Amortization Calculator
Break a loan into month-by-month principal and interest so you can see your payment structure, measure payoff speed, and test the impact of extra payments.
Loan Inputs
Use this for mortgages, auto loans, personal loans, or any fixed-rate installment loan.
Payment Summary
Extra principal payments reduce both payoff time and total interest.
Base payment
$2,270.09
Actual payment
$2,270.09
Total interest
$467,233.60
Interest saved
$0.00
Payoff time: 30y 0m
| Month | Payment | Principal | Interest | Balance |
|---|---|---|---|---|
| 1 | $2,270.09 | $301.34 | $1,968.75 | $349,698.66 |
| 2 | $2,270.09 | $303.04 | $1,967.05 | $349,395.62 |
| 3 | $2,270.09 | $304.74 | $1,965.35 | $349,090.88 |
| 4 | $2,270.09 | $306.46 | $1,963.64 | $348,784.42 |
| 5 | $2,270.09 | $308.18 | $1,961.91 | $348,476.24 |
| 6 | $2,270.09 | $309.91 | $1,960.18 | $348,166.32 |
| 7 | $2,270.09 | $311.66 | $1,958.44 | $347,854.66 |
| 8 | $2,270.09 | $313.41 | $1,956.68 | $347,541.25 |
| 9 | $2,270.09 | $315.17 | $1,954.92 | $347,226.08 |
| 10 | $2,270.09 | $316.95 | $1,953.15 | $346,909.13 |
| 11 | $2,270.09 | $318.73 | $1,951.36 | $346,590.40 |
| 12 | $2,270.09 | $320.52 | $1,949.57 | $346,269.88 |
Why extra payments matter
Early payments on a fixed loan are interest-heavy.
When you pay extra toward principal, you shrink the balance immediately. That lowers future interest charges because interest is calculated on a smaller remaining balance.
Even modest extra payments can shave months or years off a longer loan term.