The short answer
Before refinancing for a lower payment, check four things: the upfront cost of the new loan, how long your current loan has left, the payoff date of the new one, and what you would still owe on each loan at the point you expect to sell or refinance again. A simple break-even estimate is a useful start, not the full answer.
Start with a simple break-even
Suppose a new loan would cost $4,800 paid out of pocket in net transaction costs—lender and third-party charges, after any lender credit—and would lower the monthly principal-and-interest payment by $200.
If you keep the new loan longer than about two years, the monthly reduction would have recovered the upfront cost in cash-flow terms. Hypothetical figures for illustration only, not a quote or an expected result.
What that number leaves out
- Time value. Cash spent at closing is gone today; the savings arrive gradually. That money could also have gone to reserves or other debt.
- Balance changes. Changing the rate, term, or balance changes the principal-paydown schedule. Financed costs also increase what you owe.
- Mortgage insurance. Adding, removing, or changing mortgage insurance shifts the monthly comparison.
- Taxes. How interest and points are treated depends on your situation. Ask a tax professional.
- Future plans. If you sell or refinance again before the break-even point, the cost is not recovered.
Break-even tells you when cash flow catches up. It does not prove you will pay less total interest.
Compare the payoff date, not only the payment
Say 26 years remain on your current loan and the new loan is a 30-year term. Part of the lower payment then comes from spreading the balance over four more years. That can be a reasonable choice for monthly flexibility, but it should be a deliberate one.
A clearer test is to compare the remaining balance and total payments at the point you expect to sell or refinance. For two fixed-rate, fully amortizing loans, the loan comparison calculator shows annual principal-and-interest schedules and year-end balances. It accepts whole-year terms. Ask Fred for a month-specific comparison if your timeline falls between those year-end points, and compare mortgage insurance and other excluded costs separately.
Escrow deposits and prepaids are cash, not always cost
A Loan Estimate also lists prepaid interest, insurance premiums, and an initial escrow deposit for taxes and insurance. You need that cash at closing, but much of it pays for expenses you would owe anyway, and an existing escrow balance on the loan being paid off may be refunded separately afterward.
Plan for those items in cash to close. Think carefully before adding them to the break-even cost as if they were lender fees. Likewise, a month without a mortgage payment after closing is a timing effect, not savings.
Prepare before you request quotes
- A recent mortgage statement: balance, rate, remaining term, and any mortgage insurance.
- A realistic estimate of how long you will keep the home and the loan.
- The goal: a lower payment, an earlier payoff, removing mortgage insurance, or cash out.
- Quotes on the same loan amount, term, and lock period from each lender.
- Costs sorted into lender charges, third-party charges, prepaids and escrow, and credits.
- Both loans run to your expected holding period, not only to the break-even month.
For the broader framework, see refinance strategy.
Sources and notes
- Consumer Financial Protection Bureau: Key terms: mortgages
- Consumer Financial Protection Bureau: Compare Loan Estimates
General education only. Product terms, eligibility, pricing, and costs vary by lender and borrower and must be confirmed for a specific transaction. Examples are hypothetical.