The rules are based on the concept that, from an economic-business point of view, the lessee is the owner of the leased asset. The rights of use that the lessee is entitled to have entered on a lease, in accordance with Royal Decree n°55 or a similar contract, are to be carried in the “fixed assets” of the lessee's balance sheet for the amounts of capital comprised in the rentals (paid during term of contract).

The lessee depreciates the lease asset in conformity with existing rules for similar assets he owns, meaning that the depreciation term can be different from the lease term.
A Royal Decree of December 3, 1993 again modified the accounting definition of leasing.
As far as movable property leasing is concerned, it states that the option is no longer obligatory and that the invested capital must be reconstituted 100% taking into account the possible option on condition that the latter is not higher than 15% of the investment.
In real estate leasing the option is no longer required, nor the conditions of rightful transfer of ownership of the building at the end of the contract. The capital invested in the building by the lessor must also be reconstituted 100%.