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Car Lease Payment Calculator

Results Summary

Estimated Monthly Payment:

Depreciation Fee:
Finance Fee (Rent):
Sales Tax:
Residual Value:

How to Use the Car Lease Payment Calculator

Leasing a car can be a complex financial decision, often involving jargon like "Money Factor" and "Residual Value." This calculator simplifies the process by breaking down your monthly payment into its three core components: depreciation, rent charge (interest), and taxes.

Key Terms Defined

  • MSRP: The Manufacturer's Suggested Retail Price (sticker price).
  • Negotiated Price: The actual price you agree to pay for the car before incentives and down payments. This is often called the Gross Capitalized Cost.
  • Residual Value: The estimated value of the car at the end of the lease term. It is usually a percentage of the MSRP.
  • Money Factor: This is the interest rate on a lease. To find the equivalent APR, multiply the money factor by 2400 (e.g., 0.00125 * 2400 = 3% APR).
  • Lease Term: The duration of the lease, typically 24, 36, or 48 months.

The Lease Calculation Formula

The math behind a car lease differs significantly from a traditional auto loan. Here is how your payment is calculated:

  1. Monthly Depreciation: (Adjusted Capitalized Cost – Residual Value) ÷ Term
  2. Monthly Rent Charge: (Adjusted Capitalized Cost + Residual Value) × Money Factor
  3. Monthly Sales Tax: (Monthly Depreciation + Monthly Rent Charge) × Tax Rate

Example Scenario

Imagine you are leasing a SUV with an MSRP of $40,000. You negotiate the price down to $38,000 and put $3,000 down. If the residual value is 60% ($24,000) for a 36-month term with a money factor of 0.0015:

  • Adjusted Cap Cost: $35,000 ($38k – $3k)
  • Depreciation Fee: ($35,000 – $24,000) / 36 = $305.56
  • Rent Charge: ($35,000 + $24,000) * 0.0015 = $88.50
  • Base Payment: $394.06 (before taxes)

By understanding these numbers, you can negotiate better lease terms and ensure you are getting a fair deal from the dealership.

function calculateLease() { var msrp = parseFloat(document.getElementById("msrp").value); var negotiatedPrice = parseFloat(document.getElementById("negotiatedPrice").value); var downPayment = parseFloat(document.getElementById("downPayment").value) || 0; var tradeIn = parseFloat(document.getElementById("tradeIn").value) || 0; var residualPercent = parseFloat(document.getElementById("residualPercent").value); var leaseTerm = parseFloat(document.getElementById("leaseTerm").value); var moneyFactor = parseFloat(document.getElementById("moneyFactor").value); var salesTax = parseFloat(document.getElementById("salesTax").value) / 100; if (isNaN(msrp) || isNaN(negotiatedPrice) || isNaN(residualPercent) || isNaN(leaseTerm) || isNaN(moneyFactor)) { alert("Please enter valid numbers in all required fields."); return; } // 1. Calculate Residual Value var residualAmount = msrp * (residualPercent / 100); // 2. Calculate Adjusted Capitalized Cost var adjCapCost = negotiatedPrice – downPayment – tradeIn; // 3. Monthly Depreciation Fee var depreciationFee = (adjCapCost – residualAmount) / leaseTerm; if (depreciationFee < 0) depreciationFee = 0; // 4. Monthly Finance Fee (Rent Charge) var financeFee = (adjCapCost + residualAmount) * moneyFactor; // 5. Monthly Sales Tax (Applied to Depreciation + Finance) var monthlyTax = (depreciationFee + financeFee) * salesTax; // 6. Total Monthly Payment var totalPayment = depreciationFee + financeFee + monthlyTax; // Update UI document.getElementById("leaseResult").style.display = "block"; document.getElementById("totalMonthly").innerText = "$" + totalPayment.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2}); document.getElementById("depreciationPart").innerText = "$" + depreciationFee.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2}); document.getElementById("financePart").innerText = "$" + financeFee.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2}); document.getElementById("taxPart").innerText = "$" + monthlyTax.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2}); document.getElementById("residualAmt").innerText = "$" + residualAmount.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2}); // Smooth scroll to result document.getElementById("leaseResult").scrollIntoView({ behavior: 'smooth', block: 'nearest' }); }

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