EachCalculatorAmortization Calculator
See the full month-by-month breakdown of principal and interest for any fixed-rate loan, and how your remaining balance declines over time.
Monthly Payment
$434.11
Total Interest
$12,092.61
Total Paid
$52,092.61
Remaining Balance Over Time
How It Works
Splitting each payment
Every payment is split between interest (calculated on the current balance) and principal (which reduces the balance). The fixed payment amount stays the same, but the split shifts over time.
Why the balance chart curves
Early payments are interest-heavy because the balance is highest, so the balance declines slowly at first and much faster as the loan approaches payoff.
Example Calculation
On a $40,000 loan at 5.5% over 10 years, the first payment is roughly $183 interest and $250 principal — by the final year, almost the entire payment goes to principal.
Common Mistakes
- Assuming principal and interest are split evenly throughout the loan — they're not, the split changes every payment.
- Not realizing extra payments toward principal early in the loan save far more interest than the same extra payment made later.
- Confusing the amortization schedule with the total cost of the loan, which also includes any taxes, insurance, or fees not shown here.
Frequently Asked Questions
- Why does so little of my early payments go to principal?
- Interest is charged on the outstanding balance, which is at its highest right after the loan starts, so a larger share of each early payment covers interest before principal.
- Does paying extra reduce my amortization schedule?
- Yes — any extra amount paid toward principal reduces the balance immediately, which reduces all future interest charges and can significantly shorten the loan (this calculator shows the schedule without extra payments).