$300,000 Mortgage at 4.5% for 15 Years
A $300,000 mortgage at 4.5% over 15 years has a monthly principal + interest payment of $2,295. You'll pay $113,096 in total interest, bringing total loan cost to $413,096.
Estimated monthly payment
$2,795
Principal + interest
$2,295
Property tax
$375
Home insurance
$125
PMI
$0
HOA
$0
Total monthly
$2,795
1st month interest
$1,125
1st month principal
$1,170
Total interest
$113,096
Balance after 1 year
$285,667
Balance after 5 years
$221,441
Total cost (P+I)
$413,096
Amortization (first 10 years)
| Year | Principal | Interest | Balance |
|---|---|---|---|
| 1 | $14,333 | $13,207 | $285,667 |
| 2 | $14,991 | $12,548 | $270,676 |
| 3 | $15,680 | $11,860 | $254,995 |
| 4 | $16,400 | $11,139 | $238,595 |
| 5 | $17,154 | $10,386 | $221,441 |
| 6 | $17,942 | $9,598 | $203,499 |
| 7 | $18,766 | $8,774 | $184,733 |
| 8 | $19,628 | $7,911 | $165,105 |
| 9 | $20,530 | $7,010 | $144,574 |
| 10 | $21,473 | $6,067 | $123,101 |
15-year vs 30-year
| Term | Monthly P+I | Total interest | Total cost |
|---|---|---|---|
| 15 years | $2,295 | $113,096 | $413,096 |
| 30 years | $1,520 | $247,220 | $547,220 |
Choosing 15 years over 30 saves about $134,124 in interest at this rate and loan amount.
Extra payments
Payment breakdown
Monthly P+I
$2,295
Total payments
180
Total interest
$113,096
Total cost (P+I only)
$413,096
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Last updated: 2026