The Mortgage Lock-In Effect: Why Homeowners With Low Rates Won't Sell

The mortgage lock-in effect describes the economic paralysis that occurs when homeowners hold fixed-rate mortgages at rates significantly below current market rates. Selling their home means giving up a cheap mortgage and financing the next home at a much higher rate — making the effective cost of moving prohibitively high even when life circumstances would normally prompt a sale. ## The 2022-2026 Lock-In During 2020-2021, mortgage rates dropped to historic lows (2.65-3.5%) driven by near-zero Federal Reserve policy rates and the 10-year Treasury yield sitting around 1%. Millions of homeowners refinanced or purchased at these rates. By late 2022, the Fed's aggressive rate increases pushed mortgage rates above 7%, and they remained in the 6.5-8% range through 2024. The result: homeowners locked in at 2-3% faced an enormous cost to move. For every percentage point that market rates exceed the homeowner's existing rate, the probability of sale decreases by approximately 18%, according to FHFA (Federal Housing Finance Agency) research. ## Scale of Impact FHFA estimates that between mid-2022 and end of 2023, mortgage lock-in prevented approximately 1.33 million home sales — a 57% reduction in sales of homes with fixed-rate mortgages in Q4 2023. A Bankrate survey found that 41% of homeowners paying less than 3% say they would not consider buying again at any rate. ## Effect on Prices By constraining supply (fewer homes listed for sale) while demand remained present (driven by demographics and household formation), the lock-in effect boosted home prices approximately 5-6% above where they would have been without the effect. Prices stayed elevated despite reduced transaction volume — the opposite of a normal market where fewer sales typically accompany lower prices. ## The Paradox The lock-in effect creates a self-reinforcing cycle: low supply keeps prices high, which makes buying even more expensive, which makes the calculus of selling even worse for locked-in homeowners. The only resolution is either rates falling back toward homeowners' existing rates (reducing the cost of moving) or enough time passing that life events (divorce, job relocation, growing families) force sales regardless of the rate differential. How the Bond Market Controls Mortgages, Stocks, and Jobs The Equity Risk Premium: Why Stocks Must Outperform Bonds to Attract Capital