The IAFSS is managed by the 10 trustees, 9 of whom are elected by the membership, and the immediate Past Chair, who is an ex-officio member. The trustees are officers of the organization. As a registered Charitable Incorporated Organization (CIO) in England, at least one trustee must reside in England or Wales.

To coordinate member-facing activities of the IAFSS, there is a Membership Advisory Council (MAC) that consists of 18 members elected by the membership. Starting with the 2023 election, the MAC will have six (6) members from each of the IAFSS’ three regions: Americas (A), Europe, Middle East and Africa (E/ME/A) and Asia-Oceania (AO). The scope of the MAC is to advise and make representations to the charity trustees: to relevant issues or needs within the regions they represent; to appoint from their ranks non-trustee members of IAFSS committees, with the exception of the Executive and Nominating Committees; and to provide representation of, and exchange of information with, organizations which the charity may have professional liaison. The members of the MAC elect from their ranks a Co-Chair of the MAC, who serves with the Vice Chair Membership Advisory Council (MAC) and Symposium Planning Committee (SPC) trustee.

The current lists of Trustees and Membership Advisory Council are provided below.