Jonathan P. Decatorsmith

Jonathan P. Decatorsmith

IIT Chicago-Kent College of Law, Chicago, IL
  • Tax Law
  • Illinois
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Chicago tax attorney Jonathan Decatorsmith has been practicing tax law for more than 30 years. Prior to joining Chicago-Kent, Decatorsmith was a senior trial attorney and internal instructor with the Internal Revenue Service for 11 years. He has tried more than 50 cases before the United States Tax Court, U.S. District Court, 7th Circuit Court of Appeals, and Illinois Independent Tax Tribunal. He previously served as an adjunct professor at DePaul University in Chicago and the University of Minnesota.

Practice Area
    Tax Law
    Business Taxes, Criminal Tax Litigation, Income Taxes, International Taxes, Payroll Taxes, Sales Taxes, Tax Appeals, Tax Audits, Tax Planning
Additional Practice Areas
  • Tax Controversy
  • Examination and Audit Representation
  • Administrative Appeals
  • Tax Court Litigation
  • Penalty Abatement
  • Innocent Spouse Claims
  • Return Preparer Representation
  • Illinois State Tax Disputes
  • Tax-Exempt Organization Formation and Compliance
  • Tax and Business Transaction Counseling
  • Credit Cards Accepted
Jurisdictions Admitted to Practice
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  • English: Spoken, Written
Professional Experience
Director of Clinical Education and Clinical Professor of Law
IIT Chicago-Kent College of Law, Chicago, IL
- Current
Oversees all of Chicago-Kent’s clinical education programs. Supervises the Tax Clinic and teaches courses on federal tax practice and procedures, tax fraud, and estates and trusts.
Managing Attorney
The Tax Practice of IIT Chicago-Kent College of Law
- Current
Senior Associate
BlueDog, Olsen and Small, Minneapolis, MN
Adjunct Professor
University of Minnesota, Minneapolis, MN (1996-1999)
Senior Trial Attorney and Internal Instructor
Chief Counse Office of the Internal Revenue Service, Chicago, IL
Adjunct Professor
DePaul University, Chicago, IL
University of Colorado School of Law at Boulder
J.D. (1986)
Honors: Honors and Awards Lead Instructor for the National Trial Skills School, 1995 Midwest Attorney of the Year, 1994
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University of Illinois
B.A. (1983)
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Lead Instructor for the IRS National Trial Skills School, 1995
IRS National Trial Skills School
Midwest Attorney of the year
Professional Associations
American Bar Association
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Chicago Bar Association
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State Bar of Illinois  # 6193962
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Articles & Publications
Illinois Jurisprudence, Immigration, Chp. 24 Taxation (October 2014)
Websites & Blogs
Chicago Tax Attorney | IRS Dispute Resolution | Illinois Tax Dispute Resolution
Social Media
Contact & Map
Chicago Location
565 West Adams Street
Suite 600
Chicago, IL 60661
Telephone: (312) 906-5041
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