Amortization Calculator
See the complete month-by-month breakdown of principal and interest for any loan, from first payment to payoff.
Monthly payment
$1,580.17
Total interest
$318,861.22
Total to repay
$568,861.22
| Month | Payment | Principal | Interest | Balance |
|---|---|---|---|---|
| 1 | $1,580.17 | $226.00 | $1,354.17 | $249,774.00 |
| 2 | $1,580.17 | $227.23 | $1,352.94 | $249,546.77 |
| 3 | $1,580.17 | $228.46 | $1,351.71 | $249,318.31 |
| 4 | $1,580.17 | $229.70 | $1,350.47 | $249,088.61 |
| 5 | $1,580.17 | $230.94 | $1,349.23 | $248,857.67 |
| 6 | $1,580.17 | $232.19 | $1,347.98 | $248,625.48 |
| 7 | $1,580.17 | $233.45 | $1,346.72 | $248,392.04 |
| 8 | $1,580.17 | $234.71 | $1,345.46 | $248,157.32 |
| 9 | $1,580.17 | $235.98 | $1,344.19 | $247,921.34 |
| 10 | $1,580.17 | $237.26 | $1,342.91 | $247,684.07 |
| 11 | $1,580.17 | $238.55 | $1,341.62 | $247,445.53 |
| 12 | $1,580.17 | $239.84 | $1,340.33 | $247,205.69 |
How the Amortization Calculator works
Enter the loan amount, annual interest rate, and term in years. The calculator builds the full month-by-month amortization schedule, showing exactly how much of each payment goes to interest versus principal, and what the remaining balance is after every payment.
This is the same schedule a lender uses internally — it's useful for seeing how extra payments or a shorter term would change how quickly you build equity and how much interest you avoid.
Frequently asked questions
What's the difference between this and a loan calculator?
A basic loan calculator only shows your monthly payment and totals. An amortization calculator additionally breaks every single payment down into how much goes to principal versus interest, and shows the remaining balance after each one.
Why does more of my payment go to interest at the start?
Interest is charged on the remaining balance each month. Early on, the balance is at its highest, so more of each fixed payment covers interest; as the balance shrinks, more of each payment goes toward principal.
Can I use this for a mortgage?
Yes — the underlying math is identical for mortgages, auto loans, and personal loans. Just be aware this schedule only covers principal and interest; it doesn't include property taxes, insurance, or HOA fees that a mortgage servicer might also collect.