(a) Adjustments to basis must be made for exhaustion, wear and tear, obsolescence, amortization, and depletion to the extent actually sustained in respect of:
(1) Any period before March 1, 1913,
(2) Any period since February 28, 1913, during which the property was held by a person or organization not subject to income taxation under chapter 1 of the Code or prior income tax laws,
(3) Any period since February 28, 1913, and before January 1, 1958, during which the property was held by a person subject to tax under part I, subchapter L, chapter 1 of the Code, or prior income tax law, to the extent that section 1016(a)(2) does not apply, and
(4) Any period since February 28, 1913, during which such property was held by a person subject to tax under part II of subchapter L, chapter 1 of the Code, or prior income tax law, to the extent that section 1016(a)(2) does not apply.
(b) The amount of the adjustments described in paragraph (a) of this section actually sustained is that amount charged off on the books of the taxpayer where such amount is considered by the Commissioner to be reasonable. Otherwise, the amount actually sustained will be the amount that would have been allowable as a deduction:
(1) During the period described in paragraph (a) (1) or (2) of this section, had the taxpayer been subject to income tax during those periods, or
(2) During the period described in paragraph (a) (3) or (4) of this section, with respect to property held by a taxpayer described in that paragraph, to the extent that section 1016(a)(2) was inapplicable to such property during that period.
The preliminary Code is a preliminary release of the Internal Revenue Code of 1986 (the "Code") by the Office of the Law Revision Counsel and is subject to further revision before it is released again as a final version. The source of the preliminary Code used in TouchTax is available here: https://uscode.house.gov/download/download.shtml. The Code is a consolidation and codification by subject matter of the general and permanent laws of the U.S. prepared by the Office of the Law Revision Counsel of the U.S. House of Representatives. The Treasury Regulations are a codification of the general and permanent rules published in the Federal Register by the departments and agencies of the federal government. The version of the Treasury Regulations available within TouchTax is part of the Electronic Code of Federal Regulations which is not an official legal edition of the Code of Federal Regulations but is an editorial compilation of CFR material and Federal Register amendments produced by the National Archives and Records Administration's Office of the Federal Register (OFR) and the Government Publishing Office. The source of the CFR used in TouchTax is available here: https://www.govinfo.gov/bulkdata/ECFR/title-26. Those using TouchTax for legal research should verify their results against the printed versions of the Code and Treasury Regulations. TouchTax is copyright 2024 by Com-Lab (Mobile). Learn more at http://touchtax.edrich.de.