For profitmaking abatement works limitation, see paragraph (d) of this section.
Thus, if property meets the conditions of (b) of this subdivision in a taxable year, it shall be considered placed in service in such year notwithstanding that the period for depreciation with respect to such property begins or would have begun in a succeeding taxable year because, for example, under the taxpayer's depreciation practice such property is or would have been accounted for in a multiple asset account and depreciation is or would have been computed under an "averaging convention" (§ 1.167(a)-10 ), or depreciation with respect to such property would have been computed under the completed contract method, the unit of production method, or the retirement method. In the case of property acquired by a taxpayer for use in his trade or business (or in the production of income), property shall be considered in a condition or state of readiness and availability for the abatement or control of water or atmospheric pollution if, for example, equipment is acquired for the abatement or control of water or atmospheric pollution and is operational but is undergoing testing to eliminate any defects. However, materials and parts acquired to be used in the construction of an item of equipment shall not be considered in a condition or state of readiness and availability for the abatement or control of water or atmospheric pollution.
For effect on computation of amortizable basis, see paragraph (c) of § 1.169-3 .
26 C.F.R. §1.169-2