Mortgage payments2 min read · Updated October 19, 2026
$300,000 mortgage payment: monthly cost at 5.5% to 7.5%
Monthly principal and interest on a $300,000 mortgage over 30 and 15 years at rates from 5.5% to 7.5%, with the total interest.
Monthly payment by rate
| Rate | 30 years / 15 years |
| 5.5% | $1,703 / $2,451 |
| 6% | $1,799 / $2,532 |
| 6.5% | $1,896 / $2,613 |
| 7% | $1,996 / $2,696 |
| 7.5% | $2,098 / $2,781 |
Principal and interest only, on the full $300,000.
Total interest
At 6.5% over 30 years you pay about $382,633 in interest on $300,000. Over 15 years it is about $170,398.
What else is in your payment
Most lenders add property tax and homeowners insurance to your payment through an escrow account. If your down payment is under 20%, expect mortgage insurance too. Your Loan Estimate shows the full monthly cost.
Common questions
What is the monthly payment on a $300,000 mortgage?
At 6.5% over 30 years, principal and interest is about $1,896. Taxes and insurance are extra.
Is a 15-year mortgage better than 30?
It costs more each month and much less in interest. A 30-year loan keeps the payment lower and gives room to pay extra when you choose.
What rate should I use?
Use the rate on your Loan Estimate or current lender quotes. The table shows five rates so you can compare.