$900,000 Mortgage at 8% for 20 Years
A $900,000 mortgage at 8% over 20 years has a monthly principal + interest payment of $7,528. You'll pay $906,711 in total interest, bringing total loan cost to $1,806,711.
Estimated monthly payment
$8,778
Principal + interest
$7,528
Property tax
$1,125
Home insurance
$125
PMI
$0
HOA
$0
Total monthly
$8,778
1st month interest
$6,000
1st month principal
$1,528
Total interest
$906,711
Balance after 1 year
$880,977
Balance after 5 years
$787,730
Total cost (P+I)
$1,806,711
Amortization (first 10 years)
| Year | Principal | Interest | Balance |
|---|---|---|---|
| 1 | $19,023 | $71,313 | $880,977 |
| 2 | $20,602 | $69,734 | $860,375 |
| 3 | $22,312 | $68,024 | $838,063 |
| 4 | $24,164 | $66,172 | $813,900 |
| 5 | $26,169 | $64,166 | $787,730 |
| 6 | $28,341 | $61,994 | $759,389 |
| 7 | $30,694 | $59,642 | $728,695 |
| 8 | $33,241 | $57,094 | $695,454 |
| 9 | $36,000 | $54,335 | $659,454 |
| 10 | $38,988 | $51,347 | $620,466 |
15-year vs 30-year
| Term | Monthly P+I | Total interest | Total cost |
|---|---|---|---|
| 15 years | $8,601 | $648,156 | $1,548,156 |
| 30 years | $6,604 | $1,477,397 | $2,377,397 |
Choosing 15 years over 30 saves about $829,241 in interest at this rate and loan amount.
Extra payments
Payment breakdown
Monthly P+I
$7,528
Total payments
240
Total interest
$906,711
Total cost (P+I only)
$1,806,711
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Nearby scenarios
$850,000 · 8% · 20 yr
$7,110/mo
$950,000 · 8% · 20 yr
$7,946/mo
$800,000 · 8% · 20 yr
$6,692/mo
$1,000,000 · 8% · 20 yr
$8,364/mo
$900,000 · 7.5% · 20 yr
$7,250/mo
$900,000 · 8.5% · 20 yr
$7,810/mo
$900,000 · 7% · 20 yr
$6,978/mo
$900,000 · 9% · 20 yr
$8,098/mo
$900,000 · 8% · 15 yr
$8,601/mo
$900,000 · 8% · 30 yr
$6,604/mo
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Last updated: 2026