About the Lease Calculator
Lease Calculator helps estimate the key numbers involved in other decisions. It is designed for quick scenario comparison: enter a realistic set of values, calculate the result, then change one assumption at a time to see what has the greatest effect. Unlike a static table, the result responds to your inputs and keeps the calculation in your browser. Amounts are displayed in U.S. dollars for consistency, but the mathematical formulas can be used with another currency when every monetary input uses that same currency.
How to use this calculator
Enter values that match your situation and select Calculate result. Review the main result and its supporting figures, then change one input at a time to compare scenarios. Results are rounded for readability while the calculation retains additional precision internally.
Information you will need
- Asset value
- Residual value
- Rate
- Months
How the calculation works
Separates lease payment into depreciation and finance charge. Read the primary result together with the supporting values rather than focusing on one number alone. A useful estimate should make its assumptions visible. If the answer looks surprising, verify the unit, rate, time period, and whether the entered value is gross or net. Run a conservative and an optimistic scenario to understand the range of possible outcomes.
Formula or method
Monthly = depreciation + finance. Depreciation = (value - residual) / months.
Worked example
$35,000 asset, $18,000 residual, 36 months.
The example is illustrative rather than a recommendation. Use your own verified values and keep all monetary or measurement units consistent. When comparing alternatives, save or note each result so the assumptions do not become mixed.
How to interpret the result
The primary output answers the main question posed by the lease calculator, while the additional cards provide context. A result with many decimal places is not necessarily more certain. The displayed precision makes comparison easier, but uncertainty in the inputs can be larger than the rounding difference.
Compare the result with a second scenario using a less favorable rate, return, cost, or time period. This sensitivity check often provides more useful planning information than one best-case projection.
Limitations and important notes
The lease calculator is a planning tool, not a quote, filing calculation, lending decision, or promise of future performance. It does not automatically retrieve live market rates or apply every fee, tax bracket, program rule, product limit, or state law. Rules for products such as FHA, VA, Social Security, retirement accounts, and taxes can change. Confirm time-sensitive values with the lender, plan administrator, IRS, SSA, or another relevant authority before acting.
Frequently asked questions
How do I calculate lease payments?
A lease payment has three parts: depreciation, finance charge, and tax. Monthly depreciation = (capitalized cost - residual value) / lease term. The finance charge (rent) = (capitalized cost + residual value) x money factor. Add the two, then apply tax on the monthly amount. For a $35,000 vehicle with a $21,000 residual over 36 months and a 0.0025 money factor, depreciation is about $389/month and the finance charge about $140/month, before tax. This calculator builds the same formula for vehicles, equipment, and other leased assets.
What is the difference between leasing and buying?
Leasing gives lower monthly payments because you only pay for the asset's depreciation during the lease term, plus a finance charge, and you never own it. Buying (or financing) costs more per month but builds equity, and you own the asset outright once paid off. Leasing suits assets that depreciate fast or become obsolete quickly, and businesses that want to preserve cash; buying suits long-term use. Note that leasing is generally more expensive over the full life of an asset, and there are always end-of-term decisions to make: buy, return, or renew.
What is the money factor and how do I convert it to an interest rate?
The money factor is how lessors quote the interest rate on a lease, a small decimal like 0.0025. To convert to an annual rate, multiply by 2,400: 0.0025 x 2,400 = 6%. So a money factor of 0.0025 is equivalent to a 6% APR, and 0.0015 equals 3.6%. Good-credit lease deals often carry money factors around 0.0015-0.0020, while poor credit can push it to 0.0030 or higher. Ask the dealer for the money factor directly, since some pad it as hidden profit, and compare it to current auto loan rates before signing.
What is residual value and how does it affect my lease payment?
Residual value is the projected worth of the asset at the end of the lease, usually quoted as a percentage of the original price (commonly 50-65% for cars on 36-month leases). It is the single biggest factor in your payment, because you only pay for the depreciation between the capitalized cost and the residual. A higher residual means less depreciation, so lower payments. The residual is set by the lessor based on the manufacturer program and is hard to negotiate, but you can negotiate the capitalized cost down, which lowers your payment. Vehicles that hold value well are cheaper to lease.
Is it better to lease or buy equipment for my small business?
It depends on cash flow, usage, and tax strategy. Leasing preserves working capital, since upfront costs are often just 1-2 months' payment, and payments are typically tax-deductible operating expenses. This helps if you need current technology and want flexibility to upgrade. Buying builds equity and can unlock bigger tax benefits like Section 179 (deduct the full cost of qualifying equipment in the year you put it in service) and depreciation, but it requires a large down payment and you carry the maintenance and obsolescence risk. For long-lived equipment you will keep for years, buying is usually cheaper; for fast-changing tech, leasing wins.
What is the difference between a $1 buyout lease and a fair market value (FMV) lease?
A $1 buyout lease lets you own the equipment at the end for a token $1. It is effectively a loan in disguise, with higher monthly payments but certainty of ownership. An FMV (true or operating) lease has lower monthly payments, but at the end you must either return the equipment, renew, or buy it at whatever its then-current fair market value is, which can be a large, uncertain balloon. Choose a $1 buyout if you want to keep the asset long-term; choose FMV if you expect to upgrade regularly. Watch return-condition requirements and notice deadlines.
What fees should I expect when leasing?
Beyond the monthly payment, expect an acquisition fee (usually $300-995 for vehicles, often rolled into the capitalized cost) and possibly a disposition fee (roughly $300-500) if you return the vehicle or equipment at lease end. There may also be a security deposit, registration and doc fees, and end-of-term excess-wear or excess-mileage charges of $0.15-0.30 per mile over the allowance. Taxes are charged on monthly payments in most states, though a few tax the full value upfront. Get every fee in writing and compare the total lease cost, not just the advertised monthly payment.