Debt Refinancing Calculator
Compare your current payment to an illustrative refinanced payment, and see the effect on lifetime interest.
Explore your financing options
Optional. Share a few details and a financing professional can follow up about the structures relevant to your situation. Your calculator inputs are not sent — only what you enter below.
How this calculator works
The tool amortizes the current balance over the remaining term at the current rate, and again at an illustrative new rate and term, then compares the monthly payments and the total interest paid under each scenario — making clear when a lower monthly payment comes from extending the term.
What it does not do
Rates and terms are illustrative inputs, not offers. It does not include fees, prepayment penalties, covenants, or tax effects. Extending a term can lower the monthly payment while increasing total interest.
Inputs
- Current balance (USD)
- Current annual rate (%)
- Remaining term (months)
- Illustrative new rate (%)
- New term (months)
Outputs
- Current monthly payment
- New illustrative monthly payment
- Monthly difference
- Lifetime interest difference
Machine name for AI agents / WebMCP: calculate_debt_refinancing. See the tool manifest.
Frequently asked questions
Can a lower payment cost more overall?
Yes. Extending the term can reduce the monthly payment while increasing the total interest paid. The tool shows both so the trade-off is visible.
Does this include fees?
No. It excludes fees, prepayment penalties, covenants, and tax effects, which a financing professional can help you evaluate.