
 
 
July 21, 2020
Reliance on Treasury Department and IRS Tax Guidance
The Treasury Department and Internal Revenue Service 
withdraw a proposed treasury regulation based on the 
(IRS) use several forms of guidance to help taxpayers 
comments they receive. After considering the public’s 
understand the Internal Revenue Code (IRC) and to inform 
comments, the agencies may issue a final regulation and 
taxpayers of Treasury and the IRS’s position on particular 
publish it in the Federal Register as a treasury decision. 
tax issues. For the most part, this tax guidance can be split 
into three categories: (i) treasury regulations, (ii) sub-
Treasury and the IRS issue temporary treasury regulations 
regulatory guidance published in the Internal Revenue 
when they conclude that the public requires immediate 
Bulletin (IRB), and (iii) unpublished sub-regulatory 
guidance before the publication of final treasury 
guidance (i.e., sub-regulatory guidance not published in the 
regulations. Temporary treasury regulations also are 
Federal Register or the IRB). Former IRS Chief Counsel 
published in the Federal Register as treasury decisions. 
have remarked that the type of guidance issued reflects a 
When Treasury and the IRS issue a temporary treasury 
balance between taxpayers’ need for certainty and Treasury 
regulation, they simultaneously issue a corresponding 
and the IRS’s need for latitude in administering tax laws.  
proposed treasury regulation. IRC Section 7805(e) 
mandates that temporary treasury regulations expire three 
In a tax dispute with Treasury or the IRS, taxpayers can rely 
years after issuance. 
on treasury regulations and sub-regulatory guidance 
published in the IRB (such as revenue rulings, revenue 
Pursuant to a memorandum of agreement between Treasury 
procedures, notices, and announcements) to support their 
and the Office of Management and Budget (OMB) dated 
tax position, as long as the guidance is not contrary to or 
April 11, 2018,  tax regulatory actions that are likely to 
inconsistent with the law. Taxpayers are generally unable to 
result in any of three types of tax regulations are subject to 
rely on unpublished sub-regulatory guidance in tax 
another layer of review. These are (i) regulations that create 
disputes. Given that Treasury and the IRS often issue 
serious inconsistencies or interfere with actions taken or 
unpublished sub-regulatory guidance in response to time-
planned by another agency; (ii) regulations that raise novel 
sensitive issues, taxpayers may choose to exercise caution 
legal or policy issues; and (iii) regulations that have an 
when the need for clarity and certainty is at its greatest, and 
annual nonrevenue effect on the economy of $100 million 
might wait for Congress to potentially enact clarifying 
or more. Subject to listed exceptions, the OMB’s Office of 
legislation or for courts to address the legal issue in 
Information and Regulatory Affairs (OIRA) reviews these 
litigation. That said, Treasury and the IRS sometimes may 
tax regulatory actions in accordance with Executive Order 
include a statement in their unpublished sub-regulatory 
12866.  During the OIRA review process, OIRA may meet 
guidance conveying that they will not take a position 
with business representatives, nongovernmental 
inconsistent with or contrary to the guidance. 
organizations, and the public to discuss these actions. 
This In Focus analyzes the ability of taxpayers to rely on 
In litigation disputing the validity of a treasury regulation, 
valid treasury regulations and the more common types of 
Treasury and the IRS may argue that a court should show 
sub-regulatory tax guidance.  
deference to their interpretation of a statute that they 
administer. Historically, courts distinguished tax 
Common Types of Treasury and 
regulations promulgated under specific statutory grants of 
IRS Tax Guidance 
authority from tax regulations promulgated under IRC 
Section 7805(a), which provides the Treasury Secretary 
Treasury Regulations 
with a general power to issue “all needful rules and 
Treasury regulations are the most significant type of tax 
regulations” to enforce the IRC. Courts showed greater 
guidance issued by Treasury and the IRS, and courts 
deference to Treasury and the IRS when they promulgated 
generally afford them the greatest deference. Treasury 
tax regulations pursuant to a statute that expressly called for 
regulations can provide guidance on newly enacted 
the agencies to create detailed rules to implement the statute 
legislation and tax issues that arise with respect to pre-
or fill a particular gap. However, following the U.S. 
existing laws. Taxpayers may rely on final and temporary 
Supreme Court’s decision in Mayo Foundation for Medical 
treasury regulations, but may not rely on proposed treasury 
Education and Research v. United States, courts now apply 
regulations unless they contain an express statement 
the judicial deference framework established by the 
permitting reliance. 
Supreme Court in Chevron U.S.A. Inc., v. Natural 
Resources Defense Council to evaluate whether a treasury 
Generally, proposed treasury regulations are published in 
regulation is valid, regardless of whether the agencies acted 
the Federal Register as a Notice of Proposed Rulemaking, 
under a specific statutory grant of authority or IRC Section 
which invites the public to review and comment on the 
7805(a). 
proposed regulation. Treasury and the IRS may modify or 
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Reliance  on Treasury Department  and IRS  Tax Guidance 
Revenue Rulings 
in the IRB, but later sub-regulatory guidance can render a 
Revenue rulings are the IRS’s official interpretation of tax 
notice or announcement moot. 
laws, related statutes, tax treaties, and regulations as applied 
Treasury has stated it will not take positions inconsistent 
to a specific set of facts. They are published in the IRB. 
with an announcement or a notice published in the IRB 
Taxpayers may rely on revenue rulings when the taxpayer’s 
when the announcement or notice is in effect. In 
facts are substantially the same as the taxpayer’s facts 
determining the validity of the IRS’s action in an 
addressed in the revenue ruling. Revenue rulings foster 
announcement or notice, it is unclear if courts will afford 
uniformity and enable taxpayers to make informed 
decisions about their tax obligations.   
Treasury and the IRS any deference. 
Revenue rulings do not carry the same level of authority as 
Administrative Procedure Act 
treasury regulations. Taxpayers can rely on a revenue ruling 
Challenges to the Validity of 
published in the IRB, but later sub-regulatory guidance can 
Treasury and IRS Tax Guidance 
render a revenue ruling moot. Treasury has stated it will not 
Section 553 of the Administrative Procedure Act (APA) 
take positions inconsistent with a revenue ruling published 
generally requires federal agencies to follow notice-and-
in the IRB when the revenue ruling is in effect. Courts have 
comment rulemaking procedures before issuing, amending, 
not come to a consensus on what, if any, deference they 
or repealing legislative rules (i.e., rules that carry the force 
should afford to the IRS’s interpretation in a revenue ruling, 
of law). The APA does not require federal agencies to apply 
but they usually apply the framework set forth in the U.S. 
these same procedures to interpretive rules. The IRS 
Supreme Court’s opinion in Skidmore v. Swift & Company, 
contends, in Internal Revenue Manual 32.1.1.2.6, that most 
under which a court gives the IRS’s interpretation weight 
treasury regulations are interpretive rules, because the tax 
that is consistent with the strength of the agency’s 
statute that the treasury regulation implements “contains the 
persuasiveness. 
necessary legal authority for the action taken and any effect 
of the regulation flows directly from that statute.” 
Revenue Procedures 
Contemporary case law suggests that some of the tax 
The IRS announces administrative practices and procedures 
guidance that the IRS designates as  interpretive rules are, in 
through revenue procedures published in the IRB. While a 
fact, legislative rules subject to APA notice-and-comment 
revenue ruling informs the public of Treasury and the IRS’s 
rulemaking procedures. In Chamber of Commerce of United 
position on the application of a law, treaty provision, or 
States v. Internal Revenue Service, a district court 
regulation to a specific set of facts, a revenue procedure 
determined that a temporary treasury regulation was not an 
may provide return filing or other instruction concerning 
interpretive rule because it was substantive. The temporary 
that position. Revenue procedures cover diverse topics, 
treasury regulation adjusted the computation for 
such as the adoption of accounting methods, the 
determining whether a corporation should be treated as a 
computation of certain expenses, the methods of electronic 
surrogate foreign corporation. The court held that the 
filing, and the types of transactions that Treasury and the 
adjustments were “not mere interpretations of the statute, 
IRS are scrutinizing. Taxpayers may rely on revenue 
but substantive modifications to the application of the 
procedures when their facts are substantially the same as 
statute.” 
those described in the revenue procedure.  
The court relied on the U.S. Supreme Court’s 
decision in Chrysler Corporation v. Brown, which 
Like revenue rulings, revenue procedures do not have the 
describes legislative rules as substantive rules “affecting 
same level of authority as treasury regulations. Taxpayers 
individual rights and obligations.” 
can rely on a revenue procedure published in the IRB, but 
Another district court case, Bullock v. IRS, suggests a court 
later sub-regulatory guidance can render a revenue ruling 
could invalidate any type of tax guidance if the court finds 
moot. Treasury has stated it will not take positions 
the guidance constitutes a legislative rule and Treasury and 
inconsistent with a revenue procedure published in the IRB 
the IRS have failed to adhere to APA notice-and-comment 
when the revenue procedure is in effect. Some courts have 
rulemaking procedures. The district court found that a 
applied Sk idmore deference when reviewing the IRS’s 
revenue procedure was a legislative rule because it 
interpretation in a revenue procedure, but again there is no 
effectively amended a prior legislative rule—a treasury 
consensus on the proper standard of deference, if any. 
regulation promulgated after a public notice-and-comment 
Announcements and Notices 
period. In response to the decision in Bullock, the IRS 
published Notice 2019-47 in the IRB, which provides 
The IRS makes public pronouncements through 
penalty relief for taxpayers who relied on the revenue 
announcements and notices when time is of the essence. 
procedure invalidated by the district court. 
Announcements have immediate or short-term value. They 
can summarize laws and regulations without making 
The application of APA notice-and-comment rulemaking 
substantive interpretations, explain regulations that are 
procedures to Treasury and IRS tax guidance is a quickly 
imminent, and notify taxpayers of approaching deadlines. 
developing area of law. Treasury and IRS tax guidance may 
Notices may contain substantive interpretations of the IRC 
also face procedural challenges to their validity under the 
or other laws. Treasury and the IRS have used notices to 
Paperwork Reduction Act, the Regulatory Flexibility Act, 
inform taxpayers of the types of transactions that they are 
and the Congressional Review Act.  
scrutinizing. Treasury and the IRS may publish 
announcements and notices in the IRB. Generally, 
Milan N. Ball, Legislative Attorney   
taxpayers can rely on announcements and notices published 
IF11604
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Reliance  on Treasury Department  and IRS  Tax Guidance 
 
 
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