27 CFR 25.104: Termination of bonds.

(a) General. Brewer's bonds may be terminated as to liability for future removals or receipts under the following circumstances:

(1) Pursuant to application of the surety as provided in § 25.103;

(2) On approval of a superseding bond as provided in § 25.95;

(3) When a brewer discontinues business as provided in § 25.85; or

(4) When an existing brewer who becomes exempt from bond requirements terminates the bond as provided in § 25.106.

(b) Notification. On termination of the surety's liability under a bond, the appropriate TTB officer will notify the principal and sureties.