The real paths to homeownership depend on your down payment, income, and what lenders will accept

Most people buy houses by borrowing money from a bank or mortgage lender, then repaying it over 15 to 30 years. The lender requires a down payment — money you put down upfront — before they will lend you the rest. The size of that down payment, your income, your credit history, and the interest rate you may have access to for all determine whether a house is affordable for you and which purchase price you can actually reach.

There is no single path. Some people save for years to put down 20 percent. Others buy with 3 percent down and accept higher monthly payments and insurance costs. Some use gifts from family. Some use first-time buyer programs that lower the down payment requirement. Some buy with a co-borrower to combine two incomes. The choice depends on what you have now, what you can save, and what trade-offs you are willing to make.

Key Takeaways

  • A mortgage lender will typically lend you 80 to 97 percent of the home's purchase price, meaning you must have the rest as a down payment before closing.
  • Monthly affordability depends on your gross income, existing debts, the interest rate you may have access to for, property taxes in your area, and homeowners insurance costs.
  • Down payment assistance programs, first-time buyer mortgages, and family gifts are common ways people bridge the gap between what they have saved and what they need to buy.
  • A larger down payment lowers your monthly payment and removes the requirement to pay mortgage insurance, but it takes longer to save and delays your purchase.
  • Your credit score and debt-to-income ratio determine which lenders will work with you and what interest rate you will receive.

How much down payment you actually need

Conventional mortgages — the most common type — typically require a down payment of 3 to 20 percent of the home's purchase price. If you are buying a $300,000 house, 3 percent is $9,000 and 20 percent is $60,000. The smaller your down payment, the more you borrow and the higher your monthly payment becomes.

If you put down less than 20 percent, the lender will require you to pay mortgage insurance — an extra monthly fee that protects the lender if you stop paying. This insurance typically costs 0.5 to 1.5 percent of the loan amount per year, divided into your monthly payment. On a $270,000 loan, that could add $100 to $300 per month. You can stop paying it once you have paid down the loan to 80 percent of the home's original value, which takes years.

Government-backed mortgages like FHA loans allow down payments as low as 3.5 percent, but they also require mortgage insurance that you may not be able to remove. VA loans (for military members and veterans) and USDA loans (for rural areas) sometimes allow zero down payment, though you still pay fees rolled into the loan amount.

What lenders look at to decide if you can afford it

A mortgage lender will not lend you money based only on the house price. They look at your income, your existing debts, and your credit history to decide whether you can actually make the monthly payment.

Most lenders use a debt-to-income ratio — the total of all your monthly debt payments divided by your gross monthly income. If you earn $5,000 per month and already owe $800 on a car loan and $200 on student loans, your existing debt is $1,000. Most lenders will not let your new mortgage payment plus existing debts exceed 43 to 50 percent of your income. That means your mortgage payment could be around $1,150 to $1,500 per month, depending on the lender.

Your credit score affects the interest rate you receive. A score above 740 typically qualifies for the lowest rates. A score between 620 and 680 may still get you a mortgage, but at a higher rate — sometimes 1 to 2 percent higher, which adds hundreds of dollars to your monthly payment. Below 620, most conventional lenders will not work with you, though FHA loans may still be possible.

The lender will also verify your income through recent tax returns, W-2 forms, and pay stubs. If you are self-employed, you may need two years of tax returns. If you have changed jobs recently, some lenders will ask for a letter from your new employer confirming your position and salary.

Down payment assistance and first-time buyer programs

Many states, counties, and cities offer down payment assistance programs that give money or low-interest loans to help you cover the down payment and closing costs. These programs vary widely by location. Some cover up to 15 percent of the purchase price. Others are forgivable loans — you do not have to repay them if you stay in the house for a set number of years, usually 5 to 10.

First-time buyer mortgages, offered by Fannie Mae, Freddie Mac, and FHA, allow lower down payments (3 to 3.5 percent) and sometimes waive or reduce mortgage insurance requirements. You must not have owned a home in the past three years to may have access to. Some programs define "first-time buyer" more broadly to include people who have been divorced or widowed since their last home purchase.

To find programs in your area, contact your state housing finance agency (search "[your state] housing finance agency"), your county assessor's office, or a HUD-approved housing counselor. Many nonprofits also offer down payment assistance and can point you toward local programs. The National Foundation for Credit Counseling and NeighborWorks America both maintain directories of counselors who can review your situation for free.

Using family money and co-borrowers

If a family member gives you money for a down payment, most lenders require a gift letter — a signed statement from the family member saying the money is a gift, not a loan you have to repay. The lender wants to know you are not taking on hidden debt. The gift letter must state the amount, the date, and that no repayment is expected. Some lenders also require proof that the money has been in your account for at least two months before closing.

If your income alone is not enough to may have access to for the mortgage amount you need, you can add a co-borrower — usually a spouse or parent — whose income counts toward the qualification. Both of you are equally responsible for repaying the loan. The lender will look at both of your credit scores and debt-to-income ratios, so a co-borrower with poor credit or high existing debts can actually hurt your chances.

The trade-off between saving longer and paying more per month

A larger down payment means a smaller loan, a lower monthly payment, and no mortgage insurance. But it also means saving for longer before you can buy. A smaller down payment lets you buy sooner, but your monthly payment is higher and you pay mortgage insurance on top of it.

If you have $20,000 saved and are deciding between putting it all down on a $200,000 house (10 percent down) or waiting two more years to save $40,000 (20 percent down), the math depends on local home prices, interest rates, and your ability to save. If home prices in your area are rising faster than you can save, buying sooner with a smaller down payment may cost less overall. If prices are stable or falling, waiting may be smarter. A mortgage lender or housing counselor can run the numbers for your specific situation.

Interest rates and how they change what you can afford

The interest rate on your mortgage is one of the biggest factors in affordability. A difference of just 1 percent changes your monthly payment significantly. On a $300,000 loan over 30 years, the difference between 6 percent and 7 percent interest is roughly $200 per month.

Interest rates depend on the type of mortgage, the current market, your credit score, your down payment size, and the lender you choose. Rates change daily. A mortgage broker or lender can show you rates from multiple companies so you can compare. Some lenders offer rate locks — a promise to hold a rate for 30 to 60 days while you shop for a house — so you know what your payment will be before you make an offer.

If interest rates are high when you are ready to buy, you may afford a lower purchase price than you would at a lower rate. Some people choose to wait for rates to drop, though there is no may provide they will. Others buy now and refinance later if rates fall — though refinancing costs money and takes time.

Property taxes, insurance, and the full monthly cost

Your monthly housing payment includes more than just the mortgage. It also includes property taxes, homeowners insurance, and possibly mortgage insurance and HOA fees. These vary by location and the house itself.

Property taxes are set by your county or municipality and are based on the home's assessed value. They vary dramatically by location — from less than 0.3 percent of home value per year in some states to over 2 percent in others. A $300,000 house in a low-tax state might cost $750 per month in property taxes, while the same house in a high-tax state could cost $500 per month or $2,000 per month depending on the area.

Homeowners insurance covers damage to the house and liability if someone is injured on your property. Lenders require it. Costs depend on the house's age, location, construction type, and your claims history. In areas prone to hurricanes, floods, or wildfires, insurance can be very expensive. In stable areas, it might be $100 to $200 per month.

When you are calculating what you can afford, add these costs to your mortgage payment. A $1,200 mortgage payment plus $400 in property taxes and insurance means your total housing cost is $1,600 per month — and that is what the lender will use to calculate your debt-to-income ratio.

Frequently Asked Questions

What is the minimum credit score to get a mortgage?

Conventional mortgages typically require a credit score of at least 620, though most lenders prefer 640 or higher. FHA loans may work with scores as low as 580. The lower your score, the higher the interest rate you will receive. You can check your credit score for free through AnnualCreditReport.com, which is the official site for the three major credit bureaus.

Can I buy a house if I have student loan debt?

Yes, but your student loan payments count toward your debt-to-income ratio. If your student loans are in deferment or forbearance (paused), lenders may still count them as debt. Paying down student loans before applying for a mortgage can improve your ratio and help you may have access to for a larger loan or lower interest rate.

What happens if I cannot save a down payment?

Look into down payment assistance programs in your state or county, VA or USDA loans if you are may be able to access, or FHA loans that allow 3.5 percent down. Some nonprofits also offer grants or forgivable loans. A HUD-approved housing counselor can review your situation and point you toward programs you may not know about.

Is it better to get a 15-year or 30-year mortgage?

A 15-year mortgage has a higher monthly payment but you pay much less interest overall and own the house sooner. A 30-year mortgage has a lower monthly payment, making it easier to afford, but you pay nearly twice as much in interest. The choice depends on your income, how long you plan to stay in the house, and whether you have other financial priorities like saving for retirement.

Should I buy now or wait for prices to drop?

No one can predict whether prices will rise or fall. If you need a house now and can afford it, waiting for a price drop that may never come means paying rent in the meantime. If you are not ready financially, waiting to save more or improve your credit score is usually smarter than rushing into a mortgage you cannot comfortably afford.