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Home Purchase Calculator

Down Payment Calculator

Calculate down payment amount, loan amount, loan-to-value ratio, and payment impact in seconds. This free down payment calculator helps you estimate how different down payment levels affect a home purchase.

Enter home purchase details

Choose a home price and down payment to estimate loan size and monthly payment impact.

Home price

Down payment

Down payment type

Interest rate (%)

Loan term

Closing costs (optional) Optional estimate for additional upfront cash needed.

Property tax (annual, optional)

Home insurance (annual, optional)

Loan Amount

Estimated mortgage amount after subtracting your down payment.

Down Payment %

Loan-to-Value (LTV)

Monthly Payment

Cash Needed Upfront

Down payment breakdown

Home price $0

Down payment amount $0

Loan amount $0

Closing costs $0

Principal & interest $0

Total monthly payment $0

Home price composition

Down payment

Loan amount

How this down payment calculator works

This calculator estimates how much cash you put down upfront and how much you still need to borrow. It also shows how your down payment affects the loan-to-value ratio and estimated monthly payment.

A larger down payment reduces your loan amount, which can lower monthly payments and total interest over time. It may also improve loan terms or reduce the need for mortgage insurance in some cases.

What does this calculator show?

Down payment amount: Cash paid upfront toward the home price
Loan amount: Home price minus down payment
LTV ratio: Loan amount divided by home price
Cash needed upfront: Down payment plus estimated closing costs

Common uses

Compare different down payment sizes
Estimate mortgage loan amount
Check upfront cash needed for a purchase
See the monthly payment effect of a larger down payment

Down payment formulas

The calculator uses these standard formulas:

Down Payment Amount = Home Price × Down Payment % Loan Amount = Home Price − Down Payment Amount LTV Ratio (%) = (Loan Amount ÷ Home Price) × 100 Cash Needed Upfront = Down Payment Amount + Closing Costs Monthly Principal & Interest = P × [ r(1 + r)^n ] ÷ [ (1 + r)^n − 1 ] Total Monthly Payment = Principal & Interest + Monthly Property Tax + Monthly Insurance

Example

If the home price is $350,000 and you put down $70,000, your down payment is 20% and your loan amount is $280,000. That also produces an LTV ratio of 80%.

Down Payment Calculator FAQ

What is a down payment?

A down payment is the upfront portion of the home price you pay in cash. The rest is usually financed through a mortgage loan.

What is loan-to-value ratio?

LTV compares the loan amount to the home price. A lower LTV means you are borrowing less relative to the value of the home.

Does a larger down payment lower monthly payments?

Yes. A larger down payment reduces the amount borrowed, which lowers monthly principal and interest payments.

Should I include closing costs?

Yes, if you want a better estimate of the total cash you may need upfront at closing.

Can I enter the down payment as a percent?

Yes. This calculator lets you enter the down payment either as a dollar amount or a percentage of the home price.