26 C.F.R. § 1.332-1
Under the general rule prescribed by section 331 for the treatment of distributions in liquidation of a corporation, amounts received by one corporation in complete liquidation of another corporation are treated as in full payment in exchange for stock in such other corporation, and gain or loss from the receipt of such amounts is to be determined as provided in section 1001. Section 332 excepts from the general rule property received, under certain specifically described circumstances, by one corporation as a distribution in complete liquidation of the stock of another corporation and provides for the nonrecognition of gain or loss in those cases which meet the statutory requirements. Section 367 places a limitation on the application of section 332 in the case of foreign corporations. See section 334(b) for the basis for determining gain or loss from the subsequent sale of property received upon complete liquidations such as described in this section. See section 453(d)(4)(A) relative to distribution of installment obligations by subsidiary.
26 C.F.R. §1.332-1