There is a number buried inside China's public finances that has been rising faster than almost anything else in the budget, and it has nothing to do with new spending. It is the cost of simply keeping up with the interest on debt already taken out. This year, debt-servicing payments are set to eat up roughly 19 percent of the central government's budget, more than one and a half times the share they consumed just over a decade ago.
A line item that outgrew everything else
Back in 2014, interest payments took up about 12 percent of the central budget. Since then that figure has climbed steadily, and by one widely cited estimate the actual dollar cost of servicing China's debt jumped more than 340 percent between 2013 and 2025, a faster pace of growth than any other category in the budget over that stretch. No ministry's spending, no subsidy program, no infrastructure push grew as quickly as the cost of paying interest on what the country already owed.
The debt pile behind the bill
The interest bill is a symptom of a much bigger pile of debt. China's general government gross debt is projected to reach 107 percent of GDP this year, and forecasts put that figure at roughly 124 percent by the end of the decade. Zoom out to include corporate and household borrowing alongside the government's own, and the picture gets starker still: total non-financial debt has pushed past 300 percent of GDP, roughly double where it stood in 2010.
Businesses have been doing much of the borrowing. Corporate debt has roughly doubled since 2019, while the revenue those companies generate to pay it back has grown only about 30 percent over the same period, a gap that leaves many firms servicing loans with cash flow that simply has not kept pace.
Worse than Washington, better than Tokyo
Measured against its peers, China's debt-servicing burden now sits in an uncomfortable middle ground. Its roughly 19 percent share of the budget is well above the 14 percent the United States currently spends servicing its federal debt, even though Washington's own interest costs have drawn plenty of alarm in recent years. It remains below Japan's 25.6 percent, a reminder that Tokyo has lived with an even heavier debt load for far longer. On the broader measure of total public and private debt relative to the size of the economy, the United States stands at about 265 percent of GDP, meaningfully lower than China's more than 300 percent.
Where the money actually went
Economists who track the lending point to the same underlying cause: years of state-directed credit funneled toward industries Beijing designated as priorities, from manufacturing to infrastructure to strategic technology. That lending built capacity quickly, but a growing share of it has produced shrinking returns, leaving banks holding loans to firms that cannot easily generate the profit needed to pay them off.
Mark Williams, chief Asia economist at Capital Economics, has described the pattern bluntly: the product of a credit boom like this one is a banking system propping up unproductive firms, widespread losses across industry, and entrenched overcapacity.
That overcapacity is precisely what shows up later as a rising interest bill. Debt taken on to build factories and infrastructure does not disappear when the resulting output fails to sell at a profit, it simply has to be serviced out of whatever revenue, state support or fresh borrowing can be found, and each year that keeps the servicing cost edging further up the list of the budget's biggest line items.
None of this points to an imminent crisis. China still has levers few other heavily indebted economies can pull, including a state-controlled banking system and the ability to direct where credit flows next. But the trajectory is hard to miss. A debt-servicing bill that has grown faster than every other part of the budget for more than a decade, with forecasters still projecting the overall debt load to keep rising past 2030, is not a line item Beijing can quietly outgrow. It is one it will have to actively manage.
