What the math assumes
This assumes a fixed rate, monthly payments, no late payments, and that extra money is applied to principal.
Home loan scenario
Mortgage Extra-Payment Calculator
Estimate how an additional monthly principal payment may change payoff time and interest on a fixed-rate loan.
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Enter a scenario
Example values are included and clearly labeled. Replace them with your own current figures.
Understand the estimate
Assumptions and limits
Change one input at a time, record the assumption, and compare several scenarios.
What the result leaves out
It excludes taxes, insurance, fees, escrow changes, and prepayment rules. Confirm instructions with your servicer.
A useful next step
Compare extra payments with emergency savings, higher-interest debt, and other household priorities before changing cash flow.
Frequently asked questions
Does this replace my amortization statement?
No. Use your current principal, rate, remaining term, and servicer information for decisions.
Are taxes and insurance included?
No. The payment shown is principal and interest only.
What if my rate is adjustable?
This fixed-rate estimate will not model future rate changes.
Official sources and important limits
This calculator provides educational estimates only. It is not financial, tax, legal, credit, real-estate, or investment advice.
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