Should You Refinance Your Mortgage? How to Decide
Refinancing can save thousands, or cost you money. Here is how to find your break-even point and decide whether refinancing is worth it.
When interest rates fall, "should I refinance?" becomes the question of the hour. Refinancing, replacing your current mortgage with a new one, can genuinely save thousands. But it isn't free, and done carelessly it can cost you. The decision comes down to one simple calculation.
The break-even point
Refinancing has upfront closing costs (usually 2–5% of the loan). To decide if it's worth it, work out how long it takes your monthly savings to repay those costs:
Break-even (months) = closing costs ÷ monthly savings
Say refinancing cuts your payment by $200 a month but costs $4,000 to arrange. Your break-even is 20 months. Stay in the home longer than that and you're ahead; move sooner and you've lost money.
How the numbers change with the rate drop
On a $300,000 balance, the monthly savings depend on how far your rate falls:
| Rate change | Approx. monthly savings | Break-even on $4,000 costs |
|---|---|---|
| 7.0% → 6.5% | ~$100 | ~40 months |
| 7.0% → 6.0% | ~$195 | ~21 months |
| 7.0% → 5.5% | ~$290 | ~14 months |
A common rule of thumb is that a drop of at least 0.5% to 1% makes refinancing worth investigating, but your own break-even is what actually decides it.
Refinancing into a brand-new 30-year loan lowers the payment but restarts the clock. Even at a lower rate, you could pay more interest overall. If you can handle the payment, refinancing into a shorter term captures the savings without extending the loan.
Good reasons to refinance
- Lower your rate and monthly payment, the classic case.
- Shorten your term (e.g. 30 to 15 years) to slash total interest.
- Switch loan types, such as from a variable to a fixed rate for stability.
- Drop mortgage insurance once you have enough equity.
Compare the APR of the new loan, not just the rate, and factor in every closing cost. A "no-cost" refinance usually just rolls the fees into a higher rate or balance.
Compare old vs new. Run your current balance, rate and term, then the new ones, to see the monthly and total difference.
Open the Mortgage Calculator →The bottom line
Refinancing is worth it when your monthly savings clear the closing costs well before you'd move, and when you avoid needlessly stretching the term. Find your break-even point, compare APRs, and let the math, not the rate headlines, make the call.
Frequently asked questions
When is refinancing a mortgage worth it?
When your monthly savings recoup the closing costs within a timeframe you'll comfortably stay in the home. Calculate the break-even point (closing costs ÷ monthly savings); if you'll stay well beyond it, refinancing usually pays off.
How much does refinancing cost?
Closing costs typically run 2–5% of the loan amount, covering appraisal, origination, title and other fees. These are what your monthly savings need to recover.
Does refinancing restart my loan term?
Often yes. Refinancing into a fresh 30-year loan lowers the payment but stretches repayment out again, which can raise total interest even at a lower rate. Consider a shorter new term if you can afford it.