Colin Walsh

Colin J. Walsh



+1 (312) 729 8043

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Colin Walsh is a tax principal and the practice leader of our tax advocacy and controversy services (TACS) group, a practice within Baker Tilly’s specialty tax team. An accomplished professional, Colin has served the firm since 2009 and has extensive experience in tax practices and procedures, tax controversy and dispute resolution. In addition to leading the TACS group, Colin also serves as a subject-matter authority in opportunity zones and various federal excise taxes.

  • Provides complete representation at IRS exams and appeals
  • Advises on federal and state tax issues with an emphasis on risk management
  • Negotiates with federal and state collections departments to obtain offers in compromise and installment agreements
  • Advocates for penalty abatements
  • Assists with requests for Section 9100 relief for missed tax elections
  • Negotiates voluntary disclosures for delinquent taxes
  • Advises clients on opportunity zone structuring and compliance issues
  • Illinois State Bar Association, Federal Tax Committee, president
  • Unclaimed Property Professionals Organization
  • Wisconsin Bar Association
  • Illinois Bar Association
  • Wisconsin Bar Association
  • Irish Angels Venture Capital Group, partner
  • Marquette Law School Club of Chicago, committee member
  • Notre Dame Club of Chicago
  • “Procedural avenues for taxpayers with balances due to the IRS,” co-author, The Tax Adviser, October 2020
  • “Economic development corporations: Often misunderstood tax-exempt organizations,” co-author, The Tax Adviser, October 2018
  • “Estate Stuller v United States: some lessons for horse-breeding farms,” Illinois State Bar Association Fed Tax Newsletter, March 2016
  • “Unclaimed property: unraveling the business-to-business exemptions,” co-author, The Tax Adviser, October 2015
  • “Revisiting United States v Boyle in the e-file era,” Illinois State Bar Association Fed Tax Newsletter, December 2015
  • “Debt and proving basis in flowthrough entities,” co-author, The Tax Adviser, September 2013


Madison, WI


Juris Doctor

Marquette University Law School

Bachelor of Arts in finance

University of Notre Dame