US Treasury Yields Cross 5% But Analysts Say No Fiscal Crisis Yet

The benchmark 10-year US Treasury yield is now firmly above 5%, its highest level in decades, and US net interest costs came in at about $1.05 trillion in the first 11 months of fiscal year 2026. That combination has revived talk of a debt spiral in Washington.

Bond market strategists say a fiscal crisis is not imminent. Higher borrowing costs are feeding into government finances gradually, and much of the recent yield surge reflects a surprisingly resilient US economy rather than pure fiscal panic.

The debt spiral fear

Maya MacGuineas, president of the Committee for a Responsible Federal Budget, warned that higher borrowing costs risk becoming self-reinforcing as mounting interest expenses force the government to borrow more.

"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," she said in a statement last month after the 10-year Treasury yield crossed 5%.

The feared chain is simple. Investors demand higher yields to lend to a heavily indebted government, the higher rates push up Washington's interest bill, the government borrows more to service its obligations, and investors demand even higher yields in response.

Why a crisis is not here yet

TD Securities strategists Gennadiy Goldberg and Molly Brooks say the US is some distance from a breaking point. "A fiscal apocalypse is not upon us just yet," they said in a recent note.

The bank estimates US interest expenses in fiscal 2026 at around $1.1 trillion. On its projections, financing costs reach $1.4 trillion in fiscal 2027, $1.5 trillion in 2028 and $1.6 trillion in 2029, if yields stay near current levels.

A key buffer is that Washington does not need to refinance its entire debt pile at today's rates at once. The weighted-average maturity of US government debt is about 5.9 years, so higher costs feed through only as existing bonds mature. The average coupon on Treasury securities excluding bills is still just 3.1%.

The average interest rate on US debt, at about 3.4%, remains below the rate at which the economy is growing in nominal terms. Nominal US GDP grew at an annualised 8.5% in the second quarter, according to the Bureau of Economic Analysis. Federal debt held by the public is projected at about 101% of GDP in fiscal 2026, per the Congressional Budget Office.

Matthew Reese, head of global bond strategies at L&G Asset Management, called fears of an imminent US fiscal crisis "exaggerated." He noted that Japan has coped with significantly higher debt levels than the US, with very low nominal growth, without suffering a fiscal crisis.

Growth is doing the work

TD pointed to stronger economic growth, expectations for Federal Reserve rate hikes, higher oil prices, corporate bond issuance and repositioning by fast-money investors alongside fiscal concerns as drivers of the yield rise.

Ian Lyngen, head of US rates strategy at BMO Capital Markets, also tied the move to economic resilience. "All else being equal, investors are content with the underlying performance of the real economy and share the Fed's inflation angst," he wrote, adding the rise in longer-term yields has "largely been a real rates story." He said the latest jobs data was likely to "confirm the resilience of labour market conditions in the face of sticky inflation and elevated borrowing costs."

In BMO's survey, only 1% of respondents said the labour market would be the first area to show clear stress from rising real rates. Housing topped the list at 42%, followed by stocks at 26% and corporate credit at 21%.

Lyngen 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."

What it means for Nigeria

Sustained US yields above 5% keep global capital tilted toward dollar assets. That usually means tighter external financing conditions for frontier issuers, including Nigeria, and pressure on the naira. The relief for Nigerian borrowers and consumers is that most analysts still see no imminent US fiscal break, so the risk is high-for-longer rates rather than a sudden crisis.