Should I Refinance Calculator
Get a clear answer on refinancing: the new payment, your monthly saving, the break-even point, and whether it’s worth it for how long you’ll stay.
Free to use No sign-up needed Updates as you type
How the should i refinance calculator works
This is a decision tool, not just a payment estimator. You enter your current loan, the rate and term you have been offered, and the closing costs the lender quotes. The calculator then weighs three forces against each other: how much you save each month, how much the refinance costs upfront, and how long you realistically plan to stay in the home.
From those it returns a clear verdict rather than a wall of numbers. It answers on net savings at the year you expect to leave: what you would have paid plus what you would still owe, with and without refinancing. That catches the trap a break-even alone misses — a new 30-year loan can lower the payment and recoup its fees, yet leave you behind because it pays down more slowly.
Worked example: with current balance of $250,000, current rate of 8.25% and years left on current loan of 27, the should i refinance calculator shows yes — refinancing pays off of $15,226 ahead.
- Current payment
- $1,928.20
- New payment
- $1,693.59
- Break-even
- 19 mo
- Net after 8 yrs
- $15,226
The formula
Net savings after your planned years = (payments on the current loan + its remaining balance) − (payments on the new loan + closing costs + its remaining balance). A positive number means refinancing leaves you ahead. Break-even months — closing costs divided by the monthly saving — are shown alongside, but the verdict follows net savings because a longer new term pays the balance down more slowly.
How every calculator here computes, what it assumes and how the defaults stay current: our methodology.
- Your stated time-in-home is treated as reliable; an early move shortens the savings window and can flip the verdict.
- Net savings ignore the time value of money and any return you could earn on the cash spent on fees.
- Closing costs are paid in cash upfront rather than financed into the loan balance.
- The tool weighs cash-flow savings only and does not score cash-out proceeds or debt payoff goals.
- Rate, term, and fees are taken as quoted; a locked rate may differ from the preliminary estimate.
Results are estimates for educational purposes and are not financial advice. Confirm exact figures with your lender or a licensed advisor.
Questions about the should i refinance calculator
What if I am not sure how long I will stay in the house?
Use the break-even month as your decision line. If there is a realistic chance you sell or move before that month, treat the refinance as a coin flip rather than a clear win.
When your plans are genuinely uncertain, favoring a no-closing-cost option or simply waiting protects you from spending fees you never recoup.
Should the verdict change if I plan to make extra principal payments?
Yes, indirectly. Paying ahead shrinks your balance faster, which means you benefit from a lower rate for less time and your interest savings shrink accordingly. The break-even still holds for the fees, but the long-run advantage narrows.
If aggressive payoff is your real goal, a payoff calculator may serve you better than a refinance.
Does a "no-closing-cost" refinance beat paying fees upfront?
Not for free. Lenders recover those costs by charging a higher rate, so you pay over time instead of at signing. For a short stay it can be smart, since you leave before the higher rate adds up.
For a long stay, paying fees upfront and securing the lower rate usually costs less overall.
Is my information saved or shared?
No. Every calculation runs entirely in your browser. We never store, transmit or sell the numbers you enter.
When should I refinance my mortgage?
When the monthly saving recovers the closing costs before you sell or refinance again — the break-even point. A meaningful rate drop, a shorter term, or dropping FHA insurance are the common triggers; a tiny rate cut rarely justifies the costs.
How much lower should the rate be to refinance?
There is no fixed rule — what matters is the break-even. Even a small drop can pay off on a large balance if you keep the loan for years; a bigger drop is needed on a small balance or if you may move soon. Run your numbers above.
Sources
- CFPB — Loan Estimate explainer
- CFPB — Interest rate vs APR
- Freddie Mac — Primary Mortgage Market Survey (weekly average rates)
How the figures on this site are calculated and tested: methodology · editorial policy.
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