Capital Gain Tax Calculator

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Car Lease vs. Buy Calculator

Estimated Monthly Loan Payment: $0.00
Total Loan Cost (over loan term): $0.00
Estimated Monthly Lease Payment: $0.00
Total Lease Cost (over lease term): $0.00

Should You Lease or Buy Your Next Car?

Choosing between a car lease and an auto loan is one of the most significant financial decisions for drivers. Both options have distinct advantages depending on your driving habits, budget, and long-term financial goals.

How This Calculator Works

Our Lease vs. Buy Calculator compares the monthly payments and total out-of-pocket costs for both financing methods. It uses the Standard Loan Amortization formula for buying and the Industry Standard Lease Formula (Depreciation + Rent Charge) for leasing.

  • Loan Calculation: We take the vehicle price minus your down payment and apply the interest rate over your chosen term.
  • Lease Calculation: We calculate the depreciation by subtracting the residual value (what the car is worth at the end) from the initial price, then add the "Money Factor" (lease interest).

Example Comparison

Imagine a car priced at $35,000 with a $5,000 down payment:

If you buy it at a 5.5% interest rate for 60 months, your monthly payment would be approximately $573. Over five years, you will own the car outright, which then has trade-in value.

If you lease the same car for 36 months with a 60% residual value ($21,000) and a .0025 money factor, your monthly payment might drop to around $430. While the payment is lower, you must return the car at the end of the term or buy it for the residual price.

Key Factors to Consider

1. Ownership: When you buy, you are building equity. Once the loan is paid, you own an asset. With a lease, you are essentially "renting" the vehicle during its most depreciable years.

2. Mileage Limits: Leases usually limit you to 10,000 or 12,000 miles per year. If you have a long commute, buying is almost always the better financial choice to avoid per-mile penalties.

3. Monthly Cash Flow: Leasing typically offers lower monthly payments, which can free up cash for other investments or expenses. However, you will always have a car payment if you continue to lease indefinitely.

4. Maintenance: Most leased vehicles are under the manufacturer's bumper-to-bumper warranty for the entire duration of the lease, meaning your repair costs are virtually zero.

function calculateLeaseVsBuy() { // Get Inputs var price = parseFloat(document.getElementById("carPrice").value); var down = parseFloat(document.getElementById("downPayment").value); var loanInt = parseFloat(document.getElementById("interestRate").value) / 100 / 12; var loanTerm = parseFloat(document.getElementById("loanTerm").value); var leaseTerm = parseFloat(document.getElementById("leaseTerm").value); var residualPercent = parseFloat(document.getElementById("residualValue").value) / 100; var moneyFactor = parseFloat(document.getElementById("moneyFactor").value); var taxRate = parseFloat(document.getElementById("salesTax").value) / 100; if (isNaN(price) || isNaN(down) || isNaN(loanInt) || isNaN(loanTerm)) { alert("Please enter valid numbers"); return; } // — LOAN CALCULATION — var loanPrincipal = price – down; var loanMonthly = (loanPrincipal * loanInt * Math.pow(1 + loanInt, loanTerm)) / (Math.pow(1 + loanInt, loanTerm) – 1); var totalLoanCost = (loanMonthly * loanTerm) + down; // — LEASE CALCULATION — var residualValueAmount = price * residualPercent; var netCapCost = price – down; // Depreciation portion var monthlyDepreciation = (netCapCost – residualValueAmount) / leaseTerm; // Rent charge portion (Interest) var monthlyRentCharge = (netCapCost + residualValueAmount) * moneyFactor; var leaseMonthlyBase = monthlyDepreciation + monthlyRentCharge; var leaseMonthlyTotal = leaseMonthlyBase * (1 + taxRate); var totalLeaseCost = (leaseMonthlyTotal * leaseTerm) + down; // Display Results document.getElementById("calc-results").style.display = "block"; document.getElementById("monthlyLoan").innerText = "$" + loanMonthly.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2}); document.getElementById("totalLoan").innerText = "$" + totalLoanCost.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2}); document.getElementById("monthlyLease").innerText = "$" + leaseMonthlyTotal.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2}); document.getElementById("totalLease").innerText = "$" + totalLeaseCost.toLocaleString(undefined, {minimumFractionDigits: 2, maximumFractionDigits: 2}); }

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