Mortgage calculator
Refinance Calculator
Estimate monthly savings and break-even time for a refinance.
September 2026
Enter your details
Results update privately in your browser.
How we calculate
A transparent estimate you can inspect.
Formula
Current and refinanced principal-and-interest payments are compared; closing costs are treated as a cash cost for break-even and lifetime-savings estimates.
Privacy
Your values are calculated locally and are not sent to a server by this calculator.
Use with care
Results are for informational purposes, not financial, tax, legal, lending, or investment advice.
Understanding your results
Monthly savings compares two principal-and-interest schedules; break-even compares those savings with cash closing costs.
Assumptions and limitations
- Excludes taxes, escrow, PMI, and lender-specific fees.
Common questions
Before you decide
Does this include every home cost?
No. Review the included fields and plan separately for maintenance, closing costs, and PMI where relevant.
Is this a loan offer?
No. It is an estimate, not lending or financial advice.