Rate Watch/Archive/2026-03-27
bearishFriday, March 27, 2026

Iran war drives mortgage rates to six-month high

10yr Treasury: 4.46%(+0.04)By David Burson

Rates moved higher for the fourth consecutive week, pushed up by the ongoing US-Iran conflict and its ripple effects on oil prices and inflation expectations. The 10-year Treasury reached 4.46% today, up from 4.42% yesterday. Freddie Mac's weekly survey put the 30-year fixed rate at 6.38% as of March 26 — a six-month high — up from 6.22% the week prior.

The connection between a war in the Middle East and your mortgage rate isn't always obvious, but the math is direct. Oil prices have climbed more than 30% since the conflict started in late February, with crude sitting near $105 a barrel. Higher energy costs feed into broader inflation expectations — if oil costs more, so does everything it touches. Bond investors demand a higher yield to compensate for that inflation risk, and as Treasury yields rise, mortgage rates follow. What looked like a promising spring buying season has turned into four straight weeks of rate increases.

For borrowers shopping right now, the 30-year conventional is running around 6.36%–6.38%, with 15-year rates near 5.73%. The week-over-week move of roughly 16 basis points on a $400,000 loan translates to about $44 more per month and roughly $15,800 in additional interest over 30 years — the breakeven math worth knowing when evaluating your timing. Rates are trending higher as long as the oil-driven inflation signal persists. You can see where today's numbers land for your specific scenario at netrate.mortgage.

The Federal Reserve held the funds rate steady at 3.50%–3.75% at the March 17-18 FOMC meeting. The next meeting is April 28-29. What's notable is the shift in market expectations: earlier this year, traders were pricing in two rate cuts. Today, markets see roughly a 50% chance of a rate increase by December — a dramatic reversal driven entirely by energy-related inflation fears. How the conflict in the Middle East evolves over the next few weeks will largely determine whether mortgage rates stabilize here or continue climbing into spring.

— David Burson, NetRate Mortgage

Market commentary is for informational purposes only and does not constitute financial advice. Rates shown are par rates from lender pricing sheets and are subject to change. NMLS #1111861.
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