Auto Lease vs Buy Calculator

Enter your vehicle price, loan and lease terms, money factor, and tax rate to see whether buying or leasing saves you more money over the full term.

Created by Luis GonzalezLast updated: May 9, 2026

How to Use This Calculator

1
Enter the Vehicle Price
Input the total purchase price of the vehicle you are considering, whether buying or leasing.
2
Add your Down Payment
Specify the upfront amount you will pay, which reduces the amount financed or the capitalized cost.
3
Set the Loan Term (for buying)
Choose the number of months for a potential auto loan, typically 36 to 72 months.
4
Input the Interest Rate (for buying)
Enter the annual interest rate you expect for an auto loan.
5
Provide the Residual Value (for leasing)
Enter the estimated value of the vehicle at the end of the lease term, as set by the lender.
6
Set the Lease Term (for leasing)
Specify the number of months for the lease agreement, commonly 24, 36, or 48 months.
7
Input the Lease Money Factor
Enter the money factor provided by the leasing company. Multiply by 2,400 to get an equivalent APR.
8
Specify the Sales Tax Rate
Input the applicable sales tax rate for your state or locality, applied differently for buying vs. leasing.
9
Add Additional Costs
Include any extra fees, such as acquisition fees for a lease or dealer fees for a purchase, to ensure a comprehensive comparison.
10
Review your results
Compare the monthly payments and total costs for both buying and leasing to identify the financially better option for your situation.

Example Calculation

A driver is comparing buying a $30,000 vehicle with a $2,000 down payment, a 36-month loan at 5% interest, versus leasing it for 36 months with a $18,000 residual value, 0.002 money factor, and 7% sales tax. Both options have no additional costs for simplicity.

Vehicle Price ($)

30,000

Down Payment ($)

2,000

Loan Term (months)

Interest Rate (%)

Residual Value ($)

18,000

Lease Term (months)

Lease Money Factor

0.002

Sales Tax Rate (%)

Additional Costs ($)

Results

Leasing

Tips

Consider Your Driving Habits

If you drive more than 12,000-15,000 miles annually, leasing might incur significant over-mileage penalties. Buying is often more cost-effective for high-mileage drivers.

Factor in Resale Value for Buying

When buying, research the vehicle's projected resale value after your intended ownership period. This hidden 'cost' of depreciation can make an expensive purchase less appealing in the long run.

Evaluate Lease-End Options

Leasing often includes options to purchase the vehicle at the residual value or trade it in. If you might want to buy the car at the end of the lease, ensure the residual value is fair and competitive.

Auto Lease vs. Buy: Unpacking Your Vehicle Financing Options

The Auto Lease vs Buy Calculator provides a critical comparison, helping you decide whether to lease or purchase your next vehicle in 2025. This decision impacts not only your monthly budget but also your long-term financial health and vehicle ownership experience. By comparing monthly payments, total costs, and factors like interest and depreciation, you can make an informed choice. For a $30,000 vehicle, the total cost difference between a 3-year lease and a 3-year loan can be several thousand dollars, making a detailed comparison indispensable.

Understanding the Lease vs. Buy Dilemma

The choice between leasing and buying a car is a fundamental financial decision that goes beyond just the monthly payment. It involves weighing ownership, equity, flexibility, and long-term costs against immediate affordability and convenience. Leasing offers lower monthly outlays and the ability to drive a new car more frequently, but you don't build equity and face mileage restrictions. Buying, conversely, leads to eventual ownership, no mileage limits, and potential resale value, but typically involves higher monthly payments and the responsibility of maintenance beyond warranty. Your lifestyle, financial goals, and driving habits are key to determining which path offers the most value.

Dissecting the Financial Formulas for Auto Choices

The Auto Lease vs Buy Calculator employs distinct financial formulas for each option to provide a comprehensive comparison.

For Buying (Auto Loan): The monthly loan payment (P) is calculated using the standard amortization formula:

monthly payment = [loan amount × (annual rate / 12)] / [1 - (1 + annual rate / 12)^(-loan term)]

Where loan amount is vehicle price - down payment. The total cost of buying includes the sum of all monthly payments, the down payment, and sales tax on the full vehicle price.

For Leasing:

Monthly Depreciation Cost: monthly depreciation cost = (vehicle price - residual value) / lease term
Monthly Finance Charge: monthly finance charge = (vehicle price + residual value) × lease money factor
Monthly Lease Payment: monthly lease payment = (monthly depreciation cost + monthly finance charge) × (1 + sales tax rate) The total cost of leasing includes the sum of all monthly lease payments, the down payment, and any additional lease-specific fees.

💡 If you're leaning towards buying and already have an auto loan, our Auto Loan Refinance Calculator can show you potential savings by securing a lower interest rate on your existing debt.

Comparing a $30,000 Vehicle Lease vs. Buy

Let's compare buying a $30,000 vehicle with a $2,000 down payment, a 36-month loan at 5% interest, against leasing it for 36 months with a $18,000 residual value, 0.002 money factor, and 7% sales tax. Assume no additional fees for simplicity.

Buying Scenario:

Loan Amount: $30,000 (vehicle price) - $2,000 (down payment) = $28,000
Monthly Loan Payment (5% APR, 36 months): Using the amortization formula, this is approximately $839.88.
Total Cost of Buying: ($839.88 × 36) + $2,000 (down payment) + ($30,000 × 0.07 sales tax) = $30,235.68 + $2,000 + $2,100 = $34,335.68

Leasing Scenario:

Monthly Depreciation: ($30,000 - $18,000) / 36 = $333.33
Monthly Finance Charge: ($30,000 + $18,000) × 0.002 = $96.00
Monthly Lease Payment (before tax): $333.33 + $96.00 = $429.33
Monthly Lease Payment (with 7% tax): $429.33 × 1.07 = $459.39
Total Cost of Leasing: ($459.39 × 36) + $2,000 (down payment) = $16,538.04 + $2,000 = $18,538.04

In this specific scenario, Leasing saves $15,797.64 over 36 months compared to buying.

💡 If you're considering a trade-in to reduce your upfront costs for either buying or leasing, use our Auto Trade-In Value Calculator to get an estimate of your current vehicle's worth.

Key Factors Influencing Auto Lease Payments

Auto lease payments are significantly influenced by several core factors: the money factor, residual value, and vehicle depreciation. The money factor, essentially the interest rate for a lease, typically ranges from 0.00050 to 0.00350 (equivalent to an APR of 1.2% to 8.4%). A lower money factor directly reduces the finance charge portion of your monthly payment. Residual value, the estimated worth of the vehicle at lease end, is crucial because the difference between the vehicle's initial price and its residual value is the total depreciation you pay for. For a 36-month lease on a 2025 model, a residual value of 50-60% of the MSRP is generally considered strong, while below 45% might indicate higher monthly depreciation costs. Vehicle depreciation itself, often the largest component of a lease payment, is not uniform; some vehicles hold their value better than others, leading to lower lease costs.

Industry Benchmarks for Auto Financing Decisions

When deciding between leasing and buying, industry benchmarks provide valuable context. For auto loans, a competitive interest rate for well-qualified buyers in 2025 typically falls between 4% and 7% APR, with loan terms often extending to 60 or 72 months. Lenders usually prefer a debt-to-income (DTI) ratio below 40%. For leasing, a favorable money factor translates to an effective APR below 5%, and a strong residual value for a 36-month term is typically 55% or higher of the vehicle's MSRP. The average annual mileage limit on leases is often 10,000 to 12,000 miles, with overage penalties ranging from $0.15 to $0.25 per mile. Comparing your specific offers against these industry standards helps determine the true value of your deal.

Frequently Asked Questions

When is leasing a car better than buying?

Leasing a car is often better than buying if you prefer to drive a new vehicle every few years, desire lower monthly payments, and typically drive fewer miles annually. It can also be advantageous if you use the car for business, as certain lease expenses may be tax-deductible. Leasing avoids the hassle of selling a used car and often comes with full warranty coverage for the entire term.

When is buying a car better than leasing?

Buying a car is generally better if you plan to keep the vehicle for more than three to five years, drive high mileage, or prefer to build equity towards full ownership. When you buy, you have no mileage restrictions, can customize the car freely, and eventually eliminate monthly payments, leading to lower long-term costs if you maintain the vehicle well beyond the loan term.

Does sales tax work differently for leasing vs. buying?

Yes, sales tax typically works differently for leasing versus buying. When buying, sales tax is usually paid on the full purchase price of the vehicle, often upfront or financed into the loan. When leasing, sales tax is generally applied to each monthly lease payment, or in some states, only on the depreciation portion of the lease, spreading the tax burden over the lease term.

What is a 'money factor' in auto leasing?

A money factor is the rate used to calculate the finance charge on a lease, similar to an interest rate. It's often expressed as a small decimal (e.g., 0.002). To convert it to an approximate annual percentage rate (APR) for easier comparison, you multiply the money factor by 2,400. This helps you understand the true cost of borrowing in a lease agreement.