(a) Domestic and certain foreign corporations. The income tax return required under section 6012 of a domestic corporation or of a foreign corporation having an office or place of business in the United States shall be filed on or before the fifteenth day of the third month following the close of the taxable year.
(b) Foreign corporations not having an office or place of business in the United States. The income tax return of a foreign corporation which does not have an office or place of business in the United States shall be filed on or before the fifteenth day of the sixth month following the close of the taxable year.
(c) Exempt organizations. For taxable years beginning after November 10, 1978, the income tax return required under section 6012 and Sec. 1.6012-2(e) of an organization exempt from taxation under section 501(a) (other than an employee's trust under section 401(a)) shall be filed on or before the fifteenth day of the fifth month following the close of the organization's taxable year.
(d) Cooperative organizations. The income tax return of the following cooperative organizations shall be filed on or before the fifteenth day of the ninth month following the close of the taxable year:
(1) A farmers', fruit growers', or like association, organized and operated in compliance with the requirements of section 521 and Sec. 1.521-1; and
(2) For a taxable year beginning after December 31, 1962, a corporation described in section 1381(a)(2), which is under a valid enforceable written obligation to pay patronage dividends (as defined in section 1388(a) and paragraph (a) of Sec. 1.1388-1) in an amount equal to at least 50 percent of its net earnings from business done with or for its patrons, or which paid patronage dividends in such an amount out of the net earnings from business done with or for patrons during the most recent taxable year for which it had such net earnings. Net earnings for this purpose shall not be reduced by any taxes imposed by Subtitle A of the Code and shall not be reduced by dividends paid on capital stock or other proprietary interest.
(e) DISC's and former DISC's. The return required under section 6011(c)(2) of a corporation which is a DISC (as defined in section 992(a) shall be filed on or before the 15th day of the 9th month following the close of the taxable year. For the rule that a DISC may not have an extension of time in which to file such return, see Sec. Sec. 1.6071-1(b), 1.6081-1(a), and 1.6081-3(e). The return required under Sec. 1.6011-2(b)(1) by a former DISC shall be filed at the time it is required to file its income tax return.
(f) Cross references. For provisions relating to the time for filing a return where the last day for filing falls on Saturday, Sunday, or a legal holiday, see section 7503 and Sec. 301.7503-1 of this chapter (Regulations on Procedure and Administration). For provisions relating to the fixing of a later time for filing in the case of a return for a short period, see paragraph (b) of Sec. 1.6071-1. For provisions relating to time for filing consolidated returns and separate returns for short periods not included in consolidated returns, see Sec. Sec. 1.1502-75 and 1.1502-76. [T.D. 6500, 25 FR 12133, Nov. 26, 1960, as amended by T.D. 6643, 28 FR 3163, Apr. 2, 1963; T.D. 7244, 37 FR 28897, Dec. 30, 1972; T.D. 7533, 43 FR 6604, Feb. 15, 1978; T.D. 7896, 48 FR 23818, May 27, 1983]