Mortgage Payment on a $400K House
Wondering what a $400,000 mortgage actually costs each month? This guide breaks down the real monthly payment at different rates, terms, and down payments — plus the property taxes and insurance most online calculators leave out.
Quick answer
With 20% down ($80K) on a $400K house at 6.5% over 30 years, the monthly principal & interest payment is about $2,022 — total monthly housing costs (PITI) typically run $2,500–$2,800.
Monthly payment on a $400,000 house at today's rates
Assuming a 20% down payment of $80,000, you'd borrow $320,000. At 6.5% over a 30-year fixed loan, principal and interest is about $2,022/month.
Add property taxes (typically 1.0–1.5% of home value annually), homeowners insurance ($1,200–$2,000/year), and any HOA dues. Full PITI usually lands $2,528–$2,831/month.
| Cost component | Monthly | Annual |
|---|---|---|
| Principal & interest | $2,022 | $24,264 |
| Property tax (1.1%) | $367 | $4,400 |
| Homeowners insurance | $125 | $1,500 |
| PMI (20% down) | $0 | $0 |
| Total PITI | $2,514 | $30,164 |
Assumes a $400,000 purchase price, 20% down ($320,000 loan) at 6.5% over 30 years, property tax at 1.1% and insurance at $1,500/year.
Maintenance is not part of PITI but is not optional either — budget roughly 1% of the home value, about $333/month on a $400,000 house. That makes the honest all-in cost closer to $2,850/month. Run your own tax rate and insurance quote through the mortgage calculator to replace these averages with real numbers.
How interest rate changes the payment
Even small rate changes have a big impact on a 30-year mortgage:
| Rate | Monthly P&I | Total interest over 30 years | vs 6.5% |
|---|---|---|---|
| 5.0% | $1,718 | $298,500 | −$304/mo |
| 5.5% | $1,817 | $334,200 | −$205/mo |
| 6.0% | $1,919 | $370,700 | −$103/mo |
| 6.5% | $2,022 | $407,900 | baseline |
| 7.0% | $2,129 | $446,400 | +$107/mo |
| 8.0% | $2,348 | $525,300 | +$326/mo |
$320,000 loan (20% down on a $400,000 house), 30-year fixed. Principal and interest only.
A 1% rate change moves the monthly payment by roughly $200–$300 on a loan this size — and tens of thousands over the life of the loan.
Notice the total-interest column: at 6.5% you pay more in interest over 30 years than the house cost to build the loan on. That is normal amortization, not a mistake — see what loan amortization is for why the early years are so interest-heavy, and the mortgage payoff calculator for how much of it extra payments erase.
How down payment changes the payment
| Down payment | Cash needed | Loan amount | P&I | Est. PMI | Monthly P&I + PMI |
|---|---|---|---|---|---|
| 3% ($12,000) | $12,000 | $388,000 | $2,452 | $259 | $2,711 |
| 5% ($20,000) | $20,000 | $380,000 | $2,402 | $237 | $2,639 |
| 10% ($40,000) | $40,000 | $360,000 | $2,275 | $180 | $2,455 |
| 20% ($80,000) | $80,000 | $320,000 | $2,022 | $0 | $2,022 |
$400,000 house at 6.5% over 30 years. PMI estimated at 0.5–0.8% of the loan per year and drops off at 20% equity.
PMI typically costs 0.3–1.2% of the loan amount per year and stays until you reach 20% equity. Putting more down can also unlock a slightly lower interest rate.
Going from 5% to 20% down saves about $617/month here — but it also means finding an extra $60,000 first, which for most buyers is three to five years of saving. Buying earlier with 5% down and removing PMI later once you hit 20% equity is often the better trade. Compare the tiers in the down payment calculator and set a savings date with the savings goal calculator.
30-year vs 15-year on a $400,000 home
A 15-year loan has higher monthly payments but cuts total interest dramatically:
| Term | Rate | Monthly P&I | Total interest | Paid off |
|---|---|---|---|---|
| 30-year fixed | 6.5% | $2,022 | $407,920 | Year 30 |
| 30-year + $300/mo extra | 6.5% | $2,322 | $286,000 | ~Year 22 |
| 20-year fixed | 6.25% | $2,339 | $241,400 | Year 20 |
| 15-year fixed | 6.0% | $2,700 | $166,086 | Year 15 |
$320,000 loan on a $400,000 house with 20% down.
If you can comfortably afford the higher monthly payment, a 15-year loan saves enormous interest.
The middle row is the compromise most buyers actually use: keep the flexibility of a 30-year required payment, then add extra principal voluntarily. You capture most of the interest saving without locking yourself into a payment you cannot pause. Model it in the mortgage payoff calculator, or read 30-year vs 15-year mortgage for the full comparison.
What income do you need to afford this?
Using the 28% rule, full PITI of $2,629/month requires gross monthly income of about $9,388 — or roughly $113,000/year.
Households making less can still buy a $400,000 home, but housing will eat a larger share of income — leaving less for savings and other goals.
| Household income | PITI as % of gross | Verdict |
|---|---|---|
| $90,000 | 35% | Stretched — little room to save |
| $105,000 | 30% | Workable with no other debt |
| $113,000 | 28% | The classic comfort threshold |
| $130,000 | 24% | Comfortable, room for retirement saving |
| $150,000 | 21% | Easy, even with a car loan |
Share of gross income consumed by a $2,629/month PITI payment.
Check where you land with the affordability calculator, or see the price bands each salary supports in how much house you can afford by salary.
Hidden costs to plan for
- Closing costs: 2–5% of loan amount, paid at signing
- Property taxes: 1.0–1.5% of home value annually
- Homeowners insurance: $1,200–$2,000/year
- PMI (if <20% down): 0.3–1.2% of loan/year
- Maintenance: budget ~1% of home value per year
- HOA dues (if applicable): $200–$600/month
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Frequently Asked Questions
What is the monthly payment on a $400,000 mortgage?
With 20% down at 6.5% over 30 years, principal and interest is about $2,022/month. Full PITI with taxes and insurance typically runs $2,528–$2,831/month.
How much do I need to put down on a $400K house?
Conventional loans allow as little as 3–5% down ($12,000–$20,000). 20% ($80,000) avoids PMI and lowers your monthly payment.
What credit score do I need?
620 is the conventional loan minimum, but 740+ gets you the best rates. FHA loans go down to 580 with 3.5% down.
What's a good interest rate today?
As of 2026, 30-year conventional mortgage rates typically range from 6.0% to 7.0% depending on credit, down payment, and loan type. Always shop at least 3 lenders.
Can I afford this on my current income?
Use the affordability calculator below — it factors in your debts, deposit, and credit to show your comfortable price range.
Should I choose a 15-year or 30-year loan?
30-year loans give flexibility (lower required payment) but cost much more in interest. If you can comfortably afford the 15-year payment, it usually saves $100K+ over the life of the loan.
How much is a $400,000 mortgage per month with no down payment?
A full $400,000 loan at 6.5% over 30 years is about $2,528/month in principal and interest, plus roughly $490 in taxes and insurance and $200–$270 in PMI or a VA funding fee — call it $3,200/month all in. Zero-down options are effectively limited to VA and USDA loans.
How much total interest will I pay on a $400K house?
On a $320,000 loan at 6.5% over the full 30 years, about $407,900 — more than the loan itself. Adding $300/month to principal cuts that to roughly $286,000 and clears the loan around year 22.
How much do I need to earn to buy a $400,000 house?
About $113,000 of household income keeps a $2,629 PITI payment at the 28% comfort threshold. Lenders will often approve at $90,000–$95,000, but housing then eats 35% of gross income, which leaves very little for retirement saving or repairs.
How much are closing costs on a $400,000 house?
Typically 2–5% of the loan amount — roughly $6,400 to $16,000 on a $320,000 loan. That is separate from your down payment, so budget for both before setting a purchase date.