EXAMPLE: In its taxable year ending December 31, 1986, Corporation A properly reports a federal net operating loss (FNOL) of $100,000, all of which is available to carry forward to its taxable years ending on or after December 31, 1987 for federal income tax purposes. Corporation A has addition modifications for its taxable year ending December 31, 1986 that exceed its subtraction modifications for that year by $5,000. For Illinois income tax purposes, the federal net operating loss available to carry forward is $95,000 (the $100,000 federal net operating loss minus the $5,000 in excess addition modifications). In its taxable year ending December 31, 1987, Corporation A deducts $97,000 of the federal net operating loss. The remainder is deducted in its taxable year ending December 31, 1988. For purposes of IITA Section 203, Corporation A's taxable income for the taxable year ending December 31, 1987 is computed without allowing $2,000 of the federal net operating loss deduction taken in that year and its taxable income for December 31, 1988 is computed without allowing any of the $3,000 federal net operating deduction. In order to avoid a double benefit, Corporation A adds back the ineligible $2,000 and $3,000 of FNOL for Illinois purposes on its Illinois return for 1987 and 1988, respectively.
Ill. Admin. Code tit. 86, § 100.2405
Added at 32 Ill. Reg. 6055, effective March 25, 2008