Mariano Sori - BDO Chicago

Mariano Sori

Partner; Income and Franchise Tax National and Central Region Leader


BDO Chicago Office



Executive Summary

Mariano Sori has more than 26 years of state tax consulting experience within a public accounting environment. He concentrates on income and franchise tax issues such as jurisdiction to tax, state tax base modifications, apportionment of income, business and non-business income, unitary taxation, gross receipt taxes, allocation of partnership items, and state filing options.

Mariano focuses on performing state tax diagnostic reviews designed to provide businesses with an assessment of their state tax position, including the identification of refund and prospective filing opportunities and the reduction of exposure in multiple jurisdictions. In addition, Mariano assists businesses in designing and implementing structural enhancements in order to generate long-term state tax reductions.

Mariano consults on all aspects of state income tax, including participating in mergers and acquisition transactions, representation on state tax controversy matters, and assisting companies with state tax compliance and state tax accrual reviews. He has worked with Fortune 1000 and mid-size companies in industries such as manufacturing, retail, consumer services, financial services, real estate, technology and transportation.

Professional Affiliations

American Bar Association
American Institute of Certified Public Accountants
Illinois Certified Public Accountants Society


J.D., IIT Chicago-Kent College of Law
B.S., Accounting, Indiana University