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Down Payment Calculator

Enter a home price and a percent or cash amount to see the down payment, loan amount, and loan-to-value ratio.

Home and down payment

Common

Everything runs in your browser. Nothing is uploaded.

Down payment
80,000.00
20% of the 400,000.00 home price
320,000.00
Loan amount
80%
Loan-to-value ratio

Private mortgage insurance not expected

At 20% down, the loan-to-value is 80%, at or below 80%, so lenders typically skip private mortgage insurance.

This covers the down payment, loan amount, and loan-to-value only. Closing costs, property taxes, and the exact private mortgage insurance rate depend on your lender.

How to calculate a down payment

  1. Enter the home price

    Type the purchase price of the home you are buying.

  2. Set the down payment

    Enter the down payment as a percent of the price or as a fixed cash amount, and the tool keeps both in sync.

  3. Read the results

    The down payment amount, loan amount, and loan-to-value ratio update instantly, with a note whenever mortgage insurance is likely.

Why use this tool

Percent or cash, always in sync

Enter the down payment either way and the other value updates automatically, so you can start from a target percentage or from the savings you have.

Automatic mortgage insurance flag

A down payment under 20% raises the loan-to-value above 80%, which usually triggers private mortgage insurance. The tool flags it and shows how much more you would need to reach 20%.

Loan-to-value up front

The loan amount and loan-to-value ratio sit next to the down payment, which is exactly what a lender looks at first.

Common down payment presets

One tap sets a 3%, 5%, 10%, 15%, or 20% down payment, so you can compare the usual options in seconds.

No currency assumptions

Results are plain numbers without a symbol, so the same math works for dollars, euros, pounds, or anything else.

Runs entirely in your browser

Your home price and savings are calculated on your device and nothing is uploaded, stored, or logged.

About this tool

A down payment is the cash you pay up front when buying a home, with the rest covered by a loan. This calculator takes the home price and your down payment, entered as either a percent or a fixed cash amount, and works out the three numbers a lender cares about first: the down payment in money, the loan amount you would borrow, and the loan-to-value ratio. Loan-to-value, or LTV, is the loan divided by the price, so a larger down payment means a lower LTV and a smaller loan.

Lenders watch the 20% mark closely. Put down less than 20% and your LTV climbs above 80%, which usually triggers private mortgage insurance, a monthly cost that protects the lender and adds nothing for you. The tool flags that automatically and shows how much more you would need to reach 20%. Because the percent and cash amount stay linked, you can plan from a target percentage or from the savings you actually have. To estimate the monthly payment as well, use the mortgage calculator or the loan calculator.

Everything is calculated on your device as you type, and nothing about your home price or savings is uploaded, stored, or logged. Results are shown as plain numbers so the same math works in any currency. This page covers the down payment, loan amount, and loan-to-value only: closing costs, property taxes, and the exact private mortgage insurance rate depend on your lender, so treat the output as a planning estimate and confirm the details before you buy.

Frequently asked questions

How do I calculate a down payment?
Multiply the home price by your down payment percent, or enter the cash amount directly. A 20% down payment on a 400,000 home is 80,000, which leaves a 320,000 loan. This tool does both directions and keeps the percent and cash amount in sync.
What is loan-to-value (LTV)?
Loan-to-value is the loan amount divided by the home price, shown as a percent. A 20% down payment leaves an 80% LTV. A lower LTV means you are borrowing less against the property, which lenders view as lower risk.
When do I have to pay private mortgage insurance?
Lenders usually require private mortgage insurance when the down payment is under 20%, meaning the loan-to-value is above 80%. This tool flags that case and shows how much more you would need to put down to reach 20% and avoid it.
Can I enter the down payment as a dollar amount instead of a percent?
Yes. Switch the down payment field between percent and cash with the toggle beside it. Whichever you type, the other value updates automatically from the home price.
What if the down payment is larger than the home price?
That is not a valid purchase, so the tool shows a short warning instead of a negative loan. Lower the down payment to at or below the home price, or keep the percent at 100% or less.
Is my data private?
Yes. The home price and down payment never leave your device. All calculations run in your browser and nothing is uploaded, stored, or logged.

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