$125,000 Mortgage at 3% for 20 Years

A $125,000 mortgage at 3% over 20 years has a monthly principal + interest payment of $693. You'll pay $41,379 in total interest, bringing total loan cost to $166,379.

Estimated monthly payment
$974
Principal + interest
$693
Property tax
$156
Home insurance
$125
PMI
$0
HOA
$0
Total monthly
$974
1st month interest
$313
1st month principal
$381
Total interest
$41,379
Balance after 1 year
$120,368
Balance after 5 years
$100,386
Total cost (P+I)
$166,379

Amortization (first 10 years)

YearPrincipalInterestBalance
1$4,632$3,687$120,368
2$4,773$3,546$115,594
3$4,918$3,401$110,676
4$5,068$3,251$105,608
5$5,222$3,097$100,386
6$5,381$2,938$95,005
7$5,545$2,774$89,460
8$5,713$2,606$83,747
9$5,887$2,432$77,860
10$6,066$2,253$71,794

15-year vs 30-year

TermMonthly P+ITotal interestTotal cost
15 years$863$30,381$155,381
30 years$527$64,722$189,722

Choosing 15 years over 30 saves about $34,341 in interest at this rate and loan amount.

Extra payments

Payment breakdown

Monthly P+I
$693
Total payments
240
Total interest
$41,379
Total cost (P+I only)
$166,379
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Last updated: 2026