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Business Reinstatement · Illinois

How to reinstate an Illinois business

Illinois reinstatement takes about 2–4 weeks. These are the steps, in order, and the state's official instructions.

Open the Illinois reinstatement instructions
Opens ilsos.gov in a new tab. Portal link verified May 2026.

How reinstatement works in Illinois

A business that is not in good standing can often be reinstated quickly, which can revive a deal you would otherwise decline or lose.

Takes 2 to 4 weeksFiled by mail
  1. Pay all franchise taxes/penalties to the Dept. of Revenue to get a Letter of Tax Clearance.
  2. Submit the Clearance and an Application for Reinstatement to the SOS.

Check the business first

Confirm the entity's current status on the Illinois lookup before you start.

Open the Illinois business search

Opens apps.ilsos.gov in a new tab