27 C.F.R. § 25.104
(a) General. Brewer's bonds may be terminated as to liability for future removals or receipts under the following circumstances:
(b) Notification. On termination of the surety's liability under a bond, the appropriate TTB officer will notify the principal and sureties.
(31 U.S.C. 9301, 9303)
[T.D. TTB-146, 82 FR 1128, Jan. 4, 2017]