§ 1378. Taxable year of S corporation

(a) General rule

For purposes of this subtitle, the taxable year of an S corporation shall be a permitted year.

(b) Permitted year defined

For purposes of this section, the term “permitted year” means a taxable year which—

(1) is a year ending December 31, or

(2) is any other accounting period for which the corporation establishes a business purpose to the satisfaction of the Secretary.

For purposes of paragraph (2), any deferral of income to shareholders shall not be treated as a business purpose.

U.S. Code