How Much House Can I Afford on a $100K Salary? The Math Lenders Use
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On a $100,000 salary with no other debts, our example below supports a mortgage of roughly $250,000 to $350,000 at today's rates, but your real answer depends on your other debts, your down payment and your rate. Freddie Mac's 30-year fixed averaged 7.40% for the week of Oct. 8, 2026. At that rate, using common budget guidelines and the example costs below, $100,000 a year supports a loan of roughly $250,300 at the careful end and roughly $346,600 at the stretch end, if you have no other debts.
How do lenders figure out how much house you can afford?
Lenders start with your debt-to-income ratio, or DTI. The Consumer Financial Protection Bureau (CFPB) defines it this way: ""Your debt-to-income ratio (DTI) is all your monthly debt payments divided by your gross monthly income."" Gross means before taxes.
On a $100,000 salary, your gross monthly income is about $8,333. Every limit below starts from that number.
The CFPB also notes that ""Different loan products and lenders will have different DTI limits."" There is no single magic number. But there are well-known guidelines. Our full guide to the debt-to-income ratio for a mortgage goes deeper on each one.
What is the 28/36 rule?
The 28/36 idea is a rule of thumb, not a law. A CFPB budgeting tool says: ""Consider maintaining a mortgage debt-to-income ratio of 28 to 35 percent."" It also says to consider keeping all debts at ""36 percent or less,"" and notes that ""Some lenders will go up to 43 percent or higher.""
Loan programs set their own limits:
FHA loans: For manually underwritten FHA loans with a 580+ credit score and no compensating factors, HUD's Mortgagee Letter 2014-02 says the ""total monthly mortgage payment may not exceed 31% of gross effective monthly income"" and the ""total monthly fixed payment may not exceed 43%.""
Conventional loans (Fannie Mae): The Selling Guide says manually underwritten loans have a maximum total DTI of 36%, which ""can be exceeded up to 45%"" if you meet credit score and reserve rules. For loans run through Fannie Mae's Desktop Underwriter, ""the maximum allowable DTI ratio is 50%.""
Being approved at a high DTI is not the same as being comfortable there. The CFPB's advice: ""Focus on a mortgage that is affordable for you given your other priorities, not how much you qualify for.""
How much house can I afford on $100K a year? The math
Here is a worked EXAMPLE. It assumes:
Gross income of $100,000 a year (about $8,333 a month).
No car loan, student loan or card payments.
$600 a month set aside for property taxes, homeowners insurance and mortgage insurance. This is an example number only. Your real costs depend on where you buy and the home you choose.
A 30-year fixed loan at 7.40%, Freddie Mac's average for the week of Oct. 8, 2026.
EXAMPLE budget level | Total monthly housing payment | Left for principal + interest | Loan amount at 7.40% |
|---|---|---|---|
Careful: 28% of gross | about $2,333 | about $1,733 | about $250,300 |
FHA benchmark: 31% of gross | about $2,583 | about $1,983 | about $286,500 |
Stretch: 36% of gross (no other debts) | $3,000 | $2,400 | about $346,600 |
Your home price is the loan plus your down payment. Fannie Mae's HomeReady loan allows ""down payments as low as 3%."" HUD says an FHA down payment ""can be as low as 3.5% of the purchase price."" With 3.5% down, the three loans above line up with home prices of about $259,400, $296,800 and $359,200.
For a sense of scale, the Census Bureau reported that ""The median sales price of new houses sold in August 2026 was $393,700."" That is a national number. Prices in your area may be higher or lower.
How do other debts change the number?
Every monthly debt payment comes out of the same pie. Say you have a $500 car payment and you want to stay at a 36% total DTI. Your total debt budget is $3,000 a month. The car takes $500, leaving $2,500 for housing.
After the example $600 for taxes and insurance, that leaves $1,900 for principal and interest. At 7.40%, that supports a loan of about $274,400, down from about $346,600 with no car payment. One $500 payment cut the example loan by about $72,200.
That is why paying off a small loan before you apply can matter more than you think.
What else changes how much house you can afford?
The CFPB says ""The amount you can afford ultimately depends on five key factors"": your monthly budget after other debts, your down payment, your loan type, your interest rate and terms, and your property costs.
A few to watch:
Your rate. Each move in rates changes the loan size your payment supports. Rates move every week.
Your down payment. More down means a smaller loan and, on a conventional loan, less or no private mortgage insurance. See what PMI is.
Your loan type. FHA and conventional loans treat DTI, credit and mortgage insurance differently. Compare them in FHA vs conventional loan. FHA's annual mortgage insurance premium is 0.55% for most 30-year loans with less than 5% down, per HUD Mortgagee Letter 2023-05.
Property costs. The CFPB notes that ""Homeowner's insurance, property taxes, and possibly private mortgage insurance or homeowners association fees are typically added to your monthly mortgage payment.""
Closing costs and savings. The CFPB warns: ""Don't sacrifice savings in order to buy a bigger house.""
Is $100,000 a good salary to buy a house?
For many places, yes. The Census Bureau says that ""In 2025, median household income was $87,460."" A single $100,000 income is above that national median.
But a good salary is not the whole story. Two buyers who each earn $100,000 can qualify for very different loans. The one with no debts and a bigger down payment can usually borrow more.
What this means for new-construction buyers
Buying a home that is still being built adds a few steps to your budget math:
Get pre-approved early, and stay that way. A build can take months. Your lender will re-check your income and debts before closing. Read what it means to be pre-approved.
Do not add new debt during the build. A new car loan before closing can push your DTI over the limit and shrink the loan you were approved for.
Ask about builder incentives. Some builders help with closing costs or rate buydowns. A lower rate means the same monthly budget supports a bigger loan. Ask each builder what is offered today, or call 561-704-0091 for today's numbers.
Budget for the extras. Window treatments, appliances that are not included, and moving costs all come from the same savings as your down payment.
Common Questions
How much house can I afford on a \$100,000 salary?
In our example at 7.40%, with no other debts and \$600 a month for taxes and insurance, \$100,000 a year supports a loan of about \$250,300 at 28% of gross income and about \$346,600 at 36%. Your real number depends on your debts, down payment, rate and local costs.
What is the 28/36 rule?
It is a budgeting rule of thumb. A CFPB tool suggests keeping your mortgage payment at 28 to 35 percent of gross income and all debts at 36 percent or less. Lenders may approve higher ratios.
What DTI do lenders allow?
It depends on the loan. Fannie Mae allows up to 50% for loans run through Desktop Underwriter. HUD's manual FHA benchmarks are 31% for housing and 43% for all debts.
How much do I need for a down payment?
Fannie Mae's HomeReady loan allows down payments as low as 3%. HUD says an FHA down payment can be as low as 3.5% of the purchase price. You also need money for closing costs.
Does a car payment really lower how much house I can afford?
Yes. In our example, a \$500 car payment at a 36% total DTI cut the loan from about \$346,600 to about \$274,400. Every monthly debt comes out of the same budget.
Should I borrow the most a lender will approve?
Not always. The CFPB advises focusing on a mortgage that is affordable for you given your other priorities, not how much you qualify for. Leave room for savings and repairs.
Ready to take the next step?
Call 561-704-0091 to talk with a National House Search specialist, or Schedule a visit.
Related reading: Debt-to-income ratio for a mortgage · What it means to be pre-approved · FHA vs conventional loan · What is PMI?
Sources: CFPB: debt-to-income ratio · CFPB: can I afford to buy a home? · Fannie Mae Selling Guide B3-6-02 · HUD Mortgagee Letter 2014-02 · Freddie Mac PMMS · Census new residential sales
This is general information, not financial, tax or legal advice. Figures checked October 9, 2026.