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Amortization Calculator

Break any loan into a payment-by-payment schedule of principal and interest.

Loan details
$
yrs
%

Monthly payment

$1,580.17

Total interest

$318,861

Total paid

$568,861

Principal vs. interest by year
Schedule
YearPrincipalInterestBalance
1$2,794$16,168$247,206
2$2,981$15,981$244,224
3$3,181$15,781$241,043
4$3,394$15,568$237,649
5$3,621$15,341$234,027
6$3,864$15,098$230,163
7$4,123$14,839$226,041
8$4,399$14,563$221,642
9$4,694$14,269$216,948
10$5,008$13,954$211,940
11$5,343$13,619$206,597
12$5,701$13,261$200,896
13$6,083$12,879$194,813
14$6,490$12,472$188,323
15$6,925$12,037$181,398
16$7,389$11,573$174,009
17$7,884$11,078$166,126
18$8,412$10,551$157,714
19$8,975$9,987$148,739
20$9,576$9,386$139,163
21$10,217$8,745$128,946
22$10,902$8,061$118,044
23$11,632$7,330$106,413
24$12,411$6,551$94,002
25$13,242$5,720$80,760
26$14,129$4,833$66,632
27$15,075$3,887$51,557
28$16,084$2,878$35,473
29$17,162$1,800$18,311
30$18,311$651$0

Reading an amortization schedule

Every fixed payment splits into interest (the balance times the monthly rate) and principal (the rest). The split shifts steadily: on a 30-year loan at 6.5%, the first payment is roughly three-quarters interest, while the last is nearly all principal. The crossover — where payments become majority-principal — often arrives past the loan's halfway point.

Why this table matters

The schedule shows exactly how much equity each year builds and what refinancing or extra payments would work against. Lenders publish the same table at closing; running your own numbers first means no surprises at the table.

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