special purpose asset "special purpose asset" means a leased asset where no other user can use the same asset without making alterations or dismantling from a structure or land; and such special purpose asset shall be deemed to be a movable poperty for the purposes of section 36 (1) of the Income Tax Act 1967. PU(A) 131/1986 - INCOME TAX LEASING REGULATIONS, 1986 4. Interpretation.