$400,000 loan: monthly payment by rate
| Rate | 30-year | 15-year | Total interest (30y) |
|---|---|---|---|
| 5% | $2,147.29 | $3,163.17 | $373,023 |
| 5.5% | $2,271.16 | $3,268.33 | $417,616 |
| 6% | $2,398.20 | $3,375.43 | $463,353 |
| 6.5% | $2,528.27 | $3,484.43 | $510,178 |
| 7% | $2,661.21 | $3,595.31 | $558,036 |
| 7.5% | $2,796.86 | $3,708.05 | $606,869 |
| 8% | $2,935.06 | $3,822.61 | $656,621 |
Worked example
At 6.5% for 30 years, r = 6.5 ÷ 12 ÷ 100 = 0.0054167 and n = 360, so the payment is $2,528.27 a month and you would pay $510,178 in interest over the loan. A 15-year term raises the payment to $3,484.43 but cuts interest to $227,197, saving $282,981.
Buying a $400,000 house vs borrowing $400,000
If $400,000 is the price and you put 20% down, you borrow $320,000: $2,022.62 a month at 6.5% (30 years). Borrowing $400,000 with 20% down means a home price of about $500,000.
Under the traditional 28% guideline (housing cost ≤ 28% of gross income), a $2,528.27 principal-and-interest payment alone suggests a gross income of about $108,355 a year; taxes and insurance push that higher.
Rates in the tables are a range for comparison, not current market quotes. Payments are principal and interest only unless stated.
Related
Frequently asked questions
What is the monthly payment on a $400,000 mortgage?
$2,528.27 at 6.5% for 30 years, or $3,484.43 for 15 years (principal and interest).
How much interest on a $400,000 mortgage?
About $510,178 over 30 years at 6.5%.
What income do I need for a $400,000 mortgage?
Roughly $108,355+ a year under the 28% guideline, before taxes and insurance.