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Donations to the California Tax Foundation are tax deductible and help support tax policy research and education.

Our Federal Tax ID number is 94-2679673.

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The CalTax Foundation is a 501(c)3 not-for-profit organization funded through grants and generous donations from taxpayers. It does not take positions on state of local ballot measures, or local, state, or federal legislation. The CalTax Foundation also does not endorse, support, or oppose any political parties or candidates for public office.​​​​