Catherine A. Battin - McDermott Will & Emery


Catherine (Cate) A. Battin represents clients in state and local tax controversies at the audit, administrative and judicial levels in numerous jurisdictions. She provides national state tax strategies for clients on a full range of state tax issues, including income tax apportionment, nexus, combination and sales tax characterization of products and services. She has defended numerous internet sellers in cases brought under the Illinois False Claims Act alleging fraudulent failures to collect and remit use tax.

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  • Negotiated very favorable settlements with the Illinois Department of Revenue, including several complete concessions
  • Negotiated prospective compliance-only settlements with the City of Chicago relating to the Personal Property Lease Transaction Tax
  • Defended successfully numerous internet retailers against claims brought under the Illinois False Claims Act

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  • The Best Lawyers in America, Tax Law, Chicago, 2018 to 2024
  • International Tax Review, World Tax, 2016, 2017, 2022 and 2023
  • Legal 500 US, 2021 and 2022
  • Law & Politics 2009, Rising Star


  • Taxpayers’ Federation of Illinois, board of trustees
  • Chicago Bar Association, chair of State & Local Tax Committee, 2013 to 2014


Chicago-Kent College of Law, LLM, Taxation, with honors, 2005
DePaul University College of Law, JD, 1999
Lake Forest College, BA, 1993


Courts/ Agencies
US District Court for the Northern District of Illinois