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When to refinance your mortgage (2026 guide)
The honest 2026 test isn't the 1% rule — it's the break-even period. Run the math first; rate-shop second.
Refinancing makes sense when the lifetime interest savings exceed your closing costs — and you'll stay in the home long enough to get there. That's the whole test. The "1% rule" you've heard for years is a rough approximation that often understates marginal cases and overstates obvious ones.
Here's the actual math, the timing signals, and how to shop rates without burning your score.
The break-even calculation
Break-even months = closing costs ÷ monthly payment savings
That's the period before refinancing starts net-positive. If you'll keep the home longer than the break-even, refi wins. If not, don't.
| Scenario | Old rate | New rate | Monthly savings | Break-even |
|---|---|---|---|---|
| $300K @ 7.5% → 6.5% | 7.5% | 6.5% | $201 | ~30 months ($6K costs) |
| $300K @ 7.5% → 6.0% | 7.5% | 6.0% | $298 | ~20 months ($6K costs) |
| $500K @ 7.0% → 6.25% | 7.0% | 6.25% | $245 | ~33 months ($8K costs) |
| $200K @ 6.75% → 6.25% | 6.75% | 6.25% | $65 | ~77 months ($5K costs) |
Notice the bottom row. A 0.5% rate drop sounds tempting, but the break-even is over 6 years. Unless you're certain you'll stay that long, that refi loses money.
Five signals it's time to refinance
- Market rates are 0.75%+ below your current rate AND your break-even is under your expected stay.
- Your credit score jumped 60+ points since origination — you may qualify for a meaningfully better tier.
- Your home appreciated enough to drop PMI (loan-to-value below 80%). Eliminating PMI alone can pay for closing costs.
- You're carrying an ARM that's about to reset higher. Refinance to a fixed rate before the adjustment hits.
- You need to remove a co-borrower (divorce, partnership change) — refinance is the cleanest path.
When NOT to refinance
- You're planning to sell within 3 years. Break-even almost never beats a short stay.
- You're early in a 30-year and refinancing into another 30-year. The amortization clock resets — early years are nearly all interest. A new 30-year at a 1% lower rate can still cost more lifetime interest if you reset the clock late.
- The rate drop is under 0.5%. Closing costs eat the savings.
- Your credit dropped. The new rate might be higher than your existing one.
- You can't document income clearly. Self-employed and 1099 borrowers should weight the paperwork cost — a non-trivial drain on a marginal refi.
How to shop rates without trashing your score
- Pull your credit report at AnnualCreditReport.com. Know your score before lenders do.
- Get 3+ quotes within a 14-day window. FICO bundles mortgage inquiries inside that window as a single inquiry.
- Compare Loan Estimates side-by-side. By law, every lender must give you a standardized 3-page Loan Estimate within 3 days of application. Compare line item by line item — not just APR.
- Look at lender credits vs. rate trade-offs. A lender may offer a higher rate with $5K of lender credit (covering closing costs). Often a worse deal long-term unless break-even is short.
- Lock the rate when you apply. Rates move daily. Lock = 30–60 days typically.
Where to get quotes
Online lenders typically beat banks on both rate and fees, with a faster process and less paperwork friction.
Or compare: Rocket Mortgage
Full lender breakdown in our how to get a mortgage guide.
Rate-and-term vs. cash-out refinance
| Feature | Rate-and-term refi | Cash-out refi |
|---|---|---|
| Loan amount | Same as existing | Higher — you get cash at closing |
| Typical rate | Best available | ~0.25–0.50% higher |
| Max LTV | 95–97% | 80% typically |
| Best use | Lower payment or shorter term | Home improvements, debt consolidation at lower rate |
| Avoid for | N/A | Vacations, depreciating purchases, market speculation |
The 30-to-15 question
Refinancing from a 30-year to a 15-year cuts lifetime interest dramatically. On a $300K loan, a 30-year at 6.5% costs ~$382K in interest. A 15-year at 5.5% costs ~$141K. The 15-year saves ~$240K in interest.
The catch: the 15-year monthly payment is much higher — ~$2,453 vs. ~$1,896 on the 30-year. Don't refinance to a 15-year unless the higher payment is comfortable even if your income drops temporarily.
The flexible alternative: keep the 30-year, but pay an extra $556/month toward principal. Same payoff speed as a 15-year, but if you ever lose income, you can drop back to the original payment without missing a beat. Slightly worse interest math, much better resilience.
The bottom line
The right refi is not the lowest rate — it's the one where the break-even period is shorter than your expected stay. Run that math first, get 3+ quotes inside a 14-day window, and compare Loan Estimates line by line, not by APR alone.
If the break-even is under 30 months and you're staying at least 5 years, refinancing is almost always worth doing. If the break-even is over 4 years and you might move sooner, pass.
Related reading
Frequently asked questions
- Is the '1% rule' still a good rule of thumb?
- No. The old wisdom — only refinance if you can drop your rate by 1% — was built around higher closing costs and longer-tenure homeowners. The honest 2026 test is the break-even period: closing costs ÷ monthly savings. If you'll stay in the home longer than the break-even, refinance. If not, don't.
- How long does a refinance take?
- 30–45 days from application to closing for a vanilla rate-and-term refi. Cash-out refis run 45–60 days. The bottleneck is appraisal and underwriting, not the lender's interest level. Lock your rate at application — rate lock typically runs 30–60 days and a longer lock costs more.
- What are typical closing costs?
- 2–5% of the loan amount, or roughly $4,000–$8,000 on a $200K loan. The main line items: lender origination, appraisal ($500–$700), title insurance, recording fees, and prepaid escrow. Some lenders offer 'no-closing-cost' refis — they just roll the costs into a higher rate. The break-even math still applies.
- Will refinancing hurt my credit score?
- A small, temporary hit — 5–10 points from the hard inquiry, recovering in 3–6 months. Multiple mortgage inquiries within a 14–45 day window count as a single inquiry for FICO scoring, so shopping rates aggressively doesn't multiply the damage.
- Should I refinance from a 30-year to a 15-year?
- Only if the monthly payment fits comfortably (the 15-year is typically 40–60% higher). The math is excellent — much lower lifetime interest, faster equity build, lower rate — but only works if you don't end up cash-strapped. A safer alternative: keep the 30-year and make extra principal payments equal to a 15-year schedule. Same payoff speed, more flexibility.
- What about cash-out refinances?
- Useful when home equity is the only place to get low-rate borrowing — and the use case is durable (home improvements, debt consolidation at materially lower APR). Avoid for discretionary spending. The new loan typically carries a slightly higher rate than a rate-and-term refi.