Refinance Break-Even Calculator
ANA›Life Services Authority›National Calculator Authority›Refinance Break-Even Calculator
.calc-container { max-width: 640px; margin: 2rem 0; padding: 1.5rem; background: #fff; border: 1px solid #ddd; border-radius: 8px; box-shadow: 0 1px 3px rgba(0,0,0,0.06); font-family: system-ui, -apple-system, sans-serif; } .calc-container h3 { font-family: Georgia, serif; font-size: 1.15rem; color: #1a1a1a; margin-bottom: 1rem; padding-bottom: 0.5rem; border-bottom: 2px solid var(--ac, #3d5a80); } .calc-row { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.75rem; flex-wrap: wrap; } .calc-row label { min-width: 160px; font-size: 0.9rem; color: #333; font-weight: 500; } .calc-row input[type="number"], .calc-row select { flex: 1; min-width: 120px; max-width: 200px; padding: 0.5rem 0.6rem; border: 1px solid #ccc; border-radius: 4px; font-size: 0.9rem; font-family: system-ui, sans-serif; color: #1a1a1a; background: #fafaf8; } .calc-row input:focus, .calc-row select:focus { outline: none; border-color: var(--ac, #3d5a80); box-shadow: 0 0 0 2px rgba(26,74,138,0.12); } .calc-row .unit { font-size: 0.82rem; color: #888; min-width: 30px; } .calc-btn { display: inline-block; margin-top: 0.5rem; padding: 0.55rem 1.5rem; background: var(--ac, #3d5a80); color: #fff; border: none; border-radius: 4px; font-size: 0.9rem; font-weight: 600; cursor: pointer; font-family: system-ui, sans-serif; } .calc-btn:hover { opacity: 0.9; } .calc-result { margin-top: 1.25rem; padding: 1rem 1.25rem; background: #f0f6fc; border-left: 3px solid var(--ac, #3d5a80); border-radius: 0 6px 6px 0; display: none; } .calc-result.visible { display: block; } .calc-result-label { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; color: #666; margin-bottom: 0.25rem; } .calc-result-value { font-size: 1.6rem; font-weight: 700; color: var(--ac, #3d5a80); } .calc-result-detail { font-size: 0.85rem; color: #555; margin-top: 0.5rem; line-height: 1.5; } .calc-note { margin-top: 1rem; font-size: 0.8rem; color: #888; font-style: italic; } .calc-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; margin-top: 0.75rem; } .calc-grid-item { padding: 0.6rem 0.8rem; background: #f8f9fa; border-radius: 4px; border: 1px solid #eee; } .calc-grid-item .label { font-size: 0.75rem; color: #888; text-transform: uppercase; letter-spacing: 0.04em; } .calc-grid-item .value { font-size: 1.1rem; font-weight: 600; color: #1a1a1a; } @media (max-width: 720px) { .calc-row { flex-direction: column; align-items: flex-start; gap: 0.3rem; } .calc-row label { min-width: auto; } .calc-row input[type="number"], .calc-row select { max-width: 100%; width: 100%; } .calc-grid { grid-template-columns: 1fr; } } .calc-chart { margin: 1rem 0; text-align: center; } .calc-chart svg { max-width: 100%; height: auto; } .calc-chart-legend { display: flex; flex-wrap: wrap; justify-content: center; gap: 0.6rem 1.2rem; margin-top: 0.6rem; font-size: 0.8rem; color: #555; } .calc-chart-legend span { display: inline-flex; align-items: center; gap: 0.3rem; } .calc-chart-legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; font-style: normal; } .calc-related { max-width: 640px; margin: 2rem 0 1rem; padding: 1.25rem 1.5rem; background: #f8f9fa; border: 1px solid #e8e8e8; border-radius: 8px; } .calc-related h3 { font-family: Georgia, serif; font-size: 1rem; color: #1a1a1a; margin: 0 0 0.75rem; padding-bottom: 0.4rem; border-bottom: 2px solid var(--ac, #3d5a80); } .calc-related-list { list-style: none; padding: 0; margin: 0 0 0.75rem; display: grid; grid-template-columns: 1fr 1fr; gap: 0.4rem 1.5rem; } .calc-related-list li a { font-size: 0.88rem; color: var(--ac, #3d5a80); text-decoration: none; } .calc-related-list li a:hover { text-decoration: underline; } .calc-browse-all { margin: 0.5rem 0 0; font-size: 0.9rem; font-weight: 600; } .calc-browse-all a { color: var(--ac, #3d5a80); text-decoration: none; } .calc-browse-all a:hover { text-decoration: underline; } @media (max-width: 720px) { .calc-related-list { grid-template-columns: 1fr; } }
Refinance Break-Even Calculator
Find out how many months it will take for your monthly savings from refinancing to cover the upfront closing costs.
Current Loan Balance ($)
Current Interest Rate (%)
New Interest Rate (%)
Remaining Term on Current Loan (months)
New Loan Term (months)
Total Closing Costs ($)
Calculate
function refCalc() { var resultDiv = document.getElementById('ref-result'); resultDiv.innerHTML = '';
var balance = parseFloat(document.getElementById('ref-loan-balance').value); var currentRate = parseFloat(document.getElementById('ref-current-rate').value); var newRate = parseFloat(document.getElementById('ref-new-rate').value); var currentTerm = parseInt(document.getElementById('ref-current-term').value); var newTerm = parseInt(document.getElementById('ref-new-term').value); var closingCosts = parseFloat(document.getElementById('ref-closing-costs').value);
// --- Validation --- if (isNaN(balance) || balance 30) { resultDiv.innerHTML = 'Please enter a current interest rate between 0.01% and 30%.
'; return; } if (isNaN(newRate) || newRate 30) { resultDiv.innerHTML = 'Please enter a new interest rate between 0.01% and 30%.
'; return; } if (isNaN(currentTerm) || currentTerm 360) { resultDiv.innerHTML = 'Please enter a remaining term between 1 and 360 months.
'; return; } if (isNaN(newTerm) || newTerm 360) { resultDiv.innerHTML = 'Please enter a new loan term between 1 and 360 months.
'; return; } if (isNaN(closingCosts) || closingCosts = currentRate) { resultDiv.innerHTML = 'The new interest rate must be lower than the current rate to achieve savings.
'; return; }
// --- Monthly Payment Formula: M = P * [r(1+r)^n] / [(1+r)^n - 1] --- var rCurrent = currentRate / 100 / 12; var rNew = newRate / 100 / 12;
var currentPayment = balance * (rCurrent * Math.pow(1 + rCurrent, currentTerm)) / (Math.pow(1 + rCurrent, currentTerm) - 1);
var newPayment = balance * (rNew * Math.pow(1 + rNew, newTerm)) / (Math.pow(1 + rNew, newTerm) - 1);
var monthlySavings = currentPayment - newPayment;
if (monthlySavings ' + 'Current Monthly Payment$' + fmt(currentPayment) + '' + 'New Monthly Payment$' + fmt(newPayment) + '' + 'Monthly Savings$' + fmt(monthlySavings) + '' + 'Closing Costs$' + fmt(closingCosts) + '' + 'Break-Even Point' + Math.ceil(breakEvenMonths) + ' months (' + breakEvenYears.toFixed(1) + ' years)' + 'Net Interest Saved (lifetime)$' + fmt(totalInterestSaved) + '' + '' + 'If you stay in your home longer than ' + Math.ceil(breakEvenMonths) + ' months, refinancing is financially beneficial.
'; }
#### Formulas Used
Monthly Payment: M = P × [r(1+r)n] / [(1+r)n − 1] where P = loan balance, r = monthly interest rate (annual rate / 12), n = number of months.
Monthly Savings: Savings = Current Monthly Payment − New Monthly Payment
Break-Even Point (months): Break-Even = Closing Costs ÷ Monthly Savings
Net Lifetime Interest Saved: Net Savings = (Total Interest on Current Loan) − (Total Interest on New Loan) − Closing Costs
#### Assumptions & References
- Formula reference: Consumer Financial Protection Bureau (CFPB) — Understanding Loan Options; Freddie Mac Mortgage Education.
- Break-even analysis methodology per Investopedia: Refinance Break-Even Point.
More Calculators
- Matrix Operations Calculator (Addition, Multiplication, Determinant, Inverse)
- Massachusetts EV Rebate and Incentive Savings Calculator
- Home Infestation Severity Score Calculator
- Prime Factorization and Divisibility Calculator
- Termite Treatment Coverage Area Calculator
- THC/CBD Ratio Calculator
- Medical Marijuana Dosage Calculator
- Oregon Rebate Savings Estimator — estimate Energy Trust of Oregon and utility rebates for qualifying HVAC equipment upgrades
- Energy Savings Calculator (Old vs New HVAC System)
- AC Unit Size Calculator (BTU for Phoenix Climate)
- Phoenix Cooling Load Calculator (Manual J Estimate)
- Ventilation Rate Calculator (ASHRAE 62.2)
Read Next
Pest Control Service Frequency Cost Planner ANA › Life Services Authority › National Calculator Authority › Pest Control Service Frequency & Cost Planner .calc-container...
Study Time Planner Authority Network America › Life Services Authority › National Calculator Authority .calc-container { max-width: 640px;...