65 ILCS 5/8-11-3
The corporate authorities of any municipality may tax persons engaged in the business of selling cigarettes at retail, at a rate of not exceeding one cent per package of 20 cigarettes and may provide for the administration and enforcement of such tax, and for the collection thereof from the persons subject to the tax, or their suppliers, or from taxpayers and suppliers, as the corporate authorities determine to be necessary or practicable for the effective administration of the tax.
The tax herein authorized may not be levied during any period in which there is in force a municipal retailers' occupation tax levied under authority of Section 8-11-1. The adoption of a municipal retailers' occupation tax shall not, however, affect liabilities, obligations and penalties incurred by any persons pursuant to an ordinance or resolution imposing a cigarette tax under this Section 8-11-3 and providing for its administration and enforcement, in respect to any period during which the cigarette tax has been in effect. Nor shall any suit, action or remedy instituted or authorized under the cigarette tax ordinance or resolution be abated or otherwise affected by the adoption of a municipal retailers' occupation tax ordinance or resolution.
65 ILCS 5/8-11-3