Mark L. Stone is the Managing Partner of Sales Tax Defense LLC since 2006. The firm specializes in Sales and Use Taxes. Mark's work as a New York State tax auditor as well as a Tax Manager/Principle at several prominent accounting firms over the past 30 years has earned him a reputation as one of the top professionals for multi-state Sales and Use Taxes. He is frequently invited by various organizations to speak on Sales & Use Tax issues and serves as an Expert witness testifying in tax court on behalf of clients. Mark was also an adjunct professor at Long Island University C.W. Post.
Areas of Practice • Multi-state Sales and Use Tax consulting • Sales and Use Tax audit defense • Sales and Use Tax refunds and recovery • Complex sales tax planning and research • Filing sales and use tax returns for all 50 states • Representation before government revenue agencies and auditors • Representation as expert witness in Sales and Use Tax court cases • Nexus Analysis • Advocating for clients at the Bureau of Conciliation and Mediation Services
Professional Affiliations • New York State Society of Certified Public Accountants (NYSSCPA), Member • National Conference of CPA Practitioners (NCCPAP), Member • American Institute of Certified Public Accountants (AICPA) • Chinese American Society of CPAs (CASCPA) • New York Society of Independent Accountants (NYSTAP) • Long Island Chapter of Association of Certified Fraud Examiners (LIACFE) • Jewish Business Network Long Island (JBN)
Publication Credits • Published columns in various media including Long Island Business News, Beyond the Numbers, Private Investment Forum, New York State Society of CPAs Nassau Chapter Newsletter, Daily News, Long Island Pulse Magazine, Nassau Lawyer • Quoted in various media including Crain's New York Business and Practical Accountant
Speaking Credits • New York State Society CPAs (NYCPA) Multiple Chapters, Half-Day State and Local Tax Updates • Nassau Bar Association • Suffolk Bar Association • Chambers of Commerce • National Conference of CPA Practitioners (NCCPAP) • Network of Accountants (NOA) • New York State Independent Accountants (NYSIA) • New York Sales and Use Tax for Manufacturers program, Faculty (NBI) • The Tax Institute at Long Island University (C.W. Post), Moderator and Speaker • Key Speaker, Nassau & Suffolk Chapters Half-Day Federal & State Taxation Conferences • Sales Tax Seminars for Various Accounting Firms & Law Firms
Education • Masters degree in Taxation (with Honors), C.W. Post, Long Island University 2003 • Bachelor of Science in Accounting and Information Systems, City University of New York 1992