Start with what you can actually borrow, not what you want to spend

Most people work backward from a house price they like, then panic when they can't afford it. The real starting point is your debt-to-income ratio — the percentage of your gross monthly income that goes to debt payments. Lenders typically cap this at 43 percent, though some will go to 50 percent if your credit is strong and you have savings.

To find your number: add up all monthly debt payments (car loans, student loans, credit cards at minimum, any other installments), divide by your gross monthly income, and multiply by 100. If you earn $5,000 a month and pay $1,500 in debt, that's 30 percent. A mortgage lender will then estimate how much house payment fits in the remaining 13 percent of your income before hitting 43 percent. That calculation depends on interest rates, property taxes in your area, and homeowners insurance — all of which vary.

The point: before you look at a single house, know your actual borrowing ceiling. This number comes from a lender, not from a real estate agent or a calculator on a website. Call three lenders — a bank, a credit union, and a mortgage broker — and ask for a pre-qualification conversation. It costs nothing and takes 20 minutes.

Key Takeaways

  • Your debt-to-income ratio determines how much a lender will loan you, and most lenders cap it at 43 percent of your gross monthly income.
  • A down payment of 20 percent avoids private mortgage insurance (PMI), which adds $100 to $300 per month to your payment and cannot be removed until you reach 20 percent equity.
  • Closing costs typically run 2 to 5 percent of the purchase price and must be paid upfront, so saving for a down payment alone is not enough.
  • Improving your credit score before applying for a mortgage can lower your interest rate by 0.5 to 1 percent, which saves tens of thousands over 30 years.
  • A first-time homebuyer program in your state or county may offer down payment help, lower interest rates, or reduced closing costs if you meet income limits.

Build a down payment without wiping out your emergency fund

A 20 percent down payment is the standard that avoids private mortgage insurance (PMI). On a $300,000 house, that's $60,000. Most people cannot save that in a year or two, and trying to do so by cutting everything else creates a fragile financial position — you'll have no cushion when the transmission fails or you lose a week of work.

A more realistic path: save 10 to 15 percent down, accept PMI as a temporary cost, and plan to remove it later. PMI typically costs 0.5 to 1 percent of the loan amount per year, split into monthly payments. On a $240,000 loan (80 percent of a $300,000 house), that's roughly $100 to $200 per month. Once you reach 20 percent equity — either through payments or home appreciation — you can request PMI removal. This usually takes 5 to 10 years.

While you're saving, keep your emergency fund separate. Aim for three to six months of expenses in a high-yield savings account before you start the down payment fund. Then open a dedicated savings account for the house and set up automatic transfers. The mental separation prevents you from raiding house money when the car needs work.

Account for closing costs, property taxes, and insurance before you commit

The down payment is not the only money that leaves your account at closing. Closing costs — the fees paid to the lender, title company, appraiser, and inspector — typically run 2 to 5 percent of the purchase price. On a $300,000 house, that's $6,000 to $15,000, due at signing.

Some lenders allow you to roll closing costs into the loan, which means you don't pay them upfront but you pay interest on them for 30 years. This is useful if you're short on cash, but it increases your total cost. A $10,000 closing cost rolled into a 30-year mortgage at 7 percent adds roughly $23,000 in interest.

Beyond closing, budget for property taxes and homeowners insurance in your monthly payment. Property taxes vary wildly by location — from under 0.5 percent of home value per year in some states to over 2 percent in others. Insurance typically runs $1,000 to $2,000 per year depending on the house and your location. Ask a local insurance agent and your county assessor's office for real numbers for the specific house you're considering, not national averages.

Improve your credit score before you apply for a mortgage

A 30-point difference in credit score can mean a 0.5 to 1 percent difference in your mortgage interest rate. On a $300,000 loan, that's the difference between a $1,996 monthly payment and a $2,100 monthly payment — $1,248 per year, or $37,000 over 30 years.

If your score is below 740, spend three to six months improving it before you apply. Pay down credit card balances to below 30 percent of your limit (a card with a $5,000 limit should carry no more than $1,500). Make every payment on time — even one late payment in the past two years will cost you. If you have collections or charge-offs, they're harder to fix, but a lender can still work with you; ask about a manual underwriting review, which considers your full financial picture rather than just the score.

Do not open new credit cards or take out new loans while you're saving for a house. Each inquiry and new account temporarily lowers your score. Do not close old credit cards after paying them off — closing them reduces your available credit and can actually hurt your score.

Look for first-time homebuyer programs in your state or county

Most states and many counties run down payment assistance programs for first-time buyers. These programs vary widely: some offer grants (money you don't repay), some offer low-interest loans, some offer a combination, and some reduce your interest rate. Income limits apply, and they differ by location.

Start by contacting your state housing finance agency — search "[your state] housing finance agency" — and ask what programs exist for your income level. Your county assessor's office or local housing authority can also point you toward programs. Some programs require a homebuyer education course, which typically costs $50 to $100 and takes a few hours online.

Common programs include down payment grants of $5,000 to $25,000, second mortgages at 0 percent interest (you repay them only if you sell or refinance), and interest rate reductions of 0.25 to 0.5 percent. A 0.5 percent rate reduction on a $300,000 loan saves roughly $150 per month. These programs fill up and reopen, so if you miss one round, ask when the next application period begins.

Reduce your debt before you apply, especially high-interest debt

Every dollar of debt payment counts against your borrowing power. If you have $400 in car payments and $200 in credit card minimums, that's $600 per month that reduces how much house you can afford. Paying off the car or the credit cards before you apply directly increases your borrowing ceiling.

Prioritize high-interest debt first. A credit card at 22 percent interest costs you far more than a car loan at 6 percent. If you have $10,000 in credit card debt at 22 percent, you're paying roughly $183 per month in interest alone. Paying that off before you apply frees up that $183 (or whatever your minimum payment is) for a mortgage payment.

Student loans are different — lenders count them even if you're on an income-driven repayment plan, but the payment they use is often lower than what you'd pay under a standard plan. Ask your lender which repayment plan they'll use in their calculation before you refinance or consolidate.

Calculate the true monthly cost, including maintenance and utilities

Your mortgage payment is not your housing cost. Property taxes, insurance, PMI (if applicable), and HOA fees (if the house is in an association) all stack on top of the principal and interest. Then add maintenance and utilities.

Maintenance typically runs 1 percent of the home's value per year — $3,000 per year on a $300,000 house, or $250 per month. This covers roof repairs, HVAC service, plumbing, appliance replacement, and painting. New homeowners often underestimate this because nothing breaks in the first year, then everything breaks at once.

Utilities vary by climate and house size, but budget $150 to $300 per month for electricity, gas, water, and sewer. Add these to your mortgage payment, taxes, insurance, and PMI to get your true housing cost. If that number is more than 28 to 30 percent of your gross monthly income, the house is too expensive for your situation right now, even if the lender says you can afford it.

Frequently Asked Questions

What's the difference between pre-qualification and pre-approval?

Pre-qualification is a rough estimate based on information you provide — it takes 15 minutes and carries no weight. Pre-approval means a lender has verified your income, credit, and assets and is willing to lend you a specific amount. Pre-approval takes a few days and is what sellers take seriously. Get pre-approved before you start house hunting.

Should I get a 15-year mortgage or a 30-year mortgage?

A 15-year mortgage has a higher monthly payment but costs far less in interest over time. A 30-year mortgage has a lower payment but costs roughly twice as much in total interest. Choose based on what payment fits your budget without cutting into savings and emergencies. You can always pay extra toward principal later.

Is it better to save for a bigger down payment or to buy sooner with a smaller one?

Buying sooner with 10 to 15 percent down and PMI is often better than waiting years to save 20 percent, because home prices and rents typically rise faster than you can save. You'll build equity while you live there, and you can remove PMI once you hit 20 percent equity. Run the numbers for your specific market and timeline.

Can I use a gift from family for my down payment?

Yes, most lenders allow down payment gifts from family members. You'll need a signed letter from the gift-giver stating it's a gift, not a loan, and the money must come from their personal account. Some lenders require the gift to sit in your account for two months before closing to prove it's not borrowed money.

What happens if I lose my job after I'm pre-approved but before closing?

The lender will likely pull your credit and verify employment again a few days before closing. If you're unemployed, they may delay or cancel the loan. If you find a new job before closing, bring a job offer letter and your first pay stub. Be honest with your lender about any employment changes — they'll find out anyway.