Interactive explainer
How the Down Payment works
Use this explainer to translate saved cash into down payment percent, loan amount, and loan-to-value.
Live explainer
Adjust the assumptions
Change inputs here to see the same calculation logic update immediately.
Enter the home price.
Enter the cash available.
Immediate results
Down Payment %
20.00%
Loan Amount
$240,000.00
LTV Ratio
80.00%
Sensitivity analysis
Cash available and purchase price directly drive down payment percent. A higher price can lower the percent even if cash is unchanged.
| Input | Scenario | Input value | Output | Output value |
|---|---|---|---|---|
| Home Price | -10% | $270,000.00 | Down Payment % | 22.22% |
| Home Price | Current | $300,000.00 | Down Payment % | 20.00% |
| Home Price | +10% | $330,000.00 | Down Payment % | 18.18% |
| Cash Available | -10% | $54,000.00 | Down Payment % | 18.00% |
| Cash Available | Current | $60,000.00 | Down Payment % | 20.00% |
| Cash Available | +10% | $66,000.00 | Down Payment % | 22.00% |
Formula and calculation model
Easily calculate the dollar amount for a specific down payment percentage, or find the percentage if you have a specific cash amount. Shows loan-to-value (LTV) ratio.
Input definitions
Home Price
The purchase price of the property.
Cash Available
Money saved specifically for the down payment (not including closing costs).
What the results mean
Down payment percent
The share of purchase price paid upfront in cash.
LTV ratio
The share of the purchase price financed by the loan.
Common mistakes
Using all available cash
Closing costs and reserves are separate from the down payment.
Keep emergency reserves outside this down payment amount.
Confusing down payment with LTV
Down payment percent and LTV move in opposite directions.
Use both outputs to understand cash upfront and lender exposure.
Scenario and industry examples
Scenario
Twenty percent target
A common no-PMI planning threshold.
Scenario
Low-down-payment option
Shows the effect of financing more of the purchase price.
Residential mortgage
First-time buyer savings
Set a savings target for 5 percent, 10 percent, or 20 percent down.
Real estate
Offer planning
Check whether a higher offer still keeps the down payment percent acceptable.
Glossary
- LTV
- Loan-to-Value Ratio. The loan amount divided by the home value. Higher LTV = Higher Risk.
- PMI
- Private Mortgage Insurance. Required if down payment is less than 20%.
FAQ clusters
Down payment planning
Should I use this result as a loan approval?
No. Use it as a planning estimate, then verify eligibility, rates, reserves, and program rules with a lender.
Why do small input changes move the result so much?
Housing and loan calculators compound assumptions across interest, term, principal, and recurring costs, so rate or debt changes can have a large monthly effect.