Net cap cost is short for net capitalized cost. This is a term that is commonly used in car leasing. The net cap cost refers to the price of a vehicle, subtracting any manufacturer’s discounts and customer down payments from the manufacturer’s suggested retail price. What this really means is that the net cap amount is the amount that is actually being financed with the lease. This amount usually, though not always, includes the sales tax on the vehicle and may include other fees, as well. This would be called the finance amount, or loan amount, if you were getting a loan rather than a lease.