$100,000 Mortgage at 5% for 15 Years

A $100,000 mortgage at 5% over 15 years has a monthly principal + interest payment of $791. You'll pay $42,343 in total interest, bringing total loan cost to $142,343.

Estimated monthly payment
$1,041
Principal + interest
$791
Property tax
$125
Home insurance
$125
PMI
$0
HOA
$0
Total monthly
$1,041
1st month interest
$417
1st month principal
$374
Total interest
$42,343
Balance after 1 year
$95,406
Balance after 5 years
$74,557
Total cost (P+I)
$142,343

Amortization (first 10 years)

YearPrincipalInterestBalance
1$4,594$4,896$95,406
2$4,829$4,661$90,577
3$5,076$4,414$85,501
4$5,336$4,154$80,166
5$5,609$3,881$74,557
6$5,896$3,594$68,662
7$6,197$3,292$62,464
8$6,514$2,975$55,950
9$6,848$2,642$49,103
10$7,198$2,292$41,905

15-year vs 30-year

TermMonthly P+ITotal interestTotal cost
15 years$791$42,343$142,343
30 years$537$93,256$193,256

Choosing 15 years over 30 saves about $50,913 in interest at this rate and loan amount.

Extra payments

Payment breakdown

Monthly P+I
$791
Total payments
180
Total interest
$42,343
Total cost (P+I only)
$142,343
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Last updated: 2026