Do mortgage interest rates move when the Fed changes policy?

The Fed does not set mortgage interest rates, but its policy and guidance influence bond yields that lenders follow. Markets react to the statement, projections, and press conference. A hawkish tone can lift yields and rates. A dovish tone can ease both. Moves often happen within minutes.

Should I lock my 30-year mortgage rate before the Fed rate decision?

If you are within 30 to 45 days of closing, a lock can reduce risk. Ask your lender about a float-down in case rates fall. If your timeline is longer, price both locking and floating scenarios and compare monthly payments, points, and APRs on the same day.

Why are refinance rates often higher than purchase rates?

Refinance rates can be higher due to loan-level pricing adjustments, perceived prepayment risks, and investor demand for those loans. Lenders also manage capacity and may price refis differently from purchases. Always compare at least three quotes on the same day and review loan estimates side by side.

What could push 30-year mortgage rates lower after the Fed?

Softer inflation data, signs of slower growth, or a more dovish outlook from the Fed can pull Treasury yields down, which often lowers mortgage pricing. Tight MBS spreads, steady liquidity, and calmer geopolitical news can also help. Weekly lender repricing can compound these moves if demand weakens.

Global Market Insights

Mortgage Rates March 18: 30-Year Average 6.12% Before Fed Update

ByDanny Kontos March 19, 2026March 19, 2026

Mortgage interest rates are steady heading into March 18, with the U.S. 30-year average at 6.12% and the 15-year at 5.62% as of March 17, per Zillow. Refinance rates run higher at 6.72% for a 30-year and 5.65% for a 15-year. With the Fed rate decision and Chair Powell’s remarks due Tuesday, bond volatility could move pricing quickly. We outline what that could mean for a 30-year mortgage, refinance rates, and housing-sensitive assets.