When can I close the estate and distribute the assets? The simplest way for beneficiaries to ensure the trustee is not abusing their authority or mishandling trust assets is to review trust accountings.Can a California trustee require a beneficiary to sign a release in order to get a distribution from a trust? Lindsey Munyer, Partner at Keystone Law Group, discusses the rights of trust beneficiaries and the steps they can take to enforce them. To cancel a Form TSP-3 already on file without naming new beneficiaries, check the box in Item 10, sign and date the form, and have it witnessed. Sample letter to trustee requesting accounting. California.