26 CFR § 1.6043-1 - Return regarding corporate dissolution or liquidation.
(a) Requirement of returns. Within 30 days after the adoption of any resolution or plan for or in respect of the dissolution of a corporation or the liquidation of the whole or any part of its capital stock, the corporation shall file a return on Form 966, containing the information required by paragraph (b) of this section and by such form. Such return shall be filed with the district director for the district in which the income tax return of the corporation is filed. Further, if after the filing of a Form 966 there is an amendment of or supplement to the resolution or plan, an additional Form 966, based on the resolution or plan as amended or supplemented, must be filed within 30 days after the adoption of such amendment or supplement. A return must be filed under section 6043 and this section in respect of a liquidation whether or not any part of the gain or loss to the shareholders upon the liquidation is recognized under the provisions of section 1002.
(b) Contents of return -
(1) In general. There shall be attached to and made a part of the return required by section 6043 and paragraph (a) of this section a certified copy of the resolution or plan, together with any amendments thereof or supplements thereto, and such return shall in addition contain the following information:
(ii) The place and date of incorporation;
(iii) The date of the adoption of the resolution or plan and the dates of any amendments thereof or supplements thereto; and
(2) Returns in respect of amendments or supplements. If a return has been filed pursuant to section 6043 and this section, any additional return made necessary by an amendment of or a supplement to the resolution or plan will be deemed sufficient if it gives the date the prior return was filed and contains a duly certified copy of the amendment or supplement and all other information required by this section and by Form 966 which was not given in the prior return.