The U.S. budget deficit widened to $1.833 trillion in fiscal 2024 even as federal receipts reached a record. Final government data show how rising interest costs and higher spending outpaced revenue growth, which agencies drove the increase and why two widely cited measures of federal interest expense produce different totals.
Key Takeaways
- The fiscal 2024 deficit increased $138 billion, or 8%, from fiscal 2023.
- Federal receipts rose 11% to $4.919 trillion, while outlays climbed 10% to $6.752 trillion.
- Gross interest on the public debt reached $1.133 trillion, a 29% annual increase.
- The deficit equaled 6.4% of gross domestic product, above the 50-year average of 3.8%.
- Debt held by the public ended the fiscal year at approximately 97.8% of GDP.
The U.S. budget deficit moved closer to $2 trillion during the year ended Sept. 30, 2024, after federal spending increased by $617 billion and revenue rose by $479 billion. The resulting $1.833 trillion gap was the largest annual shortfall outside the pandemic years.
The Congressional Budget Office reported that the deficit rose from $1.695 trillion and increased to 6.4% of GDP from 6.2% one year earlier.
Interest Costs Became a Larger Budget Pressure
Interest was one of the largest contributors to the spending increase. Treasury figures showed gross interest on the public debt rising 29% to $1.133 trillion, an increase of approximately $254 billion.
That gross total includes interest paid to federal trust funds and other government accounts. Because those intragovernmental payments do not increase total federal outlays, the net budget measure was lower at roughly $882 billion.
The CBO reported $949 billion in net interest outlays using a broader presentation in its monthly budget review. Both measures rose sharply as interest rates and debt increased.
As lower-rate Treasury securities matured, refinancing occurred at higher yields, linking the federal trend to higher borrowing costs across the economy.
The effect develops gradually because higher yields apply as securities mature and new debt is issued at prevailing market rates.
Record Revenue Could Not Offset Higher Outlays
Federal receipts reached $4.919 trillion in fiscal 2024, up 10.8% from the previous year. Individual income tax collections increased by about $250 billion, while corporate income taxes rose by approximately $110 billion. Social insurance and retirement receipts added about $95 billion.
Some of that growth reflected payments shifted into fiscal 2024 after tax deadlines were postponed for taxpayers in federally declared disaster areas. The timing effect strengthened the year-over-year comparison and means the increase did not come from underlying economic activity alone.
Receipts equaled 17.1% of GDP, near the 50-year average cited by the CBO. Outlays reached 23.4% of GDP, leaving a difference large enough to keep the U.S. budget deficit above 6% of national output.
Interest-rate expectations also influence Treasury yields and the rates applied when federal debt is refinanced. Changes in the Federal Reserve rate outlook can therefore affect future financing conditions without changing the fiscal 2024 result already recorded.
Major Programs Added to Federal Spending Growth
Social Security, health programs and defense also recorded higher spending. CBO data showed Social Security benefits increasing by $106 billion to $1.448 trillion, reflecting cost-of-living adjustments and a larger number of beneficiaries.
Medicare outlays increased as enrollment and payment rates rose. Military spending by the Defense Department reached $826 billion, up from $776 billion in fiscal 2023. Net interest was therefore comparable in scale with other major federal spending categories.
Education spending produced an unusually large year-over-year change because fiscal 2023 included accounting effects from a proposed student loan cancellation plan that was later blocked. Reversing those entries reduced reported 2023 spending and made the fiscal 2024 increase appear larger.
Calendar shifts created another complication. With Oct. 1 falling on a weekend in both years, some scheduled payments moved into the preceding fiscal year. Excluding those shifts, the CBO estimated that the deficit would have grown 13% rather than the reported 8%.
The Fiscal Data Shows a Persistent Financing Gap
The final deficit was lower than official estimates published earlier in 2024. Treasury reported that the total came in $76 billion below the March baseline of $1.91 trillion and $144 billion below the $1.98 trillion estimate released in July.
Even so, the shortfall remained well above the $984 billion deficit recorded in fiscal 2019. That comparison spans major economic disruptions and accounting changes, so it does not identify a single cause. It does show how the scale of annual federal borrowing expanded over five years.
Debt held by the public reached about 97.8% of GDP at the end of fiscal 2024, according to the CBO, up from 96% one year earlier. The measure covers Treasury securities held outside federal government accounts and compares that debt with the economy’s annual output.
The fiscal 2024 U.S. budget deficit reflects two developments moving together. Revenue reached a record, but higher program spending and debt-service costs increased by more, leaving the government dependent on additional borrowing to cover the difference.
Frequently Asked Questions
What was the U.S. budget deficit in fiscal 2024?
The U.S. budget deficit totaled $1.833 trillion in fiscal 2024, which ended Sept. 30, 2024. It increased by $138 billion, or 8%, from fiscal 2023.
Why did the deficit grow when federal revenue increased?
Federal revenue rose by $479 billion, but outlays increased by $617 billion. Higher interest costs and increased spending across several major programs outweighed the revenue gain.
How much did the federal government spend on interest?
Gross interest on the public debt totaled $1.133 trillion. After accounting for intragovernmental payments and other adjustments, the net budget measure was approximately $882 billion.
Why does the CBO report a different interest figure?
The CBO reported $949 billion in net interest outlays under its broader monthly budget presentation. Different accounting treatments explain why that total does not match the approximately $882 billion net figure used in other federal budget summaries.
