Why shopping lenders pays here
Each quarter point is worth about $67.89 a month on $400,000, or $24,441 over 30 years. The CFPB recommends getting Loan Estimates from several lenders on the same day and comparing page 2, section A, the lender's own charges.
Two incomes, one debt ratio
The full payment near $3,285.29 needs about $140,798 of gross income under the 28% rule, which is above the household median in 51 states. Most buyers at this level combine two incomes. Then the 36% back-end ratio counts both people's car, student and card payments, so paying off a car loan before you apply can raise what you can borrow by tens of thousands of dollars.
Total cost over the loan
At 7.40%, 30 years of payments add up to about $997,027, of which $597,027 is interest. A 15-year loan at 6.71% cuts the interest to $235,539, but the payment rises to $3,530.77.
Payment by rate and term
| Rate | 15-year | 20-year | 30-year | 30-year total interest |
|---|---|---|---|---|
| 5.5% | $3,268.33 | $2,751.55 | $2,271.16 | $417,616 |
| 6% | $3,375.43 | $2,865.72 | $2,398.20 | $463,353 |
| 6.5% | $3,484.43 | $2,982.29 | $2,528.27 | $510,178 |
| 7% | $3,595.31 | $3,101.20 | $2,661.21 | $558,036 |
| 7.4% | $3,685.36 | $3,197.96 | $2,769.52 | $597,027 |
| 7.5% | $3,708.05 | $3,222.37 | $2,796.86 | $606,869 |
| 8% | $3,822.61 | $3,345.76 | $2,935.06 | $656,621 |
Equity built on $400,000 in the first 10 years
If you keep this loan ten years, you will have sent about $332,342 to the lender, of which $278,753 is interest and $53,589 principal, leaving $346,411. The five-year balance is $378,092. The 15-year version builds $220,451 of equity in the same decade.
FHA vs. conventional on a $500,000 home
A $500,000 home is above the median in most states, so lenders look closely at debt-to-income ratios. FHA allows higher ratios than many conventional programs, which can help a buyer with student loans or a car payment qualify, but the lifetime annual premium makes it an expensive way to borrow this much if you keep the loan long term. FHA figures use the 1.75% upfront premium, financed, and the 0.55% annual premium; PMI for 5% down uses 0.5%.
| Option | Down payment | Loan amount | Monthly payment incl. tax, insurance and MI | Income needed (28%) | Cash for down payment |
|---|---|---|---|---|---|
| Conventional, 20% down | $100,000 | $400,000 | $3,285.29 | $140,798 | $100,000 plus closing costs |
| Conventional, 5% down with PMI | $25,000 | $475,000 | $4,002.50 | $171,536 | $25,000 plus closing costs |
| FHA, 3.5% down | $17,500 | $490,944 | $4,136.12 | $177,262 | $17,500 plus closing costs |
Property taxes on a $500,000 home
A $500,000 home pays about $4,452 a year at the average 0.89% rate. The state ranking changes that to $9,600 in Illinois or $1,350 in Hawaii, which is $687.50 a month on top of the same principal and interest.
| State | Effective rate | Yearly tax | Monthly |
|---|---|---|---|
| Illinois | 1.92% | $9,600 | $800.00 |
| New Jersey | 1.89% | $9,450 | $787.50 |
| Connecticut | 1.66% | $8,300 | $691.67 |
| New Hampshire | 1.46% | $7,300 | $608.33 |
| New York | 1.45% | $7,250 | $604.17 |
Income needed for $400,000 at 28% and 36%
For $400,000, the income needed under the 28% rule ($140,798) is above the median household income in 51 of 51 states, so this loan size is often a two-income purchase. Lenders count only stable, documented income, so bonuses and overtime need a two-year history to count fully.
| Other monthly debts | Income needed (28% housing rule) | Income needed (36% total-debt rule) | Income that satisfies both |
|---|---|---|---|
| $0 | $140,798 | $109,510 | $140,798 |
| $300 | $140,798 | $119,510 | $140,798 |
| $600 | $140,798 | $129,510 | $140,798 |
| $1,000 | $140,798 | $142,843 | $142,843 |
By state
| State | With tax & insurance | Share of median income |
|---|---|---|
| Alabama | $3,086.69 | 55.57% |
| North Carolina | $3,178.02 | 51.56% |
| California | $3,203.27 | 38.38% |
| Florida | $3,313.60 | 51.15% |
| Ohio | $3,370.85 | 56.02% |
| New York | $3,523.77 | 49.27% |
| Texas | $3,554.02 | 53.50% |
| Illinois | $3,692.85 | 53.26% |
FAQ
What is the monthly payment on a $400,000 mortgage?
It is $2,769.52 a month over 30 years at 7.40%. A 15-year term at 6.71% raises that to $3,530.77 but saves most of the interest. Tax and insurance are not included.
What credit score do I need for a $400,000 loan?
Conventional loans generally start at 620, but pricing improves in steps up to about 780, and those steps are worth more on a large balance.
Other amounts: $200,000 · $250,000 · $300,000 · $350,000 · $500,000
Rates: Freddie Mac PMMS, week of October 15, 2026. Taxes, income: Census ACS 2024. Insurance: NAIC 2023.