26 U.S.C. § 989: Other definitions and special rules

For purposes of this subpart, the term “qualified business unit” means any separate and clearly identified unit of a trade or business of a taxpayer which maintains separate books and records. in the case of an actual distribution of earnings and profits, the spot rate on the date such distribution is included in income, in the case of an actual or deemed sale or exchange of stock in a foreign corporation treated as a dividend under section 1248, the spot rate on the date the deemed dividend is included in income, in the case of any amounts included in income under section 951(a)(1)(A) or 1293(a), the average exchange rate for the taxable year of the foreign corporation, or in the case of any other qualified business unit of a taxpayer, the average exchange rate for the taxable year of such qualified business unit. setting forth procedures to be followed by taxpayers with qualified business units using a net worth method of accounting before the enactment of this subpart, limiting the recognition of foreign currency loss on certain remittances from qualified business units, providing for the recharacterization of interest and principal payments with respect to obligations denominated in certain hyperinflationary currencies, providing for alternative adjustments to the application of section 905(c), providing for the appropriate treatment of related party transactions (including transactions between qualified business units of the same taxpayer), and setting forth procedures for determining the average exchange rate for any period.