How Much House You Can Actually Afford on Your Income
What affordability means in real terms
Affordability is not what a lender will loan you — it is what you can pay for without breaking your budget every month. Lenders use a formula called the debt-to-income ratio, which caps your total monthly debt payments (including the new mortgage) at 43% of your gross monthly income. But that formula does not account for property taxes that spike, insurance that rises, or the furnace that fails in year three.
A practical affordability number is lower. Most financial advisors suggest keeping your housing payment — mortgage, property tax, insurance, and homeowners association fees — to 28% of your gross monthly income or less. This leaves room for maintenance, utilities, and the rest of your life.
The actual price you can afford depends on three things: your down payment, your interest rate, and your local property taxes and insurance costs. The same income supports a different house price in rural Kentucky than in suburban Boston.
Key Takeaways
- Lenders will loan up to 43% of your gross income, but a sustainable budget keeps housing costs to 28% or less of gross income.
- The same annual income supports different house prices depending on your down payment size, current interest rates, and your location's property taxes and insurance.
- A $50,000 annual income typically supports a house price between $140,000 and $180,000; a $100,000 income typically supports $280,000 to $360,000.
- Property taxes and insurance vary widely by state and county, so a house that is affordable in one place may not be in another.
- First-time buyer programs can lower your down payment requirement, which raises the house price you can afford on the same income.
How income translates to house price
The relationship between income and house price depends on the interest rate at the time you borrow. When rates are lower, your monthly payment is smaller, so you can afford a higher price on the same income. When rates are higher, the opposite is true.
Here is the rough math at a 7% interest rate with a 20% down payment, assuming property taxes and insurance total about 1.2% of the home's value annually:
| Annual Income | 28% Housing Budget | Typical House Price Range |
|---|---|---|
| $40,000 | $933/month | $110,000–$140,000 |
| $50,000 | $1,167/month | $140,000–$180,000 |
| $75,000 | $1,750/month | $210,000–$270,000 |
| $100,000 | $2,333/month | $280,000–$360,000 |
| $150,000 | $3,500/month | $420,000–$540,000 |
These ranges account for variation in property taxes and insurance across regions. A house at the lower end of the range is in a lower-tax area or has lower insurance costs; a house at the higher end is in a higher-cost area or has a smaller down payment. Interest rates change constantly, so these numbers shift with the market.
How down payment size changes what you can afford
A larger down payment means a smaller loan, which means a lower monthly payment on the same house price. This lets you afford a more expensive house on the same income. Conversely, a smaller down payment means a larger loan and a higher monthly payment, so you can afford less house.
On a $300,000 house at 7% interest, the difference is stark. With a 20% down payment ($60,000), your loan is $240,000 and your principal-and-interest payment is roughly $1,596 per month. With a 5% down payment ($15,000), your loan is $285,000 and your payment is roughly $1,896 per month — $300 more every month. That $300 difference means you need about $12,900 more in annual income to stay within the 28% budget.
First-time buyer programs often lower the down payment requirement to 3% or even 0%, which raises the house price you can afford on your current income. The trade-off is that you pay mortgage insurance (PMI) on loans with less than 20% down, which adds to your monthly cost. Some programs roll the insurance into the loan; others charge it monthly.
Property taxes and insurance vary by location
Two identical houses in different states can have very different affordability. Property taxes range from less than 0.3% of home value annually in Hawaii to over 2% in New Jersey. Insurance varies just as widely — coastal areas and areas prone to hail or wildfires pay far more than inland regions.
A $300,000 house in a low-tax, low-insurance area might have $250 per month in combined property tax and insurance. The same house in a high-tax, high-insurance area might have $500 or more per month. That $250 difference means you need roughly $10,700 more in annual income to afford the same house in the expensive location.
Before you settle on a house price based on income alone, research the property tax rate and average insurance cost in the specific county or neighborhood you are considering. Your real estate agent or the county assessor's office can give you the tax rate; insurance companies can quote you a rate based on the address.
How to calculate your own affordability number
Start with your gross monthly income — the amount before taxes and deductions. Multiply it by 0.28 to find your 28% housing budget. This is the maximum you should spend on mortgage payment, property tax, insurance, and HOA fees combined each month.
Next, estimate your property tax and insurance. Contact the county assessor's office for the tax rate on homes in your target price range, and get insurance quotes from two or three companies for the same address. Add these monthly costs together.
Subtract that total from your 28% budget. What remains is what you can spend on the mortgage payment itself (principal and interest). Use an online mortgage calculator to see what loan amount that payment supports at your expected interest rate. Add your down payment to that loan amount, and you have your affordable house price.
Example: You earn $75,000 annually. Your gross monthly income is $6,250. Your 28% budget is $1,750. Property tax and insurance in your target area total $400 per month. You have $1,350 left for the mortgage payment. At 7% interest, a $1,350 payment supports a loan of roughly $193,000. With a 10% down payment ($21,444), you can afford a house around $214,000.
When lender approval does not match affordability
A lender may approve you for more than you should spend. Lenders use the 43% debt-to-income ratio, which is higher than the 28% housing-only budget. They also do not know your other financial goals — whether you want to save for retirement, pay down student loans, or have an emergency fund. They are measuring whether you can technically make the payment, not whether you should.
If a lender pre-approves you for $400,000 but your 28% budget supports $280,000, the lower number is the one that protects your financial stability. Borrowing at the lender's limit often leads to house-poor households where one job loss or one major repair creates a crisis.
Use the lender's pre-approval as a ceiling, not a target. Your own affordability calculation is the floor you should actually build to.
How first-time buyer programs affect affordability
First-time buyer programs lower the down payment requirement, which increases the house price you can afford on the same income. Some programs also offer below-market interest rates or cover closing costs, which further reduces your monthly payment or upfront cash need.
The most common programs are state and local down payment assistance programs, FHA loans (which allow down payments as low as 3.5%), VA loans (which allow 0% down for may be able to access veterans), and USDA loans (which allow 0% down in rural areas). Each has different rules about income limits, property location, and the type of house you can buy.
These programs do not change your actual affordability — they change how much house you can buy with the down payment you have. If you have $20,000 saved and a 20% down payment is required, you can afford a $100,000 house. If a program allows a 5% down payment, that same $20,000 buys a $400,000 house. Your income still determines whether you can afford the monthly payment on that $400,000 house, but the program lets you reach a higher price if your income supports it.
Frequently Asked Questions
Can I afford a house if I have student loan debt or a car payment?
Yes, but your other debt reduces the house price you can afford. Lenders include all monthly debt payments in the 43% calculation. If you pay $400 per month on student loans and $300 on a car, that is $700 that counts against your housing budget. Pay down or pay off high-interest debt before house hunting if you can, because every $100 in monthly debt payments reduces the house price you can afford by roughly $15,000 to $20,000.
What if my income is irregular or I am self-employed?
Lenders typically average your income over two years and may require tax returns, profit-and-loss statements, and bank statements to verify it. If your income is rising, you may be able to use a higher average. If it is falling, lenders use the lower figure. Self-employed borrowers often face stricter scrutiny, so work with a mortgage broker who has experience with self-employed clients and gather your financial documents early.
Does the 28% rule apply if I have no other debt?
The 28% rule is conservative and assumes you have other financial obligations. If you truly have no car payment, no student loans, and no credit card debt, you might comfortably go to 32% or 35% of gross income on housing. But build in a cushion for maintenance, which averages 1% of home value annually, and for the fact that property taxes and insurance tend to rise over time.
How much should I have saved for a down payment?
That depends on the program you use. Conventional loans typically require 5% to 20% down. FHA loans require 3.5% down. VA and USDA loans require 0% down if you are may be able to access. Beyond the down payment, plan to have 2% to 5% of the purchase price available for closing costs, unless a program covers them. If you have less saved, look into down payment assistance programs in your state or county.
What if house prices in my area are much higher than my income supports?
You have three options: save a larger down payment to lower your monthly payment, look in a different neighborhood or town with lower prices, or wait for interest rates to fall (which lowers monthly payments). Some people also increase their income through a second job or career change, though that takes time. If none of these work, renting may be the better choice for now.