The short answer: at a 6.5% rate, a $750,000 30-year fixed mortgage costs $4,740.51 a month in principal and interest; at 7%, $4,989.77. On a 15-year term at 6.5% the payment is $6,533.31. Taxes, insurance, HOA and mortgage insurance (if you put less than 20% down) come on top — open this loan in the full calculator to add them and see the complete amortization schedule.
| Rate | 30-year | 20-year | 15-year |
|---|---|---|---|
| 5.00% | $4,026.16 | $4,949.67 | $5,930.95 |
| 5.25% | $4,141.53 | $5,053.83 | $6,029.08 |
| 5.50% | $4,258.42 | $5,159.15 | $6,128.13 |
| 5.75% | $4,376.80 | $5,265.63 | $6,228.08 |
| 6.00% | $4,496.63 | $5,373.23 | $6,328.93 |
| 6.25% | $4,617.88 | $5,481.96 | $6,430.67 |
| 6.50% | $4,740.51 | $5,591.80 | $6,533.31 |
| 6.75% | $4,864.49 | $5,702.73 | $6,636.82 |
| 7.00% | $4,989.77 | $5,814.74 | $6,741.21 |
| 7.25% | $5,116.32 | $5,927.82 | $6,846.47 |
| 7.50% | $5,244.11 | $6,041.95 | $6,952.59 |
At 6.5%, interest alone on $750,000 runs about $4,062.50 per month — roughly $133.56 every day. That's the number amortization slowly kills: each payment shrinks the balance, so each month a little less goes to interest and a little more to principal. See the month-by-month schedule, or try our daily interest calculator for per-diem closing math.
Principal and interest is the floor, not the payment. A realistic budget adds property taxes, homeowners insurance, HOA dues, and — under 20% down — mortgage insurance, which our full calculator prices the way a lender does: FHA and USDA from the official tables, VA's funding fee, and conventional PMI by credit score.
A common guideline caps total housing costs near 28–36% of gross income, but real qualifying depends on your full debt picture, credit and loan program. Build the complete payment in the calculator, then ask a licensed professional — Phil answers questions free.
With 20% down, a $750,000 loan buys about $937,500 of house; with 5% down, about $789,474. Enter your own down payment in the payment calculator and the price, loan and LTV solve automatically.