Auto Lease Calculator

Estimate monthly payment, due at signing, and total lease cost. Supports money factor or APR, residual %, taxes, and fees.

How to Use

  1. Enter MSRP and negotiated price (cap cost) details.
  2. Set term (months), residual (percent or dollars), and money factor (or APR).
  3. Add taxes, fees, down payment, trade-in, and incentives if applicable.
  4. Open “Show Work” to see each step of the lease math.
  5. Use “Share Link” to generate a URL that restores inputs later.
Lease Summary
Live estimate updates as you type (no URL updates until Share).
Monthly
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Due at signing
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Total cost
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Effective / mo
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Depreciation / mo—
Finance (rent) / mo—
Tax / mo—

Tip: If you only know APR, enter it and the calculator will convert to money factor.

Inputs & Settings
Enter values below. Results update instantly. Share URL only via button.
Sticker price (used for residual % calculation).
Before incentives, trade, and down payment.
Common: 24, 36, 39, 48.
Optional: for reference only (does not change math unless you use it to pick residual).
Choose percent or dollar residual input.
Example: 58% residual, or $26,100 residual.
MF ≈ APR ÷ 2400.
Money factor like 0.00125, or APR like 4.2%
Reduces cap cost (often not recommended if vehicle is totaled/stolen).
If applied as cap reduction.
Applied as cap reduction (if eligible).
Often added to cap cost unless paid upfront.
Combined fees (you can split later if you want).
Tax rules vary by state—this is an estimate using your chosen mode.
Often refundable; included in due-at-signing.
Show Work (step-by-step)
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Work is shown using standard lease components: adjusted cap cost, residual, depreciation, rent charge, and taxes (mode-dependent).

Lease Formulas (Reference)

This tool uses common lease math terms. Exact taxation rules vary by state and contract.

  • Residual (percent): residual$ = MSRP × (residual% ÷ 100)
  • Adjusted cap cost: cap_adj = sellPrice + (rolled fees) − cap_reductions
  • Depreciation / mo: (cap_adj − residual$) ÷ termMonths
  • Rent charge / mo: (cap_adj + residual$) × moneyFactor
  • Base payment / mo: depreciation + rent
  • Tax / mo (monthly mode): base × (taxRate ÷ 100)
Money factor is commonly approximated from APR: MF ≈ APR ÷ 2400.

FAQ

What is “money factor”?

Money factor is the finance-rate component of a lease. Many lenders quote MF instead of APR.

Is putting money down on a lease smart?

Often not. If the vehicle is totaled/stolen, cap reduction may be lost. This tool still supports it for comparison.

Why doesn’t my dealer payment match exactly?

Tax rules, fees, rounding, incentives, and lender-specific policies vary. Use this as a clean estimate and validation tool.

Tool Info

Last updated:

Updates may include tax-mode improvements, fee handling, rounding rules, and additional lease disclosure fields.