IMF Chief: Growth Alone Won't Fix America's $40 Trillion Debt

By Olivia Hart

The U.S. national debt has hit $40.3 trillion — a record — and IMF chief Kristalina Georgieva says no growth miracle will pay it down. "Growth, of course, helps but it cannot deliver fast enough the necessary adjustments," she said this week at the IMF's annual meetings in Bangkok, adding that the budget deficit must also shrink.

The Treasury Department fired back within hours.

What does the Treasury say?

David Zervos, counselor to Treasury Secretary Scott Bessent, dismissed the warning by attacking the IMF's forecasting record. "When we see pieces on the IMF, it's good to remember how messy their forecasts have been in the past," Zervos said in a statement. He pointed to overly rosy IMF predictions before the 2008 global financial crisis and the 1997 Asian financial crisis.

The IMF did not immediately respond when asked for comment. The exchange marks a rare public spat between the fund and its largest shareholder's finance ministry — and it comes at a moment when the fiscal arithmetic is getting worse, not better.

How big is the debt problem?

The numbers Treasury itself publishes frame the debate. Gross federal debt stands at about 126% of GDP, the largest burden in the world. Publicly held debt is lower, at 100% of GDP, but that is still the highest level since shortly after World War II, according to the Committee for a Responsible Federal Budget.

Interest costs compound the strain. Net interest payments consumed roughly 15% of federal spending in fiscal 2026 — and about one in five dollars of government revenue. That is money unavailable for services, defense or anything else.

By fiscal 2031, the Committee for a Responsible Federal Budget projects the average interest rate on federal debt will exceed the economy's growth rate — a dynamic that can feed a self-reinforcing "debt spiral" and eventually force sharper spending cuts or tax increases.

The takeaway: the debt is not just large; it is increasingly expensive to carry.

Can the U.S. grow its way out?

Bessent has staked his position on sustained 3% annual growth, fueled partly by AI. "There's nothing magic about the $40 trillion number," he told CNBC in August. "And we can grow our way out of that."

The record argues otherwise. The U.S. has reached 3% growth in only five calendar years, most recently in 2019, during President Donald Trump's first term. GDP is estimated to grow 2.2% this year, up from 2% in 2025 — a full point below Bessent's target.

A Council on Foreign Relations analysis last month concluded that sustained 3% growth is hard to achieve. Congressional Budget Office Director Phillip Swagel went further, warning that "it's probably not plausible" growth alone will stabilize the U.S. fiscal trajectory. Real GDP growth would need to run at 5% to 6%, he noted; changes to revenue and spending are necessary.

The takeaway: the administration's growth case rests on a rate the economy has rarely delivered.

What comes next?

Bessent says he and White House budget director Russ Vought are working with Trump on a broader deficit-reduction plan. No details have been released — which means the plan, for now, exists only as an assertion.

The IMF has raised the alarm before. In its April annual review of the U.S. economy, the fund's executive directors acknowledged American economic strength but warned the debt path matters beyond U.S. borders. "They emphasized that the fiscal trajectory creates a growing financial stability tail risk for the U.S. and for the global economy, given the importance of the U.S. Treasury market for the global financial system," the report said.

Until Washington produces an actual deficit plan, the debate between Bangkok and the Treasury rests on competing promises — and interest payments keep compounding in the meantime.