The guarantee closure consists of a closure body (1) with a guarantee foil (4) and with a pour-out spout (2) as well as a closure cap (3) fitting onto the closure body (1). The pour-out spout (2) is arranged on the closure body (1) such that it may be pivoted up. The guarantee foil (4) by way of pivoting-up the pour-out spout (2) into the pour-out position is cut open and thus frees the passage to the pour-out spout. The closure body (1) comprises a relief (11) for receiving tile guarantee foil (4) and forms above this relief (11) by way of two shoulders (12, 13) arranged over one another and distanced from one another a free space (14) for receiving the lying pour-out spout (2). This is enclosed and held by a film-hinge-like material bridge (5) which in the lying condition connects the two shoulders (12, 13) with a surface which seen from the outside is concave and on the upper side of the lying pour-out spout (2) runs together to a point which defines the pivoting axis of the pour-out spout (2). On pivoting up the pour-out spout (2) the film-hinge-like material bridge (5) snaps into a permanent shape which is convex seen from the outside and thus now holds the pour-out spout (2) in the closure position.
