Mike O'Connor

Michael O'Connor

Principal Emeritus

+1 (708) 420 5971

Leave a messagearrowCreated with Sketch.

Mike is a principal emeritus with Baker Tilly’s tax practice. He has more than 40 years of U.S. and international experience in public accounting and a wide variety of industries. His experience includes serving as as tax director in the merger and acquisition group at an internationally recognized firm.

He also has experience as tax director at a multi-billion-dollar global printing company, as global director of tax accounting at a multi-national food service company and senior director of tax at a large, publicly held pharmaceutical manufacturer and distributor.

Mike is actively involved in providing tax services in areas such as tax structuring of complex private equity investments, tax due diligence and tax planning related to partnerships, corporations, and closely held S-Corporations across various industries including (but not limited to) healthcare, pharmaceutical, transportation, aviation, professional services, manufacturing, retail (both online and brick and mortar), financial services, technology and peer-to-peer sales. Recently, his focus has centered on developing tax efficient structures for private equity healthcare investments with complex corporate practice of medicine regulatory concerns.

  • Extensive experience and deep technical knowledge in tax issues with respect to private equity transactions and strategic acquisitions
  • Strengths include leadership and communication skills
  • Recurring presenter to multiple organizations such as Valuation Research Corporation for purposes of tax transaction education


Chicago, IL


Bachelor of Arts in accounting
Lewis University (Romeoville, Illinois)