Refinance Calculator

Calculate your monthly savings, break-even point, and total savings from refinancing your mortgage. Compare rate-and-term vs cash-out refinancing options.

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Monthly Payment Savings
Break-Even Point (Months)
Total Interest Savings
New Monthly Payment
Current Monthly Payment
Extended More scenarios, charts & detailed breakdown
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Monthly Savings
Break-Even (Months)
Lifetime Interest Savings
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Professional Full parameters & maximum detail
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Refinance Decision

Monthly Payment Savings
Break-Even (Months)
Net Savings at Your Horizon
Worth Refinancing?

Interest Cost Comparison

Total Interest Remaining (Current)
Total Interest (New Loan)

Loan Details

Current LTV
Points Cost

How to Use This Calculator

  1. Enter your Current Loan Balance and Current Interest Rate.
  2. Enter the Remaining Term on your current mortgage.
  3. Enter the New Rate and New Term you are considering.
  4. Enter estimated Closing Costs — get quotes from 2–3 lenders.
  5. See your Monthly Savings and Break-Even Point instantly.

Formula

Monthly Payment: M = P × [r(1+r)^n] / [(1+r)^n − 1]

Monthly Savings = Current Payment − New Payment

Break-Even = Closing Costs ÷ Monthly Savings

Total Savings = (Current Total Interest) − (New Total Interest) − Closing Costs

Example

Example: $280,000 balance, 7.5% → 6.5%, 25 years remaining → 30-year refi, $5,000 closing costs.

  • Current Payment: $2,030/month
  • New Payment: $1,769/month
  • Monthly Savings: $261/month
  • Break-Even: $5,000 ÷ $261 = 20 months
  • Stay 7+ years → refinancing saves significantly

Frequently Asked Questions

  • Refinancing generally makes sense when the new rate is at least 0.5–1% lower than your current rate, you plan to stay in the home long enough to recoup closing costs (break-even period), and you are not too far into your loan term (since early payments are mostly interest).
  • The break-even point is how many months it takes for your cumulative monthly savings to equal the upfront closing costs. If you plan to stay in the home beyond the break-even point, refinancing is financially beneficial.
  • Refinance closing costs typically run 2–5% of the loan amount. On a $280,000 loan, expect $5,600–$14,000. Common costs include origination fees, appraisal, title search, and recording fees. Some lenders offer "no-closing-cost" refis that roll costs into the rate.
  • Discount points are upfront fees (1 point = 1% of loan amount) paid to lower the interest rate. Each point typically lowers the rate by 0.25%. They make sense if you stay in the home long enough to recoup the upfront cost through lower monthly payments.
  • A cash-out refinance replaces your current mortgage with a larger loan, letting you take the difference as cash. It is useful for home improvements, debt consolidation, or large expenses, but increases your loan balance and monthly payment.

Related Calculators

Sources & References (5)
  1. CFPB — Refinancing Your Mortgage — Consumer Financial Protection Bureau
  2. Freddie Mac — Refinance Resources — Freddie Mac
  3. Federal Reserve — Mortgage Refinancing Data — Federal Reserve
  4. HUD — Streamline Refinance Programs — U.S. Department of Housing and Urban Development
  5. IRS Publication 936 — Home Mortgage Interest Deduction — Internal Revenue Service