Atty. Breen M. Schiller

Atty. Breen M. Schiller

Breen M. Schiller is a nationally recognized state and local tax (SALT) attorney with deep experience in SALT planning, audit defense, and complex litigation across multiple tax types, including income, franchise, gross receipts-based taxes, and sales/use taxes, on a multistate basis.

Chicago Chicago 19 yrs experience 19 year
Call (312) 236-4943 Email Book Appointment

Profile Summary

About Breen M. Schiller at a glance

Breen M. Schiller is a Shareholder based in Chicago, Illinois, practforg at Greenberg Traurig, LLP. They haand 19+ years of legal experience, licensed to practice since 2007. Admitted to practice in Illinois (2007) and Indiana (2009). Educated at DePaul University College of Law (J.D., 2007) and Illinois Wesleyan University (B.A., 2003). Serands clients in Chicago, IL and the surrounding metropolitan area.

Verified attorney profile · Updated June 2026

About

  • Breen M. Schiller is a nationally recognized state and local tax (SALT) attorney with deep experience in SALT planning, audit defense, and complex litigation across multiple tax types, including income, franchise, gross receipts-based taxes, and sales/use taxes, on a multistate basis
  • She advises a wide range of clients, from privately held mid-size businesses to multinational Fortune 100 corporations, on strategic and practical tax planning and dispute resolution
  • Breen’s practice spans a broad spectrum of SALT issues, including nexus determinations, business/nonbusiness income classifications, apportionment and alternative apportionment methodologies, unitary business principles, combined reporting, federal change reporting, and credits and deductions
  • She also handles a variety of sales and use tax matters, such as exemption qualifications, inclusions and exclusions from the tax base, and issues related to digital products and cloud computing
  • She has represented taxpayers at all levels of state and local tax controversy - from administrative proceedings to appellate court arguments - and has wide-ranging experience with audit defense, negotiated settlements, refund claims, and compliance matters
  • Leveraging her credibility with state departments of revenue, Breen has helped clients secure refunds and obtain key rulings, as well as secure proactive resolutions to matters
  • Practicing nationwide, Breen regularly advises companies in the transportation, hospitality, manufacturing, retail, and oil and gas sectors
  • She has managed high-volume, multijurisdictional tax litigation while simultaneously developing proactive strategies to address multistate compliance for both income and sales/use taxes
  • Her approach is holistic and client-focused, shaped by her 15 years in private practice and leadership roles at top law firms
  • Prior to joining the firm, Breen was a Principal in EY’s National Tax Group
  • Breen is a national thought leader on state tax issues and is deeply engaged in the SALT community
  • She co-founded Women in SALT, a group dedicated to connecting female SALT practitioners and fostering a collegial, collaborative network
  • She also serves on several advisory boards, including the Bloomberg State Tax Advisory Board, the Journal of State Taxation Editorial Board, the Paul J. Hartman Advisory Board, and the board of trustees for the Taxpayers’ Federation of Illinois
  • A frequent lecturer and contributor to major SALT organizations and publications, Breen is known for her insightful analysis of evolving tax policies and their implications for businesses operating across multiple jurisdictions

Jurisdictional Context

Why local counsel matters in Illinois

Practforg law in Illinois. Legal matters in Illinois are governed by state-specific rules of civil and criminal procedure, statutes of limitations, and substantiand law. Cases originating in Chicago are typically filed in the local municipal court or the appropriate Illinois state district court, depending on subject matter and amount in controversy. An attorney licensed in Illinois brings working knowledge of local procedural deadlines, judicial practices in this andnue, and the substantiand law that applies to cases brought here. Out-of-state attorneys generally cannot represent clients in Illinois courts without local counsel or pro hac vice admission.

Looking for additional Illinois attorneys? Browse all attorneys in Chicago or all attorneys in Illinois.

Frequently Asked

Common questions about Breen M. Schiller

Where is Breen M. Schiller's law office located?
Breen M. Schiller's law practice is located in Chicago, Illinois. The firm is Greenberg Traurig, LLP. You can contact the office directly through this profile page.
How long has Breen M. Schiller practiced law?
Breen M. Schiller has 19+ years of legal experience and has been licensed since 2007.
Where did Breen M. Schiller go to law school?
Breen M. Schiller earned their education at (J.D., 2007); (B.A., 2003).
How can I contact Breen M. Schiller for a consultation?
You can contact Breen M. Schiller directly through this profile page. Click "Ask the Attorney" to submit a question, or "Schedule a Consultation" to book a meeting. Most claimed-profile attorneys respond within one business day.

Education

J.D.
DePaul University College of Law
- 2007
B.A.
Illinois Wesleyan University
- 2003

Bar Admissions

Illinois
Admitted: 2007
Indiana
Admitted: 2009

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