Mark L. Stone is the Managing Partner of Sales Tax Defense LLC. He founded the firm in 2008. The firm specializes in Sales, Use and Transaction Taxes. Services include sales and use tax consulting, audit defense, settlement negotiation, and preparing and filing sales tax returns in multiple states. He represents companies and individuals before state taxing authorities and through the appeals process. Mark has testified as an expert witness in sales and use tax court cases as well as assisted attorneys and other accountants in their representation of clients in criminal investigations.
Mark began his career as a sales tax auditor for the New York State Department of Taxation and Finance. After gaining experience working for the State, he moved on to work at several prominent accounting firms such as Raich Ende Malter LLP and The Marcum Group LLP. In 2008, he decided to open his own firm solely focusing on sales and use tax. During this time, he was also an adjunct graduate school professor at Long Island University C.W. Post Campus.
Mark has written articles in several publications such as Long Island Business News, New York State Society of CPAs Nassau Chapter Newsletter, Daily News, and Long Island Pulse Magazine.
He is a frequent speaker for different organizations and has spoken for the New York State Society of CPAs, the Nassau County Bar Association, the Suffolk County Bar Association, as well as for various accounting firms and businesses.