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Home › Money & Finance › Refinance Calculator

Refinance Calculator

By the CalcMundi team · Updated October 22, 2026 · Formulas checked against standard financial math

Enter your current loan and the new offer to see your new payment, how much you save and how long it takes for closing costs to pay off.

When refinancing makes sense

A common rule is that a refinance is worth it if you will stay in the home past the break-even point: closing costs ÷ monthly savings.

Example

A $300,000 balance with 300 months left, going from 7.5% to 6.25% with $6,000 in closing costs: the payment drops about $238 a month, and you break even in 26 months.

Frequently asked questions

Should I reset to a new 30-year term?

It lowers the payment but can raise total interest. Compare the total cost line.

See also

Add this calculator to your website

Free for blogs, real estate agents, brokers and any site. Paste this code where you want the calculator to appear. It adjusts its height on its own.

Results are estimates for information only and are not financial, legal or medical advice. Rates, taxes and fees vary — confirm with a professional or your lender.