Down Payment Calculator
Find out exactly how much you need to save — and what your loan will look like.
Down Payment Calculator
Calculate how much you need for a down payment
Find the down payment for a home or vehicle
Down Payment = Price x PercentageWhat Is a Down Payment?
A down payment is the upfront cash you pay toward a home purchase, expressed as a percentage of the purchase price. Common benchmarks are 3% (some conventional loans), 3.5% (FHA loans), 5%, 10%, and the classic 20%. The higher the percentage, the less you borrow — which means lower monthly payments and less interest paid over the life of the loan.
Putting down 20% is the magic number that lets you avoid Private Mortgage Insurance (PMI), a monthly fee lenders charge when your loan-to-value ratio exceeds 80%. That said, tying up a large chunk of cash in a down payment has a tradeoff: you'll have less in reserve for repairs, emergencies, or other investments. The right balance depends on your savings, income stability, and how long you plan to stay in the home.
How to Use This Calculator
- 1Enter the home purchase price in the field provided.
- 2Enter your desired down payment percentage — or switch to dollar mode and type the exact amount you have saved.
- 3Instantly see the down payment dollar amount, the resulting loan amount, and your LTV ratio.
- 4Check whether PMI applies — if your LTV is above 80%, the calculator estimates your monthly PMI cost range.
The Formulas Behind the Numbers
Down Payment Amount = Home Price × (Down Payment % / 100)
Loan Amount = Home Price − Down Payment
LTV Ratio = (Loan Amount / Home Price) × 100%
PMI required when LTV > 80% (less than 20% down)
Estimated PMI = Loan Amount × 0.5% to 1.5% per yearLTV = Loan-to-Value ratio. PMI cost varies by lender, your credit score, and your exact LTV — 0.5%–1.5% per year is a widely used estimate range.
Worked Examples
Example 1: $350,000 Home — 20% Down
Down payment: $350,000 × 20% = $70,000. Loan amount: $350,000 − $70,000 = $280,000. LTV ratio: ($280,000 / $350,000) × 100 = 80.00%. Result: LTV is exactly 80%, so no PMI is required. This is the sweet spot most buyers aim for.
Example 2: $280,000 Home — 10% Down
Down payment: $280,000 × 10% = $28,000. Loan amount: $280,000 − $28,000 = $252,000. LTV ratio: ($252,000 / $280,000) × 100 = 90.00%. PMI applies. Estimated annual PMI: $1,260–$3,780 (0.5%–1.5% of $252,000), or roughly $105–$315 per month.
Example 3: $450,000 Home — 5% Down
Down payment: $450,000 × 5% = $22,500. Loan amount: $450,000 − $22,500 = $427,500. LTV ratio: ($427,500 / $450,000) × 100 = 95.00%. PMI applies. Estimated annual PMI: $2,138–$6,413 (0.5%–1.5% of $427,500), or roughly $178–$534 per month.