As used in this chapter, the term "taxable income" means "Federal taxable income before net operating loss deduction and special deductions" (presently Line 28 of Page 1 of Federal IRS Form 1120 or Line 24 of Page 1 of Federal IRS Form 1120-A) as returned to and ascertained by the Federal government and as modified or adjusted under section 401(3)1. of the TRC (72 P. S. § 7401(3) 1.) and under this chapter, unless the context clearly indicates otherwise.
61 Pa. Code § 153.11
The provisions of this § 153.11 amended under section 408 of the Tax Reform Code of 1971 (72 P. S. § 7408).