// pre-computed reference
30-year mortgage at 7.0%: total interest by loan amount
Exact principal-and-interest figures for a fixed-rate 30-year mortgage at
7.0%, computed with the standard amortization formula. For your own numbers, use the
interactive calculator.
| Loan amount | Monthly P&I | Total interest |
Total paid | Interest % of loan |
|---|
| $100,000 | $665 | $139,511 | $239,511 | 140% |
| $200,000 | $1,331 | $279,022 | $479,022 | 140% |
| $300,000 | $1,996 | $418,524 | $718,524 | 140% |
| $400,000 | $2,661 | $558,036 | $958,036 | 140% |
| $500,000 | $3,327 | $697,547 | $1,197,547 | 140% |
At 7.0% over 30 years, every dollar borrowed costs about
140 cents in interest. A 30-year term reaches the principal-over-interest crossover late — most early payments service interest, which is exactly why extra principal payments are so effective on it.
See the term comparison or the
extra payment calculator to shrink these numbers.
30-year at other rates: 4.0% · 4.5% · 5.0% · 5.5% · 6.0% · 6.5% · 7.5% · 8.0%
7.0% at other terms: 10-year · 15-year · 20-year · 25-year
Frequently asked questions
How much interest on a $400,000 mortgage at 7.0% for 30 years?
Total interest is about $558,036, with a monthly principal-and-interest payment of $2,661. That's 140% of the amount borrowed, before taxes and insurance.
Is 7.0% a good rate for a 30-year mortgage?
Rates move with the market and your credit profile; compare current quotes from several lenders. Whatever your rate, the table above shows what it costs in total interest.
How can I pay less than $558,036 in interest?
Pay extra toward principal, choose a shorter term, or refinance if rates drop. Use the extra payment calculator to see your exact savings.
How is the 30-year payment at 7.0% calculated?
With the standard amortization formula — P·r(1+r)ⁿ/((1+r)ⁿ−1) — over 360 monthly payments, computed to the cent. The full formula and rounding rules are on our methodology page.