Hot US Inflation Singes Asia As Higher-For-Longer Fed Rates Loom

“We now have an economy that is standing on one leg, the AI leg,” IMF Managing Director Kristalina Georgieva said in Bangkok.“What if it wobbles? What if there is disappointment and that leads to potentially a more difficult environment?”

The problem, the IMF argues, is“complacency” in safeguarding economies against a potential plunge in AI investment and stock valuations.“If there are questions about the monetization of AI, the equity investments will deplete in value, the debt may be difficult to service, and the revenue commitments in the future may not materialize,” said Jason Wu, a global markets analyst at the IMF.

In the first half of 2026 alone, global debt grew by more than $10 trillion to surpass $365 trillion, according to the Institute of International Finance. The problem is that these“high deficits” are now the“new normal,” said IIF economist Emre Tiftik.

Runaway deficit spending“has persisted despite relatively healthy labor market conditions,” Tiftik said.“Historically, fiscal deficits served as countercyclical tools, deployed during downturns to support activity. Today, large deficits have become entrenched across the economic cycle, signaling a structural shift in fiscal behavior.”

Tiftik added that“this convergence underscores the need for stronger debt management frameworks, in both mature and emerging markets. Average government borrowing costs across the G7 are now at their highest since mid-2008, while annual interest expenses are nearly 85% higher.”

Over the past year, Tiftik explained, advanced economies paid over $3.3 trillion in interest on internationally traded government bonds alone -more than estimated global spending on AI ($2.6 trillion), defense ($3.1 trillion), or clean energy ($2.3 trillion).

Not everyone thinks the IMF is right about debt worries. Gabriel Sterne, head of emerging market research at Oxford Economics, noted that“the median economy can stabilize debt by running a primary surplus of 0.1% of GDP, similar to 15 years ago.”

Sterne said that rather than fiscal-related tail risks, he thinks the grinding nature of relentless fiscal adjustment for a significant number of economies is the biggest issue. One quarter of nations have to run primary surpluses forever to stabilize debt. For corporates and consumers, that justifies long-term concerns about high tax burdens and weak public infrastructure.

The bottom line,“funding is available but expensive, further compressing room for fiscal maneuver,” Sterne added.“It's a clear warning for Italy, Japan, South Africa, Mexico, and Colombia, which are in the long fiscal-grind category,” with debt-stabilizing primary balances above 1%.“Turkey, Spain, the UK, Belgium, France, Peru, and Canada also need to run primary surpluses indefinitely.”

The Fed's tightening cycle is a complicating factor – and a fast-growing one. Last month, the Fed hiked rates for the first time since 2023. The quarter-point move pushed the Fed's benchmark to between 3.75% and ‌4%. Policymakers are widely expected to move again by year-end, perhaps as soon as October 28. September's worse-than-expected inflation data increase the odds.

In New York on Thursday, Fed Bank of Cleveland President Beth Hammack said more aggressive moves could be necessary as inflation expectations worsen. Hammack said:“What I worry about is, if you get this inflationary mindset, if you get these expectations that these price pressures become more and more persistent, it makes it much harder for monetary policy to do the work that we need to do, and we might need to move even more than if you don't have an inflationary mindset set in.” She added that“I'm not feeling that there's restraint coming from financial conditions at this point in time.”

On Friday, Warsh spoke at IMF-World Bank annual meetings in Bangkok, where he said he doesn't“prejudge” interest-rate decisions, offering no preview of whether the US central bank will hike rates later this month. Warsh said:“We made very clear that we would deliver price stability.”

Yet the risk of Fed rates – and US yields – remaining higher for longer is a real one. That, along with investors growing skittish about AI, could pull the rug out from under the stock market.“AI-led equity weakness could further cap dollar upside by challenging the capital flows into US assets and wealth effects supporting resilient US growth,” said OCBC Group Research strategist Sim Moh Siong.

Trump's chaotic war in Iran also has bond markets in a whirl as oil prices spike. While oil flows out of the Middle East are increasing,“it's unclear if the increase is sustainable,” said Madison Cartwright, economist at Commonwealth Bank of Australia.“As long as the war is unresolved, risks of future disruption will persist.”

One thing is clear: Warsh's arrival at Fed headquarters in May isn't playing out the way Asia hoped. Since replacing Powell, Warsh has run notably more hawkish than Trump expected. He could still be looking for an opportunity to do Trump's bidding and secure rate cuts. But with US inflation running close to 4% and the labor market holding up far better than expected, Warsh faces a complicated inheritance.

It's a remarkable about-face - and it's reshuffling Asia's calculus at bewildering speed. Currencies across the region are on the brink, from the yen to the rupee to the rupiah, with the Philippine peso and Thai baht joining the rout.