Generate a full amortization schedule with monthly payments, principal, interest, payoff date, extra payment savings, and CSV export.
Formula
An amortization schedule splits each payment into interest and principal. Early payments usually include more interest, while later payments reduce the principal faster as the balance goes down.
Extra payments
Extra monthly payments reduce the remaining balance sooner. That can lower total interest, reduce the number of payments, and move the payoff date forward.
Use cases
Use it when you need a full payment schedule for mortgages, business loans, equipment loans, or any fixed-rate loan with regular monthly payments.
Estimate principal, interest, timing, and payoff impact before making borrowing, payment, or budgeting decisions.
Estimate principal, interest, timing, and payoff impact before making borrowing, payment, or budgeting decisions.
Estimate principal, interest, timing, and payoff impact before making borrowing, payment, or budgeting decisions.
Estimate principal, interest, timing, and payoff impact before making borrowing, payment, or budgeting decisions.
Estimate principal, interest, timing, and payoff impact before making borrowing, payment, or budgeting decisions.
Estimate principal, interest, timing, and payoff impact before making borrowing, payment, or budgeting decisions.
Calculator details
Last updated: July 2026
Formula used
Each payment is split into interest = remaining balance × monthly rate and principal = payment − interest.
Assumptions
Example calculation
If the remaining balance is $100,000 and the monthly rate is 0.5%, that month's interest is $500 before principal is applied.
When to use this calculator
Use it to see how a loan balance decreases over time and how much interest each payment includes.
Disclaimer
This calculator is for estimation and educational use only. It does not replace professional financial, tax, legal, mortgage, investment, or accounting advice.
Questions
An amortization schedule shows each loan payment over time, including how much goes toward principal, how much goes toward interest, cumulative interest, and the remaining balance.
The calculator uses the loan amount, interest rate, loan term, compounding setting, and payment schedule to estimate each payment and split it into principal and interest.
Yes. Extra payments reduce the loan balance faster, which can lower future interest charges and shorten the payoff timeline.
Yes. The calculator includes a CSV export option so you can download the monthly schedule for planning or spreadsheet review.
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