Mortgage Calculator

Monthly payment, total interest, and a year-by-year payoff schedule for a fixed-rate loan. Add an extra monthly principal payment to see how much time and interest it saves.

Monthly payment

$2,528.27

Principal & interest only — taxes and insurance not included.

Loan amount$400,000
Down payment$100,000
Monthly payment$2,528.27
Payoff time30y 0m
Total interest$510,178
Total paid$910,178
44% principal56% interest

Year by year

YearPrincipalInterestBalance
1$4,471$25,868$395,529
2$4,770$25,569$390,759
3$5,090$25,249$385,669
4$5,431$24,909$380,238
5$5,794$24,545$374,444
6$6,182$24,157$368,261
7$6,596$23,743$361,665
8$7,038$23,301$354,627
9$7,510$22,830$347,117
10$8,013$22,327$339,105
11$8,549$21,790$330,555
12$9,122$21,218$321,434
13$9,733$20,607$311,701
14$10,384$19,955$301,316
15$11,080$19,259$290,237
16$11,822$18,517$278,415
17$12,614$17,726$265,801
18$13,458$16,881$252,342
19$14,360$15,979$237,983
20$15,322$15,018$222,661
21$16,348$13,992$206,314
22$17,442$12,897$188,871
23$18,611$11,729$170,260
24$19,857$10,482$150,403
25$21,187$9,152$129,217
26$22,606$7,734$106,611
27$24,120$6,220$82,491
28$25,735$4,604$56,756
29$27,459$2,881$29,298
30$29,298$1,042$0

Common questions

How is the monthly mortgage payment calculated?

For a fixed-rate loan, the monthly payment is principal × r / (1 − (1 + r)^−n), where r is the monthly interest rate and n is the number of payments. Early payments are mostly interest; later ones are mostly principal.

Do extra principal payments really help?

Yes — every extra dollar goes straight to principal, which reduces the balance that future interest is charged on. Even $200 extra a month can shave years off a 30-year loan and tens of thousands in interest. Try it above.

Does this include property tax and insurance?

No — the payment shown is principal and interest only. Lenders usually quote PITI (principal, interest, tax, insurance); add your local property tax and homeowner's insurance for the full monthly figure.