How Much Income Do You Need to Purchase a $400,000 Home?
For a $400,000 home purchase, roughly $100,000 to $115,000 in annual household income is a useful starting point in the example below if your other qualifying monthly debts are around $500 to $1,000 and we use a 45% total debt-to-income ratio. It is not a universal minimum or an approval promise. Larger debt payments can push the income needed considerably higher.
As a mortgage broker serving the Kansas City area, my first response to this question is usually another question: “How much are you paying each month toward your other debts?”
Your income matters. So do your monthly debt payments, credit profile, down payment, and loan program. And there is another question that matters just as much: Would that mortgage payment fit comfortably into your life?
First, a $400,000 house or a $400,000 loan?
People often use these interchangeably, but they produce different payments. This article is about buying a $400,000 home with a relatively small down payment:
FHA, 3.5% down: $14,000 down and a $386,000 base loan, before financed upfront mortgage insurance.
Conventional, 3% down: $12,000 down and a $388,000 loan, if eligible for that program.
Conventional, 5% down: $20,000 down and a $380,000 loan.
Closing costs and prepaid expenses are additional. Your down payment is not your entire cash requirement. If you mean borrowing a full $400,000, the payment and income calculation would be higher with otherwise identical terms.
How lenders calculate the income you need
One of the main calculations lenders use is your debt-to-income ratio, commonly called DTI:
DTI = (full monthly housing payment + other qualifying monthly debt payments) ÷ gross monthly qualifying income × 100%.
Gross income means income before taxes and deductions. Qualifying income means the documented income the lender can actually use.
Your housing payment generally includes principal, interest, property taxes, homeowners insurance, mortgage insurance, and applicable HOA dues. Other qualifying debts commonly include car loans, credit card minimum payments, student loans, and personal loans. Certain obligations, such as child support, can also count even if they do not appear on your credit report. Student loans sometimes require a program-specific calculation rather than simply using the payment you currently make.
That is why looking at salary alone does not tell us enough.
What might the payment on a $400,000 home look like?
Let’s use an FHA example with these assumptions:
$400,000 purchase price and 3.5% down.
A 30-year fixed loan with 360 monthly principal-and-interest payments.
An illustrative 6.50% note interest rate.
Property taxes estimated at 1.125% of the purchase price annually.
Homeowners insurance estimated at 0.60% of the purchase price annually.
No HOA dues.
The interest rate is a calculation assumption, not a current rate quote or an offer of credit. It is the note rate, not an APR; APR would reflect applicable financing costs. Actual rates, taxes, insurance, fees, and approval depend on the borrower, property, and loan terms.
The FHA base loan would be $386,000. Financing the 1.75% upfront mortgage insurance premium adds $6,755, bringing the total starting loan balance to $392,755. For this example, the annual FHA mortgage insurance rate is 0.55%, collected monthly. See HUD’s mortgage insurance premium schedule.
Approximate monthly payment
Principal and interest: $2,482.
Property taxes: $375.
Homeowners insurance: $200.
FHA mortgage insurance: $177.
Estimated total housing payment: $3,234.
Figures are rounded. The monthly mortgage insurance estimate uses the base loan balance; the lender’s calculation may differ slightly, and the annual premium can change as the balance declines. Taxes and insurance can also change over time.
Notice that taxes and homeowners insurance alone add $575 a month. Those are two expenses I regularly see new buyers underestimate. These percentages are planning estimates, not tax rates or insurance quotes for every Kansas City property. We need to check the specific home and obtain an insurance quote before treating the payment as reliable.
How much income would that payment require?
Using the rounded $3,234 housing payment, here is how other monthly debts change the annual gross qualifying income needed:
$500 in other monthly debts: about $99,573 at 45% total DTI, or $89,616 at 50% total DTI.
$1,000 in other monthly debts: about $112,907 at 45% total DTI, or $101,616 at 50% total DTI.
$2,000 in other monthly debts: about $139,573 at 45% total DTI, or $125,616 at 50% total DTI.
$3,000 in other monthly debts: about $166,240 at 45% total DTI, or $149,616 at 50% total DTI.
These are illustrations of the math, not approval promises or recommended budgets. The ratios are comparison assumptions, not guaranteed eligibility for a particular loan program. Housing-only ratio requirements and the rest of the application can also affect approval.
For example, a $3,234 housing payment plus $1,000 in other monthly debt equals $4,234 in qualifying obligations. At 45% DTI, that requires approximately $9,409 in gross monthly qualifying income, or $112,907 annually. Change the debts, rate, taxes, or insurance, and the income calculation changes too.
Same income, very different buying power
Consider two households, each earning approximately $200,000 annually. This comparison illustrates a situation I see when helping buyers:
Lower-debt household: one $350 car payment, plus less than $500 in combined credit card and student loan payments. Total debt before housing: less than $850 a month.
Higher-debt household: $1,500 in car payments, plus $1,175 in credit card and student loan payments. Total debt before housing: $2,675 a month.
The second household has more than $1,825 in additional monthly debt payments. At the same income and total DTI limit, those payments leave more than $1,825 less room for housing. Both households earn good money. Their mortgage qualifications can still look very different.
Conventional versus FHA can change the answer
Credit scores and the overall financial picture help us determine which loan program makes sense. For conventional loans evaluated through Fannie Mae’s Desktop Underwriter, the maximum total DTI is 50%. That does not mean every borrower will receive approval at 50%; manually underwritten loans have lower limits. See Fannie Mae’s DTI guidance.
FHA automated underwriting can allow higher total debt ratios in some cases. That flexibility may help buyers whose debts make conventional qualification difficult, but approval depends on the complete application, underwriting findings, and lender requirements. A higher allowable ratio is not a target for your budget.
We also need to compare the payment, cash needed at closing, and mortgage insurance costs. Conventional PMI needs to be quoted for your particular credit profile and loan structure. FHA has upfront and ongoing mortgage insurance; with 3.5% down in this example, the annual premium generally lasts for the mortgage term unless the loan is paid off.
I also discuss how the financing may be received when making an offer. In my experience, some sellers view a conventional preapproval more favorably than an FHA preapproval. That does not make FHA a bad choice, but it is worth discussing with your real estate agent. The goal is financing that fits your qualifications and situation.
Paying off debt can help more than putting more money down
Buyers often assume a larger down payment is the best way to improve their qualifications. Sometimes paying off debt makes a bigger difference.
As a rule of thumb, an extra $1,000 down may reduce the mortgage payment by only around $6 to $7 a month, depending on the rate and loan structure. At the illustrative 6.50% rate over 30 years, borrowing $1,000 less reduces principal and interest by about $6.32 a month.
Now suppose paying off a $1,000 credit card balance eliminates a $25 monthly minimum payment. That could remove $25 from monthly debt obligations, making a larger difference in DTI. Fannie Mae explains how qualifying debts paid off by closing are treated in its debt payoff guidance.
The actual benefit depends on the account and loan program. Paying down part of a balance may not reduce the required payment as much as expected, and a larger down payment can sometimes improve mortgage insurance or loan pricing. We also need to preserve enough money for closing and emergencies. Before moving money around, have your lender compare the options.
Not every dollar you earn counts as qualifying income
You may earn enough in practice but have income we cannot fully use yet. Overtime, bonuses, and commissions require documentation and an evaluation of stability. Fannie Mae generally recommends a two-year history for these sources, although at least 12 months can sometimes be acceptable when positive factors support the shorter history. Its employment-related income standards and variable-income guidance explain the requirements.
If you just started receiving substantial overtime or commission, we may not be able to count all of it immediately. A new side business presents a similar issue. Self-employment generally requires an established history and tax documentation, with limited exceptions for shorter histories. Business revenue is not the same as qualifying personal income. See Fannie Mae’s self-employment guidance.
This is a good reason to talk with a lender early. You can find out what income is usable today and what documentation or additional history may help later.
The amount you qualify for is not necessarily the amount you should spend
Just because the guidelines or automated underwriting system say you qualify for a certain amount does not mean you should go that high.
When I start a conversation with buyers, I ask: “What are you paying now in rent or house payments?” Then: “Does that payment feel comfortable, too tight, or like you still have room to spend more each month?” I also ask whether they have discussed a monthly payment or purchase-price limit they do not want to exceed.
Those answers matter. A lender’s DTI calculation does not capture everything in your life: groceries, childcare, utilities, medical expenses, retirement savings, giving, travel, or home maintenance. And lenders generally use gross income. You pay bills with the money that actually reaches your bank account.
My opinion is straightforward: It is better to buy below your maximum and leave yourself room to live.
Your best next step: Write down where your money goes
Before focusing on an approval amount, sit down and list your monthly bills. Include debt payments and everyday spending that does not appear on a credit report. Review recent bank and credit card statements so you are working with actual spending rather than guesses.
Compare that total with your monthly take-home income. Consider what would change with homeownership, including utilities, maintenance, and savings for unexpected repairs. Most people have never done this exercise thoroughly. It can be eye-opening, and it gives us a better starting point than a salary figure alone.
If you do not know where to begin, I have budgeting tools that can help. We can also work through it together on an introductory call.
Several years ago, I was in that same spot myself. I have been in your shoes. I will not judge you, talk down to you, or make you feel like you are doing something wrong because you are still figuring it out. My job is to educate you, help you understand your options, and work with you toward the American Dream of homeownership, at a payment that fits your life.
Schedule an introductory conversation with Mike, or call or text 913-213-3335. Let’s start with your budget.
For more preparation, explore our mortgage calculator and homebuying mortgage roadmap.
Reviewed October 11, 2026. Examples are for education and planning. Loan eligibility, terms, and costs are subject to underwriting and program requirements.
