Amortization Schedule Calculator
Generate a year-by-year breakdown of principal paid, interest paid, and remaining balance for any fixed-rate, fully amortizing loan.
| Year | Principal paid | Interest paid | Remaining balance |
|---|
How this calculator works
The fixed monthly payment is calculated with the standard amortization formula, then each month is simulated in sequence: interest is charged on the remaining balance, the rest of the payment reduces principal, and the new balance carries into the next month. Months are aggregated into yearly rows for readability.
Formula reference: CFPB: What is an amortization schedule?
Example
Example: a $250,000 loan at 6% APR over 30 years has a fixed payment of about $1,498.88/month. In year 1, roughly $14,916 of that year's payments goes to interest and about $3,070 goes to principal — that ratio gradually flips over the life of the loan.
Frequently asked questions
- Why does the principal/interest split change every year?
- Interest is charged on the remaining balance. As the balance shrinks, the interest portion of each payment shrinks, so more of each payment goes toward principal over time.
- Can I see a month-by-month schedule instead of yearly?
- This page summarizes by year to keep the table readable for long loans. The underlying simulation is monthly, so a month-by-month view can be added if you need that level of detail.
This calculator provides estimates for general informational purposes only and does not constitute financial, tax, or legal advice. Always confirm important numbers with a qualified professional or your lender/institution before making a decision.