--- title: "The 10-Year Is Over 5% and Everyone Is Explaining Why It’s Fine" description: "America’s interest bill is past a trillion dollars; the debt-spiral debate comes down to one comparison" author: "Nate Ledger" published: 2026-10-05T02:11:11Z modified: 2026-10-05T10:18:57Z url: https://rews.cc/a/the-10-year-is-over-5-and-everyone-is-explaining-why-it-s-fi-f53d79 language: en tags: ["debt", "economy", "inflation", "bonds", "fed", "us", "finance"] publisher: "Rews (https://rews.cc)" --- # The 10-Year Is Over 5% and Everyone Is Explaining Why It’s Fine *America’s interest bill is past a trillion dollars; the debt-spiral debate comes down to one comparison* By Nate Ledger · October 5, 2026 · https://rews.cc/a/the-10-year-is-over-5-and-everyone-is-explaining-why-it-s-fi-f53d79 ## In brief - The 10-year Treasury yield is firmly above 5%, a multi-decade high for U.S. borrowing costs - Net interest costs were an estimated $1.05 trillion in the first 11 months of fiscal 2026 - TD Securities projects interest expenses reaching $1.6 trillion by fiscal 2029 if yields hold near current levels - The average U.S. debt rate of ~3.4% remains below 8.5% annualized nominal Q2 GDP growth, keeping the burden manageable - BMO’s Ian Lyngen attributes the yield rise largely to real growth expectations, not fiscal panic There is a famous bit of market psychology in which the scariest number is whichever round number just got crossed, and right now that number is 5% on the 10-year Treasury. U.S. government borrowing costs are at their highest in decades, and the government’s net interest costs came to an estimated $1.05 trillion in the first 11 months of fiscal 2026, according to CNBC. A trillion dollars a year, roughly, just to service the debt. So: fiscal crisis? The honest answer from the bond market this week is “not yet,” which is the kind of sentence that is reassuring right up until it isn’t. Start with the people who are worried, because the mechanism they describe is genuinely simple. Maya MacGuineas, president of the Committee for a Responsible Federal Budget, laid it out when the 10-year crossed 5% last month: > The real threat is the debt spiral. If interest begets debt, and debt begets interest, eventually debt will spin out of control. A fiscal crisis, once unthinkable, is now a distinct possibility. The loop works like this: investors look at a heavily indebted government and demand higher yields to lend to it; higher yields raise the interest bill; the government borrows more to pay the interest; investors look at the bigger pile and demand still higher yields. Each turn of the crank makes the next turn easier. It’s a compelling story. The only question is how far along the spiral the U.S. actually is, and on that the professionals are, for now, calm. “A fiscal apocalypse is not upon us just yet,” TD Securities strategists Gennadiy Goldberg and Molly Brooks wrote in a recent note, which is a glorious piece of strategist hedging — the “just yet” doing a lot of unpaid work in that sentence. TD estimates interest expenses of about $1.1 trillion in fiscal 2026, rising to $1.4 trillion in fiscal 2027, $1.5 trillion in 2028 and $1.6 trillion in 2029 if yields stay near current levels. Those are big, rising numbers. Why aren’t they a crisis today? Two reasons, mostly. First, the government doesn’t have to refinance everything at once. The weighted-average maturity of U.S. debt is about 5.9 years, so today’s 5%-plus rates only bite as old bonds mature and get rolled over. The average coupon on Treasury securities excluding bills is still just 3.1%, per TD. Imagine you have a fixed-rate mortgage at 3% and your bank raises rates to 6%: bad for the housing market, but your own payment doesn’t move until you move. Second — and this is the comparison that matters — the average interest rate on the debt, about 3.4%, is comfortably below how fast the economy is growing in nominal terms. Nominal GDP grew at an 8.5% annualized rate in the second quarter, per the latest Bureau of Economic Analysis estimate. When your economy grows faster in dollar terms than the rate on your debt, the debt shrinks relative to the economy almost by itself, even with big deficits. The debt spiral really gets going when that relationship flips. Federal debt held by the public is projected at around 101% of GDP in fiscal 2026, according to the Congressional Budget Office — high, but as Matthew Reese of L&G Asset Management pointed out to CNBC, Japan has run much higher debt with very low nominal growth for decades without a fiscal crisis. Reese called fears of imminent crisis “exaggerated,” citing the dollar’s “exorbitant privilege” and the U.S. Treasury market’s unmatched liquidity. “We are some way away from a fiscal crisis,” he said. ## Maybe it’s not even about the debt Here is the part that complicates the scary story: the rise in yields may not be mostly about fiscal fears at all. TD lists stronger economic growth, expectations of Federal Reserve rate hikes, higher oil prices, heavy corporate bond issuance and repositioning by fast-money investors alongside the debt concerns. Ian Lyngen, head of U.S. rates strategy at BMO Capital Markets, says the move in longer-term yields has “largely been a real rates story” — investors pricing stronger actual and expected growth, and sharing the Fed’s inflation angst. “All else being equal, investors are content with the underlying performance of the real economy,” he wrote. A rise in yields because the economy is hot is a very different animal from a rise in yields because lenders are getting nervous. In BMO’s client survey, just 1% of respondents said the labor market would be the first place to show clear stress from rising real rates; housing topped the list at 42%, followed by stocks at 26% and corporate credit at 21%. That is a market expecting the pain to arrive in the usual order — houses first — rather than a market running for the exits. The honest summary, then, is that the alarm and the calm are both rational, because they’re answers to different questions. Is there a fiscal crisis at 101% debt-to-GDP with a 3.4% average interest rate and 8.5% nominal growth? No, and the arithmetic says so. Is there a path — keep deficits wide, let growth cool, roll the debt over at 5%-plus until the average rate crawls up toward the growth rate — where the spiral MacGuineas describes starts turning? Obviously yes, and TD’s own projections put the interest bill at $1.6 trillion by 2029 to prove the direction of travel. Lyngen’s closing line may be the most useful thing anyone said: the “only durable constraint on even higher bond yields would be indisputable evidence that either the economy or risk assets are buckling under the pressure of elevated borrowing costs.” Which is to say, yields stop rising when something breaks. Reassuring, in its way.