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Mark Heroux

Principal, J.D.

Mark Heroux, Principal in the Tax Services Group at Baker Tilly Virchow Krause, LLP, joined the firm in 2008. He has more than 25 years of tax litigation, technical, and program management experience. Mark specializes in IRS procedures, controversy, and dispute resolution. He leads the IRS practice and procedures and unclaimed property groups, and provides tax and business advisory services to middle-market and large companies, high-net-worth individuals, and tax-exempt organizations.


  • Advises clients on international, federal, and state corporate and individual taxation with an emphasis on risk management, FIN 48 planning and compliance, FATCA planning and compliance, and other reporting and disclosure issues
  • Provides advice on unclaimed property including representation in state voluntary disclosure agreement proceedings
  • Provides tax planning and compliance advice to tax-exempt and governmental entities
  • Provides complete representation at IRS Exam and Appeals
  • Provides advice on employment, excise, gift, and estate tax issues
  • Provides advice on banking issues such as third-party liability, back-up withholding, and withholding reporting requirements; tax-exempt interest; REO costs; bad debts; nonaccrual interest; worthless stock; and valuations
  • Provides advice on insurance issues including captive insurance company formation and defense, split-dollar life insurance, allocation of reinsurance under IRC section 845, and provides review of NAIC annual statements
  • Provides advice on employee benefit plans; transfer pricing; accounting methods; and the research credit and other incentives and credits, and leads the firm in providing its clients with audit defense services for these issues
  • Practice leader in alternative dispute resolution, including arbitration, mediation, Pre-Filing Agreements, and Fast-Track Settlement
  • Provides assistance with 9100 relief for missed elections and works with IRS Service Centers to correct errors to clients' accounts
  • Provides advice on ruling requests and the filing of claims for refund
  • Provides advice on actual and anticipated federal and international tax disputes
  • Former IRS insurance industry counsel
  • Provided advice and guidance to the IRS Examination, Collection, and Criminal Investigation Divisions, as well as to the IRS Service Center Directors and the Service's Taxpayer Advocates


  • Chicago Tax Club
  • American Bar Association, Tax Section
  • Illinois CPA Society
  • Baker Tilly International, North American Tax Committee
  • Baker Tilly International, International Tax Committee
  • Unclaimed Property Professionals’ Organization
  • Real Estate Investment Association


University of New Hampshire (Concord, New Hampshire)
Juris Doctor

Colby College (Waterville, Maine)
Bachelor of Arts