The Impact of Debt Interest Payments

Three charts and some explanation on net interest payments on debt for 2024 and higher in 20525 and 2026. Much of this is due to the pandemic and Biden paying out funds in support of the constituency. The result is higher interest rates as the Fed attempts to stabilize the economy and gain control of spending.

I do not expect any of the efforts on Trump to deplete the ranks of the Federal Government and the various departments to have much impact. That is other than decrease the service which comes out of those entities. I do expect the US to go into recession due to deflation. If I were to make a guess, I believe we will have a recessional experience similar to what the US experienced in 1981 and 1982.

CBO’s latest projections show:

  • Net interest payments will total $13.8 trillion from Fiscal Year (FY) 2026 through 2035.
  • Interest will rise from $881 billion in FY 2024 to $1 trillion in FY 2026 before climbing further to nearly $1.8 trillion in 2035.
  • Interest on the debt is already larger than spending on Medicare and national defense – it is second only to Social Security.

Net interest has been exploding over the past few years, with payments rising from $223 billion in 2015 to $345 billion in 2020 before nearly tripling to $881 billion in 2024. In 2025, CBO projects net interest will total $952 billion, a near-record 3.2 percent of Gross Domestic Product (GDP), and interest will eclipse its record as a share of the economy in 2026.

In 2024, interest payments were so large that they outgrew spending on Medicare – the nation’s largest federal health care program for seniors and people with disabilities – as well as the entirety of spending on national defense. Over the next decade, interest payments will total $4.3 trillion more. An ~ $13.8 trillion total and more than we are going to spend on defense.

By next year, interest is projected to reach a record 3.2 percent of Gross Domestic Product (GDP) – compared to 1.5 percent just three years ago – which exceeds the record set back in FY 1991. And by 2051, interest costs are projected to reach 5.9 percent of GDP and become the single largest line item in the federal budget.

This spells trouble for debt sustainability. With long-term nominal economic growth projected to average around 4 percent per year, the interest rate on new debt is now well above the growth rate (R>G). This could lead to a dangerous debt spiral, particularly as rising debt further pushes up interest rates and stifles economic growth. A 1 percentage point increase in interest rates over the Congressional Budget Office’s baseline will add another $2.9 trillion to the debt.

Although most of our national debt was issued when interest rates were low, that debt is rolling over into a high-rate environment and further borrowing continues. Rising Treasury interest rates will put even more pressure on our high and rising debt; the best way to mitigate these costs is through thoughtful and responsible fiscal reforms that limit additional borrowing, reduce inflationary pressures, and push down interest rates.