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Leadership Team

Leslie S. Hahn
Leslie S. Hahn
Principal
313.230.0104

PRIVATE SECTOR EXPERIENCE
Current
  • Principal, Ryan, Detroit office
    –  Specializes in providing transaction tax consulting services to the
        manufacturing and automotive industries.
    • Board of Directors, Professional Development Committee, Ryan
      –  Responsible for the administration and development of Ryan’s
          internal technical training courses.
      • Seventeen years experience in transaction tax, covering a broad range of commercial and industrial sectors, including retail, wholesale, professional services, contracting, government contracting, and manufacturing.
      • Seven years of concentration in the automobile manufacturing industry.

      Previous
      • Senior Manager, State and Local Tax Services, national
        accounting firm
      • Manager, Sales and Use Tax, regional accounting firm

      PUBLIC SECTOR EXPERIENCE
      Previous
      • Tax Commissioner Agent, State of Ohio Department of Taxation, Sales and Use Tax Division

      PUBLIC PRESENTATIONS
      Ms. Hahn lectures on various tax topics for Ryan clients and various professional organizations.

      PROFESSIONAL AFFILIATIONS
      • Institute for Professionals in Taxation
      • Ohio Board of Accountancy

      EDUCATION/ACCREDITATION
      • Bachelor of Arts Degree, Accounting, Mount Union College
      • Certified Member of the Institute (CMI), Institute for Professionals in Taxation
      • Certified Public Accountant (CPA), Licensed in Ohio
      Governor Vetoes Major Changes to Texas Enterprise Zone Program.
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      The Texas Supreme Court (“Court”) has upheld a refund of sales taxes paid by a Ryan client on items resold to the United States government.... >More


      Ryan Forms Strategic Alliance with Capín, Ibáñez & Asociados to Support Continued Expansion of International Tax Practice in Latin America.
      Ryan, a leading global tax services firm with the largest indirect tax practice in North America, today announced a strategic alliance with Mexican law firm... >More

      Ryan Forms Strategic Alliance with WFaria Consulting to Support Continued Expansion of International Tax Practice in Latin America.
      Ryan, a leading global tax services firm with the largest indirect tax practice in North America, today announced a strategic alliance with WFaria Consulting, a... >More
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