§ 1.169-3. Amortizable basis.

¶(1) If the construction, reconstruction, or erection was begun before January 1, 1969, there shall be included in the amortizable basis only so much of the adjusted basis of such facility for purposes of determining gain (referred to in paragraph (a) of this section) as is properly attributable under the rules set forth in paragraph (b)(2)(iii) of § 1.169-2 to construction, reconstruction, or erection after December 31, 1968. See section 169 (d)(4). For example, assume a certified pollution control facility for which the shortest period authorized under section 167 is 10 years has a cost of $500,000, of which $450,000 is attributable to construction after December 31, 1968. Further, assume such facility does not perform a function in addition to pollution control and is used only in connection with a plant in operation before January 1, 1969. The facility would have an amortizable basis of $450,000 (computed without regard to paragraphs (c) and (d) of this section). For depreciation of the remaining portion ($50,000) of the cost, see section 169(g) and paragraph (a)(3)(ii) of § 1.169-1. For the definition of the term “certified pollution control facility” see paragraph (a) of § 1.169-2.

¶(2) If the taxpayer elects to begin the 60-month amortization period with the first month of the taxable year succeeding the taxable year in which the facility is completed or acquired and a depreciation deduction is allowable under section 167 (including an additional first-year depreciation allowance under former section 179; for a facility that is acquired by the taxpayer after September 10, 2001, and that is qualified property under section 168(k)(2) or § 1.168(k)-1 or qualified New York Liberty Zone property under section 1400L(b) or § 1.1400L(b)-1, the additional first year depreciation deduction under section 168(k)(1) or 1400L(b), as applicable; and for a facility that is acquired by the taxpayer after May 5, 2003, and that is 50-percent bonus depreciation property under section 168(k)(4) or § 1.168(k)-1, the additional first year depreciation deduction under section 168(k)(4)) with respect to the facility for the taxable year in which it is completed or acquired, the amount determined under paragraph (b)(1) of this section shall be reduced by an amount equal to the amount of the depreciation deduction allowed or allowable, whichever is greater, multiplied by a fraction the numerator of which is the amount determined under paragraph (b)(1) of this section, and the denominator of which is the facility's total cost. The additional first-year allowance for depreciation under former section 179 will be allowable only for the taxable year in which the facility is completed or acquired and only if the taxpayer elects to begin the amortization deduction under section 169 with the taxable year succeeding the taxable year in which such facility is completed or acquired. For a facility that is acquired by a taxpayer after September 10, 2001, and that is qualified property under section 168(k)(2) or § 1.168(k)-1 or qualified New York Liberty Zone property under section 1400L(b) or § 1.1400L(b)-1, see § 1.168(k)-1(f)(4) or § 1.1400L(b)-1(f)(4), as applicable, with respect to when the additional first year depreciation deduction under section 168(k)(1) or 1400L(b) is allowable. For a facility that is acquired by a taxpayer after May 5, 2003, and that is 50-percent bonus depreciation property under section 168(k)(4) or § 1.168(k)-1, see § 1.168(k)-1(f)(4) with respect to when the additional first year depreciation deduction under section 168(k)(4) is allowable.

¶(1) If after the completion or acquisition of a certified pollution control facility further expenditures are made for additional construction, reconstruction, or improvements, the cost of such additions or improvements made prior to the beginning of the amortization period shall increase the amortizable basis of such facility, but the cost of additions or improvements made after the amortization period has begun, shall not increase the amortizable basis. See section 169(f)(2)(B).

¶(2) If expenditures for such additional construction, reconstruction, or improvements result in a facility which is new and is separately certified as a certified pollution control facility as defined in section 169(d)(1) and paragraph (a) of § 1.169-2, and, if proper election is made, such expenditures shall be taken into account in computing under paragraph (a) of this section the amortizable basis of such new and separately certified pollution control facility.