Auto Loan vs. Lease Cost Calculator

Auto Loan vs. Lease Cost Calculator

Common Vehicle & Cost Inputs

Negotiated price for buying, or MSRP for lease reference.
Applied to vehicle price for loan, and to payments/upfronts for lease.
Leases may require higher coverage.
Typically higher for owned vehicles over longer periods.

Auto Loan Details (Buying Option)

How long you plan to keep the car if you buy it.

Auto Lease Details

Includes down payment (cap cost reduction), first month, fees, etc.

Results & Comparison

Loan (Buying) Option

Calculations will appear here.

Lease Option

Calculations will appear here.

Comparison summary will appear here.

Total Insurance (over ${loan.ownershipDurationYears} yrs): $${loan.totalInsurance.toFixed(2)}

Total Maintenance (over ${loan.ownershipDurationYears} yrs): $${loan.totalMaintenance.toFixed(2)}

Estimated Resale Value: $${loan.resaleValue.toFixed(2)}


Total Upfront Cost: $${loan.totalUpfrontCost.toFixed(2)}

Total Cost of Buying (over ${loan.ownershipDurationYears} yrs): $${loan.totalCost.toFixed(2)}

Average Monthly Cost: $${loan.averageMonthlyCost.toFixed(2)}

`; const leaseBox = document.getElementById('alvlcLeaseResultsBox'); leaseBox.innerHTML = `

Lease Option

Lease Term: ${lease.leaseTermYears} years

Monthly Payment (before tax): $${lease.leaseMonthlyPaymentRaw.toFixed(2)}

Sales Tax (${(lease.salesTaxRate * 100).toFixed(2)}%): applied to payments & upfronts

Effective Monthly Payment (incl. tax): $${lease.leaseMonthlyPaymentWithTax.toFixed(2)}

Total Lease Payments (incl. tax): $${lease.totalLeasePayments.toFixed(2)}

Money Due at Signing (before tax): $${lease.leaseDueAtSigning.toFixed(2)}

Effective Due at Signing (incl. tax): $${lease.dueAtSigningWithTax.toFixed(2)}

Mileage Allowance: ${lease.leaseMileageAllowance.toLocaleString()} miles/year

Estimated Mileage Overage Cost: $${lease.mileageOverageCost.toFixed(2)}

Disposition Fee: $${lease.leaseDispositionFee.toFixed(2)}


Total Insurance (over ${lease.leaseTermYears} yrs): $${lease.totalInsurance.toFixed(2)}

Total Maintenance (over ${lease.leaseTermYears} yrs): $${lease.totalMaintenance.toFixed(2)}


Total Upfront Cost: $${lease.totalUpfrontCost.toFixed(2)}

Total Cost of Leasing (over ${lease.leaseTermYears} yrs): $${lease.totalCost.toFixed(2)}

Average Monthly Cost: $${lease.averageMonthlyCost.toFixed(2)}

`; const summaryDiv = document.getElementById('alvlcComparisonSummary'); let summaryText = `Comparing average monthly costs: Loan: $${loan.averageMonthlyCost.toFixed(2)} (over ${loan.ownershipDurationYears} yrs) vs. Lease: $${lease.averageMonthlyCost.toFixed(2)} (over ${lease.leaseTermYears} yrs).`; if (Math.abs(loan.averageMonthlyCost - lease.averageMonthlyCost) < 0.01) { summaryText += "
Both options have nearly identical average monthly costs over their respective terms."; } else if (loan.averageMonthlyCost < lease.averageMonthlyCost) { summaryText += `
Buying with a loan appears to have a lower average monthly cost.`; } else { summaryText += `
Leasing appears to have a lower average monthly cost.`; } summaryText += `
Note: This comparison is based on average monthly costs over potentially different durations (loan ownership vs. lease term). Consider the total costs and individual circumstances.`; summaryDiv.innerHTML = summaryText; } function alvlc_generatePdf() { const results = alvlc_calculateResults(); const loan = results.loan; const lease = results.lease; const { jsPDF } = window.jspdf; const doc = new jsPDF(); let yPos = 20; const primaryColor = getComputedStyle(document.documentElement).getPropertyValue('--primary-color').trim(); const accentColor = getComputedStyle(document.documentElement).getPropertyValue('--accent-color').trim(); const textColor = getComputedStyle(document.documentElement).getPropertyValue('--text-color').trim(); doc.setFontSize(20); doc.setTextColor(primaryColor); doc.text("Auto Loan vs. Lease Cost Comparison", doc.internal.pageSize.getWidth() / 2, yPos, { align: 'center' }); yPos += 15; // Helper to add sections and manage Y position function addSection(title, data, isLease = false) { if (yPos > 240) { doc.addPage(); yPos = 20; } doc.setFontSize(16); doc.setTextColor(primaryColor); doc.text(title, 14, yPos); yPos += 8; doc.setFontSize(10); doc.setTextColor(textColor); data.forEach(item => { if (yPos > 270) { doc.addPage(); yPos = 20; } doc.text(`${item.label}:`, 14, yPos); doc.text(`${item.value}`, 100, yPos); yPos += 6; }); yPos += 4; // Extra space after section } // Common Inputs for PDF const commonData = [ { label: "Vehicle Price / MSRP", value: `$${loan.vehiclePrice.toFixed(2)}` }, { label: "Sales Tax Rate", value: `${(loan.salesTaxRate * 100).toFixed(2)}%` }, { label: "Est. Annual Insurance", value: `$${loan.annualInsurance.toFixed(2)}` }, { label: "Est. Annual Maintenance", value: `$${loan.annualMaintenance.toFixed(2)}` } ]; addSection("Common Inputs", commonData); // Loan Details const loanData = [ { label: "Down Payment", value: `$${loan.loanDownPayment.toFixed(2)}` }, { label: "Loan Term", value: `${loan.loanTermYears} years` }, { label: "APR", value: `${loan.loanApr.toFixed(2)}%` }, { label: "Vehicle Sales Tax Amount", value: `$${loan.vehicleSalesTaxAmount.toFixed(2)}`}, { label: "Amount Financed", value: `$${loan.loanPrincipal.toFixed(2)}` }, { label: "Monthly Loan Payment", value: `$${loan.loanMonthlyPayment.toFixed(2)}` }, { label: "Total Interest Paid", value: `$${loan.totalInterestPaid.toFixed(2)}` }, { label: "Ownership Duration", value: `${loan.ownershipDurationYears} years` }, { label: "Total Insurance Cost", value: `$${loan.totalInsurance.toFixed(2)} (over ${loan.ownershipDurationYears} yrs)` }, { label: "Total Maintenance Cost", value: `$${loan.totalMaintenance.toFixed(2)} (over ${loan.ownershipDurationYears} yrs)` }, { label: "Estimated Resale Value", value: `$${loan.resaleValue.toFixed(2)}` }, { label: "Total Upfront Cost (Loan)", value: `$${loan.totalUpfrontCost.toFixed(2)}`}, { label: "TOTAL COST OF BUYING", value: `$${loan.totalCost.toFixed(2)} (over ${loan.ownershipDurationYears} yrs)` }, { label: "Average Monthly Cost (Loan)", value: `$${loan.averageMonthlyCost.toFixed(2)}` } ]; addSection("Loan (Buying) Details", loanData); // Lease Details const leaseData = [ { label: "Lease Term", value: `${lease.leaseTermYears} years` }, { label: "Monthly Payment (raw)", value: `$${lease.leaseMonthlyPaymentRaw.toFixed(2)}` }, { label: "Effective Monthly Payment (incl. tax)", value: `$${lease.leaseMonthlyPaymentWithTax.toFixed(2)}` }, { label: "Money Due at Signing (raw)", value: `$${lease.leaseDueAtSigning.toFixed(2)}` }, { label: "Effective Due at Signing (incl. tax)", value: `$${lease.dueAtSigningWithTax.toFixed(2)}`}, { label: "Annual Mileage Allowance", value: `${lease.leaseMileageAllowance.toLocaleString()} miles` }, { label: "Mileage Overage Cost", value: `$${lease.mileageOverageCost.toFixed(2)}` }, { label: "Disposition Fee", value: `$${lease.leaseDispositionFee.toFixed(2)}` }, { label: "Total Insurance Cost", value: `$${lease.totalInsurance.toFixed(2)} (over ${lease.leaseTermYears} yrs)` }, { label: "Total Maintenance Cost", value: `$${lease.totalMaintenance.toFixed(2)} (over ${lease.leaseTermYears} yrs)` }, { label: "Total Upfront Cost (Lease)", value: `$${lease.totalUpfrontCost.toFixed(2)}`}, { label: "TOTAL COST OF LEASING", value: `$${lease.totalCost.toFixed(2)} (over ${lease.leaseTermYears} yrs)` }, { label: "Average Monthly Cost (Lease)", value: `$${lease.averageMonthlyCost.toFixed(2)}` } ]; addSection("Lease Details", leaseData, true); // Summary Comparison if (yPos > 250) { doc.addPage(); yPos = 20; } doc.setFontSize(16); doc.setTextColor(primaryColor); doc.text("Comparison Summary", 14, yPos); yPos += 10; doc.setFontSize(11); doc.setTextColor(textColor); doc.text(`Average Monthly Cost (Loan): $${loan.averageMonthlyCost.toFixed(2)} over ${loan.ownershipDurationYears} years`, 14, yPos); yPos +=7; doc.text(`Average Monthly Cost (Lease): $${lease.averageMonthlyCost.toFixed(2)} over ${lease.leaseTermYears} years`, 14, yPos); yPos +=7; doc.setFont(undefined, 'bold'); if (Math.abs(loan.averageMonthlyCost - lease.averageMonthlyCost) < 0.01) { doc.text("Conclusion: Both options have nearly identical average monthly costs over their terms.", 14, yPos); } else if (loan.averageMonthlyCost < lease.averageMonthlyCost) { doc.setTextColor(accentColor); doc.text("Conclusion: Buying with a loan appears to have a lower average monthly cost.", 14, yPos); } else { doc.setTextColor(accentColor); doc.text("Conclusion: Leasing appears to have a lower average monthly cost.", 14, yPos); } yPos +=7; doc.setFont(undefined, 'normal'); doc.setTextColor(textColor); doc.setFontSize(9); doc.text("Note: This comparison is based on average monthly costs over potentially different durations.", 14, yPos); yPos+=4; doc.text("Consider the total costs, ownership benefits/drawbacks, and individual circumstances.", 14, yPos); doc.save('auto_loan_vs_lease_comparison.pdf'); } // Initialize document.addEventListener('DOMContentLoaded', () => { alvlc_showTab(0); // Set default values in HTML or here if needed // Call calculateAndDisplayResults on first load of results tab if desired, // but it's better to wait for user interaction or explicit navigation. });
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