The bill proposes a range of amendments to the Maori Purposes Act 1959. Most are focused on the Lake Rotoaira Trust and its trout fishery. The trust is an ahu whenua trust under Te Ture Whenua Maori Act 1993 and it administers Lake Rotoaira on behalf of more than 11,000 beneficiaries. The trust manages the trout fishery with functions, powers, and obligations regarding the fishery being prescribed in the Maori Purposes Act 1959. The Maori Purposes Act 1959 restricts the capacity of the trust to manage their business and other affairs on the lake. The amendments will enable the trust to manage their whenua with flexibility and autonomy. The trust supports these changes. The proposed amendments include removing the requirement to hold a trout-fishing licence to fish for species other than trout, and making it clear an entry permit does not authorise fishing on the lake. 