The paper deals with the calculations of leasing economics, derived from recently valid laws, mainly the income tax law. According to § 19 paragraph 3 letter a) of the income tax law /ZDP/, the tax expenses represent a depreciation charge of tangible and intangible properties. The new law about the income tax allowed in precisely determined cases to claim depreciation charge not only to tax-payer, having the proprietorship or the administration right (if it relates to the state, village or the higher regional unit), but also to tax-payers who do not have this right if they count this property, incl. they count their property being rented by the form of financial leasing (§24 paragraph 1 letter. e). ZDP). The lessee by this way has the right the leasing object amortizes; despite he is not its owner. This represents a very advantageous, so-called leasing form of depreciation, when the lessees depreciates the property much earlier than using the balanced or accelerated depreciation