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Mortgage Amortization Calculator
See mortgage or loan amortization schedules, total interest, and the impact of extra payments on your payoff time.
How to use this tool
- Enter your loan amount, annual interest rate, term, and payment frequency.
- Optionally add a regular extra payment to see how it changes payoff time and total interest.
- Scan the amortization schedule to see how each payment splits into interest and principal.
Mortgage amortization calculator with extra payments
- Compare total interest with and without extra mortgage payments.
- See how even modest overpayments can dramatically shorten your loan term.
- Use the schedule to plan when you might refinance or make lump-sum payments.
How the loan payoff calculator works
- Uses standard amortization formulas based on a fixed interest rate and equal payments.
- Extra payments are treated as additional principal from the very first period.
- Assumes no fees, rate changes, or payment holidays; ideal for clean comparisons.
FAQ
- What loan types does this support?
- It works for fixed-rate mortgages, car loans, personal loans, and any other standard amortizing loan.
- Can I model one-off extra payments?
- This version focuses on regular extra payments each period. You can approximate one-off payments by temporarily increasing the extra payment for those periods.
- Which currency is used?
- Amounts are formatted in your browser's default currency. The calculations themselves are currency-agnostic.
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