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Amortization Calculator

See how each payment splits between interest and principal, and how extra payments shorten your loan.

$
years
months
%

Annual rate. 0% is allowed.

The first payment is due one month after this date.

$

Optional. Goes straight to principal.

Monthly pay

$1,529.99

Total of 180 payments
$275,397.58
Total interest
$75,397.58
Final payment
$1,529.11
Payoff date
Nov 2041
Principal vs. interest
  • Principal 72.6%
  • Interest 27.4%
Remaining balance over time
015y200K

Results are estimates and not financial advice.

Amortization schedule

YearInterestPrincipalEnding balance
2026$750.00$779.99$199,220.01
2027$8,768.69$9,591.19$189,628.82
2028$8,328.08$10,031.80$179,597.02
2029$7,867.21$10,492.67$169,104.35
2030$7,385.18$10,974.70$158,129.65
2031$6,881.01$11,478.87$146,650.78
2032$6,353.67$12,006.21$134,644.57
2033$5,802.09$12,557.79$122,086.78
2034$5,225.19$13,134.69$108,952.09
2035$4,621.79$13,738.09$95,214.00
2036$3,990.66$14,369.22$80,844.78
2037$3,330.55$15,029.33$65,815.45
2038$2,640.11$15,719.77$50,095.68
2039$1,917.94$16,441.94$33,653.74
2040$1,162.60$17,197.28$16,456.46
2041$372.55$16,456.46$0.00

About the amortization calculator

Amortization means paying a debt off in scheduled installments. With a fixed-rate loan the installment never changes, but its makeup does: at first most of it is interest, and over time more and more goes to principal.

The schedule shows every payment so you can see exactly how much interest you pay in each year. Adding an extra monthly payment reduces the balance faster, so later months have less interest, the loan ends sooner and you save interest overall.

Amounts are rounded to the cent each month; any rounding difference is added to the last payment so the balance ends at exactly $0.00.

Formula

  • Interest for the month = Balance × (Annual rate ÷ 12)
  • Principal for the month = Payment − Interest
  • New balance = Balance − Principal
  • Payment M = L × r ÷ (1 − (1 + r)^−n)

Example

A $200,000 loan at 4.5% over 15 years has a payment of $1,529.99. In the first month the interest is $200,000 × 0.00375 = $750.00, so $779.99 goes to principal and the balance falls to $199,220.01.