Amortization Schedule
Switch between a year-by-year summary and every individual payment. Extra principal is shown separately.
| Year | Payment | Principal | Interest | Extra Principal | Total Paid | Ending Balance |
|---|
How Loan Amortization Works
Why interest is highest early
Each period's interest is calculated from the remaining balance. Because the balance is largest near the beginning, a larger share of early payments goes to interest.
What extra principal changes
When an extra amount is applied directly to principal, the balance falls faster. Future interest is then calculated on a smaller balance, which can reduce total interest and shorten the payoff timeline.
Interest rate vs. APR
This calculator expects the loan's annual interest rate used to calculate periodic interest. APR can include certain fees and costs, so it should not automatically be substituted for the note rate when recreating a lender's amortization schedule.
Why your lender may differ
Some loans use daily interest, different payment timing or rounding rules. Use your loan agreement or lender statement when you need an exact contractual payoff figure.
Common Uses
Auto & personal loans
See how much of each fixed payment reduces principal and how much goes to interest.
Mortgage principal & interest
Use this page for the loan schedule itself. For property tax, homeowners insurance, PMI and HOA, use the dedicated Mortgage Calculator.
Extra-payment planning
Compare the baseline schedule with monthly, annual or one-time extra principal payments.
Schedule export
Download the payment-by-payment schedule as CSV for your own records or spreadsheet analysis.