Find out how many months it takes for your monthly savings to cover your refinance closing costs.
Written & fact-checked by the CoverFormula editorial team · Last reviewed 2026-07-29
Refinancing replaces your current mortgage with a new one — usually at a lower rate, but always with new closing costs (appraisal, lender fees, title insurance, sometimes points). The break-even point is how many months of monthly payment savings it takes to recover those upfront costs. If you sell the home or refinance again before reaching break-even, you lose money on the deal.
It computes your new monthly principal & interest payment using standard mortgage amortization on your current balance at the new rate and term, subtracts it from your current payment to get the monthly savings, then divides your closing costs by that monthly savings to get the break-even month count.
New Payment = Balance × r × (1+r)^n ÷ ((1+r)^n − 1), where r = monthly rate, n = new term in months
Monthly Savings = Current Payment − New Payment
Break-Even (months) = Closing Costs ÷ Monthly SavingsMost guidance suggests refinancing is worth it if you'll stay in the home (or keep the loan) longer than the break-even period. A break-even under 2-3 years is generally considered favorable; anything beyond 5 years deserves more scrutiny, especially if you might move or refinance again before then.
This simple break-even method compares monthly payment savings to upfront closing costs, but it doesn't account for resetting your amortization clock (paying more interest again in the early years of a new loan) or changes in loan term. A cash-flow break-even is a useful first filter, not the only factor.
Yes, many lenders allow a no-closing-cost refinance where costs are rolled into the loan balance or offset with a slightly higher interest rate. This changes the math — you break even immediately on cash flow, but pay for the closing costs slowly through a higher rate over the life of the loan.