Explainer · Congress

Debt Ceiling vs. Government Shutdown: Two Different Fights

Last reviewed: September 26, 2026

Short answer: A government shutdown happens when Congress has not passed the appropriations that let agencies spend money, so affected agencies must stop work that is not legally excepted. The debt ceiling is a separate legal cap on how much the Treasury may borrow. Hitting it without raising or suspending it would bar new borrowing and force the government to pay bills only from incoming revenue and existing debt. A shutdown is about permission to spend; the debt ceiling is about paying for spending Congress has already approved.

The constitutional roots

The Constitution gives Congress control over both money in and money out. Article I, Section 8 grants Congress the power “To borrow Money on the credit of the United States.” Article I, Section 9 says: “No Money shall be drawn from the Treasury, but in Consequence of Appropriations made by Law.”

Shutdowns: when spending authority lapses

The federal fiscal year begins October 1. Congress funds agencies through 12 regular appropriations bills or, if those are not done, a stopgap continuing resolution (CR). When neither is in place, a “funding gap” begins. The Antideficiency Act generally bars agencies from obligating funds without appropriations, with exceptions for activities involving “the safety of human life or the protection of property,” according to the Congressional Research Service (CRS). Agencies then shut down affected activities and furlough employees who are not excepted.

Key facts from CRS’s May 2026 overview:

• Since FY1977, 23 funding gaps have occurred, ranging from 1 day to 75 full days. About half lasted three days or less.
• A government-wide funding gap began October 1, 2025, and ended November 12, 2025, after 42 full days.
• A second gap, affecting activities in six regular appropriations bills, lasted three full days beginning January 31, 2026.
• A third gap, affecting the Department of Homeland Security, ran from February 14 to April 30, 2026, lasting 75 full days.

Programs funded outside annual appropriations, such as Social Security, may also be affected if they rely on activities paid for with annual appropriations, an older CRS report notes.

The debt ceiling: a cap on borrowing

Treasury defines the debt limit as “the total amount of money that the United States government is authorized to borrow to meet its existing legal obligations, including Social Security and Medicare benefits, military salaries, interest on the national debt, tax refunds, and other payments.” It adds: “The debt limit does not authorize new spending commitments.”

The limit is set in law at 31 U.S.C. §3101. When the government nears it, Treasury can use temporary “extraordinary measures” to delay the date the limit binds. If those run out, CRS explains, the law bars Treasury from incurring any additional debt, and Treasury would have to meet spending demands only from incoming revenue and existing debt. Treasury calls a default on the government’s obligations “an unprecedented event in American history.”

Where the numbers stand

• The budget reconciliation law enacted July 4, 2025 (P.L. 119-21) raised the debt limit by $5 trillion to $41.1 trillion (CRS).
• As of September 3, 2025, total outstanding debt was $37.4 trillion: $30.1 trillion held by the public and $7.3 trillion in intragovernmental debt (CRS).
• Since 2013, Congress has mostly resolved debt-limit episodes by suspending the limit for a set period (CRS).

Both fights run through the ordinary legislative process described in how a bill becomes law. Borrowing costs also depend on interest rates; see how the Fed sets interest rates.