Agencia Tributaria is a free mobile application designed for iPhone users, providing a range of functionalities to manage tax-related tasks efficiently. The app allows users to perform various actions such as filing taxes, scheduling appointments, and accessing notifications without the need for physical travel. It emphasizes security and user convenience through digital identity management options like Reference Number, Cl@ve, or electronic certificates.

In addition to basic tax management, the app offers virtual assistance tools, access to scheduled video calls, and the ability to subscribe to informative alerts. Users can also consult their tax debts, signed documents, and participate in auctions. The application ensures the protection of personal data and complies with relevant privacy laws, providing users with clear information about data usage and security measures.