The Basic Formula: Percentage of the Purchase Price

Your down payment is simply a percentage of the home's purchase price that you pay upfront, with the rest financed through a mortgage loan. The calculation is straightforward: multiply the home's price by your down payment percentage, and that number is what you owe at closing.

For example, if you are buying a house for $300,000 and putting down 20 percent, your down payment is $60,000. If you put down 10 percent instead, it is $30,000. The lender finances the remaining amount—$240,000 or $270,000 in these examples—and you repay it monthly over 15, 20, or 30 years depending on your loan term.

The percentage you choose affects three things: how much cash you need right now, how much you borrow, and how much interest you pay over the life of the loan. A larger down payment means a smaller loan and lower total interest costs, but it also means more money out of your pocket before you move in.

Key Takeaways

  • Down payment amount equals the home's purchase price multiplied by your chosen percentage (10 percent, 15 percent, 20 percent, and so on).
  • Lenders typically require a minimum down payment of 3 to 5 percent, though some programs allow lower amounts and some borrowers choose to put down more.
  • Down payments below 20 percent trigger private mortgage insurance (PMI), which adds to your monthly payment until you reach 20 percent equity in the home.
  • Your down payment, closing costs, and inspections are separate expenses—you need cash for all three at closing, not just the down payment alone.
  • The down payment you can afford depends on your savings, your income (which determines how much a lender will loan you), and your other debts.

Common Down Payment Percentages and What They Mean

Lenders offer several standard down payment options, each with different requirements and trade-offs. A 3 percent down payment is the minimum many conventional loans allow, meaning you finance 97 percent of the purchase price. A 5 percent down payment is also common and slightly reduces your loan amount. A 10 percent down payment cuts your loan in half relative to the purchase price and is often seen as a middle ground.

The 20 percent down payment is a threshold many lenders treat as standard. At 20 percent, you avoid private mortgage insurance entirely, which saves you money each month. Below 20 percent, you pay PMI on top of your regular mortgage payment until your loan balance drops to 80 percent of the home's original value.

Some borrowers put down 25 percent or more, especially if they have substantial savings or are buying a less expensive home. The higher your down payment, the lower your monthly mortgage payment and the less total interest you pay, but there is no requirement to go above 20 percent unless you choose to.

What Affects How Much You Can Actually Put Down

Your down payment is limited by three factors: how much cash you have saved, how much a lender will loan you, and how much total debt you can carry. These three constraints often pull in different directions.

If you have $100,000 saved but are buying a $500,000 home, you can put down 20 percent ($100,000) even though you have the cash. The lender will finance the remaining $400,000 based on your income and credit. If your income is too low, the lender may refuse to loan $400,000 no matter how much cash you have, which means you cannot afford that home at all.

Conversely, if you have $50,000 saved and want to buy a $300,000 home, you have enough cash for a 16.7 percent down payment. But if your income is high enough, the lender may be willing to loan you $285,000 (95 percent of the price), which would let you put down only 5 percent and keep more cash in reserve. Your choice depends on whether you want to minimize your monthly payment or preserve your savings.

Down Payment Versus Closing Costs—They Are Not the Same

A common mistake is assuming your down payment is the only money you need at closing. In reality, closing costs are a separate expense that typically ranges from 2 to 5 percent of the purchase price. These costs cover the appraisal, title search, title insurance, loan origination fees, attorney fees, and other services required to complete the sale.

On a $300,000 home with a 20 percent down payment and 3 percent closing costs, you need $60,000 for the down payment plus $9,000 for closing costs—$69,000 total. Many buyers budget for both by saving enough to cover the down payment plus an additional 3 to 5 percent of the purchase price for closing costs.

Some sellers agree to cover part or all of the buyer's closing costs as part of the negotiation, which reduces the cash you need to bring. This is called a seller concession, and it is common in buyer-friendly markets. Even so, you still need the full down payment amount unless you are using a down payment assistance program.

How Private Mortgage Insurance Affects Your Real Cost

If your down payment is less than 20 percent, your lender requires you to pay private mortgage insurance (PMI). This is an insurance policy that protects the lender if you default on the loan, and the cost is added to your monthly mortgage payment.

PMI typically costs between 0.5 and 1.5 percent of your loan amount per year, though the exact rate depends on your credit score, the size of your down payment, and the lender. On a $240,000 loan (80 percent of a $300,000 home with a 20 percent down payment), you would owe no PMI. On a $270,000 loan (90 percent of the same home with a 10 percent down payment), PMI might add $100 to $200 to your monthly payment.

PMI is not permanent. Once your loan balance drops to 80 percent of the home's original purchase price—through a combination of payments and home appreciation—you can request that the lender remove it. This usually takes 8 to 12 years on a 30-year loan, though it happens faster if you make extra payments or the home appreciates significantly.

Special Programs That Lower the Down Payment Requirement

Several loan programs allow down payments below the conventional 3 to 5 percent minimum. FHA loans, backed by the Federal Housing Administration, allow down payments as low as 3.5 percent and are designed for first-time buyers or those with lower credit scores. VA loans, available to military members and veterans, often allow zero down payment. USDA loans, for rural properties, also allow zero down payment for borrowers who meet income limits.

Each program has different requirements and trade-offs. FHA loans require mortgage insurance for the life of the loan, not just until you reach 20 percent equity. VA and USDA loans have stricter property and location requirements. Understanding which program fits your situation requires comparing the monthly payment (including insurance), the upfront costs, and the long-term interest expense.

Down payment assistance programs run by nonprofits, state housing agencies, and some employers also exist, though availability and terms vary widely by location and income. These programs may offer grants (money you do not repay) or forgivable loans (loans that disappear if you stay in the home for a set period). Researching what is available in your area is worth doing before you settle on a down payment amount.

Frequently Asked Questions

Can I borrow money from family to cover my down payment?

Yes, but lenders require documentation. If a family member gives you money as a gift, the lender needs a signed gift letter stating the money does not need to be repaid. If it is a loan, you must disclose it as a debt, which affects how much the lender will loan you for the mortgage. Most lenders allow gift money but not borrowed money for down payments.

What happens if I put down less than 3 percent?

Conventional loans typically do not allow down payments below 3 percent. FHA loans go as low as 3.5 percent. If you have less saved, you may need to wait until you have more, explore down payment assistance programs, or consider a less expensive home. Some lenders offer non-traditional programs, but they usually charge higher interest rates to offset the risk.

Does a larger down payment always mean a lower monthly payment?

Yes. A larger down payment means you borrow less, so your monthly principal and interest payment is lower. However, your total monthly payment also includes property taxes, homeowners insurance, and possibly PMI or HOA fees, which are not directly affected by your down payment amount. Still, the mortgage portion—usually the largest part—decreases as your down payment increases.

What if I want to put down more than 20 percent?

You can put down any amount you choose, up to 100 percent if you are paying cash. Putting down more than 20 percent lowers your monthly payment further and means you owe less interest over the life of the loan. The trade-off is that you have less cash available for emergencies, home repairs, or other investments. There is no financial penalty for putting down more, but there is an opportunity cost.

How do I know if I can afford a particular down payment?

A down payment is affordable if you have the cash saved without depleting your emergency fund, and if the resulting monthly mortgage payment (including taxes, insurance, and PMI) fits within your budget. Most lenders use a debt-to-income ratio: your total monthly debt payments should not exceed 43 percent of your gross monthly income. Use this as a starting point, then calculate whether the specific down payment and home price work for your actual situation.