Mortgage rates have settled at 6.58%, with the 10-year yield holding at 4.43% as the bond market braces for a critical week of Federal Reserve policy and new inflation figures. The spread between the two remains elevated, reflecting persistent uncertainty about the pace of rate cuts and geopolitical developments.

The Iran nuclear deal looms as a wild card. An agreement could push oil prices lower, easing inflation pressures and potentially dragging yields down—a scenario that would provide relief for homebuyers. Markets are also watching the Fed's rate decision on Wednesday, with expectations of a hold but keen attention on forward guidance.

Affordability remains strained at current levels. A borrower taking a $400,000 loan at today's 6.58% faces a monthly payment of roughly $2,540, compared to about $1,900 at the sub-3% rates seen in 2021. Every quarter-point move in rates shifts purchasing power by several thousand dollars.

Inventory levels are creeping higher in some metros, but the bid-ask spread between buyers and sellers persists. Days on market have lengthened modestly, particularly in Southern and Sun Belt markets, where price cuts are becoming more frequent. Buyer demand remains sensitive to any rate movement.

Economists at HousingWire note that the trajectory hinges on both the Fed's stance and the Iran deal's impact on energy costs. A dovish pivot could drive rates toward 6%, but any inflation surprise or geopolitical flare-up could just as easily reverse the recent gains. The market remains in a wait-and-see posture.