A leased car is not a purchase. You don't enter it into your tax return as an asset. Since you don't own it, you cannot depreciate it. There is a place in the Vehicle Section under Business Expenses to enter your leased vehicle. It is usually a very good tax deduction because the lease payments are deductible. You can also deduct your gas, tires, repairs and other actual expenses in addition to the lease payments. Any "down payment" is usually prepaid lease payments, unless the deposit is held to be returned to you at the end. You can't use both the mileage deduction and the lease payments.