26 CFR § 1.168A-3 - Election to discontinue amortization.
(a) If a taxpayer has elected to take amortization deductions with respect to an emergency facility, it may, after such election and prior to the expiration of the 60-month amortization period, discontinue the amortization deductions for the remainder of the 60-month period. An election to discontinue the amortization deductions shall be made by a notice in writing filed with the district director for the internal revenue district in which the return of the taxpayer is required to be filed, specifying the month as of the beginning of which the taxpayer elects to discontinue such deductions. Such notice shall be filed before the beginning of the month specified therein, and shall contain a description clearly identifying the emergency facility with respect to which the taxpayer elects to discontinue the amortization deductions. If the taxpayer so elects to discontinue the amortization deductions, it shall not be entitled to any further amortization deductions with respect to such facility.
(b) A taxpayer which thus elects to discontinue amortization deductions with respect to an emergency facility is entitled, if such facility is depreciable property under section 167 and the regulations thereunder, to a deduction for depreciation with respect to such facility. The deduction for depreciation shall begin with the first month as to which the amortization deduction is not applicable, and shall be computed on the adjusted basis of the property as of the beginning of such month (see section 1011 and the regulations thereunder).
(c) This section may be illustrated by the following example: