How Much House Can You Really Afford?
There's the number a lender will approve you for, and there's the number you can live with — and they're rarely the same. Plenty of families get approved for a payment that leaves no room to breathe. Knowing how much house you can truly afford comes down to a few honest figures: your income, your existing debts, and the full monthly payment, not just the loan part. Let's put real numbers to it.
Quick answer
How much house you can afford depends mostly on your debt-to-income ratio (DTI) — your monthly debt payments divided by your gross monthly income. A common guideline keeps housing around 28% of gross income and total debt under about 36%, though many loan programs allow more. Your real payment includes principal, interest, property taxes, and insurance (PITI), so budget for all four. A pre-approval gives you the true number based on your actual income, credit, and debts.
What you'll learn
- What debt-to-income ratio is and why lenders lean on it
- The 28/36 guideline in plain terms
- Everything that's really in your monthly payment
- Why pre-approval gives you the honest number
Start With Debt-to-Income
Lenders lean on one main measure to decide how much you can borrow: your debt-to-income ratio, or DTI. It's simply your total monthly debt payments divided by your gross monthly income (what you earn before taxes). If you make $7,000 a month and your debts — car, credit cards, student loans, plus the new house payment — add up to $2,800, your DTI is 40%. The lower that number, the more comfortably you carry the loan, and the more room you have for the payment.
The 28/36 Guideline
A long-standing rule of thumb splits DTI into two parts to keep your budget balanced:
- The 28%: try to keep your total housing payment at or under 28% of your gross monthly income.
- The 36%: keep all your debt — housing plus everything else — under about 36%.
- Many programs stretch higher: FHA and others often allow DTI into the 43% to 50% range with strong credit or savings.
- Higher limits mean you can qualify for more, but the payment still has to fit your real life.
Treat 28/36 as a comfort zone, not a hard wall. Plenty of buyers go above it responsibly — the point is to choose with your eyes open.
What's Actually in the Payment
When people picture a mortgage payment, they usually think of principal and interest — the loan part. But your real monthly cost has four pieces, known together as PITI: principal, interest, property taxes, and homeowners insurance. In California, property taxes run roughly 1.1% to 1.25% of the home's value per year, which is real money on top of the loan. If you put less than 20% down, mortgage insurance is added too. Leaving these out is the most common way buyers underestimate what they'll actually pay each month.
Don't Forget the Rest of Your Budget
The house payment isn't the whole picture. A home you can truly afford still leaves room for everything else life costs.
- An emergency fund — repairs and surprises don't wait for a good month.
- Utilities and upkeep, which usually rise when you move from renting to owning.
- Your retirement and savings goals, which shouldn't stop for the mortgage.
- Day-to-day living — groceries, childcare, transportation, a little breathing room.
A payment that looks fine on paper but eats every spare dollar isn't really affordable. Leave yourself a cushion.
Get the Real Number
Online calculators give you a starting estimate, and our affordability calculator is a good first stop. But the true number comes from a pre-approval, where we look at your actual income, credit, and debts and tell you the price range you can comfortably shop in. That keeps you from falling for a home above your budget — or selling yourself short on one you could afford. Send us your numbers or call (562) 881-9811, in English or Spanish, and we'll figure out a payment that fits your life, with no obligation.
15-Year vs. 30-Year: How the Term Changes Your Payment
The loan term is one of the biggest levers on your monthly payment and how much house fits your budget. Here's the trade-off between the two most common options.
| Feature | 15-year fixed | 30-year fixed |
|---|---|---|
| Monthly payment | Higher | Lower |
| Interest rate | Usually a little lower | Usually a little higher |
| Total interest paid | Much less | More over the life of the loan |
| Payoff speed | Twice as fast | Slower, with more breathing room |
| Best for | A bigger budget and faster payoff | A lower payment and more flexibility |
Illustrative comparison — actual rates and payments vary. Not a loan approval or rate quote.
Key takeaways
- DTI compares your monthly debts to your gross income.
- Aim for housing near 28% and total debt under about 36%.
- Your payment is PITI — principal, interest, taxes, insurance.
- Pre-approval turns a guess into a real price range.
Common questions
What is a good debt-to-income ratio to buy a house?
Lower is better. A DTI under 36% is comfortable and opens the most options, but many loan programs approve buyers into the 43% to 50% range with strong credit, steady income, or savings. We can tell you where you stand.
How much income do I need to buy a home in California?
It depends on the price, your down payment, your other debts, and the rate. Rather than a single income figure, we work backward from a comfortable monthly payment to a price range — that's what a pre-approval gives you.
Does my down payment change how much house I can afford?
Yes. A larger down payment lowers the loan amount and the monthly payment, and reaching 20% lets you skip mortgage insurance. Even so, low-down-payment loans let many buyers afford a home sooner than they'd expect.
Should I borrow the maximum I'm approved for?
Not necessarily. The approval is a ceiling, not a target. The smarter number is the payment that fits your budget with room left over for savings and the unexpected.
Do property taxes really change what I can afford?
They do. In California, taxes of roughly 1.1% to 1.25% of the home's value per year add a meaningful amount to the monthly payment, so we always include them in your real affordability number.