DuPage, Kane, and McHenry counties have imposed a tax on the retail sale of motor fuel at a rate not exceeding 4 cents per gallon. DuPage, McHenry, and Kane counties levy the tax at the maximum rate.
Use the Tax Rate Database to look up location specific tax rates.
Form CMFT-1, County Motor Fuel Tax Return is due monthly, quarterly, or annually, based on the taxpayer’s average monthly liability. The department determines how often the return must be filed. Instructions