.calc-container {
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen-Sans, Ubuntu, Cantarell, "Helvetica Neue", sans-serif;
max-width: 800px;
margin: 20px auto;
padding: 25px;
border: 1px solid #e1e1e1;
border-radius: 8px;
background-color: #f9f9f9;
color: #333;
}
.calc-header {
text-align: center;
margin-bottom: 25px;
}
.calc-grid {
display: grid;
grid-template-columns: 1fr 1fr;
gap: 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: 5px;
font-size: 14px;
}
.input-group input {
width: 100%;
padding: 10px;
border: 1px solid #ccc;
border-radius: 4px;
box-sizing: border-box;
}
.calc-btn {
grid-column: span 2;
background-color: #0073aa;
color: white;
padding: 15px;
border: none;
border-radius: 4px;
font-size: 18px;
font-weight: bold;
cursor: pointer;
transition: background-color 0.3s;
margin-top: 10px;
}
@media (max-width: 600px) {
.calc-btn { grid-column: span 1; }
}
.calc-btn:hover {
background-color: #005177;
}
.result-box {
margin-top: 25px;
padding: 20px;
background-color: #fff;
border: 2px solid #0073aa;
border-radius: 8px;
display: none;
}
.result-row {
display: flex;
justify-content: space-between;
margin-bottom: 10px;
border-bottom: 1px solid #eee;
padding-bottom: 5px;
}
.result-row:last-child {
border-bottom: none;
}
.result-label { font-weight: 600; }
.result-value { color: #0073aa; font-weight: bold; }
.main-payment {
font-size: 24px;
text-align: center;
color: #d63638;
margin-bottom: 20px;
}
.article-section {
margin-top: 40px;
line-height: 1.6;
}
.article-section h2 { color: #23282d; }
.article-section h3 { color: #32373c; }
Vehicle Price / MSRP ($)
Negotiated Price ($)
Down Payment ($)
Trade-in Allowance ($)
Lease Term (Months)
Residual Value (%)
Interest Rate / APR (%)
Sales Tax (%)
Calculate Monthly Payment
Estimated Monthly Payment:
Gross Capitalized Cost:
Residual Value:
Monthly Depreciation:
Monthly Rent Charge (Interest):
Monthly Sales Tax:
How Auto Lease Payments Are Calculated
Leasing a vehicle is often more complex than traditional financing. Unlike a loan where you pay for the entire value of the car, a lease only covers the vehicle's depreciation during the time you drive it, plus interest and taxes.
Key Terms to Understand
Gross Capitalized Cost: This is the "selling price" of the car plus any added fees or service contracts.Capitalized Cost Reduction: This includes your down payment, trade-in equity, and any manufacturer rebates that lower the amount being financed.Residual Value: An estimate of what the car will be worth at the end of the lease. This is set by the leasing company and expressed as a percentage of the original MSRP.Money Factor: This represents the interest rate. To convert Money Factor to APR, multiply it by 2400. To convert APR to Money Factor, divide it by 2400.
The Math Behind the Payment
A lease payment consists of three main components:
Depreciation Fee: (Adjusted Cap Cost – Residual Value) ÷ Term.Rent Charge (Interest): (Adjusted Cap Cost + Residual Value) × Money Factor.Sales Tax: In most states, tax is applied to the monthly payment rather than the full price of the vehicle.
Example Calculation
If you lease a car with a $35,000 MSRP for a negotiated price of $32,000 , put $2,000 down , and the 36-month residual is 60% ($21,000) with a 4.5% APR:
Adjusted Cap Cost: $32,000 – $2,000 = $30,000
Depreciation: ($30,000 – $21,000) / 36 = $250.00
Rent Charge: ($30,000 + $21,000) * (0.045 / 2400) = $95.63
Base Payment: $345.63
function calculateLease() {
var msrp = parseFloat(document.getElementById("msrp").value);
var negotiatedPrice = parseFloat(document.getElementById("negotiatedPrice").value);
var downPayment = parseFloat(document.getElementById("downPayment").value) || 0;
var tradeIn = parseFloat(document.getElementById("tradeIn").value) || 0;
var leaseTerm = parseFloat(document.getElementById("leaseTerm").value);
var residualPercent = parseFloat(document.getElementById("residualPercent").value);
var apr = parseFloat(document.getElementById("apr").value);
var salesTax = parseFloat(document.getElementById("salesTax").value) || 0;
if (isNaN(msrp) || isNaN(negotiatedPrice) || isNaN(leaseTerm) || isNaN(residualPercent) || isNaN(apr)) {
alert("Please enter valid numbers in all required fields.");
return;
}
// Calculations
var adjCapCost = negotiatedPrice – downPayment – tradeIn;
var residualValue = msrp * (residualPercent / 100);
var moneyFactor = apr / 2400;
// 1. Depreciation Part
var totalDepreciation = adjCapCost – residualValue;
if (totalDepreciation < 0) totalDepreciation = 0;
var monthlyDepreciation = totalDepreciation / leaseTerm;
// 2. Rent Charge (Interest) Part
var monthlyRentCharge = (adjCapCost + residualValue) * moneyFactor;
// 3. Tax Part
var basePayment = monthlyDepreciation + monthlyRentCharge;
var monthlyTaxAmount = basePayment * (salesTax / 100);
// Total
var totalMonthlyPayment = basePayment + monthlyTaxAmount;
// Display Results
document.getElementById("leaseResult").style.display = "block";
document.getElementById("totalMonthly").innerText = "$" + totalMonthlyPayment.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
document.getElementById("grossCapCost").innerText = "$" + adjCapCost.toLocaleString();
document.getElementById("resValAmount").innerText = "$" + residualValue.toLocaleString();
document.getElementById("monthlyDepreciation").innerText = "$" + monthlyDepreciation.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
document.getElementById("monthlyRentCharge").innerText = "$" + monthlyRentCharge.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
document.getElementById("monthlyTax").innerText = "$" + monthlyTaxAmount.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2});
}