Mortgage rates rose today as bonds sold off amid Iran escalations in the Strait of Hormuz, fueling oil and inflation fears despite CPI data matching expectations. Existing Home Sales beat forecasts but had little impact. Get float/lock guidance for this volatile market on March 12, 2026. (158 characters)
Tammy Metzger, M.Ed., RMLO, Broker | Owner
Mortgage Dogs LLC
Phone: (512) 426-8181
Email: [email protected]
NMLS# 1685285
Company NMLS# 2179191
Licensed in: TX, NM, AZ, CO, MI
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Mortgage Rates Climb on Iran Tensions Despite Tame CPI
March 12, 2026
Mortgage markets opened lower this Thursday, March 12, 2026, as fresh tensions in the Strait of Hormuz overshadowed otherwise tame inflation data. Geopolitical risks are driving oil prices higher and stoking inflation concerns, leading to a notable uptick in rates. Homebuyers should stay informed amid this uncertainty.
Bonds sold off sharply today despite CPI figures aligning with expectations, featuring a 0.3% monthly headline increase and 0.2% core rise. Escalating Iran conflicts have dominated sentiment, pushing mortgage rates higher by a quarter to nearly half a point. MBS prices dipped by 6 basis points, reflecting the broader risk-off tone. Yesterday's rally faded early, with markets yielding back gains from falling oil and de-escalation hopes.
Existing Home Sales recently exceeded expectations, signaling resilient buyer demand despite elevated rates. However, this positive data had minimal market impact as bonds continued their sell-off. Affordability remains challenged with rates trending upward, compressing purchasing power for many households. Housing inventory trends are unavailable, but the sales beat underscores ongoing market dynamics.
For buyers, today's rate climb emphasizes the need for caution in a volatile environment dominated by geopolitics. Sellers may benefit from strong sales momentum but face affordability headwinds for potential buyers. Float/lock guidance recommends locking loans within 7, 15, or 30 days, while considering a float for 30+ day timelines. Monitoring these risks is crucial for timely decisions.
Geopolitical tensions continue to overshadow economic data, keeping mortgage rates elevated on March 12, 2026. While CPI provided no surprises, Iran escalations drove the market lower. Staying proactive with professional guidance can help navigate this landscape.