Quick Answer
The classic rule: refinancing pays off when market rates are at least 0.75%–1% below your current rate and you’ll stay in the home past the break-even point. But rate drops aren’t the only reason — cash-out needs, PMI removal and ARM escapes all count.
Check your own numbers in the Refinance Calculator — it shows monthly savings and break-even months instantly.
The Break-Even Math
Refinancing isn’t free: closing costs typically run 2%–5% of the loan amount — $5,600 on a $280,000 balance. The break-even formula:
Break-even months = Closing costs ÷ Monthly savings
Save $250/month on a $5,600 refinance and you break even in 22.4 months. Stay 5 more years and you net ~$9,400. Move in a year and you’ve lost money.
4 Situations Where Refinancing Makes Sense
- The rate drop. 0.75%+ below your rate with a sub-36-month break-even is the textbook case.
- Escaping an ARM. When your adjustable-rate teaser period is ending, locking a fixed rate buys certainty even at a slightly higher rate.
- Killing PMI. If your home value has risen and you’re under 20% equity on paper, a refinance to a lower LTV can eliminate mortgage insurance.
- Cash-out for higher-interest debt. Replacing 22% APR credit card debt with 6.5% mortgage debt can be sound math — but only if you fix the spending that caused it.
3 Situations Where It Backfires
- Restarting the clock. Refinancing a 20-year-old loan into a fresh 30-year term can lower payments while increasing lifetime interest — compare total interest, not just monthly payment.
- Moving soon. Break-even you’ll never reach is pure loss.
- Small rate cuts. Refinancing for 0.25% rarely clears closing costs.
How to Shop a Refinance (Do It in Order)
- Get Loan Estimates from at least 3 lenders — same day, same lock terms.
- Compare the APR, not just the rate — APR includes fees.
- Ask each lender to match the best competitor estimate.
- Lock only when your break-even math clears your realistic time-in-home.
FAQ
How much does refinancing cost?
2%–5% of the loan amount: appraisal, title, origination and government fees. Some lenders offer “no-cost” refis that roll costs into a slightly higher rate — sometimes worth it if you may move early.
Does refinancing hurt my credit?
Temporarily. The application triggers a hard inquiry and the new account lowers average account age. Impact is typically a few points for a few months.
Can I refinance with bad credit?
Below 620, options thin out and pricing worsens. Sometimes the smarter move is 6–12 months of credit repair first — the improved rate more than covers the wait.
This article is for educational purposes only and is not financial advice. See our full disclaimer.
Related Reading
- 15-Year vs 30-Year Mortgage — how term length changes your payment and your total interest.
- How Much House Can I Afford? — set your budget before you shop, not after.