$900,000 Mortgage at 3% for 20 Years
A $900,000 mortgage at 3% over 20 years has a monthly principal + interest payment of $4,991. You'll pay $297,931 in total interest, bringing total loan cost to $1,197,931.
Estimated monthly payment
$6,241
Principal + interest
$4,991
Property tax
$1,125
Home insurance
$125
PMI
$0
HOA
$0
Total monthly
$6,241
1st month interest
$2,250
1st month principal
$2,741
Total interest
$297,931
Balance after 1 year
$866,647
Balance after 5 years
$722,779
Total cost (P+I)
$1,197,931
Amortization (first 10 years)
| Year | Principal | Interest | Balance |
|---|---|---|---|
| 1 | $33,353 | $26,544 | $866,647 |
| 2 | $34,367 | $25,529 | $832,280 |
| 3 | $35,412 | $24,484 | $796,868 |
| 4 | $36,490 | $23,407 | $760,378 |
| 5 | $37,599 | $22,297 | $722,779 |
| 6 | $38,743 | $21,154 | $684,036 |
| 7 | $39,921 | $19,975 | $644,114 |
| 8 | $41,136 | $18,761 | $602,979 |
| 9 | $42,387 | $17,510 | $560,592 |
| 10 | $43,676 | $16,220 | $516,916 |
15-year vs 30-year
| Term | Monthly P+I | Total interest | Total cost |
|---|---|---|---|
| 15 years | $6,215 | $218,742 | $1,118,742 |
| 30 years | $3,794 | $465,997 | $1,365,997 |
Choosing 15 years over 30 saves about $247,255 in interest at this rate and loan amount.
Extra payments
Payment breakdown
Monthly P+I
$4,991
Total payments
240
Total interest
$297,931
Total cost (P+I only)
$1,197,931
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Last updated: 2026