Conventional Loan Down Payment: What Buyers Need to Know

Yes. Most conventional mortgages require a down payment, but the amount depends on the loan program, property, borrower, and lender requirements; some eligible borrowers may qualify for a conventional loan with no down payment. This calculator estimates a down payment and the loan amount from a home price and a chosen down-payment percentage; it does not determine eligibility or lender terms.

Formula

The calculator multiplies the home price by the down-payment percentage, then subtracts that amount from the price to estimate the loan principal.

• Down payment amount = home price × down-payment percentage ÷ 100.
• Estimated loan amount = home price − down payment amount.

price is the purchase price in dollars; pct is the selected down-payment percentage; down is the cash contribution toward the purchase in dollars; and loan is the estimated amount borrowed in dollars. The calculation assumes the price is fully funded by the down payment and mortgage; it excludes closing costs and other funds or financing.

Worked Example

Using the calculator’s default home price of $300,000 and down-payment percentage of 5%:

1. Convert the percentage to a decimal: 5 ÷ 100 = 0.05.
2. Calculate the down payment: $300,000 × 0.05 = $15,000.00.
3. Subtract it from the purchase price: $300,000 − $15,000 = $285,000.00 estimated loan amount.

Assumptions

• The entered price is the full purchase price and the percentage applies to that price.
• The estimate treats the down payment as the only amount paid toward the price before the mortgage.
• It does not include closing costs, prepaid expenses, taxes, insurance, mortgage insurance, escrow, lender fees, or other financing.
• This is a purchase-price calculation, not an approval, payment, or loan-cost estimate.

What “Conventional Loan” Means

A conventional mortgage is a home loan that is not insured or guaranteed through a government-backed mortgage program. Conventional loans may be made to borrowers with different down payments, credit profiles, property types, and loan purposes. The word “conventional” does not, by itself, specify a single required down-payment percentage.

Requirements vary by the specific loan product and lender, and may also depend on factors such as whether the home will be a primary residence, a second home, or an investment property; whether there are multiple units; and whether the application is for a purchase or refinance. The lender’s written terms are the source for a particular transaction. A calculator can show arithmetic, but cannot say which product a borrower qualifies for.

How Down Payments Affect the Loan

The down payment is the part of the purchase price the buyer pays rather than borrowing through the mortgage. If the price is $300,000 and the down payment is 5%, the contribution is $15,000 and the simple estimated mortgage principal is $285,000. A larger down payment reduces the amount borrowed, all else equal, but that does not establish what a lender will approve or what the full monthly housing cost will be.

Down-payment percentage is generally calculated against the purchase price in this basic example. Some transactions involve other details, such as a negotiated price change, eligible assistance, or costs paid separately. Those can change the cash needed at closing without changing this calculator’s basic formula. Ask the lender how it calculates the required contribution and which funds may count.

A down payment is not the same as total cash to close. Buyers may also need to account for closing charges and prepaid items, which are not represented by the percentage entered here. The exact categories and amounts depend on the transaction and lender documents.

Low and No-Down-Payment Possibilities

Some conventional loan options permit low down payments for eligible borrowers and properties. Certain conventional programs may also allow a zero-down-payment structure when their specific eligibility and assistance conditions are met. These are not universal features of every conventional mortgage, and “no down payment” does not necessarily mean no cash is needed to complete a purchase: closing costs, prepaid items, or other required funds may still apply.

Do not assume a 20% down payment is required for every conventional loan. A 20% contribution can affect whether private mortgage insurance is required under the applicable loan terms, but the precise treatment depends on the loan and lender. Conversely, putting down less than 20% does not automatically mean an application will be accepted or that one specific insurance arrangement will apply. Request a written estimate showing the down payment, mortgage amount, mortgage insurance if applicable, and other costs.

Choosing a Down-Payment Percentage

To compare possible contributions, enter a different percentage in the calculator and note both the cash amount and estimated loan amount. For example, at a $300,000 price, 3% is $9,000, 5% is $15,000, and 10% is $30,000. The corresponding simple loan estimates are $291,000, $285,000, and $270,000. These examples illustrate the formula only; they are not statements about eligibility or lender pricing.

• Check the lender’s minimum contribution for the particular loan and property.
• Ask whether the down payment must come from particular sources and what documentation is required.
• Get a breakdown of estimated closing costs and prepaid items separately from the down payment.
• Ask how the contribution changes the loan amount, mortgage insurance, and total payment under the quoted terms.
• Keep the figures distinct: purchase price, down payment, mortgage principal, and cash to close are not interchangeable.

Frequently Asked Questions

Can you get a conventional loan with no down payment?
Some eligible conventional options may allow no down payment, but this is not available for every borrower, property, or loan. Confirm the exact conditions and any separate cash-to-close requirements with the lender.

Is 20% down required for a conventional loan?
No, not as a universal rule. Conventional loan options can have different down-payment requirements. The applicable amount and any mortgage-insurance terms depend on the specific loan and lender.

What is the minimum down payment on a conventional loan?
There is no single minimum that applies to every conventional mortgage. It varies with the loan program and borrower and property circumstances. Ask the lender for the requirement that applies to the specific application.

Does a conventional loan with less than 20% down require mortgage insurance?
It may, depending on the applicable loan terms. Do not assume the amount, duration, or structure from the down-payment percentage alone; request those details in the lender’s written estimate.

Does the down payment include closing costs?
No. The down payment is applied toward the purchase price. Closing costs and prepaid items are separate amounts that may add to the cash needed for closing.

This calculator’s result is an estimate; the lender’s disclosure gives the exact figures.

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in price | Home price | $ | 300000 | 1 | 100000000
in pct | Down payment | % | 5 | 0 | 100
out down | Down payment amount | $ | price * pct / 100 | 2
out loan | Estimated loan amount | $ | price - down | 2