⏰ This entry is due for review. Information may not reflect the latest regulations.
Taxes
IL
IL Corporate Income Tax
Illinois imposes a flat 9.5% total corporate income tax rate, comprising a 7% income tax and a 2.5% personal property replacement tax, on net income attributable to Illinois. C corporations file Form IL-1120 with the Department of Revenue. Illinois uses a single sales factor for apportionment.
Official Source:
IL Department of Revenue
Always verify current information directly with this agency.