US Mortgage Rates Reach One-Year High Amid Iran Conflict and Inflation Concerns

The average 30-year fixed mortgage rate in the United States has climbed to 6.85%, marking the highest level in more than a year, according to the Mortgage Bankers Association. This increase is attributed to rising oil prices and inflation fears, which have led to a sell-off in the bond market amid escalating geopolitical tensions, particularly the US-Iran conflict that intensified in late February. The conflict has pushed oil prices toward $100 per barrel, directly impacting the cost of financing a home.

Mortgage rates are closely tied to the 10-year Treasury yield, which has risen to nearly 4.8%, a level not seen since late 2023. When investors anticipate higher inflation, they tend to sell bonds, causing yields to rise. Consequently, as yields increase, so does the cost of a 30-year mortgage. Since the onset of the US-Iran conflict, mortgage rates have surged by 73 basis points, translating to hundreds of dollars added to monthly payments for typical home purchases.

In the week ending September 4, overall mortgage applications fell by 2.7%, with refinancing applications dropping by 6.2%. Inflation has remained above the Federal Reserve's target of 2% for over five and a half years. Earlier in 2026, there were hopes that mortgage rates would stabilize as inflation appeared to be cooling, but these expectations have been dashed by the geopolitical pressures affecting energy markets.

The bond market's reaction has been significant, and with the Federal Reserve's next meeting scheduled for September 15-16, market participants are closely watching for any shifts in monetary policy. President Trump has called for rate reductions, highlighting the ongoing tension between political timelines and the realities of monetary policy.

As mortgage rates rise, the pool of qualified buyers diminishes. Homeowners who secured sub-4% rates during the pandemic have little incentive to sell and take on new mortgages at nearly 7%. This situation creates a mismatch in supply and demand, keeping home prices elevated even as transaction volumes decline.

Fewer home sales result in reduced origination fees for lenders, while declining refinancing activity impacts a critical revenue stream for many mortgage companies. The future trajectory of mortgage rates will largely depend on the developments in the Iran conflict and the upcoming inflation data. Rate cuts, which some market participants had anticipated for late 2026, may now be pushed into 2027 due to these uncertainties.