$1,000,000 Mortgage at 8.5% for 20 Years

A $1,000,000 mortgage at 8.5% over 20 years has a monthly principal + interest payment of $8,678. You'll pay $1,082,776 in total interest, bringing total loan cost to $2,082,776.

Estimated monthly payment
$10,053
Principal + interest
$8,678
Property tax
$1,250
Home insurance
$125
PMI
$0
HOA
$0
Total monthly
$10,053
1st month interest
$7,083
1st month principal
$1,595
Total interest
$1,082,776
Balance after 1 year
$980,098
Balance after 5 years
$881,272
Total cost (P+I)
$2,082,776

Amortization (first 10 years)

YearPrincipalInterestBalance
1$19,902$84,236$980,098
2$21,661$82,477$958,436
3$23,576$80,563$934,860
4$25,660$78,479$909,200
5$27,928$76,211$881,272
6$30,397$73,742$850,875
7$33,084$71,055$817,791
8$36,008$68,131$781,784
9$39,191$64,948$742,593
10$42,655$61,484$699,938

15-year vs 30-year

TermMonthly P+ITotal interestTotal cost
15 years$9,847$772,531$1,772,531
30 years$7,689$1,768,089$2,768,089

Choosing 15 years over 30 saves about $995,557 in interest at this rate and loan amount.

Extra payments

Payment breakdown

Monthly P+I
$8,678
Total payments
240
Total interest
$1,082,776
Total cost (P+I only)
$2,082,776
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Last updated: 2026