$300,000 Mortgage at 6% for 30 Years
A $300,000 mortgage at 6% over 30 years has a monthly principal + interest payment of $1,799. You'll pay $347,515 in total interest, bringing total loan cost to $647,515.
Estimated monthly payment
$2,299
Principal + interest
$1,799
Property tax
$375
Home insurance
$125
PMI
$0
HOA
$0
Total monthly
$2,299
1st month interest
$1,500
1st month principal
$299
Total interest
$347,515
Balance after 1 year
$296,316
Balance after 5 years
$279,163
Total cost (P+I)
$647,515
Amortization (first 10 years)
| Year | Principal | Interest | Balance |
|---|---|---|---|
| 1 | $3,684 | $17,900 | $296,316 |
| 2 | $3,911 | $17,673 | $292,405 |
| 3 | $4,152 | $17,431 | $288,252 |
| 4 | $4,409 | $17,175 | $283,844 |
| 5 | $4,681 | $16,903 | $279,163 |
| 6 | $4,969 | $16,615 | $274,194 |
| 7 | $5,276 | $16,308 | $268,918 |
| 8 | $5,601 | $15,983 | $263,317 |
| 9 | $5,947 | $15,637 | $257,371 |
| 10 | $6,313 | $15,270 | $251,057 |
15-year vs 30-year
| Term | Monthly P+I | Total interest | Total cost |
|---|---|---|---|
| 15 years | $2,532 | $155,683 | $455,683 |
| 30 years | $1,799 | $347,515 | $647,515 |
Choosing 15 years over 30 saves about $191,832 in interest at this rate and loan amount.
Extra payments
Payment breakdown
Monthly P+I
$1,799
Total payments
360
Total interest
$347,515
Total cost (P+I only)
$647,515
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Last updated: 2026