Mortgage on a $400,000 home (2026)
Monthly payment with 20% down: $2,118/mo P&I, or about $2,685/mo all-in with taxes and insurance. At 6.95% (national average, 30-year fixed).
Monthly payment by down payment
| Scenario | Down payment | P&I (30yr) | PMI | All-in/mo |
|---|---|---|---|---|
| 20% down (no PMI) | $80,000 | $2,118 | — | $2,685 |
| 10% down | $40,000 | $2,383 | $255 | $3,205 |
| 5% down (FHA) | $20,000 | $2,515 | $269 | $3,351 |
Taxes estimated at 1.1% annually · Insurance at 0.6% · Rate: 6.95%
Income needed to afford a $400,000 home
Can you afford a $400,000 house?
A $400,000 home at today’s 6.95% average rate requires $2,118/month in principal and interest with 20% down ($80,000). That translates to needing roughly $115K in gross annual income to stay within the conventional 28% housing expense ratio.
The difference between 5% and 20% down on a $400,000 home is significant: a 5% down payment ($20,000) adds PMI of about $269/month until you reach 20% equity, and adds $82,920 in total interest over the life of the loan. If you can afford the larger down payment, the math strongly favors it.
On a 15-year loan, the monthly P&I payment jumps to $2,867 — $749 more per month than the 30-year option — but you save $246,420 in total interest and own the home outright in half the time.
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