Mortgage planning tool
See how extra payments change a fixed-rate payoff
Compare a baseline with one-time, monthly, annual, and biweekly-equivalent strategies. Numbers stay in your browser and the assumptions stay visible.
Payoff comparison
Time and interest saved compare each strategy with the no-extra-payment baseline. Extra payments are applied only to principal.
| Strategy | Estimated payoff | Time saved | Interest saved | Total interest |
|---|
Notes
Use this space for project notes before saving as PDF.
Disclaimer: Use calculations at your own risk. For critical applications, verify results against your governing standards/specifications.
What each strategy means
A one-time payment is applied in the month selected. Monthly extras start in the first payment month. Annual extras start one year later and recur annually. The biweekly-equivalent option models one extra scheduled principal-and-interest payment each year divided across twelve months.
Your servicer’s posting rules, any escrow changes, payment timing, prepayment terms, and actual payoff amount can differ. Confirm decisions with your lender or servicer.
More Money & Home tools
Continue with another focused tool in this category, or return to the complete tool directory.
- Loan and Mortgage Calculator — Model fixed-rate loans, separate escrow from principal and interest, add extra payments, and compare payoff scenarios.
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