Global Debt Interest Bill Reaches $2 Trillion as Major Economies Face Rising Fiscal Costs
Global taxpayers are now shouldering an estimated $2 trillion a year in interest payments on government debt, according to data highlighted by Bull Theory in a post on X. The figure works out to roughly $5.5 billion a day, underscoring the growing cost of servicing accumulated debt rather than financing new public spending.
The claim comes as interest expenses have become an increasingly important component of government budgets in several major economies. Bull Theory also said annual interest costs have surpassed defense spending in Italy, the United States, the United Kingdom and France.
Interest Costs Become a Larger Budget Burden
The $2 trillion figure represents interest payments rather than reductions in the underlying debt principal. Governments can therefore continue carrying substantial debt balances even as significant amounts of public revenue are directed toward servicing the borrowing.
Recent data from the OECD shows that interest payments have become a growing fiscal pressure across advanced economies. In 2024, gross interest payments among OECD countries reached 3.3% of GDP, up from 3.0% in 2023 and 2.7% during the 2015-19 period. The OECD said governments were projected to devote a larger share of revenue to interest payments than to several major public functions, including defense and housing.
The United States provides one of the clearest examples of the trend. Annual net interest payments on U.S. federal debt exceeded $1 trillion in 2025, according to an analysis from Econofact. The figure was about $150 billion higher than federal defense spending that year.
The Congressional Budget Office projects that U.S. net interest outlays will rise from about $1.0 trillion in 2026 to $2.1 trillion by 2036 under its current baseline.
Defense Spending Faces a Growing Fiscal Rival
The comparison between debt interest and defense spending highlights how borrowing costs can compete with other government priorities for available resources.
Bull Theory's post specifically identified Italy, the United States, the United Kingdom and France as countries where interest costs have crossed defense spending. While the precise comparison can vary depending on whether gross or net interest and which defense-spending measure are used, the broader fiscal pressure is documented across major economies.
Italy, for example, recorded public debt equivalent to 137.1% of GDP in 2025, while interest expenses remained at 3.9% of GDP, according to the International Monetary Fund.
The rising cost of servicing debt can also become more significant when governments refinance existing obligations at higher interest rates. Larger debt balances combined with elevated borrowing costs can increase the amount of revenue required simply to meet interest obligations.
Debt Service Adds Pressure to Government Budgets
The growing interest burden does not necessarily mean governments are failing to make debt payments. Interest payments are a normal component of sovereign borrowing. The fiscal concern arises when those payments consume an increasing share of public revenue and limit room for other spending priorities.
For the United States, the CBO expects net interest outlays to continue increasing over the next decade, with interest costs projected to reach 4.6% of GDP by 2036.
The $2 trillion global estimate cited by Bull Theory therefore points to a broader issue facing governments: the cost of maintaining existing debt is becoming an increasingly visible part of national budgets. The comparison with defense spending offers one measure of how large that obligation has become.
Writer: Marcus RenfieldCrypto Market Analyst & Onchain WriterMarcus Renfield covers cryptocurrency markets with a focus on onchain data, Bitcoin price action, and emerging market narratives. His writing examines how capital flows, network activity, and broader market structure influence short- and medium-term trends.He aims to provide clear, data-informed analysis for readers seeking a deeper understanding of crypto market dynamics.