Compare your current mortgage vs a refinance option. Calculate monthly savings, break-even point, and total interest savings. Free refinance calculator with no sign-up needed.
Monthly Payment = P × [r(1+r)^n] / [(1+r)^n - 1]
Where P = loan balance, r = monthly interest rate (annual rate ÷ 12), n = total number of payments
Monthly Savings = Current Payment - New Payment
Break-Even Months = Closing Costs / Monthly Savings
Total Interest Savings = (Current Total Remaining Interest) - (New Total Interest + Closing Costs)
Net Savings = (Monthly Savings × Months You Stay) - Closing Costs
ユースケース
Evaluating whether to refinance your current mortgage
Comparing different refinance offers from multiple lenders
Deciding between a shorter term with higher payments vs. lower total interest
Determining if paying discount points makes financial sense
Planning how long you need to stay in your home to benefit from refinancing
主な利点
Get accurate refinance comparison results instantly
Save time with automated break-even calculations
Make informed decisions with clear savings data
Free on any device no downloads
プロのヒント
Double-check inputs for accuracy
Run multiple scenarios
Combine with other tools
避けるべきよくある間違い
Using inaccurate inputs
Ignoring key factors
Misinterpreting outputs
重要な用語の説明
Input: Values you provide
Output: Results computed
Formula: Method used
Result: Calculated answer
関連コンセプト
Mortgage Calculator – Calculate your current or potential mortgage payments
Amortization Schedule – See how each payment splits between principal and interest
Break-Even Calculator – Analyze the point where costs equal savings in any scenario
例
You have a $250,000 mortgage at 6.5% with 25 年 remaining. Your current payment is $1,686/month. You find a refinance offer at 5.5% for 30 年 with $5,000 in closing costs. Your new payment would be $1,419/month — saving $267/month. Break-even: $5,000 / $267 = 18.7 ヶ月. If you stay 10 年, net savings = ($267 × 120) - $5,000 = $27,040. Total interest savings over the full term: $169,640.
