Refinance Savings Calculator
Find out exactly how much money refinancing puts back in your pocket — by month and by year.
About this tool
This savings-first view of the refinance decision shows monthly payment reduction, total savings over your stay horizon, and the break-even timeline side by side.
How to use it
Quick steps to get the most out of this utility.
- 1
Enter current mortgage details
Balance, rate, and remaining term.
- 2
Enter refinance terms
New rate, new term, and total closing costs.
- 3
Choose how long you plan to stay
The calculator reports net savings for exactly that horizon.
- 4
Compare scenarios
Switch between pay-upfront and roll-in to see which saves more in your window.
Two Types of Savings — and Which One Matters
Monthly savings = the immediate cash flow relief of a lower payment. Stay-horizon savings = total cumulative relief minus the upfront closing costs you paid. The second number is the one that determines whether refinancing makes you richer. A refinance that saves $150/month but costs $7,500 to close requires 50 months before you come out ahead — if you sell at month 36, you lost $3,000.
Frequently asked questions
Does a lower rate always mean savings?+
Not if the term resets. Dropping from 6.75% with 27 years left to 5.5% over 30 years may save you $242/month but costs $46,000 in extra lifetime interest from the term extension.
How do I maximize refinance savings?+
Pay closing costs upfront if you have cash, keep the same or shorter term, and refinance only when you plan to stay past break-even.
Keep exploring
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More views of the same calculator
Open main calculator →Same underlying engine, written for different use cases. Pick the angle that matches your situation.