documentation. 1  the use of documentary evidence. 2  a furnishing with documents, as to substantiate a claim or the data in a book or article. 3  Computers.
1 Regular depreciation: Most business equipment is depreciable under MACRS depreciation (Modified Accelerated Cost Recovery System-pronounced MAKERS). 2  MACRS includes an accelerated method, which produces higher deductions in the early years of the property's recovery period than the MACRS straight-line method.
The Accelerated Cost Recovery System (ACRS) applies to property first used before 1987. It is the name given to tax rules for getting back (recovering) through depreciation deductions the cost of property used in a trade or business or to produce income. These rules are mandatory and generally apply to tangible property placed in service after 1980 and before 1987.