🚗 Auto Lease Calculator

What is the Auto Lease Calculator?

This tool is a financial simulation designed to calculate the estimated **monthly payment** and the **total cash required at signing** for a new car lease. Unlike standard auto loan calculations which are based on principal and interest, auto leasing is based on the vehicle's expected depreciation over the lease term and an interest charge calculated using the Money Factor.

Why You Need This Tool and Its Purpose

Leasing involves specialized jargon and calculation methods that make it difficult for consumers to verify dealer quotes. This calculator empowers you to:

1. **Verify Monthly Payments:** By inputting the three key figures—**Capitalized Cost**, **Residual Value**, and **Money Factor**—you can independently confirm the base monthly payment quoted by a dealer.
2. **Budget for Upfront Costs:** Leasing requires various fees (acquisition, documentation, first payment) upfront. The purpose of this tool is to combine these costs with any down payment (Cap Cost Reduction) to give you the **exact cash needed** when you sign the contract.
3. **Understand the Cost of Depreciation:** The monthly payment is largely a charge for depreciation. This tool breaks down how much you are paying for the vehicle's loss in value versus how much you are paying in interest (finance charge).

How This Calculator Works

The calculation follows the industry standard, two-part formula:

1. **Depreciation Charge:** This covers the value the car loses. It is calculated as: Monthly Depreciation = (Capitalized Cost - Residual Value $) / Lease Term (Months).
2. **Finance Charge:** This is the interest paid on the average balance of the lease. It is calculated using the Money Factor: Monthly Finance Charge = (Capitalized Cost + Residual Value $) × Money Factor.
3. **Total Payment:** The monthly payment (before tax) is the sum of the Depreciation Charge and the Finance Charge. Sales tax is typically applied to this total payment.