$40 Trillion US Debt: Rising Interest Costs Put Pressure on Economy
The US national debt has crossed the $40 trillion mark as borrowing costs remain elevated, putting renewed focus on interest payments, Treasury yields and President Donald Trump‘s criticism of the Federal Reserve.
The United States has crossed a landmark financial threshold, with its national debt surpassing $40 trillion, underscoring the growing fiscal pressure facing the world’s largest economy. The milestone comes as the cost of servicing government borrowing remains elevated and long-term US Treasury yields stay high.
The development has also renewed President Donald Trump’s criticism of the Federal Reserve. Trump has argued that the US should be paying significantly less to borrow and has called for lower interest rates, saying cheaper borrowing could save the government substantial amounts of money.
Trump Calls For Lower Borrowing Costs
Trump has said the United States should have the “lowest interest rate” on its debt, arguing that lower rates would reduce the government’s interest burden.
The President has also criticised Federal Reserve officials, accusing some of having political motivations. At the same time, he has praised Fed Chairman Kevin Warsh, whom he nominated earlier this year.
The issue is particularly significant because the US government’s borrowing costs are not determined solely by the Federal Reserve. Treasury yields are shaped by market demand, inflation expectations and investors’ assessment of the government’s fiscal position.
When investors demand higher returns for holding long-term US government bonds, the cost of financing America’s debt increases.
Why $40 Trillion Debt Matters
The headline figure is enormous, but economists say the size of the debt alone does not determine whether the US faces an immediate financial crisis.
The United States has an economy of roughly $30 trillion and benefits from the dollar’s role as the world’s dominant reserve currency. That status gives Washington greater borrowing flexibility than many other countries.
The bigger concern is the cost of servicing the debt.
The US is now spending close to $1 trillion a year on interest payments, according to estimates cited in the NDTV report. The country’s interest burden has also moved above defence spending, highlighting how rapidly debt servicing has become a major component of federal expenditure.
30-Year Treasury Yield Crosses 5%
The pressure is particularly visible in the long-term bond market.
The yield on the US 30-year Treasury recently reached 5.22%, its highest level since 2001, according to the report. Higher yields mean the government must pay more when it borrows or refinances debt.
That creates a difficult cycle: as the debt stock expands, even a relatively small increase in average borrowing costs can translate into billions of dollars in additional interest payments.
Those payments can then compete with spending on infrastructure, healthcare, defence and other government priorities.
US Debt Has Doubled Over The Past Decade
The pace of debt accumulation is another source of concern.
US debt has risen from roughly $19 trillion to $40 trillion over the past decade, according to experts cited by NDTV. Financial analysts say the trajectory of the debt and the rising interest burden are more important indicators than the absolute number alone.
The increase has been driven by years of budget deficits, pandemic-era spending, tax and spending policies, rising entitlement costs and growing interest payments. Reuters reported that US debt has more than doubled since 2017, with pandemic spending accounting for a significant portion of the increase.
What It Means For The US Economy
A sustained rise in government borrowing costs could have consequences beyond Washington.
Higher Treasury yields can influence borrowing costs across the economy, including mortgages, corporate loans and other forms of credit. If interest rates remain elevated, businesses may face higher financing costs while households could see pressure on housing and consumer borrowing.
At the same time, higher interest payments leave the government with fewer resources for other priorities.
The central question for policymakers, therefore, is not simply whether the US has $40 trillion in debt, but whether economic growth can keep pace with the cost of carrying that debt.
US Debt Compared With China And India
The United States is not alone in carrying a substantial debt burden.
China also has a large government debt load, although direct comparisons are complicated because countries use different definitions and accounting frameworks. China’s 2026 central-government treasury debt limit stands at 48.55 trillion yuan, while local government debt adds considerably to its overall liabilities.
India’s debt is considerably smaller in dollar terms. The Centre’s outstanding debt and other liabilities were estimated at around Rs 200.53 lakh crore at the end of March 2026, with the Centre’s debt-to-GDP ratio at 56.1%, according to the figures cited by NDTV.
The Bigger Question
The $40 trillion milestone is unlikely to trigger an immediate crisis by itself. The US retains significant advantages because it borrows in its own currency and the dollar remains the world’s primary reserve currency.
But the combination of rapid debt growth, high interest rates and rising interest payments is creating a more difficult fiscal environment.
For Trump, that makes the cost of borrowing a central issue. For investors, the challenge is whether Treasury yields can remain elevated without placing further pressure on economic growth.
As America’s debt pile continues to grow, the debate is shifting from the size of the number to a more fundamental question: how much will the United States have to pay to carry it?
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