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.
DEFINITION of 'Accelerated Cost Recovery System - ACRS'. A system of depreciation introduced by the Economic Recovery Tax Act of 1981. ACRS depreciation is based on recovery periods instead of useful life. These periods were predetermined by the IRS.