The average rate on the standard 30-year fixed mortgage in the United States rose to 6.46% in the latest week, reaching its highest level since early September as the war involving Iran continued to shake global energy markets and lift inflation fears. The increase reflects the close connection between mortgage rates and U.S. Treasury yields, which have jumped since the Middle East crisis began on February 28. Because Treasury yields influence borrowing costs across the economy, the rise is now feeding directly into the housing market at a time when many buyers would normally be entering the spring home-shopping season.
The current mortgage rate is nearly half a percentage point higher than it was just before the war began. That may sound modest, but for homebuyers it can make a meaningful difference in monthly payments and overall affordability. Higher mortgage rates increase the cost of financing a home purchase, which can push some buyers out of the market altogether or force them to lower their price range. In practical terms, the move to 6.46% adds fresh pressure to a housing market that was already struggling with elevated prices and limited affordability.
The core driver is the broader economic impact of the conflict. The war has effectively blocked shipments of about one-fifth of the world’s oil supply and a large share of global fertilizer shipments through the Strait of Hormuz, one of the most important trade chokepoints in the world. That disruption has fueled concern that energy and food prices could rise further and feed into wider inflation. Oil prices climbed to around $110 a barrel after President Donald Trump said U.S. strikes would continue for another couple of weeks and suggested that other nations should handle securing ship passage through Hormuz. As markets priced in the risk of higher inflation and tighter monetary policy, Treasury yields rose, and mortgage rates followed.
That timing is especially difficult for the housing market because spring is usually the busiest season for buying and selling homes in the United States. A rise in borrowing costs during this period can cool activity just when the market typically begins to accelerate. Higher mortgage rates reduce affordability precisely as buyers and sellers would normally be hoping for stronger momentum. This means the latest increase is not just a technical financial shift. It could affect home sales volume, buyer confidence, and the broader mood of the real estate market over the next several weeks.
The rate increase is also notable because it reverses some recent progress. Trump administration had tried to ease affordability pressures by encouraging Freddie Mac and Fannie Mae to buy mortgage-backed securities, a step that had helped push the 30-year mortgage rate down to 5.98% last month. That decline had offered some relief to borrowers after a long period of high financing costs. But the new geopolitical shock appears to have wiped out much of that gain in a short time, showing how vulnerable housing finance remains to events far beyond the domestic real estate sector.
What began as a geopolitical and military crisis in the Middle East is now influencing home affordability in the United States by lifting oil prices, inflation expectations, and long-term borrowing costs. Mortgage rates do not move only because of housing supply or Federal Reserve policy; they also respond to global shocks that reshape investor expectations. In this case, the rise to 6.46% is one more sign that the Iran war is reaching into the U.S. economy in ways consumers can feel directly.
Overall, the latest jump in mortgage rates adds another obstacle for prospective buyers at a sensitive moment. The housing market had been looking for relief, but instead it has been hit by a fresh wave of uncertainty tied to war, inflation, and financial-market volatility. If those pressures persist, the cost of buying a home could remain elevated even as the busiest part of the real estate calendar unfolds.
