1.168(b)-1—Definitions.
(a) Definitions.
For purposes of section 168 and the regulations under section 168, the following definitions apply:
(1)
Depreciable property is property that is of a character subject to the allowance for depreciation as determined under section 167 and the regulations under section 167.
(2)
MACRS property is tangible, depreciable property that is placed in service after December 31, 1986 (or after July 31, 1986, if the taxpayer made an election under section 203(a)(1)(B) of the Tax Reform Act of 1986; 100 Stat. 2143) and subject to section 168, except for property excluded from the application of section 168 as a result of section 168(f) or as a result of a transitional rule.
(3)
Unadjusted depreciable basis is the basis of property for purposes of section 1011 without regard to any adjustments described in section 1016(a)(2) and (3). This basis reflects the reduction in basis for the percentage of the taxpayer's use of property for the taxable year other than in the taxpayer's trade or business (or for the production of income), for any portion of the basis the taxpayer properly elects to treat as an expense under section 179, section 179C, or any similar provision, and for any adjustments to basis provided by other provisions of the Internal Revenue Code and the regulations under the Code (other than section 1016(a)(2) and (3)) (for example, a reduction in basis by the amount of the disabled access credit pursuant to section 44(d)(7) ). For property subject to a lease, see section 167(c)(2).
(4)
Adjusted depreciable basis is the unadjusted depreciable basis of the property, as defined in § 1.168(b)-1(a)(3), less the adjustments described in section 1016(a)(2) and (3).