Uncle Sam's Interest Bill Just Hit $529B—And the Moon Math Is Getting Expensive

America's debt situation just got a lot more expensive. While total US national debt has surpassed $39 trillion, the real headache isn't the headline number—it's the cost of servicing it. Spoiler: servicing $39 trillion in debt is basically like paying rent on a house you already bought, except the landlord keeps raising rates and you've stopped asking why.

According to preliminary estimates, the US government paid $529 billion in interest between October 2025 and March 2026. That's roughly $88 billion per month, or more than $22 billion per week. For context, that's comparable to combined federal spending on the Department of Defense ($461 billion) and the Department of Education ($70 billion) over the same period. Defense spending got outmaneuvered by interest payments. Think about that.

The pressure is accelerating. Over the same six-month period a year earlier, interest payments stood at $497 billion—a $33 billion, or 7%, year-over-year jump. The CBO noted this was driven by a larger debt stockpile and higher long-term interest rates, though some relief came from declines in short-term rates. So the relief was basically "at least we're not bleeding quite as fast as last month."

The structural picture is also getting interesting. Data highlighted by The Kobeissi Letter shows the US government spent 18 cents of every dollar of revenue on interest in Fiscal Year 2025—the highest level since the 1990s. That share has tripled since 2015. Triple. Not a typo. If your personal finances did this, your banker would immediately assume you'd joined a cult.

Looking ahead, the CBO projects this burden will reach 25 cents of every dollar of revenue by 2035. Notably, these projections assume stable economic conditions with no major recession or sharp rise in Treasury yields, leaving room for even greater strain if things go sideways. Ah yes, the "everything goes perfectly" scenario—the macroeconomic equivalent of saying "if my bets all moon, I'll be up 100x."

What This Means for Crypto

The structural deterioration in US public finances strengthens the case for hard assets with limited supply—gold and Bitcoin (BTC) included. Bitcoin showed relative resilience during the ongoing US-Iran conflict, while gold dipped amid escalating tensions. Whether Bitcoin ultimately proves to be a reliable inflation hedge or behaves more like a high-beta risk asset remains a live debate. The eternal question: is BTC digital gold or just Nasdaq with better branding?

What's less contested