A studbook may become a "Member" if it fulfils all the requirements as laid down in the Statutes of the WBFSH. Full members are eligible to compete at the World Breeding Championship and to appear in the WBFSH rankings for breeders and studbooks. The annual fee for a member is a minimum of €1000, plus €1 per foal registered in excess of 1000 foals per annum. Studbooks that fulfil criteria for full membership cannot apply for associate status.
Stud books that do not fulfil all the above-mentioned requirements can join as "Associates", for an annual fee of €500. Associates can attend the General Assembly, but do not get a vote.
Applicant studbooks are required to complete a Profile of Application Form, and to supply relevant documentation. Applications are sent to the WBFSH office (Morgane Libotte - morgane.libotte@wbfsh.com) for processing. Based on the application, the Executive Committee makes a recommendation to the WBFSH Board. The Board makes a decision that requires ratification by General Assembly.