$100,000 Mortgage at 5% for 20 Years
A $100,000 mortgage at 5% over 20 years has a monthly principal + interest payment of $660. You'll pay $58,389 in total interest, bringing total loan cost to $158,389.
Estimated monthly payment
$910
Principal + interest
$660
Property tax
$125
Home insurance
$125
PMI
$0
HOA
$0
Total monthly
$910
1st month interest
$417
1st month principal
$243
Total interest
$58,389
Balance after 1 year
$97,013
Balance after 5 years
$83,455
Total cost (P+I)
$158,389
Amortization (first 10 years)
| Year | Principal | Interest | Balance |
|---|---|---|---|
| 1 | $2,987 | $4,932 | $97,013 |
| 2 | $3,140 | $4,779 | $93,873 |
| 3 | $3,301 | $4,619 | $90,572 |
| 4 | $3,470 | $4,450 | $87,102 |
| 5 | $3,647 | $4,272 | $83,455 |
| 6 | $3,834 | $4,086 | $79,621 |
| 7 | $4,030 | $3,890 | $75,591 |
| 8 | $4,236 | $3,683 | $71,355 |
| 9 | $4,453 | $3,467 | $66,902 |
| 10 | $4,681 | $3,239 | $62,222 |
15-year vs 30-year
| Term | Monthly P+I | Total interest | Total cost |
|---|---|---|---|
| 15 years | $791 | $42,343 | $142,343 |
| 30 years | $537 | $93,256 | $193,256 |
Choosing 15 years over 30 saves about $50,913 in interest at this rate and loan amount.
Extra payments
Payment breakdown
Monthly P+I
$660
Total payments
240
Total interest
$58,389
Total cost (P+I only)
$158,389
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Last updated: 2026