In trust law, a beneficiary or cestui que use, a.k.a. cestui que trust, is the person or persons who are entitled to the benefit of any trust arrangement. A beneficiary will normally be a natural person, but it is perfectly possible to have a company as the beneficiary of a trust, and this often happens in sophisticated commercial transaction structures. With the exception of charitable trusts, and some specific anomalous non-charitable purpose trusts, all trusts are required to have ascertainable beneficiaries.