Markets
Will the Iran Oil Shock Raise Mortgage Rates?
Oil nearly hit $120 a barrel this spring. Here is how a war on the other side of the world ends up in your monthly payment, and what just changed.
By David Golovin · June 22, 2026 · 4 min read
The short answer
The oil spike pushed inflation back up, and that keeps the Fed from cutting and keeps mortgage rates high. A new US-Iran deal is starting to ease things, but rates do not drop overnight.
What happened
In late February, US and Israeli strikes on Iran shut down the Strait of Hormuz. That is the narrow stretch of water that about 20% of the world’s oil passes through. When that much supply gets stuck at once, the price of oil jumps. And it jumped fast.
Oil price per barrel, 2026
Brent crude. It jumped after the strikes in late February, peaked in April, and started easing after the June deal.
Source: S&P Global, June 15, 2026
How oil ends up in your mortgage
Oil does not just hit the gas pump. It works its way into housing through a few different doors.
Building a home gets pricier. Concrete, roofing, insulation, and pipes are all made with energy and petroleum, so when oil goes up, so does the cost of almost everything that goes into a house. Getting those materials to the job site costs more too, because lumber and appliances travel by truck and fuel is part of that bill.
The bigger one is harder to see. When energy gets expensive, it makes most other things cost more, and that is what we call inflation. When inflation runs hot, the Federal Reserve keeps interest rates high to cool it off. High rates mean a bigger monthly mortgage payment. So a barrel of oil stuck in the Persian Gulf can, a few steps later, raise the cost of buying a house in Phoenix.
Source: U.S. Bureau of Labor Statistics, Consumer Price Index
What just changed
On June 14, the US and Iran announced a deal to end the conflict and reopen the Strait of Hormuz. Oil has already fallen back toward $83 a barrel, which is the good news. The catch is that untangling months of disruption takes time, and analysts expect supply to stay tight through the summer. Mortgage rates tend to follow inflation down slowly, not all at once, so do not expect a sudden drop just because the headlines calmed down.
How some buyers get a low rate now
When a seller already has a 2% to 4% loan, an assumable mortgage lets the buyer take it over: same rate, same balance. When an oil shock keeps rates high, that locked-in rate gets more valuable, not less. All FHA and VA loans qualify, and Roots shows thousands of these homes.