Pub. L. 82-183, tit. IV, sec. 503
AVERAGE BASE PERIOD NET INCOME IN CASE OF CERTAIN FISCAL YEAR TAXPAYERS.
SEC. 503. AVERAGE BASE PERIOD NET INCOME IN CASE OF CERTAIN FISCAL YEAR TAXPAYERS. Section 435 (d) (relating to the general average method for the computation of average base period net income) is hereby amended by adding at the end thereof the following: “For the purpose of the computations under this subsection in the case of a taxpayer whose first taxable year under this subchapter is a taxable year which either began before January 1, 1950, or was preceded by a taxable year beginning before January 1, 1950, and ending after March 31, 1950, there shall be substituted for the base period of the taxpayer the period of 48 consecutive months ending March 31, 1950, if such substitution produces a lesser tax under this subchapter for the taxable year for which the tax is being computed. In computing the average base period net income for such substituted period, the excess profits net income for January, February, and March of 1950 shall be computed by use of the ‘weighted excess profits net income’, as defined in section 435 (e) (2) (E), for the taxable year in which such months fall.”