Quick answer
Down payment = price × percent ÷ 100, and the loan = price − down payment. 20% on a $350,000 home is $70,000, leaving a $280,000 loan.
Enter the home price and the down payment percentage. The calculator returns the down payment and loan amount.
Related tools: Refinance Calculator: Monthly savings and break-even time from refinancing. House Affordability Calculator: Estimate the most expensive home your income supports. APR Calculator: Annual percentage rate of a loan once upfront fees are counted.
How to use the Down Payment Calculator
- Enter home price ($) (above 0).
- Enter down payment (%) (between 0 and 100). It starts at 20.
- Press Calculate to see the result, and use Reset to start again.
| Input | What to enter | Allowed values |
|---|---|---|
| Home price | A number, in $ | > 0 |
| Down payment | A number, in % | ≥ 0, ≤ 100, starts at 20 |
Formula and method
Formula
down payment = price × percent ÷ 100; loan = price − down payment
IEEE-754 double precision; money shown to cents, rates to 4 decimals. Results are estimates, not financial advice.
A straight percentage of the purchase price.
Worked examples
These examples are verified: each one is an automated test case that the live calculator must reproduce exactly.
Example 1
Inputs: Home price = 350000; Down payment = 20.
| Result | Value |
|---|---|
| Down payment | $70,000.00 |
| Loan amount | $280,000.00 |
Example 2
Inputs: Home price = 275000; Down payment = 3.5.
| Result | Value |
|---|---|
| Down payment | $9,625.00 |
| Loan amount | $265,375.00 |
The first line is the headline result (down payment). Below it the down Payment Calculator lists loan amount, which describe the same case from other angles. IEEE-754 double precision; money shown to cents, rates to 4 decimals. Results are estimates, not financial advice.
Why 20%
A 20% down payment usually avoids private mortgage insurance on conventional loans. Lower down payments are possible, such as 3.5% with FHA or 0% with VA, but increase the loan and the monthly cost.
Saving for it
To save $70,000 in five years you'd set aside about $1,167 a month without interest. Closing costs are on top of the down payment. A 0% down payment finances the entire price.
How the result changes with home price
Holding every other input at the first worked example, this table changes only home price. It shows how sensitive the answer is to that one value; each row was produced by running this calculator.
| Home price | Down payment | Loan amount |
|---|---|---|
| 175000 | $35,000.00 | $140,000.00 |
| 350000 | $70,000.00 | $280,000.00 |
| 700000 | $140,000.00 | $560,000.00 |
| 1400000 | $280,000.00 | $1,120,000.00 |
What happens with invalid input
These messages are produced by the calculator itself, so you know what to fix.
- Home price: entering "0" shows "Home price must be greater than 0." beside that field and no result.
- Down payment: entering "120" shows "Down payment must be at most 100." beside that field and no result.
Choosing between the Down Payment Calculator and similar calculators
Each row shows what a related calculator on this site asks for and what it returns, so you can pick the one that matches your question.
| Calculator | You enter | It returns |
|---|---|---|
| [Refinance Calculator](/finance/refinance-calculator/) | current balance, current rate and current remaining term | Monthly savings |
| [House Affordability Calculator](/real-estate/house-affordability-calculator/) | annual gross income, other monthly debt payments and down payment | Estimated maximum home price |
| [APR Calculator](/finance/apr-calculator/) | loan amount, upfront fees and note rate | APR |
| [Amortization Calculator](/finance/amortization-calculator/) | loan amount, interest rate and term | Monthly payment |
| [Mortgage Calculator](/real-estate/mortgage-calculator/) | home price, down payment and interest rate | Total monthly payment |
Background: loans and mortgages
The interest rate is the cost of borrowing the principal; the APR also folds in certain fees, so a lower rate with high fees can have a worse APR. These calculators use the rate you enter and do not add fees, insurance or taxes, so add fees to the principal if you want to include them.
A fixed-rate loan is paid in equal instalments, early ones mostly interest. Extra payments go straight to principal, which shortens the loan and cuts interest; adjustable rates, escrow changes and prepayment penalties are not modelled.
Assumptions and limitations
- 0% leaves the whole price financed
Estimates only. Taxes, fees and lender or authority rules vary by place and date, so confirm figures with the relevant authority or professional.
If a required value is empty, not a number, or outside its allowed range, the form marks that field with a message and shows no result instead of a misleading number. The automated checks deliberately try invalid entries for home price and down payment to confirm this.
Frequently asked questions
How much is 10% down on $350,000?
10% of $350,000 is $35,000, leaving a $315,000 loan.
Is 20% required?
No. Many loans need less: 3.5% for FHA, 3% to 5% for some conventional loans and 0% for VA, though under 20% usually adds mortgage insurance.
Does a bigger down payment lower the rate?
Often it lowers the rate or avoids PMI.
What does the Down Payment Calculator calculate?
Down payment amount and loan size from a percentage. It returns Down payment and Loan amount.
What formula does the Down Payment Calculator use?
down payment = price × percent ÷ 100; loan = price − down payment. A straight percentage of the purchase price.
What do I need to enter in the down Payment Calculator?
You enter Home price ($) and Down payment (%).
How is the result rounded or limited?
IEEE-754 double precision; money shown to cents, rates to 4 decimals. Results are estimates, not financial advice. 0% leaves the whole price financed.
What is an example of a down Payment result?
With home price 350000 and down payment 20, the down payment is $70,000.00.
Can I rely on this calculator for a decision?
Estimates only. Taxes, fees and lender or authority rules vary by place and date, so confirm figures with the relevant authority or professional. For this calculator in particular: 0% leaves the whole price financed.
Related calculators
- Refinance Calculator — Monthly savings and break-even time from refinancing.
- House Affordability Calculator — Estimate the most expensive home your income supports.
- APR Calculator — Annual percentage rate of a loan once upfront fees are counted.
- Amortization Calculator — Full amortization schedule with optional extra monthly payments.
- Mortgage Calculator — Monthly mortgage payment with property tax, insurance and HOA.
- VA Mortgage Calculator — Monthly payment with a financed funding fee you enter.
- Canadian Mortgage Calculator — Monthly payment with semi-annual compounding of the quoted rate.
- FHA Loan Calculator — Monthly payment with upfront and annual mortgage insurance premiums you enter.
Sources
- Standard time-value-of-money relations (e.g. Brealey, Myers & Allen, Principles of Corporate Finance)
Content last reviewed 2026-11-04. Formulas and worked examples are checked by automated tests against independently computed values.