43 C.F.R. § 4.208 Renunciation of interest.
Title 43 - Public Lands: Interior
(a) Any probable heir or beneficiary, not a minor, may wholly or partially renounce intestate succession or a devise or bequest of trust or restricted property, including the retention of a life estate. To do this, the probable heir or beneficiary must file a signed and acknowledged declaration of renunciation with the deciding official before entry of the final order. (b) No interest in property renounced under paragraph (a) of this section is considered to have vested in the heir or beneficiary, and the renunciation is not considered a transfer by gift of the property renounced. Rather, the renounced property passes as if the person renouncing the interest had predeceased the decedent. (c) A renunciation filed in accordance with this section will be considered accepted when implemented in an order by a deciding official and will be irrevocable thereafter. (d) All disclaimers or renunciations previously filed with and implemented in an order by a deciding official are hereby ratified as valid and effective.
Title 43: Public Lands: Interior
PART 4—DEPARTMENT HEARINGS AND APPEALS PROCEDURES
Subpart D—Rules Applicable in Indian Affairs Hearings and Appeals
Determination of Heirs; Approval of Wills; Settlement of Indian Trust Estates
§ 4.208 Renunciation of interest.