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The IRS is the U.S. government agency responsible for tax collection and tax law enforcement.
The California Franchise Tax Board collects state personal income tax and corporate income tax of California.
The California Department of Tax and Fee Administration (CDTFA) offers convenient online filing services for eligible accounts to file tax returns, prepayments, reports, and claims for refund (Motor Fuels Tax accounts only).
California Business information.The State Board of Equalization administers Property Tax, Alcoholic Beverage Tax, and Tax on Insurers programs.