(a) Change. To change a designation of beneficiary, the participant must submit to the TSP record keeper a new TSP designation of beneficiary form meeting the requirements of § 1651.3 to the TSP record keeper. If the TSP receives more than one valid TSP designation of beneficiary form, it will honor the form with the latest date signed by the participant. A participant may change a TSP beneficiary at any time, without the knowledge or consent of any person, including his or her spouse.

(b) Cancellation. A participant may cancel all prior designations of beneficiaries by sending the TSP record keeper either a new valid designation of beneficiary form meeting the requirements of § 1651.3, or a letter. If the participant uses a letter to cancel a designation of beneficiary, it must be signed and witnessed in the same manner as a TSP designation of beneficiary form; it must explicitly state that all prior designations are canceled; and the TSP record keeper must receive it on or before the date of the participant's death.

(c) Will. A participant cannot use a will to change or cancel a TSP designation of beneficiary.