When Does Refinancing Actually Save You Money?

The conventional wisdom is "refinance when rates drop 1%." That's a useful rule of thumb, but it's incomplete. Whether refinancing saves you money depends on three factors: how much your rate drops, how much it costs to refinance, and how long you plan to stay in the home.

The Break-Even Calculation

Every refinance has upfront costs — typically 2%–3% of the loan amount in closing costs. To determine if a refinance makes financial sense, divide your closing costs by your monthly savings. The result is your break-even point in months.

If you plan to stay in the home more than 50 months (4.2 years), this refinance saves money. If you plan to sell or move within 4 years, the upfront cost outweighs the savings.

When a Small Rate Drop Still Makes Sense

A rate drop of less than 1% can still be worth refinancing if you're removing FHA MIP, shortening your loan term, or eliminating PMI. These changes can save $200–$400/month independent of the rate change.

For example: refinancing from a 6.75% FHA loan to a 6.5% Conventional loan saves 0.25% on the rate — but eliminating MIP ($250/month) makes the total monthly savings $300+. The break-even drops dramatically.

The Rate Environment Caveat

Refinancing is not a one-time decision. If you refinance today and rates drop another 1% in 18 months, you can refinance again. The break-even calculation resets each time. This is why "wait for the perfect rate" is often the wrong strategy — refinancing at 6.5% today and again at 5.5% in two years is better than waiting for 5.5% and missing 18 months of savings.

For a full guide on refinance options, see our Refinance Guide.