How many months does it take for a refinance's lower monthly payment to pay back its closing costs?
This tool is for: Homeowners evaluating a mortgage refinance · Borrowers comparing a current loan to a refinance offer · Anyone asking whether the monthly savings justify the upfront fees
- Your current vs refinanced monthly payment
- The monthly savings from refinancing
- How many months you must keep the loan to break even on closing costs
Formulas Used
Fixed-Rate Monthly Payment
M = P × [r(1+r)^n] / [(1+r)^n − 1]
Where: M = Monthly principal + interest payment (USD), P = Loan principal (current or refinanced balance) (USD), r = Monthly interest rate (annual / 100 / 12) (decimal), n = Total number of payments (months)
Source: Consumer Financial Protection Bureau — amortization formula ✓ Verified
Refinance Break-Even
Break-Even Months = Closing Costs / (Current Monthly − New Monthly)
Where: Closing Costs = Total upfront cost of the refinance (USD), Current Monthly = Existing loan monthly payment (USD), New Monthly = Refinanced loan monthly payment (USD)
Source: Standard refinance cost-recovery identity — CFPB consumer guidance ✓ Verified
Key Insight
A 1.5 percentage-point rate drop on a $250,000 balance typically recovers $8,000 of closing costs in roughly 2 years — but resetting a 25-year remaining term to a new 30-year term extends total repayment even though monthly savings look attractive.
Frequently Asked Questions
What is a good break-even period for a refinance?
A common heuristic is to refinance only if you plan to stay in the home at least as long as the break-even period — and preferably twice as long. A 2-year break-even is very strong; a 5-year break-even is reasonable if you are certain you will stay; a 7+ year break-even is risky because most borrowers move or refinance again before then.
Does this calculator account for resetting a 25-year loan to a new 30-year term?
It computes the new monthly payment correctly, but the simple break-even metric only measures the time to recover closing costs from monthly savings. It does not subtract the additional interest you pay by extending the total term. For the full lifetime-cost comparison, also multiply the new monthly payment by the new term and compare that total against (current monthly × current remaining months + closing costs).
What are typical closing costs on a refinance?
Closing costs usually run 2–5% of the loan amount, or roughly $3,000–$10,000 on a $250,000 refinance. Components include lender origination (0.5–1.5%), title insurance, appraisal ($400–$700), recording fees, and any discount points the borrower buys. 'No-cost' refinances roll these into a slightly higher rate rather than charging them at close.
About This Calculator
Sources:
- Consumer Financial Protection Bureau — Refinance Your Mortgage — Federal consumer-protection guidance on refinancing decisions and cost recovery
- Federal Reserve — A Consumer's Guide to Mortgage Refinancings — Federal Reserve framework for evaluating refinance break-even and lifetime-cost trade-offs
Limitations:
- Principal + interest only — excludes property taxes, insurance, HOA, PMI
- Does not model the opportunity cost of the cash used for closing costs
- Assumes fixed interest rate for both current and new loan — variable-rate products behave differently
- Does not include prepayment penalties on the existing loan if any
- Simple break-even — does not compare lifetime interest across the two amortization schedules
When to consult a professional: Before closing on a refinance, especially for cash-out refinances, when planning to sell within 5 years, or when current loan has a prepayment penalty
This calculator estimates the simple break-even point of a refinance based on principal-and-interest monthly savings versus closing costs. It does not account for the opportunity cost of the closing-cost cash, changes to tax deductibility, or any prepayment penalties on the existing loan. This is a planning tool, not financial advice.