AI
AICalculators

Mortgage Refinance Calculator

Compare your current mortgage with a refinanced loan. See your breakeven timeline, monthly savings, and whether refinancing makes sense for you.

Current Loan

$280,000
6.5%
25 years
Current Monthly Payment
$1,890.58

New Loan

5.5%
$6,000

2.1% of loan balance

$0
Your Estimated Monthly Savings
$300.77
per month · refinancing from 6.5% to 5.5%

Should You Refinance?

The 1% Rule
Your rate drops 1.0 percentage points — meets the 1% threshold
Breakeven Period
You’ll recoup closing costs in 1.7 years
Net Lifetime Savings
Refinancing costs $11,157 more over the life of the loan
Term Impact
Extends your loan by 5 years — lower payments but more total interest

Loan Comparison

MetricCurrent LoanNew Loan
Monthly Payment$1,890.58$1,589.81
Interest Rate6.5%5.5%
Remaining Term25 years30 years
Loan Balance$280,000$280,000
Total Interest$287,174$292,331
Total Cost$567,174$578,331

Refinance Summary

Monthly Savings
$300.77
Breakeven Point
1.7 years
Interest Saved
-$5,157
Closing Costs
$6,000

How This Calculator Works

Monthly savings = current monthly payment − new monthly payment (both calculated using the standard amortization formula with your respective rates and remaining terms).

Breakeven months = Closing costs ÷ Monthly savings

If your breakeven is under 36 months and you plan to stay in the home, refinancing almost always makes sense. Over 60 months, run the numbers carefully.

Total interest comparison is calculated by summing all future interest payments on both the current loan (remaining term) and the proposed refinanced loan. This accounts for term extensions — refinancing into a new 30-year loan when you have 20 years left will show a higher total cost even if the monthly payment drops.

Frequently Asked Questions