← All calculators

Mortgage Refinance Calculator

Should you refinance? Compare current and new mortgage. Shows savings and break-even.

New monthly payment
$1,798.65
Current monthly payment
$2,112.58
Monthly savings
$313.93
Break-even point
12.7 months
Lifetime interest savings (approx)
$32,962.00

A refinance calculator compares your current mortgage with a new one to show monthly savings, break-even point, and lifetime interest savings. Refinancing usually makes sense when the new rate is at least 0.75–1% below your current rate, assuming you plan to stay long enough to recoup closing costs.

How to use this calculator

  1. Enter your current loan balance and interest rate.
  2. Enter the years left on your current mortgage.
  3. Enter the new rate and new term you're considering.
  4. Add estimated closing costs.
  5. Review monthly savings and break-even point.

Example

  • Balance: $300,000
  • Old rate: 7.25%
  • New rate: 6.00%
  • New term: 30 yrs
  • Closing: $4,000
Monthly savings: $249 · Break-even: 16 months

Dropping from 7.25% to 6% saves about $249 a month. At $4K closing costs, you recoup those in 16 months — after that, pure savings.

Frequently asked questions

+When should I refinance?

Refinance when you can lower your rate by 0.75% or more AND you plan to stay in the home long enough to recoup closing costs through monthly savings. The break-even point is the key number.

+What is the break-even point?

The break-even point is closing costs divided by monthly savings — how many months until the refinance pays for itself. If you'll sell before then, refinancing loses money.

+Will refinancing restart my 30 years?

Yes — if you refinance into a new 30-year loan, you reset the clock. Many people refinance into a 15 or 20-year loan to avoid restarting the amortization.

+Does refinancing hurt my credit?

Refinancing causes a hard credit pull that drops your score a few points temporarily. The impact is minor and typically recovers within months.

Related calculators