$100,000 Mortgage at 5.5% for 20 Years

A $100,000 mortgage at 5.5% over 20 years has a monthly principal + interest payment of $688. You'll pay $65,093 in total interest, bringing total loan cost to $165,093.

Estimated monthly payment
$938
Principal + interest
$688
Property tax
$125
Home insurance
$125
PMI
$0
HOA
$0
Total monthly
$938
1st month interest
$458
1st month principal
$230
Total interest
$65,093
Balance after 1 year
$97,175
Balance after 5 years
$84,188
Total cost (P+I)
$165,093

Amortization (first 10 years)

YearPrincipalInterestBalance
1$2,825$5,429$97,175
2$2,985$5,270$94,190
3$3,153$5,102$91,037
4$3,331$4,924$87,707
5$3,519$4,736$84,188
6$3,717$4,538$80,471
7$3,927$4,328$76,544
8$4,148$4,106$72,396
9$4,382$3,872$68,014
10$4,629$3,625$63,384

15-year vs 30-year

TermMonthly P+ITotal interestTotal cost
15 years$817$47,075$147,075
30 years$568$104,404$204,404

Choosing 15 years over 30 saves about $57,329 in interest at this rate and loan amount.

Extra payments

Payment breakdown

Monthly P+I
$688
Total payments
240
Total interest
$65,093
Total cost (P+I only)
$165,093
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Last updated: 2026