$1,000,000 Mortgage at 3% for 20 Years

A $1,000,000 mortgage at 3% over 20 years has a monthly principal + interest payment of $5,546. You'll pay $331,034 in total interest, bringing total loan cost to $1,331,034.

Estimated monthly payment
$6,921
Principal + interest
$5,546
Property tax
$1,250
Home insurance
$125
PMI
$0
HOA
$0
Total monthly
$6,921
1st month interest
$2,500
1st month principal
$3,046
Total interest
$331,034
Balance after 1 year
$962,941
Balance after 5 years
$803,088
Total cost (P+I)
$1,331,034

Amortization (first 10 years)

YearPrincipalInterestBalance
1$37,059$29,493$962,941
2$38,186$28,366$924,756
3$39,347$27,205$885,409
4$40,544$26,008$844,865
5$41,777$24,775$803,088
6$43,048$23,504$760,040
7$44,357$22,195$715,683
8$45,706$20,845$669,976
9$47,096$19,455$622,880
10$48,529$18,023$574,351

15-year vs 30-year

TermMonthly P+ITotal interestTotal cost
15 years$6,906$243,047$1,243,047
30 years$4,216$517,775$1,517,775

Choosing 15 years over 30 saves about $274,728 in interest at this rate and loan amount.

Extra payments

Payment breakdown

Monthly P+I
$5,546
Total payments
240
Total interest
$331,034
Total cost (P+I only)
$1,331,034
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Last updated: 2026