How the Iran War Is Quietly Crushing Americans’ Credit Access

The US-Iran war has not lowered a single FICO score. Yet borrowers across America are being denied mortgages and auto loans they would have secured months ago.

Lenders are quietly raising internal cutoffs and adding underwriting overlays. The shift reflects oil-driven inflation and Federal Reserve uncertainty, not any change in consumer credit data.

Why lenders are Pulling Back

The conflict has disrupted the Strait of Hormuz, the chokepoint for roughly 20% of global oil supply. Brent crude spiked above $120 a barrel at recent peaks.

Higher energy costs pushed US inflation to 3.2% in March 2026, well above the Fed’s target. The 10-year Treasury yield jumped to 4.48%. Fixed 30-year mortgage rates have climbed for five consecutive weeks since the war began.

That repricing has filtered through to underwriting desks. Banks now treat geopolitical risk as a reason to demand more documentation and raise minimum scores.

Files that previously cleared without friction are getting second looks.

Who Gets Hit Hardest

The squeeze is concentrated in the 640 to 720 FICO range, where most first-time buyers and middle-income borrowers sit. Auto loans and mortgages have absorbed the brunt of the pullback.

“Nobody’s credit score dropped because of Iran. But try getting approved for a mortgage right now with a 670 FICO and see what happens,” Alexander Katsman, founder of Credit Booster AI, told CNBC that the shift is invisible by design.

He added that lenders rarely announce these moves. They simply happen.

Markets now price in zero Federal Reserve rate cuts for 2026. Chair Jerome Powell has flagged that oil pressure will persist near term. Until the Strait stalemate eases, the bar for borrowing is likely to keep rising quietly.