.lease-calculator-container {
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
max-width: 800px;
margin: 20px auto;
padding: 25px;
border: 1px solid #e1e1e1;
border-radius: 12px;
background-color: #ffffff;
box-shadow: 0 4px 6px rgba(0,0,0,0.05);
color: #333;
}
.lease-calculator-container h2 {
color: #1a1a1a;
text-align: center;
margin-bottom: 25px;
font-size: 24px;
}
.calc-grid {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 20px;
margin-bottom: 20px;
}
@media (max-width: 600px) {
.calc-grid { grid-template-columns: 1fr; }
}
.input-group {
margin-bottom: 15px;
}
.input-group label {
display: block;
font-weight: 600;
margin-bottom: 8px;
font-size: 14px;
}
.input-group input {
width: 100%;
padding: 12px;
border: 1px solid #ccc;
border-radius: 6px;
font-size: 16px;
box-sizing: border-box;
}
.calculate-btn {
width: 100%;
background-color: #0056b3;
color: white;
padding: 15px;
border: none;
border-radius: 6px;
font-size: 18px;
font-weight: bold;
cursor: pointer;
transition: background 0.3s;
}
.calculate-btn:hover {
background-color: #004494;
}
.results-box {
margin-top: 30px;
padding: 20px;
background-color: #f8f9fa;
border-radius: 8px;
display: none;
}
.results-box h3 {
margin-top: 0;
text-align: center;
color: #2c3e50;
}
.result-item {
display: flex;
justify-content: space-between;
padding: 10px 0;
border-bottom: 1px solid #eee;
}
.result-item:last-child {
border-bottom: none;
font-weight: bold;
font-size: 1.2em;
color: #d9534f;
}
.article-section {
margin-top: 40px;
line-height: 1.6;
color: #444;
}
.article-section h3 {
color: #1a1a1a;
margin-top: 25px;
}
Auto Lease Payment Calculator
Vehicle MSRP ($)
Negotiated Sale Price ($)
Down Payment ($)
Trade-in Value ($)
Residual Value (%)
Lease Term (Months)
Money Factor (e.g. 0.00125)
Sales Tax (%)
Calculate Monthly Payment
Lease Summary
Gross Capitalized Cost:
Residual Value Amount:
Monthly Depreciation:
Monthly Rent Charge:
Monthly Sales Tax:
Total Monthly Payment:
How Car Lease Payments are Calculated
Understanding car lease math is the best way to ensure you are getting a fair deal at the dealership. Unlike a standard car loan where you pay down the entire value of the vehicle, a lease only charges you for the portion of the car's value you "use" during the lease term.
Key Components of Your Lease
Gross Capitalized Cost: This is the negotiated price of the vehicle plus any added fees or service contracts.Residual Value: This is the predicted value of the car at the end of the lease. It is set by the bank and expressed as a percentage of the MSRP.Money Factor: This is the interest rate on a lease. To convert a money factor to a standard APR, multiply it by 2,400. For example, a money factor of 0.00125 equals a 3% APR.Capitalized Cost Reduction: This includes your down payment, trade-in equity, and any manufacturer rebates that reduce the amount being financed.
The Math Behind the Payment
The monthly payment consists of three parts:
Depreciation Fee: (Adjusted Cap Cost – Residual Value) / Lease Term.Rent Charge: (Adjusted Cap Cost + Residual Value) × Money Factor.Sales Tax: Usually applied to the sum of the depreciation and rent charges.
Example Calculation
Suppose you lease a car with an MSRP of $40,000 and a negotiated price of $38,000. You put $2,000 down. The 36-month residual is 60% ($24,000), and the money factor is 0.0015.
Adjusted Cap Cost: $38,000 – $2,000 = $36,000Monthly Depreciation: ($36,000 – $24,000) / 36 = $333.33Monthly Rent Charge: ($36,000 + $24,000) × 0.0015 = $90.00Subtotal: $423.33 + Tax
function calculateLease() {
var msrp = parseFloat(document.getElementById("msrp").value);
var salePrice = parseFloat(document.getElementById("salePrice").value);
var downPayment = parseFloat(document.getElementById("downPayment").value) || 0;
var tradeIn = parseFloat(document.getElementById("tradeIn").value) || 0;
var residualPercent = parseFloat(document.getElementById("residualValue").value);
var leaseTerm = parseFloat(document.getElementById("leaseTerm").value);
var moneyFactor = parseFloat(document.getElementById("moneyFactor").value);
var taxRate = parseFloat(document.getElementById("salesTax").value);
if (isNaN(msrp) || isNaN(salePrice) || isNaN(residualPercent) || isNaN(leaseTerm) || isNaN(moneyFactor)) {
alert("Please fill in all required fields with valid numbers.");
return;
}
// 1. Calculate Adjusted Capitalized Cost
var adjustedCapCost = salePrice – downPayment – tradeIn;
// 2. Calculate Residual Value Amount
var residualAmount = msrp * (residualPercent / 100);
// 3. Monthly Depreciation Fee
var depreciationFee = (adjustedCapCost – residualAmount) / leaseTerm;
if (depreciationFee < 0) depreciationFee = 0;
// 4. Monthly Rent Charge (Interest)
var rentCharge = (adjustedCapCost + residualAmount) * moneyFactor;
// 5. Monthly Sales Tax
var monthlyTax = (depreciationFee + rentCharge) * (taxRate / 100);
// 6. Total Monthly Payment
var totalPayment = depreciationFee + rentCharge + monthlyTax;
// Display Results
document.getElementById("resGrossCap").innerText = "$" + adjustedCapCost.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
document.getElementById("resResidualAmt").innerText = "$" + residualAmount.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
document.getElementById("resDepreciation").innerText = "$" + depreciationFee.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
document.getElementById("resRent").innerText = "$" + rentCharge.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
document.getElementById("resTax").innerText = "$" + monthlyTax.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
document.getElementById("resTotal").innerText = "$" + totalPayment.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
document.getElementById("results").style.display = "block";
}