The short answer: at a 6.5% rate, a $700,000 30-year fixed mortgage costs $4,424.48 a month in principal and interest; at 7%, $4,657.12. On a 15-year term at 6.5% the payment is $6,097.75. 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% | $3,757.75 | $4,619.69 | $5,535.56 |
| 5.25% | $3,865.43 | $4,716.91 | $5,627.14 |
| 5.50% | $3,974.52 | $4,815.21 | $5,719.58 |
| 5.75% | $4,085.01 | $4,914.58 | $5,812.87 |
| 6.00% | $4,196.85 | $5,015.02 | $5,907.00 |
| 6.25% | $4,310.02 | $5,116.50 | $6,001.96 |
| 6.50% | $4,424.48 | $5,219.01 | $6,097.75 |
| 6.75% | $4,540.19 | $5,322.55 | $6,194.37 |
| 7.00% | $4,657.12 | $5,427.09 | $6,291.80 |
| 7.25% | $4,775.23 | $5,532.63 | $6,390.04 |
| 7.50% | $4,894.50 | $5,639.15 | $6,489.09 |
At 6.5%, interest alone on $700,000 runs about $3,791.67 per month — roughly $124.66 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 $700,000 loan buys about $875,000 of house; with 5% down, about $736,842. Enter your own down payment in the payment calculator and the price, loan and LTV solve automatically.