CalculynWhat is the monthly payment on a $100k mortgage?
At a 6.5% interest rate on a 30-year fixed loan, a $100,000 mortgage costs about $632 a month in principal and interest. Property tax, insurance and PMI usually add more on top.
Monthly payment by rate
Principal and interest only. Example rates for 2026, not a quote.
| Rate | 30-year | 20-year | 15-year |
|---|---|---|---|
| 5.5% | $568 | $688 | $817 |
| 6% | $600 | $716 | $844 |
| 6.5% | $632 | $746 | $871 |
| 7% | $665 | $775 | $899 |
| 7.5% | $699 | $806 | $927 |
Total interest paid
| Rate | 30-year total interest | 15-year total interest |
|---|---|---|
| 5.5% | $104,404 | $47,075 |
| 6% | $115,838 | $51,894 |
| 6.5% | $127,544 | $56,799 |
| 7% | $139,509 | $61,789 |
| 7.5% | $151,717 | $66,862 |
Income needed
A common guideline keeps housing costs under 28% of gross monthly income. At 6.5% over 30 years, a $100,000 loan suggests an income of roughly $33,861 a year, assuming taxes and insurance add about 25% to the payment.
How it's calculated
Monthly payment = P × r ÷ (1 − (1 + r)^−n), where P is the loan amount, r the monthly rate (annual rate ÷ 12) and n the number of monthly payments.
Change the numbers →
Open the Mortgage Calculator with these values filled in.
These figures are educational estimates, not financial advice.
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