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About

Automotive leases often obscure the true cost of financing under terms like "Money Factor" or "Rent Charge." Financial transparency requires breaking down the monthly remittance into its constituent parts: depreciation (principal), finance charges (interest), and taxes. This utility constructs a full amortization table for the lease term. It handles Capitalized Cost Reduction - down payments or trade-ins - by adjusting the Net Capitalized Cost before the rent charge calculation begins. This distinction is critical for accounting accuracy under standards that require separating the return of capital from the cost of capital.

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Formulas

The monthly lease payment calculation relies on two distinct charges: depreciation and rent. The formulas use the Net Capitalized Cost (Cnet) and Residual Value (Vres).

Monthly Depreciation:

CnetVresN

Monthly Rent Charge:

(Cnet + Vres) × MF

Unlike a standard loan where interest is calculated on the declining balance, a standard car lease calculates the rent charge on the sum of the adjusted capitalized cost and the residual value, effectively charging interest on the depreciation and the holdback value simultaneously.

Reference Data

Term ComponentVariableStandard DefinitionMathematical Role
Net Capitalized CostCnetAgreed value minus reductionPrincipal basis
Residual ValueVresValue at lease endBalloon payment
Money FactorMFAPR ÷ 2400Interest rate
DepreciationDMonthly principal lossLinear reduction
Rent ChargeRMonthly finance feeInterest cost

Frequently Asked Questions

Leasing companies capitalize the entire asset value. You pay interest on the portion you use (Depreciation) and the portion the lessor holds (Residual). The formula (Net Cap + Residual) × Money Factor is a simplified approximation used in the industry to average this interest cost over the term.
A down payment or trade-in reduces the Net Capitalized Cost immediately. This lowers both the monthly depreciation payment and the monthly rent charge, as the total financed amount decreases.
This tool separates sales tax from the base payment. For business leases, the deductibility depends on usage percentage and inclusion amounts, but separating the tax portion is the first step in accurate bookkeeping.