Washington is facing a growing fiscal challenge as interest payments on the national debt surge, now exceeding levels spent on critical programs like national defense and Medicaid. The United States is currently paying nearly $970 billion annually to service the interest on its $38.8 trillion national debt – a figure that has nearly tripled since 2020, according to a February analysis by the Committee for a Responsible Federal Budget (CRFB).
For many Americans, the sheer scale of these interest payments remains largely unseen, obscured by debates over more visible spending priorities. However, budget experts warn this represents a significant and often overlooked fiscal emergency. The escalating costs are driven by a combination of factors: a rapidly increasing national debt and rising interest rates following a period of historically low rates after the pandemic.
The rising burden of interest on the national debt is not merely an accounting issue; it’s a fundamental shift in how federal resources are allocated. As a percentage of the economy, interest costs have doubled from 1.6% of GDP in 2021 to a record 3.2% in 2025. This means a larger portion of every tax dollar is now directed towards creditors rather than domestic programs or investments.
The Looming $2 Trillion Threshold
The situation is projected to worsen considerably in the coming years. The Congressional Budget Office (CBO) forecasts that net interest costs will more than double again, reaching $2.1 trillion by 2036. This dramatic increase is fueled by expectations that the debt held by the public will grow by 86%, adding roughly $26 trillion, and average interest rates will rise by another half a percentage point.
By 2036, the CRFB projects that interest payments will consume a full quarter of all federal revenue, a substantial increase from roughly one-fifth today and just one-tenth in 2021. To place this into perspective, for every four dollars the U.S. Government collects in taxes, a full dollar will be dedicated solely to paying interest on the national debt – leaving less available for essential services like infrastructure, education, and research.
A Shift in Budgetary Priorities
Currently, interest payments are roughly on par with spending on Medicare, one of the most popular and politically sensitive federal programs. However, the CBO projects a significant shift in the near future. By 2029, net interest costs are expected to surpass Medicare, becoming the second-largest government program, trailing only Social Security. This milestone is less than four years away.
The long-term trajectory is even more concerning. By 2047, the CBO forecasts that interest costs will exceed even Social Security spending, ultimately becoming the single largest line item in the entire federal budget. This would mean that interest payments would surpass spending on retirement income, healthcare for seniors, and national defense combined.
A Crowding-Out Effect
The consequences extend beyond simple accounting. As interest costs rise, they effectively crowd out other national priorities. The CRFB estimates that rising interest costs will account for 28% of all nominal spending growth over the next decade and 120% of all spending growth as a share of GDP. This means that other programs will have to be reduced or eliminated to accommodate the increasing burden of debt service.
As of February, the national debt stood at approximately $38.77 trillion, increasing by roughly $6.43 billion each day. At this rate, the U.S. Is projected to surpass $39 trillion in debt by April.
Fiscal watchdogs, including the CRFB, argue that a credible deficit reduction plan is essential to address this issue. Such a plan would aim to stabilize the debt, ease pressure on interest rates, and prevent the interest bill from ultimately consuming the entire federal budget. However, as of now, Washington has yet to produce a comprehensive and viable solution.
The escalating cost of servicing the national debt presents a complex challenge with far-reaching implications for the U.S. Economy and future generations. The next key date to watch is April, when the national debt is projected to reach $39 trillion. Further updates and analysis will be released by the CBO and the CRFB in the coming months.
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