Mortgage Refinance Calculator
Compare your current mortgage against a potential refinance, estimate your new monthly payment, calculate closing-cost break-even, project long-term interest savings, and test whether refinancing makes sense for your actual time horizon.
Burrow Tip: A refinance is not automatically “good” just because the rate is lower. The real question is whether the payment savings and interest savings justify the reset in loan term and the closing costs.
This tool helps you compare the keep-current-loan path against the refinance path using the same assumptions.
Current mortgage
Refinance loan offer
Advanced assumptions
Results
Balance comparison over time
Cost breakdown
Refinance summary
Side-by-side comparison table
| Month | Date | Current payment | Current interest | Current balance | New payment | New interest | New balance | Cumulative savings |
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Decision timeline (Mermaid code)
If your site supports Mermaid elsewhere, you can paste this snippet into a Mermaid block. This tool does not load Mermaid.
How to use these results
A refinance should be judged on more than just the headline rate. In practice, the decision depends on: your remaining balance, the new term, closing costs, how long you’ll keep the loan, and whether you are prioritizing lower monthly payments or lower total interest.
- Check break-even first: if you will likely move or refinance again before break-even, the new loan may not make sense.
- Watch the term reset: a lower payment can still cost more over time if you stretch the loan back out.
- Separate cash-out logic: taking cash out changes the comparison because you are borrowing more, not just refinancing cheaper.
- Compare both payment and total cost: short-term affordability and long-term interest savings can point in different directions.
This tool is best used as a planning and screening calculator. Final refinance decisions should be checked against lender disclosures and your own time horizon.