A pooled trust is also known as a d4C trust because it is authorized by US Code 1396p(d)(4)(C). It is established and managed by a non-profit organization and is funded by the individual with special needs, for that individual’s sole benefit. An individual’s pooled trust is a subaccount within a master trust, a collection of other individual trusts. The managing entity oversees the collective individual accounts within the pool as a whole. A pooled trust entity will have its own joinder agreement; the terms of the trust are controlled by the entity.