$150,000 Mortgage at 8% for 20 Years
A $150,000 mortgage at 8% over 20 years has a monthly principal + interest payment of $1,255. You'll pay $151,118 in total interest, bringing total loan cost to $301,118.
Estimated monthly payment
$1,567
Principal + interest
$1,255
Property tax
$188
Home insurance
$125
PMI
$0
HOA
$0
Total monthly
$1,567
1st month interest
$1,000
1st month principal
$255
Total interest
$151,118
Balance after 1 year
$146,830
Balance after 5 years
$131,288
Total cost (P+I)
$301,118
Amortization (first 10 years)
| Year | Principal | Interest | Balance |
|---|---|---|---|
| 1 | $3,170 | $11,885 | $146,830 |
| 2 | $3,434 | $11,622 | $143,396 |
| 3 | $3,719 | $11,337 | $139,677 |
| 4 | $4,027 | $11,029 | $135,650 |
| 5 | $4,362 | $10,694 | $131,288 |
| 6 | $4,724 | $10,332 | $126,565 |
| 7 | $5,116 | $9,940 | $121,449 |
| 8 | $5,540 | $9,516 | $115,909 |
| 9 | $6,000 | $9,056 | $109,909 |
| 10 | $6,498 | $8,558 | $103,411 |
15-year vs 30-year
| Term | Monthly P+I | Total interest | Total cost |
|---|---|---|---|
| 15 years | $1,433 | $108,026 | $258,026 |
| 30 years | $1,101 | $246,233 | $396,233 |
Choosing 15 years over 30 saves about $138,207 in interest at this rate and loan amount.
Extra payments
Payment breakdown
Monthly P+I
$1,255
Total payments
240
Total interest
$151,118
Total cost (P+I only)
$301,118
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$1,046/mo
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$1,464/mo
$100,000 · 8% · 20 yr
$836/mo
$200,000 · 8% · 20 yr
$1,673/mo
$150,000 · 7.5% · 20 yr
$1,208/mo
$150,000 · 8.5% · 20 yr
$1,302/mo
$150,000 · 7% · 20 yr
$1,163/mo
$150,000 · 9% · 20 yr
$1,350/mo
$150,000 · 8% · 15 yr
$1,433/mo
$150,000 · 8% · 30 yr
$1,101/mo
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Last updated: 2026