Mortgages

Down Payment Calculator

Calculate down payment amounts, loan balances, monthly mortgage impact, and PMI requirements for home and vehicle purchases.

What this calculator does

The Down Payment Calculator estimates your result instantly from the values you enter, using standard mortgages formulas. Calculate down payment amounts, loan balances, monthly mortgage impact, and PMI requirements for home and vehicle purchases. Calculations run in your browser, so nothing you type is sent to a server, and the output is an estimate for planning rather than financial advice.

About Down Payment Calculator

The Down Payment Calculator helps buyers evaluate how different down payment amounts impact loan sizes, monthly payments, PMI requirements, and total interest.

Formula & Mathematical Calculation

Down Payment ($) = Purchase Price × ( Down Payment % / 100 )

Loan Amount = Purchase Price - Down Payment ($)

Calculation Example

$400,000 Home: 5% Down ($20k) = $2,576/mo (with PMI). 20% Down ($80k) = $2,022/mo (No PMI!). Saves $554/month.

Key Benefits

  • Compares 3%, 5%, 10%, and 20% down payment scenarios side-by-side
  • Shows exact monthly PMI savings when reaching 20% equity
  • Calculates required cash needed at closing
  • Identifies lifetime interest savings from higher down payments
  • Applicable to both real estate and auto loan purchases

How to Use this Calculator

  1. Enter Purchase Price
    Input target property or vehicle purchase price.
  2. Specify Down Payment %
    Enter dollar amount or standard percentage.
  3. Compare Payment Scenarios
    Click Calculate to view monthly payment differences and PMI elimination.

Assumptions & Limitations

What the calculation assumes

  • Every value you enter is treated as an exact, known amount.
  • Rates and contributions are assumed to stay constant for the whole period unless the form asks for them separately.
  • Results use standard financial formulas and ignore fees, penalties and promotional terms that are not entered above.
  • Inflation, tax changes and market volatility are not modelled unless a field for them is provided.
  • Amounts are unit-agnostic: results are returned in the same currency you enter.

What it does not cover

  • Down Payment Calculator produces estimates for education and planning, not a quote, offer or professional advice.
  • Real-world outcomes differ when fees, taxes, rounding rules or provider-specific terms apply.
  • Local regulations and tax rules vary by country and change over time; verify current rules for your jurisdiction.
  • Figures are only as accurate as the inputs you supply — check them before acting on the result.
  • For decisions with lasting financial impact, confirm the numbers with a qualified professional.

Frequently Asked Questions

Putting down less than 20% on a conventional home loan requires lenders to mandate PMI to protect against default. A larger down payment reduces both the loan-to-value ratio and the specific annual PMI premium percentage.

Standard conventional loans allow down payments as low as 3% for first-time buyers; FHA loans require 3.5%; and zero-down options exist via VA loans (for eligible veterans) and USDA loans (for eligible rural properties).

No. Draining liquid savings to hit 20% down leaves new homeowners vulnerable to unexpected moving costs, property repairs, and maintenance emergencies. Maintaining a 3 to 6-month liquid reserve is prioritized over avoiding PMI.

A larger down payment directly reduces the loan balance, lowering monthly principal and interest charges. Furthermore, lenders often grant lower risk-based interest rate pricing to borrowers putting down 20% or more.

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Next step: browse the full Mortgages calculators or read the related guides for context before you decide.