$150,000 Mortgage at 8% for 15 Years

A $150,000 mortgage at 8% over 15 years has a monthly principal + interest payment of $1,433. You'll pay $108,026 in total interest, bringing total loan cost to $258,026.

Estimated monthly payment
$1,746
Principal + interest
$1,433
Property tax
$188
Home insurance
$125
PMI
$0
HOA
$0
Total monthly
$1,746
1st month interest
$1,000
1st month principal
$433
Total interest
$108,026
Balance after 1 year
$144,603
Balance after 5 years
$118,149
Total cost (P+I)
$258,026

Amortization (first 10 years)

YearPrincipalInterestBalance
1$5,397$11,805$144,603
2$5,845$11,357$138,759
3$6,330$10,872$132,429
4$6,855$10,347$125,574
5$7,424$9,778$118,149
6$8,040$9,161$110,109
7$8,708$8,494$101,401
8$9,430$7,771$91,971
9$10,213$6,989$81,758
10$11,061$6,141$70,697

15-year vs 30-year

TermMonthly P+ITotal interestTotal cost
15 years$1,433$108,026$258,026
30 years$1,101$246,233$396,233

Choosing 15 years over 30 saves about $138,207 in interest at this rate and loan amount.

Extra payments

Payment breakdown

Monthly P+I
$1,433
Total payments
180
Total interest
$108,026
Total cost (P+I only)
$258,026
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Last updated: 2026