the act at issue included a tax on agricultural producers to raise funds to subsidize certain
crops and control agricultural commodity prices.138 The Court ruled that Congress did not hold
the power to regulate the “purely local activity”139 of controlling agricultural production, because
the power to regulate local activity was reserved to the states.140
The Supreme Court has limited the applicability of these nearly 100-year-old decisions.141 In later
cases, the Court upheld regulatory taxes without specifying whether Congress had authority to
regulate the activity subject to tax under its other enumerated powers.142 For instance, in
Sonzinsky v. United States, the Court rejected a chal enge to a federal license tax on dealers,

statute was not adopted to penalize violations of the Amendment, it ceased to be enforceable at the date of repeal, if, in
fact, its purpose is to punish rather than to tax. T he only color for the assertion of congressional power to ordain a
penalty for violation of state liquor laws is the Eighteenth Amendment, which gave to the federal government power to
enforce nation-wide prohibition.”); see also U.S. CONST. amend. XVIII (“ After one year from the ratification of this
article the manufacture, sale, or transportation of intoxicating liquors within, the importation thereof into, or the
exportation thereof from the United States and all territory subject to the jurisdiction thereof for beverage purposes is
hereby prohibited.”).
134 Constantine, 296 U.S. at 295.
135 Id. at 295–96.
136 Id. at 296.
137 297 U.S. 1 (1936).
138 Id. at 56; Mason, supra note 122, at 1000. In reaching its decision, the Court’s analysis highlighted the tax’s
departure from the general understanding of the term “ tax” as used in the Constitution. Butler, 297 U.S. at 61; see id. at
67. T he Court explained the term “ tax” connotes an “ exaction for the support of the Government” as opposed to an
“expropriation of money from one group from another.” Id. at 61. T he Court conceded such a tax may be constitutional
“when imposed to effectuate regulation of a matter in which both groups are interested and in respect of which there is
a power of legislative regulation.” Id.
139 Butler, 297 U.S. at 63–64 (“[The act’s] stated purpose is the control of agricultural production, a purely local
activity, in an effort to raise the prices paid the farmer. Indeed, the Governm ent does not attem pt to uphold the validity
of the act on the basis of the com m erce clause
, which, for the purpose of the present case, may be put aside as
irrelevant.” (emphasis added)).
140 Id. at 68–69.
141 See NFIB, 567 U.S. 519, 572–73 (2012) (“Congress’s ability to use its taxing power to influence conduct is not
without limits. A few of our cases policed these limits aggressively, invalidating punitive exactions obviously designed
to regulate behavior otherwise regarded at the tim e as beyond federal authority. More often and more recently we have
declined to closely examine the regulatory motive or effect of revenue-raising measures. We have nonetheless
maintained that ‘there comes a time in the extension of the penalizing features of the so -called tax when it loses its
character as such and becomes a mere penalty with the characteristics of regulation and punishment. ’” (emphasis
added) (citations omitted) (quoting Bailey v. Drexel Furniture Co., 259 U.S. 38, (1922))).
142 Mason, supra note 122, at 1066; see NFIB, 567 U.S. at 567 (“T oday, federal and state taxes can compose more than
half the retail price of cigarettes, not just to raise more money, but to encourage people to quit smoking. And we have
upheld such obviously regulatory measures as taxes on selling marijuana and sawed-off shotguns.” (citing Sonzinsky v.
United Stat es, 300 U.S. 506 (1937) and United States v. Sanchez, 340 U.S. 42 (1950)).
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importers, and manufacturers of certain firearms.143 The petitioner al eged the tax was “a penalty
imposed for the purpose of suppressing traffic in a certain noxious type of firearms, the local
regulation of which is reserved to the states.”144 The Court explained:
Every tax is in some measure regulatory. To some extent it interposes an economic
impediment to the activity taxed as compared with others not taxed. But a tax is not any
the less a tax because it has a regulatory effect; and it has long been established that an Act
of Congress which on its face purports to be an exercise of the taxing power is not any the
less so because the tax is burdensome or tends to restrict or suppress the thing taxed.
Inquiry into the hidden motives which may move Congress to exercise a power
constitutionally conferred upon it is beyond the competency of courts. They will not
undertake, by collateral inquiry as to the measure of the regulatory effect of a tax, to ascribe
to Congress an attempt, under the guise of taxation, to exercise another power denied by
the Federal Constitution.145
Similarly, in United States v. Sanchez, the U.S. Supreme Court upheld a tax on unregistered
transfers of marijuana that was chal enged based on its penal nature.146 In upholding the tax, the
Court remarked, “It is beyond serious question that a tax does not cease to be valid merely
because it regulates, discourages, or even definitely deters the activities taxed.”147 Moreover, the
Court stated, “Nor does a tax statute necessarily fall because it touches on activities which
Congress might not otherwise regulate.”148
In NFIB, the U.S. Supreme Court confirmed that the taxing power provides Congress with the
authority to use taxes to carry out regulatory measures that might be impermissible if Congress
enacted them under its other legislative powers.149 In NFIB, the Court upheld the constitutionality
of a provision in the Patient Protection and Affordable Care Act150 requiring individuals to either
purchase minimum health insurance (commonly referred to as the “individual mandate”) or pay a
“penalty” in lieu of purchasing minimum health insurance.151 Despite being labeled a penalty in
the statute, the Court held the payment due in lieu of purchasing minimum health insurance (the
exaction) was a constitutional y permissible use of Congress’s authority under the taxing

143 300 U.S. at 512.
144 Id.
145 Id. at 513–14.
146 340 U.S. at 44 (1950).
147 Id. at 44.
148 Id.
149 567 U.S. 519, 571–72 (2012) (casting doubt on Congress’s authority to enact the individual mandate provision
under the Commerce Clause); see id. at 546–61(opinion of Roberts, C.J.) (finding neither the Commerce Clause nor the
Necessary and Proper Clause provides Congress with the authority to enact the individual mandate); id. at 647–61
(joint opinion of Scalia, Kennedy, T homas, and Alito, JJ., dissenting) (finding the Commerce Clause does not provide
Congress with the authority to enact the individual man date).
150 26 U.S.C. § 5000A.
151 NFIB, 567 U.S. at 574 (majority opinion).
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power.152 More specifical y, the Court ruled the exaction was a tax not a penalty for constitutional
purposes, and thus the exaction was not impermissibly regulatory under the taxing power.153
The Court applied a functional approach that looked at the exaction’s “substance and application”
to conclude the exaction was not a penalty for constitutional purposes.154 The Court found that the
exaction “look[ed] like a tax in many respects.”155 The Court observed that the exaction is located
in the Internal Revenue Code (IRC); the requirement to pay the exaction is located in the IRC; the
Internal Revenue Service (IRS) enforces the exaction; the IRS assesses and collects the exaction
“in the same manner as taxes”; the exaction does not apply to individuals who do not owe federal
income taxes because their income is less than the filing threshold; taxpayers pay the exaction to
the Treasury’s general fund when they file their tax returns; the exaction is based on “such
familiar factors” as taxable income, filing status, and the number of dependents; and the exaction
“yields the essential factor of any tax: it produces a least some revenue for the government.”156
The Court distinguished the exaction in NFIB from its past precedent in which it held Congress
lacked authority under the taxing power to use penalties disguised as taxes to regulate activities
that it could not regulate directly through its other enumerated powers.157 The case mainly
discussed in the majority opinion is Bailey v. Drexel Furniture Co.158 The Court found that three
of the four characteristics that it had used in Drexel Furniture Co. to conclude the child labor tax
was a penalty for constitutional purposes were not present with respect to the individual mandate
provision at issue in NFIB.159 Unlike Drexel Furniture Co., the Court found: (1) the exaction was
not “prohibitory” because the exaction was “far less” than the cost of insurance; (2) there was no
scienter requirement—the exaction was not levied based on a taxpayer’s knowledge of
wrongdoing; and (3) the IRS collected the exaction and the IRS was prohibited from using “those
means most suggestive of a punitive sanction, such as criminal prosecution.”160
Additional y, in distinguishing penalties from taxes for constitutional purposes, the Court
explained that, “if the concept of penalty means anything, it means punishment for an unlawful
act or omission.”161 While the Court acknowledged that the purpose of the individual mandate
provision was to encourage the purchase of health insurance, the Court found the individual
mandate provision “need not be read to” make the failure to purchase health insurance
unlawful.162 As evidence of this, the Court emphasized that, besides the exaction itself, there were
no additional “negative legal consequences” for failure to purchase health insurance.163

152 Id.; see 26 U.S.C. § 5000A(b)(1) (“[T]here is hereby imposed on the taxpayer a penalty with respect to such
failures.”). T he penalty in lieu of purchasing health insurance is current ly zero. Whether the penalty in lieu of
purchasing minimum health insurance remains a tax for constitutional purposes, and accordingly, whether the
individual mandate remains constitutional are questions currently pending before the Supreme Court. T exas v. United
States, 945 F.3d 355 (5th Cir. 2019), cert. granted sub nom . California v. T exas, 140 S. Ct. 1262 (2020).
153 NFIB, 567 U.S. at 572–74.
154 Id. at 565 (quoting United States v. Constantine, 296 U.S. 287, 294 (1935)).
155 NFIB, 567 U.S. at 563.
156 Id. at 563–64.
157 Id. at 564–68.
158 259 U.S. 20 (1922).
159 NFIB, 567 U.S. at 565–66.
160 Id. at 566.
161 Id. at 567 (quoting United States v. Reorganized CF & I Fabricators of Utah, Inc., 518 U.S. 213, 224 (1996)).
162 NFIB, 567 U.S. at 567–68.
163 Id. at 568.
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Conclusion
The Framers envisioned a broad taxing power to support the national government and formulated
constitutional provisions to bring about that vision. Since the Nation’s founding, judicial
precedents have sustained Congress’s extensive power to tax. The U.S. Supreme Court has helped
ensure the power to tax is subject to few limitations. Taxpayers have made constitutional
chal enges to the manner in which Congress has imposed taxes based on express limitations in the
U.S. Constitution. That said, even where those chal enges succeeded in invalidating taxes,
Congress has found alternative ways to achieve similar results, whether Congress’s aim is raising
revenue or implementing a regulatory scheme.

Author Information

Milan N. Ball

Legislative Attorney



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