When Will We Reach the Debt Limit (Again)?

Last July, the 2025 reconciliation bill increased the federal debt limit by $5 trillion, from $36.1 trillion to $41.1 trillion. Since then, debt subject to the limit has increased by $2.9 trillion, consuming more than half of the increased borrowing authority.

BPC now estimates that, absent congressional action, the U.S. will most likely reach the debt limit once again sometime between late winter and mid-summer of 2027. Once the government’s borrowing limit is reached, the Treasury Department would need to rely on its cash reserves and accounting maneuvers known as extraordinary measures to meet the nation’s ongoing expenses. Those resources are expected to last roughly six to nine months, at which point the federal government would reach the X Date, the date on which it could no longer meet its financial obligations in full and on time.

This preliminary projection from BPC is informed by government cash flow data through May 2026, including revenues from the most recent tax season. It applies the Congressional Budget Office’s February budget and economic projections and adjusts for known changes as well as administrative, legislative, and economic uncertainties.

Several Significant Variables

The wide range of potential dates reflects uncertainty about government cash flow and borrowing needs in the months ahead. That uncertainty stems from many factors. Three that warrant particularly close attention are:

Military spending related to the conflict with Iran. As of mid-May, the Pentagon estimated that the conflict had cost approximately $29 billion, primarily by creating the need to replenish high-cost weaponry. Actual outlays for defense are not significantly above trend to date but may increase in the coming months. Additionally, the president’s fiscal year 2027 budget request included a 42% increase to defense spending, while media has reported that the administration is preparing a supplemental funding request for Congress related to the Iran conflict. The size of any congressional response and the pace of spending under new and existing budget authority could significantly affect government borrowing.

Tariff revenues and refunds. In the 2025 debt limit episode, tariff revenues provided a significant cash source for Treasury to continue operations. The Supreme Court ruled that many of these tariffs were illegal, however, and Customs and Border Protection is now administering the process for refunding as much as $166 billion, plus interest. Additionally, the Court of International Trade ruled that new tariffs imposed by the administration to replace those overturned tariffs were also unlawful. The administration is appealing the CIT ruling, which will determine whether additional refunds are required and influence future collections. Finally, these new tariffs as currently written expire at the end of July; whether the administration can renew them or replace them with other tariff authorities, such as enforcement of Section 301, will have a meaningful impact on debt limit timing.

Changing economic conditions. Economic growth and employment remain steady, supporting individual income and payroll tax receipts that are approximately 5% higher than the same period last fiscal year. Corporate tax collections have fallen by 23%, however, as businesses claim deductions for certain investments allowed under the 2025 reconciliation act. Higher energy costs caused by the war have boosted inflation in recent months, which may increase economic strain for households and businesses if energy costs stay elevated. An economic slowdown caused by energy costs or other factors would increase government safety net spending and slow revenue.

Treasury’s Cash and Debt Management

The Treasury Department’s cash management practices will also influence the timing of when the debt limit is reached.1 Treasury’s cash balance has grown significantly over time, and the department anticipates holding $950 billion on hand at the end of FY2026 on September 30. Treasury consults with an advisory committee to inform its cash and debt management practices but holds considerable discretion in how it handles tradeoffs between cash and debt issuance to finance government operations.

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For example, drawing down these cash reserves to pay bills in advance of reaching the debt limit would delay the debt limit’s arrival. But such an approach would leave fewer reserves to draw from after reaching the limit, meaning a shorter period of time between then and the X Date. Alternatively, if Treasury increased its cash reserves, that would mean greater debt issuance and an accelerated arrival of the debt limit. More than $1 trillion in cash reserves would then allow the federal government to continue meeting obligations over a much longer period between reaching the limit and the X Date.

In short, Treasury cash management decisions primarily influence the timing of when the debt limit is reached. They hold much less influence over X Date timing, which is mostly driven by federal government spending and revenues.2

For purposes of this preliminary projection, BPC assumes that Treasury will retain approximately the same cash reserves as it is estimating for the end of September through the time at which the debt limit is reached.

The Cost of Waiting

Prior debt limit episodes have demonstrated the costs and risks to taxpayers from delayed action on the debt limit, underscoring the benefit of lawmakers acting far in advance of the X Date. Interest rates on short-term U.S. securities increased during debt limit episodes in 2011 and 2013, adding to total net interest costs funded by taxpayer dollars. All three major credit rating agencies have now downgraded U.S. government debt. Standard & Poor’s and Fitch acted in the aftermath of debt limit episodes in 2011 and 2023, respectively. Moody’s followed suit in 2025 (after lowering its outlook based on debt limit brinksmanship). Sovereign credit downgrades are especially concerning because they can cause some investment funds to reduce their holdings of U.S. securities, leading to higher borrowing costs. This makes it more expensive for Americans to borrow funds to purchase homes, cars, and more.

Failing to address the debt limit in a timely manner can undermine investor confidence that the federal government will make good on all its obligations, and lenders may demand higher interest rates, which results in higher costs for households and businesses alike. During the culmination of the 2023 debt limit episode, Treasury sold $50 billion of four-week securities scheduled to mature on June 6 at a record 5.84% yield, the highest auction yield since 2000, demonstrating that there is a cost to brinkmanship.

Further, a government operating near its borrowing limit would have limited capacity to respond expeditiously to an escalation of the Iran conflict, a sudden economic downturn, or another black swan event.

The upcoming debt limit episode differs from the 2025 debt limit episode because the government faces a statutory dollar ceiling on borrowing instead of the end of a debt limit suspension on a date certain. ︎

Counterintuitively, all else equal, building up cash reserves and reaching the debt limit earlier could mean a later X Date, because a longer debt issuance suspension period, declared upon reaching the limit, may lead to the availability of additional extraordinary measures. ︎

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