The Autorité de contrôle prudentiel et de résolution shall determine the method for calculating contributions to the surety guarantee mechanism. These contributions are based on the total guarantee commitments covered by the guarantee. This base takes into account the risk profile of member institutions or companies. The AMF also sets the conditions under which these contributions may be refunded in the event of a downward variation in the base defined above. The AMF also sets the minimum amount payable by each member.