Down Payment Calculator: Estimate Down Payment & LTV

A down payment changes two parts of a home purchase at once: how much cash goes into the purchase and how much remains to finance. Compare the dollar amount, percentage and resulting loan-to-value ratio without turning the decision into a full mortgage-payment estimate.

How to Use the Down Payment Calculator

Enter the home price, then edit the down payment in either dollars or as a percentage. Editing either field updates the other automatically so the same scenario can be viewed in both formats.

Prefilled values are illustrative examples rather than market averages or minimum requirements. Closing costs are kept separate from the down-payment input.

Results include the planned down payment, estimated loan amount and purchase-price LTV. A comparison table also shows several common down-payment levels for the same home price.

What the Results Mean

Planned down payment is the cash applied directly to the purchase price. On a $400,000 home, 10% equals $40,000.

Estimated loan amount is the purchase price minus that down payment. Using the same example leaves $360,000 to finance before any program-specific financed fees.

Purchase-price LTV compares the estimated loan with the entered purchase price. A $360,000 loan against a $400,000 price produces a 90% ratio.

Actual lender LTV can differ. For many conventional purchase transactions, the value used for underwriting is the lower of the sales price or current appraised value, so a low appraisal can raise the lender-calculated LTV.

How Down Payment Changes the Mortgage

Every additional dollar applied to the purchase price reduces the amount that must be financed by one dollar. Monthly payment and interest effects depend on the mortgage rate and term, which belong in a separate payment calculation.

• Lower loan principal: less money must be borrowed.
• Lower LTV: more purchase equity is created at closing.
• Potential mortgage-insurance impact: conventional loans with less than 20% down commonly require PMI.
• Less liquid cash: money used for the down payment is no longer available for closing, repairs or reserves.

The mortgage calculator is the better next step when rate, term, taxes, insurance, mortgage insurance and HOA costs need to be included.

Twenty Percent Is a PMI Reference, Not a Universal Minimum

A 20% down payment is meaningful for conventional financing because borrower-paid private mortgage insurance is commonly required below that level. Current CFPB guidance still treats less than 20% down as a typical mortgage-insurance trigger, but mortgage options with smaller down payments remain widely available.

Reaching 20% is not automatically the best household decision. Using nearly all available cash to avoid PMI can leave too little for closing costs, repairs, moving expenses or emergency reserves.

Review output shows how much more cash would be needed to reach 20% without labeling that amount as required. Enter a different percentage whenever another target better fits the actual mortgage or cash plan.

Low- and No-Down-Payment Options Exist

Qualified borrowers can have mortgage options below 20% down. Eligibility, property requirements, income rules, credit standards and fees vary by program.

Program minimums do not establish the right down payment for a particular buyer. Pricing, mortgage insurance, available cash and the complete loan file still matter.

Down Payment and Closing Costs Are Separate

Down payment is only one component of the cash needed for a purchase. Closing costs, prepaid taxes and insurance, deposits, lender or seller credits and other adjustments can change actual cash to close.

Keeping those amounts separate avoids false precision. The closing cost calculator can provide an early estimate, while the lender’s Loan Estimate provides transaction-specific figures later in the process.

Cash reserves deserve separate attention as well. A larger down payment can lower the loan amount but also reduce the cushion available after closing.

How to Choose a Down Payment

Percentage alone does not determine whether a purchase is comfortable. Compare the down payment with the cash that remains afterward and with the mortgage terms available at different LTV levels.

• Check remaining cash: leave room for closing, moving, repairs and emergency savings.
• Price another 1%: the calculator shows how much each percentage point costs in dollars.
• Compare mortgage insurance: use an actual lender estimate instead of assuming one universal PMI rate.
• Test a lower home price: a smaller price reduces both the cash needed at a given percentage and the amount financed.
• Review eligible programs: down-payment and funding-source rules differ across mortgage types.

Income and recurring debts create a separate affordability constraint. The home affordability calculator can test that side of the decision.

How the Calculator Works

Comparison table uses the same arithmetic for 3%, 5%, 10%, 20% and the selected percentage. Each checkpoint is a comparison only, not an approval threshold or recommendation.

Currency is rounded to the nearest dollar for display. The calculator does not estimate interest rates, monthly mortgage payments, mortgage-insurance premiums, closing costs, reserves, appraisal gaps, debt-to-income ratios or approval.