Illinois Sales Tax Attorney
Illinois has one of the most complex sales tax structures in the country — origin-based sourcing, layered local taxes, and aggressive IDOR audit programs that target entire industries simultaneously. Our Illinois attorneys know exactly where auditors get it wrong.
Who Handles Your Illinois Matter
Shanan Terale Essick, Esq.
Sales Tax Audit Defense · Multi-Entity Structuring · SALT Controversy
- JD/MBA, Northwestern Pritzker School of Law & Kellogg School of Management
- BA Economics, Columbia University
- Former Attorney at Kirkland & Ellis, Ropes & Gray, Cahill Gordon & Reindel
- SALT Exposure & Multi-Entity Structuring
What We Handle in Illinois
Audit Defense
Illinois Department of Revenue (IDOR) selected your business. We step in immediately, manage all communications, and build your defense from day one.
Learn More →Appeals
A bad audit result is not final. We challenge assessments through the Illinois administrative process and into court if necessary.
Learn More →Litigation
When administrative options are exhausted, we take it to court. Sales tax litigation in Illinois requires attorneys who know exactly how these cases are tried.
Learn More →Voluntary Disclosure
Undisclosed Illinois sales tax exposure does not have to become an audit. A VDA resolves the past with reduced penalties before the state finds you first.
Learn More →Illinois Coverage
Sales Tax Legal represents businesses across Illinois — from major metropolitan areas to regional markets. Wherever the audit notice came from, we can help.
Not seeing your city? We serve all of Illinois. Contact us to confirm coverage.
Illinois Sales Tax Audit Guide
How Illinois Department of Revenue (IDOR) audits work, what triggers them, how to respond, and what to expect at every stage.
Facing a Illinois Sales Tax Audit?
Tell us what you received and where you are. We will tell you exactly what it means and what to do next.
Speak With an AttorneyAttorney Advertising. Prior results do not guarantee similar outcomes. Sales Tax Legal is a law firm. Gerald J. Donnini II is licensed to practice law in Florida and the District of Columbia. Illinois matters are handled by Shanan Terale Essick, Esq., licensed in Illinois, working in association with Sales Tax Legal. Results may vary based on specific facts and legal circumstances.