Tainted income
(2) Tainted income(i) Definition. For purposes of paragraph (e)(1) of this section, the term tainted income means (A) Income or gain recognized on the sale or other disposition of tainted assets; and (B) Income derived as a result of holding tainted assets. (ii) Income presumed to be derived from holding tainted assets. In the absence of evidence establishing the actual amount of income that is attributable to holding tainted assets, the portion of a corporation's income in a particular taxable year that is treated as tainted income derived as a result of holding tainted assets shall be an amount equal to the corporation's taxable income for the year (other than income described in paragraph (e)(2)(i)(A) of this section) multiplied by a fraction, the numerator of which is the fair market value of all tainted assets acquired by the corporation (determined at the time such assets were so acquired) and the denominator of which is the fair market value of the total assets owned by the corporation at the end of such taxable year. To establish the actual amount of income that is attributable to holding tainted assets, documentation must be attached to, and filed by the due date (including extensions) of, the domestic corporation's tax return or the consolidated tax return of an affiliated group of which it is a member, as the case may be, for the taxable year in which the income is generated. See 1.1503(d)-7(c) Example 22. (3) Tainted assets defined. For purposes of paragraph (e)(2) of this section, tainted assets are any assets acquired by a domestic corporation in a nonrecognition transaction, as defined in section 7701(a)(45), any assets otherwise transferred to the corporation as a contribution to capital, or any assets otherwise received from a separate unit or a transparent entity owned by such domestic corporation, at any time during the three taxable years immediately preceding the taxable year in which the corporation ceases to be a dual resident corporation or at any time thereafter. (4) Exceptions. Income derived from assets acquired by a domestic corporation shall not be subject to the limitation described in paragraph (e)(1) of this section, and in addition shall not be treated as tainted assets as defined in paragraph (e)(3) of this section, if (i) For the taxable year in which the assets were acquired, the corporation did not have a dual consolidated loss (or a carryforward of a dual consolidated loss to such year); or (ii) The assets were acquired as replacement property in the ordinary course of business.