Finance & money·Loans
Amortization Schedule
Generate a loan amortization preview with monthly payment, principal split, total interest, and payoff schedule. Client-side and private.
Added May 4, 2026
Quick examples
Input
Result
Enter a value for loan amount to see your result.
How it works
Builds a fixed-rate loan amortization preview showing the monthly payment, total interest, and how early payments split between principal and interest.
Formula
Payment = P x r / (1 - (1 + r)^(-n))
- P
- Loan principal
- r
- Monthly interest rate
- n
- Number of monthly payments
Step by step
- 01Convert the annual interest rate to a monthly rate.
- 02Calculate the fixed monthly payment from principal, monthly rate, and term.
- 03For each month, compute interest from the remaining balance.
- 04Subtract interest from the payment to find principal repaid, then reduce the balance.
Examples
$250,000 at 6.5% for 30 years
A 30-year loan starts interest-heavy; month 1 includes about $1,354 in interest and $226 in principal.
Inputs
- Loan amount:
- 250000
- Annual interest rate:
- 6.5
- Loan term:
- 30
Result
- Monthly payment:
- 1580.17
- Total interest:
- 318861.07
Note: The table shows the first 12 months and the final month. Lender rounding may differ by a few cents.
Frequently asked questions
Why is early interest so high?
Interest is charged on the remaining balance, so the first payments have the largest interest portion.
Is this a full lender statement?
No. It models standard monthly amortization before fees, escrow, rounding rules, and partial first periods.