This document contains temporary regulations under section 987 of the Internal Revenue Code (Code) relating to the recognition and deferral of foreign currency gain or loss under section 987 with respect to a qualified business unit (QBU) in connection with certain QBU terminations and certain other transactions involving partnerships. This document also contains temporary regulations under section 987 providing: an annual deemed termination election for a section 987 QBU; an elective method, available to taxpayers that make the annual deemed termination election, for translating all items of income or loss with respect to a section 987 QBU at the yearly average exchange rate; rules regarding the treatment of section 988 transactions of a section 987 QBU; rules regarding QBUs with the U.S. dollar as their functional currency; rules regarding combinations and separations of section 987 QBUs; rules regarding the translation of income used to pay creditable foreign income taxes; and rules regarding the allocation of assets and liabilities of certain partnerships for purposes of section 987. Finally, this document contains temporary regulations under section 988 requiring the deferral of certain section 988 loss that arises with respect to related-party loans. The text of these temporary regulations also serves as the text of the proposed regulations set forth in the Proposed Rules section in this issue of the Federal Register. In addition, in the Rules and Regulations section of this issue of the Federal Register, final regulations are being issued under section 987 to provide general guidance under section 987 regarding the determination of the taxable income or loss of a taxpayer with respect to a QBU.