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Tammy Williams, CPA, CGMA


Tammy Williams is currently a Partner at HoganTaylor and is the Financial Management Services Leader in the Tulsa market. She has 25 years of corporate  and public accounting experience including serving as a Corporate Controller for a $100MM public company responsible for preparation of internal financial statements and management reports, preparation of SEC filings, and for conducting buy-side due diligence. Prior to joining HoganTaylor, Tammy co-founded a CFO-consulting practice and provided corporate controller services to small and mid-sized companies. This practice was merged into HoganTaylor in 2013.

Representative Experience

  • Provided fractional controller and CFO services to companies ranging from $1M to $100M+ in annual revenues
  • Managed the integration of finance functions and related software systems in multiple acquisitions
  • Managed the annual financial audit and annual tax return preparation process
  • Managed software automation and process improvement projects. 
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Certifications & Honors

  • Certified Public Accountant (CPA)
  • Chartered Global Management Accountant (CGMA)


  • Bachelor of Science, Accounting, Oklahoma State University

Professional & Civic Affiliations

  • American Institute of Certified Public Accountants (AICPA), member
  • Oklahoma Society of Certified Public Accountants (OSCPA), member
  • Metro Christian Academy Finance Committee, member
  • One Bag One Hope, treasurer



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