An eligible pretransition method
(4) Eligible pretransition method. An eligible pretransition method means a method of applying section 987 before the transition date that is described in paragraphs (e)(4)(i) through (iii) of this section. An owner is treated as applying an eligible pretransition method with respect to a section 987 QBU only if it applied an eligible pretransition method with respect to the QBU on a return filed before November 9, 2023. (i) Earnings and capital method. An earnings and capital method is an eligible pretransition method if it is applied in a reasonable manner. For purposes of this paragraph (e)(4)(i), an earnings and capital method means a method of applying section 987 that requires section 987 gain or loss to be determined and recognized with respect to both the earnings of the section 987 QBU and capital contributed to the section 987 QBU (for example, the method prescribed in the 1991 proposed regulations under section 987). See paragraph (l)(1) of this section (Example 1) for an illustration of this rule. (ii) Other reasonable methods. Any reasonable method of applying section 987 is an eligible pretransition method if it produces the same total amount of income over the life of the owner of a section 987 QBU as the method described in paragraph (e)(4)(i) of this section (taking into account the aggregate of section 987 gain or loss, section 987 taxable income or loss, and income or loss recognized by the owner of the section 987 QBU with respect to property transferred between the section 987 QBU and the owner or any QBU of the owner). See paragraph (l)(2) of this section (Example 2) for an illustration of this rule. (iii) Other earnings only methods. An earnings only method that does not meet the requirements of paragraph (e)(4)(ii) of this section is an eligible pretransition method, provided that (A) The earnings only method was first applied by the owner on a return filed before November 9, 2023; (B) The earnings only method was applied consistently to all section 987 QBUs of the owner since the first taxable year in which the owner applied an eligible pretransition method; and (C) The owner of the section 987 QBU otherwise applied section 987 in a reasonable manner. See paragraph (l)(3) of this section (Example 3) for an illustration of this rule. (iv) Error in the application of a section 987 method. If an owner generally applied section 987 with respect to a section 987 QBU before the transition date under a method described in paragraph (e)(4)(i), (ii), or (iii) of this section but made errors in the application of the method or failed to apply the method to every taxable year since the QBU's inception, the owner is considered to have applied an eligible pretransition method with respect to the QBU. However, pretransition gain or loss must be determined under paragraph (e)(2) of this section as though the eligible pretransition method was applied without error since the section 987 QBU's inception. See paragraph (l)(5) of this section (Example 5) for an illustration of this rule. (v) Certain consistent practices not treated as errors(A) In general. If an owner generally applied section 987 with respect to a section 987 QBU before the transition date under a method described in paragraph (e)(4)(i), (ii), or (iii) of this section and used a consistent practice described in paragraph (e)(4)(v)(B) of this section for purposes of applying that method, the owner is considered to have applied an eligible pretransition method with respect to the QBU. In addition, the consistent practice is not treated as an error under paragraph (e)(4)(iv) of this section. Therefore, the owner must take the consistent practice into account in determining pretransition gain or loss under paragraph (e)(2) of this section. See paragraph (l)(6) of this section (Example 6) for an illustration of this rule. (B) Practices not treated as errors(1) Reasonable conventions. The use of a reasonable convention (for example, the use of a yearly average exchange rate rather than the applicable spot rate to translate frequently recurring transfers) is a practice described in this paragraph (e)(4)(v)(B).