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State of California Franchise Tax Board

Reporting Income Tax Fraud

If you believe an individual or company is not complying with California's personal income tax or corporate income and franchise tax laws, you can report that information to Franchise Tax Board (FTB). We do not offer rewards for reporting this information.

Income tax fraud is intentionally paying less tax than you owe.

Examples of income tax fraud are:

  • Failing to report all income received.
  • Claiming to be a resident of another state while residing in California.
  • Making false or fraudulent claims for refunds.
  • Not filing state income tax returns.
  • Questionable tax practitioner practices.
  • Opening and closing of new businesses to evade taxes.
  • Preparing documents, books, and records that understate the true income or overstate the expenses of a business.

For additional information, visit our Frequently Asked Questions.

How to report income tax fraud

  • Online
  • Mail:

    PO BOX 1565

  • Fax: 916.843.2060
  • Call: 800.540.3453, M-F 8:30 a.m. - 4 p.m. (PST)

Reporting other types of fraud

If your allegation involves fraud in the following programs, please contact the agencies listed below.

Federal income tax

Payroll tax - unemployment - disability - paid family leave - payment of cash wages to avoid California withholding

Sales tax - use tax

Child support

Abusive tax shelter transactions and activities

If you believe your tax records have been affected by identity theft


Chat with an FTB Representative