About this Auto Lease Calculator
Leasing allows you to drive a new car for a lower monthly payment than buying, but the math can be confusing. This calculator breaks down the lease fee into Depreciation and Finance Charge (Rent Charge).
How to use this calculator
- Enter the MSRP (Sticker Price).
- Enter the Negotiated Price (Cap Cost).
- Input the Residual Value % (from dealer or lease guide).
- Enter the Money Factor (interest rate).
- The result is your monthly payment with tax included.
Accuracy and testing
Review formula sources, default test cases, assumptions, unit handling, rounding rules, and changelog for this calculator.
How this calculator works
Inputs explained
MSRP
Manufacturer's Suggested Retail Price. The residual value is calculated from this number.
Negotiated Price
Also called 'Capitalized Cost'. Negotiate this just like buying a car. Lower is better.
Residual Value
The car's estimated worth at the end of the lease, expressed as a percentage of MSRP. Higher is better for lower payments.
Money Factor
The financing rate. To convert to APR, multiply by 2400. (e.g., 0.0025 * 2400 = 6% APR).
Understanding your results
Example scenarios
Good Lease Deal
MSRP $35k, Negotiated $32k, Residual 60%, MF 0.0015 (3.6% APR). Monthly: ~$360. You are paying mostly for the depreciation of the $11k difference.
Bad Lease Deal
MSRP $35k, Negotiated $35k (Full Price), Residual 50%, MF 0.003 (7.2% APR). Monthly: ~$580. You are paying for a huge depreciation chunk plus high interest.
Key Features
- Money Factor to APR conversion
- Sales Tax integration
- Residual Value calculation
Things to Keep in Mind
Does not include dealer documentation fees or registration fees, which are usually paid upfront.
Tips & Best Practices
- Always negotiate the 'Cap Cost' (Vehicle Price). Dealers often pretend lease prices are fixed, but they aren't.
- Don't put money down on a lease ('Cap Cost Reduction'). If the car is totaled, that money is lost. Pay higher monthly instead.
- Check the mileage limits. Over-mileage fees can be expensive ($0.15-$0.25 per mile).
Glossary of Terms
- Capitalized Cost
- The negotiated selling price of the vehicle.
- Residual Value
- The value of the car at the end of the lease term.
- Money Factor
- The interest rate presented as a decimal factor.