Indiana Code Title 30. Trusts and Fiduciaries § 30-2-8.6-19

Sec. 19. (a) Except as provided in subsection (b), a transferor may not terminate a custodial trust.

(b) A custodial trust may be terminated by the beneficiary if the beneficiary is not incapacitated.  In order to terminate the trust, the beneficiary must deliver to the custodial trustee a writing that:

(c) If not previously terminated, a custodial trust terminates on the death of the beneficiary.