Diane L. Yetter is the “Sales Tax Nerd®” as well as a strategist, advisor, speaker, and author in the field of sales and use tax. She is president and founder of YETTER, a sales tax consulting and tax technology firm. She is also the founder of The Sales Tax Institute.
Diane works with clients of all sizes in a myriad of industries to deliver sales tax services ranging from tax technology to tax policy, planning, and training. She also regularly partners with other advisors to help them serve their clients.
She is a Certified Implementation Partner for Avalara, a Certified Training and TDM Specialist and an Accounting partner for Vertex, Inc., a Consulting partner with SOVOS, and a Certified Implementation Partner and Trainer with Thomson Reuters ONESOURCE Indirect Tax.
As a speaker, Diane is frequently asked to present to industry groups concerning sales and use tax issues including the Council on State Taxation (COST), Chicago Tax Club, Vertex User Conference, Taxpayer’s Federation of Illinois, Avalara, the National Association of Women Business Owners (NAWBO), Diversified Communications (IOFM), the Institute of Professionals in Taxation (IPT), National Association of Credit Managers (NACM), National Association for Retail Marketing Services (NARMS), Illinois CPA Society and Thomson Reuters User Conference. She was invited to testify before the U.S. Senate Committee on Finance and Subcommittee twice regarding the impact of the Wayfair decision on small businesses and remote sellers.
As an author, Diane has written articles concerning sales and use tax issues. She co-authored “No Excuses: Automation Advances Make Sales Tax Collection Easier for Everyone” for State Tax Notes and “The Best Practices of a Best-in-Class Corporate Tax Department” and “Best Practices in Transaction Tax Systems Implementation” for the Journal of MultiState Taxation and Incentives. Diane authored Drop Shipments: Taxation, Compliance and Planning and Multistate Guide to Sales and Use Tax: Manufacturing, both published by Wolters Kluwer (CCH). She was an editor for the 1995-1996 edition of the Information Technology Association of America Software & Services State Tax Report and is the author of the US Sales Tax Chapter for the IBFD VAT Worldwide Research Database. She has also appeared as an expert witness in legal matters and litigations.
Diane is a member of the AICPA, Illinois CPA Society, Chicago Tax Club, Taxpayers’ Federation of Illinois, and the Institute of Professionals in Taxation. Yetter Tax is a member of the Practitioner Connection with the Council on State Taxation and Diane represents client concerns on several task forces. She is a board member and Secretary of the Business Advisory Council of the Streamlined Sales Tax Governing Board. She also sits on the Avalara Partner Advisory Board. Diane serves on the KU Endowment Association’s Board of Trustees and is a member of the Dean’s Board of Advisors, University of Kansas School of Business where she was Chair of the Board from 2015 to 2017.
In 2025, she was named the Distinguished Alumna of the School of Business. In 2024, she was honored with the Illinois CPA Society’s Women to Watch Award as an Experienced Leader, WomELLE’s Female Voice Award and as a Top 100 Movers and Shakers of Accounting Industry in the MYCPE ONE Excellence Awards. Diane was named in Accounting Today’s 100 Most Influential People in Accounting eight times between 2011 and 2022.
As an entrepreneur, she was honored as Woman Business Owner of the Year 2020 and a 2024 Corporate Women of Achievement by the National Association of Women Business Owners (NAWBO) Chicago Chapter.
Sales Tax Institute was named by MYCPE ONE as a Next Generation Accounting Firm of the Year 2024 under the category of Growth Pioneers as well as a Best In Class Accounting Firm 2024 under the category of Learning & Development.
Diane earned a BS in accounting and business administration from the University of Kansas in 1985 and a MS in taxation from DePaul University in 1994. Prior to founding the company in 1996, Diane was a state and local tax manager in the Chicago office of Arthur Andersen LLP, the sales and use tax director for the Quaker Oats Company, and a sales and use tax auditor for the Kansas Department of Revenue.
