On 1 July 2021 the Dutch Management and Supervision of Legal Entities Act (WBTR) came into force. Five years later, on 1 July 2026 , its most important transition period expired. Many boards of associations and foundations still have not amended their bylaws — here is what changed, what lapsed by operation of law, and what to do now. What the WBTR regulates Conflict of interest: a board member with a personal interest conflicting with the organisation's may not take part in deliberation or decis