Ill. Admin. Code tit. 86 § 150.405
Retailers subject to any of the local taxes administered by the Department (e.g., Home Rule Municipal Retailers' Occupation Tax, Special County Retailers' Occupation Tax for Public Safety, Non-Home Rule Municipal Retailers' Occupation Tax, Home Rule County Retailers' Occupation Tax, Metro East Mass Transit District Retailers' Occupation Tax, County Water Commission Retailers' Occupation Tax, or Regional Transportation Authority Retailers' Occupation Tax or a combination thereof) may use the charts in Table A to determine tax for the appropriate combined rate of tax, or multiply the transaction amount by the appropriate combined rate of tax, rounding up to the nearest unit.
Ill. Admin. Code tit. 86, § 150.405
Amended at 24 Ill. Reg. 10728, effective July 7, 2000