By 
Buying a home is probably the biggest financial decision you will ever make. And one of the most dangerous moments in the process is when a lender tells you how much you are “approved for” and you assume that number is what you can actually afford.
It is not. Lenders will approve you for far more house than is financially comfortable. Their job is to assess risk for the bank, not to make sure you can still afford vacations, retirement contributions, and the occasional dinner out.
Your job is to figure out what you can actually handle, and that is exactly what this guide will help you do.
The 28/36 rule: your starting point
The 28/36 rule is the classic guideline lenders and financial planners have used for decades.
The 28% rule: Your total monthly housing costs should not exceed 28% of your gross monthly income. Housing costs include your mortgage payment (principal and interest), property taxes, homeowners insurance, and HOA fees if applicable.
The 36% rule: Your total monthly debt payments, including housing plus car loans, student loans, credit card minimums, and any other debt, should not exceed 36% of your gross monthly income.
| Gross annual salary | Gross monthly income | Max housing (28%) | Max total debt (36%) |
|---|---|---|---|
| $60,000 | $5,000 | $1,400 | $1,800 |
| $75,000 | $6,250 | $1,750 | $2,250 |
| $100,000 | $8,333 | $2,333 | $3,000 |
| $125,000 | $10,417 | $2,917 | $3,750 |
These numbers use gross income, meaning before taxes. A $75,000 salary might net around $4,700/month after taxes. Spending $1,750 on housing out of $4,700 take-home is 37% of your actual cash flow. That is tight.
This is why many financial planners recommend staying well under the 28% threshold, especially if you are building wealth in your 20s and want room for investing.
Find your number
How Much House Can I Afford?
Enter your income and debts to see your comfortable home price range.
Then verify with the mortgage and DTI calculators:
Mortgage Payment Calculator
Debt-to-Income Ratio Calculator
How lenders calculate your DTI
When you apply for a mortgage, lenders calculate your debt-to-income ratio (DTI) in two ways:
Front-end DTI: Housing costs divided by gross monthly income. Most lenders want this at or below 28%, though some go to 31% or higher.
Back-end DTI: All monthly debt payments (housing plus everything else) divided by gross monthly income. Most conventional loans cap this at 36 to 43%. FHA loans allow up to 50% in some cases.
What counts as debt for DTI: Proposed mortgage payment, car loan or lease payments, student loan payments, credit card minimums, personal loan payments, child support or alimony.
Critical gap: Lenders ignore a huge portion of your actual living expenses. Utilities, groceries, subscriptions, daycare, and childcare do not appear in DTI calculations. A family spending $1,500/month on childcare looks identical to a family spending $0 in the lender’s calculation. This is why “approved for” and “can comfortably afford” are two very different numbers.
“Approved for” vs. “can afford”
A mortgage pre-approval is the maximum a bank is willing to risk on you, not a spending target. The bank profits from lending you more. If you default, they take the house. Their downside is limited. Yours is not.
A good rule of thumb: your total home price should be no more than 3 to 3.5 times your gross annual income if you want a comfortable financial life with room for saving and investing. At $100,000 income, that means targeting homes in the $300,000 to $350,000 range, not the $450,000 the bank might approve you for.
Down payment requirements in 2026
| Loan type | Minimum down payment | Key requirements |
|---|---|---|
| Conventional | 3 to 5% (first-time buyers) | Credit score 620+, PMI required below 20% |
| FHA | 3.5% | Credit score 580+, mortgage insurance for life of loan |
| VA | 0% | Active military or veterans only, no PMI |
| USDA | 0% | Rural areas only, income limits apply |
| Home price | 3.5% down (FHA) | 5% down | 10% down | 20% down |
|---|---|---|---|---|
| $250,000 | $8,750 | $12,500 | $25,000 | $50,000 |
| $350,000 | $12,250 | $17,500 | $35,000 | $70,000 |
| $450,000 | $15,750 | $22,500 | $45,000 | $90,000 |
If you are working on your down payment, read our house down payment guide — you probably do not need 20% down.
The PMI problem
If you put less than 20% down on a conventional loan, you pay private mortgage insurance (PMI). This protects the lender, not you.
Typical PMI costs: 0.5 to 1.5% of the loan amount per year. On a $315,000 loan (10% down on $350,000), PMI at 0.75% costs roughly $197/month. PMI drops off automatically once you reach 20% equity on conventional loans. On FHA loans taken out after 2013, mortgage insurance stays for the life of the loan unless you refinance.
Your credit score directly impacts your PMI rate. A score above 740 gets you the lowest premiums.
Hidden homeownership costs most buyers forget
Property taxes. The national average is roughly 1.1% of assessed value per year. On a $350,000 home: roughly $321/month. In high-tax states like New Jersey and Illinois, effective rates exceed 2%, adding $583+/month.
Homeowners insurance. Average $1,500 to $2,500/year nationally. In disaster-prone states like Florida, Texas, and California, premiums can exceed $4,000 to $5,000/year.
Maintenance and repairs. Budget 1 to 2% of your home’s value per year. On a $350,000 home: $3,500 to $7,000/year ($292 to $583/month). This covers a new roof ($8,000 to $15,000), HVAC replacement ($5,000 to $10,000), plumbing, appliances, and general upkeep. These are “when,” not “if.”
HOA fees. If you buy a condo, townhome, or home in a planned community, expect $200 to $600/month or more.
The true monthly cost example ($350,000 home, 10% down, 6.5% rate):
| Cost component | Monthly amount |
|---|---|
| Mortgage (P&I on $315K, 30-year, 6.5%) | $1,991 |
| Property tax (1.1%) | $321 |
| Homeowners insurance | $175 |
| PMI (0.75% on $315K) | $197 |
| Maintenance reserve (1.5%) | $438 |
| Total | $3,122 |
That $350,000 house actually costs over $3,100/month when you account for everything. Skipping the maintenance budget is borrowing from your future self.
Closing costs: the expense nobody budgets for
Closing costs typically run 2 to 5% of the home’s purchase price.
| Home price | Closing costs (3% estimate) |
|---|---|
| $250,000 | $7,500 |
| $350,000 | $10,500 |
| $450,000 | $13,500 |
For a $350,000 home with 10% down: $35,000 (down payment) + $10,500 (closing costs) = $45,500 in cash needed before you get the keys.
Plus you should still have a 3-month emergency fund after closing. Homeownership comes with surprise expenses.
When renting is actually smarter
Homeownership is not always the right move. Renting is financially smarter when:
- You plan to move within 3 to 5 years (between closing costs and slow early equity buildup, short-term ownership often loses money)
- Your local market is extremely overpriced (price-to-rent ratio above 20)
- You have high-interest debt — paying off 22% APR credit card debt generates more return than 3 to 5% home appreciation
- Your emergency fund is thin
- You value flexibility for career changes or relocations
Renting is not throwing money away. It is paying for flexibility, zero maintenance responsibility, and the ability to invest excess cash.
Rent vs Buy Calculator
Your action plan before house shopping
- Calculate your actual budget using the 28/36 rule with your real income and debts. Use the calculator above.
- Check your credit score and improve it if needed. Every point matters for mortgage rates.
- Save aggressively for down payment plus closing costs plus a 3-month post-purchase emergency buffer. See our down payment savings guide.
- Get pre-approved to know your ceiling, then shop well below it.
- Budget for all costs, not just the mortgage. Use the calculator above to see the full monthly picture.
- Run the rent-vs-buy math for your specific market before committing.
The right home purchase should make you feel secure, not anxious. If the monthly numbers make your stomach tight, the house is too expensive. There will always be another home. There is only one financial future.
Buy what you can genuinely afford, not what the bank says you can handle.
Know your number. Now take action:
- Check your DTI before talking to a lender. Use the debt-to-income calculator above to see where you stand before any bank pulls your credit.
- Working on your down payment? Read our down payment savings guide — it shows exactly how much to save each month to hit your target by a specific date.
- Credit score needs work? Read our credit score guide — going from 680 to 740 can save $50 to $100/month on your mortgage payment.
