INSIGHTi
The Debt Limit in 2021
Updated November 24, 2021
Debt limit episodes have been a recurrent federal fiscal feature in the past two decades. Since 2002, the
debt limit has been modified 19 times. In August 2019, the Bipartisan Budget Act of 2019 (BBA 2019;
P.L. 116-37) suspended the debt limit through July 31, 2021. The limit was reset at just over $28.4 trillion
at the beginning of August 2021 and was raised by $480 billion on October 14, 2021.
The debt limit issue in 2021 has a few unique characteristics. The COVID-19 pandemic remains a source
of economic uncertainty. Fiscal responses spurred by the pandemic accelerated the pace of federal debt
accumulation. The U.S. Treasury also sharply increased its cash balances in 2020 to accommodate those
fiscal responses.
Since 2013, Congress has suspended the debt limit several times. The Bipartisan Budget Acts of 2015
(BBA 2015; P.L. 114-74), 2018 (BBA 2018; P.L. 115-123), and 2019 (BBA 2019; P.L. 116-37) that
adjusted statutory caps on discretionary spending imposed by the Budget Control Act of 2011 (BCA; P.L.
112-25) also suspended the debt limit. When those caps expired at the end of FY2021, the need for
legislation to modify them was rendered moot. Thus, the usual legislative vehicle for debt limit
modifications over the past decade became unavailable in 2021.
Before 2013, debt limit legislation typically specified a set dollar amount on outstanding debt, either in
stand-alone debt limit measures or packaged with other provisions, such as appropriations measures.
Extraordinary Measures in Use Since August 2, 2021
The U.S. Treasury has used “extraordinary measures” to help pay federal obligations since August 2,
2021, when Treasury Secretary Janet Yellen declared a “debt issuance suspension period” (DISP). A DISP
allows Treasury to suspend investments in Civil Service and U.S. Postal Service retirement funds.
Treasury also draws on certain other, smaller funds, such as the Exchange Stabilization Fund. Federal
financial operations continue normally, although debt limit restrictions complicate Treasury’s debt and
cash management. Secretary Yellen also notified Congress that the DISP would be extended on
September 28, 2021, October 18, 2021, and November 16, 2021. Once a debt limit episode ends, Treasury
must report on its use of extraordinary measures.
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Debt Limit Raised $480 Billion in October 2021
On September 21, 2021, the House passed a continuing resolution (H.R. 5305) to fund federal operations
through December 3. The measure also would have suspended the debt limit through December 16. On
September 27, however, the Senate declined to close further debate on the bill.
On September 28, Secretary Yellen wrote Congress that “Treasury is likely to exhaust its extraordinary
measures if Congress has not acted to raise or suspend the debt limit by October 18. At that point, we
expect Treasury would be left with very limited resources that would be depleted quickly.”
On September 29, the House passed a measure to raise the limit by $480 billion, which was intended to
give the Treasury resources to pay federal obligations through early December 2021. The Senate agreed to
the measure on October 7, 2021, and the President signed it on October 14, 2021. About $300 billion of
that increase was used to reset extraordinary measures.
Treasury Cash Balances
Treasury can pay obligations as long as it retains borrowing capacity, cash balances, and funds available
through extraordinary measures. In 2020 and 2021, Treasury’s cash balances had been much higher than a
decade ago, as Figure 1 shows. Before the Lehman Brothers investment bank collapsed in September
2008, Treasury cash balances were kept to minimal levels. Balances then fluctuated at levels mostly
below $100 billion. A 2015 Treasury advisory committee recommended increasing cash balances to cover
an average week’s outlays as a precaution against major financial disruptions.
Figure 1. Treasury Cash Balances, $Billions, FY2008-FY2022
Source: CRS calculations based on U.S. Treasury’s Daily Treasury Statement. Levels are weekly averages of cash balances of
the Treasury’s Federal Reserve Account. FY2022 values shown in red.
Cash balances rose sharply after the March 2020 COVID-19 pandemic declaration, as then-Treasury
Secretary Steven Mnuchin acted to enable rapid disbursement of CARES Act (P.L. 116-136) payments.
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After the debt limit suspension lapsed at the end of July 2021, Treasury’s cash balances had shrunk to
$459 billion. Just before the October 2021 debt limit increase, cash balances were $72 billion.
How Long Can Treasury Pay Federal Bills?
The October 2021 debt limit increase extended Treasury’s capacity to pay federal bills into December
2021 and possibly into January 2022. Nonetheless, unless the debt limit is modified, Treasury’s cash
balances and borrowing capacity at some point will be exhausted. Secretary Yellen warned of dire
consequences if the debt limit were not raised before Treasury’s resources were exhausted. Moody’s
warned that a federal default would deal a “catastrophic blow to the nascent economic recovery from the
COVID-19 pandemic” and that “global financial markets and the economy would be upended ... even if
resolved quickly.”
Predicting when Treasury’s resources would run out is especially hard in 2021. Economic recovery and
growth in government revenues is rapid, although subject to “elevated” levels of uncertainty, according to
the Federal Reserve. About $1 trillion in COVID-related budgetary resources remains unspent, which
may add uncertainty about the pace of federal outlays. Large deficits also push up debt levels.
Enactment of the infrastructure measure, P.L. 117-58, mandated a transfer of $118 billion into the
Highway Trust Fund, which would be held as special Treasury securities. Secretary Yellen stated those
securities would be issued on December 15, 2021. A brief (available to congressional clients upon
request) from Wrightson/ICAP—a research unit specializing in Federal Reserve and Treasury
operations—notes that tax receipts due on that date would bolster Treasury’s cash balances. Figure 2
shows recent Wrightson projections of federal debt and Treasury resources.
Although Secretary Yellen warned of “scenarios in which Treasury would be left with insufficient
remaining resources to continue to finance the operations of the U.S. government” after December 15,
2021, Wrightson/ICAP projects that Treasury’s resources would likely last until the end of December
2021, or even into mid-January 2022.
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Figure 2. Public Debt and Aggregate Treasury Borrowing Authority
Daily Level in Trillions of Dollars Since August 2021
Source: Wrightson ICAP, Money Market Observer, November 22, 2021.
Notes: Values projected from November 18, 2021, through December 20, 2021. Debt series includes pending trust fund
investments deferred using extraordinary measures.
Author Information
D. Andrew Austin
Analyst in Economic Policy
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