ECA currently has 17 members from 11 countries. All members of ECA are quality assurance agencies that undertake accreditation or accreditation-like procedures. Members pay an annual fee of EUR 4,000.

There is also the possibility for QA agencies that do not qualify for ECA membership to participate as observers in meetings of ECA. These observers pay an annual fee of EUR 2,000.

Members and observers have the right to attend all ECA General Meetings, workshops, seminars, and working group meetings. Further membership benefits include the possibility to carry out procedures for the award of the ECA Certificate for Quality in Internationalisation, and participation in the ECA Experts Exchange Platform, ECA trainings and other ECA projects.