$350,000 Mortgage at 4% for 15 Years
A $350,000 mortgage at 4% over 15 years has a monthly principal + interest payment of $2,589. You'll pay $116,003 in total interest, bringing total loan cost to $466,003.
Estimated monthly payment
$3,151
Principal + interest
$2,589
Property tax
$438
Home insurance
$125
PMI
$0
HOA
$0
Total monthly
$3,151
1st month interest
$1,167
1st month principal
$1,422
Total interest
$116,003
Balance after 1 year
$332,617
Balance after 5 years
$255,707
Total cost (P+I)
$466,003
Amortization (first 10 years)
| Year | Principal | Interest | Balance |
|---|---|---|---|
| 1 | $17,383 | $13,684 | $332,617 |
| 2 | $18,092 | $12,975 | $314,525 |
| 3 | $18,829 | $12,238 | $295,697 |
| 4 | $19,596 | $11,471 | $276,101 |
| 5 | $20,394 | $10,673 | $255,707 |
| 6 | $21,225 | $9,842 | $234,482 |
| 7 | $22,090 | $8,977 | $212,392 |
| 8 | $22,990 | $8,077 | $189,403 |
| 9 | $23,926 | $7,141 | $165,476 |
| 10 | $24,901 | $6,166 | $140,575 |
15-year vs 30-year
| Term | Monthly P+I | Total interest | Total cost |
|---|---|---|---|
| 15 years | $2,589 | $116,003 | $466,003 |
| 30 years | $1,671 | $251,543 | $601,543 |
Choosing 15 years over 30 saves about $135,540 in interest at this rate and loan amount.
Extra payments
Payment breakdown
Monthly P+I
$2,589
Total payments
180
Total interest
$116,003
Total cost (P+I only)
$466,003
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$2,404/mo
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$2,959/mo
$350,000 · 3.5% · 15 yr
$2,502/mo
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$2,677/mo
$350,000 · 3% · 15 yr
$2,417/mo
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$2,768/mo
$350,000 · 4% · 20 yr
$2,121/mo
$350,000 · 4% · 30 yr
$1,671/mo
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Last updated: 2026