Susan E. Ryba

Baker & McKenzie LLP


Susan E. Ryba is a tax controversy partner and Chair of the Chicago Tax Practice Group. She also is a member of the Chicago office management committee and serves as the Chicago office hiring partner.

Susan focuses on federal tax controversy matters. She advises clients in a wide variety of industries, with a particular focus on companies in the technology, pharmaceutical, healthcare, and retail industries. Susan was recognized by Crain's Chicago Business as a 2022 Notable Woman in Law.

Practice Focus

Susan concentrates her practice on federal tax controversies and tax litigation that involve a wide range of international and domestic issues. She represents clients in all stages of federal tax controversies, including audits, administrative appeals, alternative dispute resolution proceedings, and litigation. She has resolved most of her matters without litigation through various dispute resolution forums, including IRS Appeals. Susan's experience encompasses a broad range of issues, including: transfer pricing, effectively connected income, subpart F, section 956 investments in US property, substance-over-form issues, worthless stock and debt deductions, withholding tax, foreign tax credits, summons enforcement, and penalties.

Professional Honors

  • Notable Woman in Law, Crain's Chicago Business 2022

Professional Associations and Memberships

  • Chicago Bar Association
  • Illinois State Bar Association
  • American Bar Association

Corporate Responsibility

  • Member, Cornell Alumni Admissions Ambassador Network


  • U.S. Tax Court~United States (2011)
  • U.S. District Court, Northern District of Illinois~United States (2006)
  • Illinois~United States (2006)
  • U.S. Court of Appeals, Second Circuit~United States


  • Ohio State University Moritz College of Law (J.D., magna cum laude, Order of the Coif) (2006)
  • Cornell University (B.S., magna cum laude) (2003)


  • English
Susan E. Ryba is a frequent speaker at seminars sponsored by the Tax Executives Institute and Bloomberg BNA. She also teaches trial skills for the National Institute for Trial Advocacy.

Firm Committee Memberships

  • Chicago Tax Practice Group Chair, 2021 - present
  • Chicago Office Management Committee, 2020 - present
  • Chicago Office Hiring Partner, 2017 - present
  • North American Tax Practice Group Tax Controversy Sub-Practice Group Steering Committee, 2014 - 2020