A $400,000 fixed-rate mortgage at 5% APR paid over 10 years costs $4,242.62 per month. Over the life of the loan you would pay $109,114 in interest — 27% of the amount borrowed.
The 5% rate on this page is 0.79 points below this week's national average of 5.79% for a 15-year fixed mortgage (Freddie Mac PMMS, July 2, 2026).
| Period | Principal paid | Interest paid | Balance |
|---|
| Scenario | Monthly | Total interest |
|---|---|---|
| $400,000 at 4% (10yr) | $4,049.81 | $85,977 |
| $400,000 at 4.25% (10yr) | $4,097.50 | $91,700 |
| $400,000 at 4.5% (10yr) | $4,145.54 | $97,464 |
| $400,000 at 4.75% (10yr) | $4,193.91 | $103,269 |
| $400,000 at 5% (10yr) ← this page | $4,242.62 | $109,114 |
| $400,000 at 5.25% (10yr) | $4,291.67 | $115,000 |
| $400,000 at 5.5% (10yr) | $4,341.05 | $120,926 |
| $400,000 at 5.75% (10yr) | $4,390.77 | $126,892 |
| $400,000 at 6% (10yr) | $4,440.82 | $132,898 |
| $400,000 at 6.25% (10yr) | $4,491.20 | $138,944 |
| $400,000 at 6.5% (10yr) | $4,541.92 | $145,030 |
| $400,000 at 6.75% (10yr) | $4,592.96 | $151,156 |
| $400,000 at 7% (10yr) | $4,644.34 | $157,321 |
| $400,000 at 7.25% (10yr) | $4,696.04 | $163,525 |
| $400,000 at 7.5% (10yr) | $4,748.07 | $169,768 |
| $400,000 at 7.75% (10yr) | $4,800.43 | $176,051 |
| $400,000 at 8% (10yr) | $4,853.10 | $182,372 |
| $400,000 at 8.5% (10yr) | $4,959.43 | $195,131 |
| $400,000 at 9% (10yr) | $5,067.03 | $208,044 |