The California Department of Tax and Fee Administration (CDTFA) is a state agency responsible for administering California's sales and use tax, as well as various other taxes and fees. It ensures compliance with tax laws and collects revenue to support state services. The CDTFA also provides resources and assistance to taxpayers, helping them understand their obligations. In addition to sales tax, the CDTFA oversees taxes related to fuel, tobacco, and cannabis, among others. The agency plays a crucial role in maintaining the state's financial health by managing tax collection and enforcement, contributing to public services and infrastructure across California.