Breen M. Schiller

Breen M. Schiller

BREEN M. SCHILLER is a partner with Horwood Marcus and Berk Chartered where she concentrates her practice in state and local tax planning and the resolution of state and local tax controversies for multi-state and multi-national corporations.  She advises Fortune 500 companies as well as mid-size and closely-held businesses and start-up companies on issues related to all types of state and local tax, including income tax, sales/use tax, franchise tax, public utility and motor fuel taxes, transaction taxes, gross receipts-based taxes and unclaimed property.  Breen has represented clients across the country on diverse income tax engagements such as nexus, business/nonbusiness income, apportionment, unitary business principle, combined reporting, federal change reporting and credits and deductions and various sales and use tax engagements such as nexus, exemptions, and inclusions and exclusions from the tax base, in addition to e-commerce, sharing economy and cloud-computing issues and hotel occupancy tax related issues.  This experience helps Breen assist her clients in developing innovative solutions for multistate tax issues as well as the practical resolution of disputes. 

Breen has spoken on state and local tax matters for the Council on State Taxation (COST), the Institute for Professionals in Taxation (IPT), the Paul J. Hartman State Tax Forum and Tax Executives Institute (TEI), Taxpayers' Federation of Illinois (TFI), Chicago Tax Club, the Center for Professional Education (CPE), the Illinois CPA Society, the Interstate Tax Corporation, and the National Business Institute. Breen is a co-author of CCH's Annual Guidebook to Illinois Taxes, and she has had articles published in The Journal of State Taxation, the IPT Insider, State Tax Notes and The Journal of Multistate Taxation.  Breen currently serves as one of the co-chairs of TFI's local taxes committee as well as the chair of the Tax Administration Committee for the Chicago Tax Club and the Chair of IPT's 2017 Annual Conference Income Tax Section.      



  • Emerging Lawyer, 2015-2018
  • Institute for Professionals in Taxation, New Member Achievement Award, 2017
  • Institute for Professionals in Taxation, Special Topic of the Year Award, 2016


  • Chicago Bar Association, State and Local Tax Committee
  • Chicago Tax Club
  • Institute for Professionals in Taxation, Income Tax Committee Chair
  • Journal of State Taxation, Advisory Board Member
  • American Bar Association, State and Local Tax Committee
  • Illinois Bar Association, State and Local Tax Committee
  • Institute for Professionals in Taxation, Sales Tax Symposium Committee Vice Chair


Practice Groups


Industries Served

  • Automotive Manufacturing & Dealerships
  • Banking
  • Broadcast Media
  • Construction
  • Energy & Utilities
  • Entrepreneur/Start-Up Companies
  • Financial Services
  • Food/Beverage Services & Hospitality
  • Healthcare
  • Information Technology
  • Leasing Companies
  • Logistics
  • Manufacturing & Distribution
  • Mortgage Companies
  • Not-For-Profit Organizations
  • Pharmaceuticals
  • Retail
  • Service Companies
  • Specialty Finance
  • Telecommunications
  • Trading Companies

News & Events



    • Contact Information
    • Bar Admissions
      • Illinois  (2007)
    • Education
      • DePaul University, J.D., 2007
      • Illinois Wesleyan University, B.A., 2003

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