Last reviewed by Toollabz editorial ·
Compare your current mortgage payment to a refinanced rate and closing costs to estimate monthly savings and break-even timing.
Quick answer: Mortgage Refinance Calculator
Compare old vs new P&I, then divide closing costs by monthly savings to see break-even months.
Example: $320k balance, 7% → ~$2,132/mo; same term at 6% → ~$1,919/mo; $6k costs ÷ $213 ≈ 28 months to recover closing.
Calculations follow the documented formula on this page; rounding and input units can change the last digit-treat outputs as educational estimates unless you reconcile with source systems.
* This is an estimate. Actual amounts may vary slightly based on input assumptions.
Refinance math is amortization twice: what you pay now on the remaining balance vs a fresh note at a lower rate. Break-even ignores time value of money but is the quick gut check.
Compare your current mortgage payment to a refinanced rate and closing costs to estimate monthly savings and break-even timing.
Inputs on this page: Current Mortgage Balance, Current Interest Rate (%), New Interest Rate (%), Remaining Term (Years). Assumptions stay visible so you can reproduce the figure elsewhere.
Long-form walkthroughs that pair well with this calculator. When you need narrative context beyond the live fields, start here and return to the tool to plug in your own numbers.
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Continue in the Finance category hub, the Finance tools collection, or the glossary. Related calculators in this session: Loan Calculator, Mortgage Affordability Calculator USA, Debt Payoff Calculator Avalanche, Early Loan Payoff Calculator, Refinance Calculator Mortgage, EMI Calculator.
The Formula
Amortized payment at old vs new rate; Break-even Months = Closing Costs / Monthly Savings| This tool | Amortized payment at old vs new rate; Break-even Months = Closing Costs / Monthly Savings |
|---|---|
| Related intent: mortgage refinance calculator | See paired tools for mortgage refinance calculator-each page documents its own core relationship next to the live form. |
| Related intent: refinance break even calculator | See paired tools for refinance break even calculator-each page documents its own core relationship next to the live form. |
Core relationship for Mortgage Refinance Calculator:
Amortized payment at old vs new rate; Break-even Months = Closing Costs / Monthly Savings
Worked check: $320k balance, 7% → ~$2,132/mo; same term at 6% → ~$1,919/mo; $6k costs ÷ $213 ≈ 28 months to recover closing.
Keep the same assumptions and open a neighbor calculator when your question branches: Loan Calculator, Mortgage Affordability Calculator USA, Debt Payoff Calculator Avalanche, Early Loan Payoff Calculator. Each page documents its own formula beside the fields.
Learning links: Methodology · Editorial policy · Glossary
$320k balance, 7% → ~$2,132/mo; same term at 6% → ~$1,919/mo; $6k costs ÷ $213 ≈ 28 months to recover closing.
Re-enter the same numbers in the calculator above to confirm the page math matches the interactive result.
People who care about mortgage refinance calculator use Mortgage Refinance Calculator as a planning sandbox: Cash-out refis change LTV risk and total interest paid - don’t only stare at payment.
Instant response
Run Mortgage Refinance Calculator in the browser and read the breakdown beside the form.
Transparent formula
The formula and worked example on this page match what the calculator uses.
Privacy friendly
No account required; inputs stay in your session unless you choose to share them.
Cross-device ready
Layout works on mobile, tablet, and desktop for the same field labels.
Official references for context. Calculator outputs are planning estimates—confirm material decisions with the primary authority or a qualified professional. See our methodology and editorial policy.
Reviewed July 18, 2026 · Content stamp 2026-07-18
Click a question to expand the answer.
Yes, the Mortgage Refinance Calculator is completely free with no hidden limits.
Yes. All tools are optimized for desktop, tablet, and mobile devices.
Closing costs divided by monthly payment savings gives months to recover upfront fees.
No - add taxes, insurance, and mortgage insurance separately for a full housing payment view.
Yes, it shares the same math with a dedicated slug for refinance-intent searches.
Compare old vs new P&I, then divide closing costs by monthly savings to see break-even months.
$320k balance, 7% → ~$2,132/mo; same term at 6% → ~$1,919/mo; $6k costs ÷ $213 ≈ 28 months to recover closing.
Cash-out refis change LTV risk and total interest paid - don’t only stare at payment. If you reset to 30 years, payment can drop while lifetime interest rises. Lender credits vs points flip the break-even - model both scenarios.
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Reviewed by Toollabz Editorial
Finance & tools editor | Last reviewed July 18, 2026
See methodology and editorial policy.