CBO: US paying $3B daily

The story here is federal interest expense — the money the U.S. pays just to carry debt it already has. That cost has gotten big enough that “about $3 billion a day” is no longer a scare line. It is a rough description of the current scale. What changed this week is that CBO’s latest monthly budget review put fresh numbers on it, showing net interest outlays up sharply in fiscal 2026. ### Where does the $3 billion a day figure come from? CBO said net interest outlays in the first seven months of fiscal 2026 were about $634 billion, up $41 billion from the same period in fiscal 2025. Divide $634 billion by roughly 212 days from October through April and you get just under $3 billion per day. That is not a single daily bill Treasury pays every morning — it is an average pace implied by year-to-date spending. (cbo.gov) ### What exactly is “net interest”? Net interest is what the federal government pays on its debt, minus some interest income it receives. Think of it as the carrying cost on a giant national balance sheet. It does not buy a new bridge, add soldiers, or expand Medicare benefits. It is the price of past borrowing. That is why budget people worry about it — once it rises, it crowds out room for everything else. (cbo.gov) ### Why is it rising now? Two things are doing most of the work. First, there is simply more debt to finance. Treasury’s daily debt data showed total public debt outstanding at about $38.94 trillion on May 8, 2026. Second, CBO said higher long-term interest rates also pushed costs up. More debt times higher rates is the whole story in one line. ### Is all $39 trillion the same thing? Not really — and this part matters. (cbo.gov) Treasury splits the total into debt held by the public and intragovernmental holdings. On May 8, debt held by the public was about $31.26 trillion, while roughly $7.68 trillion sat in government accounts like Social Security trust funds. Markets focus more on debt held by the public because that is the portion Treasury finances directly with investors. ### Why do higher rates hit so hard? Because the government is constantly refinancing old debt and issuing new debt. It is less like a 30-year fixed mortgage and more like a giant ladder of bills, notes, and bonds that keeps rolling over. When rates stay elevated, new borrowing gets priced at those higher levels, and older low-rate debt gradually gets replaced. The pain shows up with a lag, but it keeps showing up. (fiscaldata.treasury.gov) ### Does this mean the U.S. is about to run out of money? No. The U.S. still borrows in its own currency and Treasury securities remain the core safe asset in global markets. But the catch is fiscal flexibility. CBO’s February outlook projected more than $1.0 trillion in net interest outlays for fiscal 2026 and a $1.9 trillion deficit, with debt held by the public at 101 percent of GDP this year and rising further over the next decade. (fiscaldata.treasury.gov) ### Why are markets watching this so closely? Because interest expense feeds back into everything else. Bigger deficits mean more borrowing. More borrowing can keep pressure on yields. Higher yields then raise future interest costs again. It is a loop — not an immediate crisis, but a compounding one. That is why a number like $3 billion a day lands. It makes an abstract debt problem feel cash-real. ### Bottom line (cbo.gov) The new CBO update did not reveal a hidden blowup. It showed that the math everyone worried about is still working exactly as expected — and that is the problem. The debt is bigger, rates are higher, and interest is becoming one of the federal budget’s most stubborn line items. (cbo.gov)