There is provided a technology associated with a terminal apparatus, a base station apparatus, a communication system, a notification method, and an integrated circuit, in all of which the capability of the terminal apparatus is efficiently notified. The terminal apparatus configures multiple pieces of terminal apparatus capability information that include information indicating whether or not to support transmission of multiple physical uplink control channels in a secondary cell, and information indicating whether or not to support data transfer control that is independent of a primary cell and the secondary cell, and transmits a terminal apparatus capability message including the multiple pieces of terminal apparatus capability information, to the base station apparatus.