Higher Rates Stoke a Growing Chorus of Deficit Concerns

The U.S. government’s persistent budget deficit and growing debts were low on Wall Street’s list of worries when interest rates were at rock bottom for years. But borrowing costs have risen so sharply that it is causing many investors and economists to fret that the United States’ big debt pile could prove less sustainable.

Federal Reserve officials have raised interest rates to about 5.3 percent since early 2022 in a bid to control inflation. Officials predicted at their meeting last month that interest rates could remain high for years to come, shaking expectations among investors who had bet on rates falling notably as soon as next year.

The realization that the Fed could keep borrowing costs high for a long time has combined with a cocktail of other factors to send long-term interest rates soaring in financial markets. The rate on 10-year Treasury bonds has been climbing since July, and reached a nearly two-decade high this week. That matters because the 10-year Treasury is like the market’s backbone: It helps drive many other borrowing costs, from mortgages to corporate debt.

The exact cause of the latest run-up in Treasury rates is hard to pinpoint. Many economists say a combination of drivers is probably helping to drive the pop — including strong growth, fewer foreign buyers of America’s debt, and concerns about debt sustainability in and of itself.

What’s clear is that if rates remain elevated, the federal government will need to pay investors more interest in order to fund its borrowing. America’s gross national debt stands just above $33 trillion, more than the total annual output of the American economy. The debt is projected to keep growing both in dollar figures and as a share of the economy.

While the climbing cost of holding so much debt is stoking conversations among economists and investors about the appropriate size of the government’s annual borrowing, there is no consensus in Washington for deficit reduction in the form of either higher taxes or big spending cuts.