His professional activities include membership in the American Institute of Certified Public Accountants (AICPA) and the Vermont Society of Certified Public Accountants. Mr. Tapia is also a member of the Exempt Organizations Subcommittee of the AICPA's Tax Division, and is a member of the Vermont Museum and Gallery Alliance. Active in a number of non-profit organizations as well, he currently serves as a Trustee of the Vermont Humanities Council, and previously served as both a Trustee and Treasurer of the Vermont Symphony Orchestra, the Vermont Retail Association, and Vermont Stage Company. He also previously served as a financial advisor in the Non-Profit Technical Assistance Program sponsored by the Vermont Alliance of Nonprofit Organizations (VANPO), and has conducted workshops on accounting, auditing, tax, and financial management issues relevant to not-for-profit organizations, individuals, and small businesses for the Vermont Community Foundation, the Vermont Society of Association Executives, the Lake Champlain Regional Chamber of Commerce, the University of Vermont Extension Service Income Tax School, the Central Vermont Chamber of Commerce, the New England Museum Association, Lorman Education Services, and the National Business Institute, among others. His articles on tax planning and accounting issues have appeared in Nonprofit Vermont, the Vermont/New Hampshire Healthcare Financial Management Newsletter, the state-wide Vermont Retail Association newsletter, and Vermont Public Radio's North By Northeast.