Ill. Admin. Code tit. 50 § 2500.40
Except as stated and unless a different meaning of a term is clear from its context, the definitions of terms used in this Part that are not defined in this Section shall be the same as those used in any of the Acts in Chapter 215 of the Illinois Compiled Statutes.
"Affiliated group" means a group of companies affiliated, as of the preceding calendar year end, pursuant to Article VIII1/2 of the Code entitled Insurance Holding Company Systems [ 215 ILCS 5/131.1 through 131.28].
"Annual return" means the information filed pursuant to Section 410 of the Illinois Insurance Code.
"Check" means corporation check, personal check, money order or cashier's check.
"Code" means the Illinois Insurance Code [215 ILCS 5].
"Corporate and replacement income tax" means the income tax described in Section 201(a), (b), (c) and (d), and paid pursuant to Sections 601 and 803, of the Illinois Income Tax Act [35 ILCS 5].
"Department" means the Department of Insurance.
"Director" means the Director of Insurance.
Ill. Admin. Code tit. 50, § 2500.40