U.S. National Debt and Military Spending
For the first time since the Second World War, the United States' national debt has exceeded the size of its economy, reaching $31.27 trillion against a gross domestic product (GDP) of $31.22 trillion. By the end of April 2026, the debt-to-GDP ratio stood at 100.2%. This marks the first time U.S. debt has topped 100% of GDP since the pandemic year of 2020.
The Trump administration has disclosed an estimate of $25 billion in military costs tied to combat operations against Iran. The conflict has cost American taxpayers at least $25 billion—equivalent to NASA's annual budget—with the bulk of that money going toward purchasing and deploying munitions. Meanwhile, Acting Pentagon Financial Comptroller Jules Hurst testified before the House Armed Services Committee to discuss these expenditures.
Global Arms Spending
Worldwide military spending has risen for eleven consecutive years, hitting a new record high of $2.89 trillion in 2025. Last year, global defense outlays increased by 2.9%. The share of military spending in global GDP reached 2.5% in 2025, the highest level since 2009. Together, the United States, China, and Russia accounted for $1.48 trillion in military expenditures—51% of the world total.
Experts say it is only a matter of time before the U.S. surpasses its all-time historical peak of 106%, recorded just after World War II. According to Maya MacGuineas,
“this time, the borrowing is not driven by a massive global conflict but by both parties’ complete refusal to make tough decisions.”A report from the Stockholm International Peace Research Institute notes that the combination of rising national debt and military spending is raising alarm among analysts and economists.
The situation surrounding U.S. national debt and escalating defense costs reflects broader economic and political trends in the country. When debt exceeds GDP, it can have serious implications for financial stability and economic growth. As military expenditures continue to climb, it is crucial for the government to strike a balance between national security and economic expansion to avoid worsening fiscal challenges.
As the U.S. grapples with its soaring national debt, the financial implications of ongoing military engagements cannot be overlooked. Recent reports indicate that the costs of the conflict with Iran have escalated significantly, with total expenses now reaching $65 billion. Understanding these expenditures is crucial, as they contribute to the broader context of national debt and economic stability. For a deeper insight into the financial burden of military operations, explore the details in this report on U.S. military costs.