Tax fraud and evasion

Protect yourself against tax fraud

Overview

Tax fraud

Tax fraud is intentionally underreporting or failing to report income.

For example, they might be:

  • Claiming to be a resident of another state while residing in California
  • Making false claims for refunds
  • A suspicious tax preparer
  • Closing and reopening a business to evade taxes
  • Falsifying business records

Tax evasion

Tax evasion is an intentional act to willfully avoid paying a known tax liability.

For example, they might be:

  • Closing and reopening a business to evade taxes
  • Concealing assets or income in offshore accounts
  • Filing false tax returns or failing to file tax

For your own safety, do not:

  • Try to find out more about the fraud
  • Let anyone know you’re reporting it
  • Encourage anyone to commit a crime so you can get more information

You can report an individual or business to us if you think they’re not complying with tax laws.

Report tax fraud and evasion

Before you start

You can report anonymously, however, it helps us if you identify yourself.

  • We will not share your identity unless required by law
  • We cannot offer rewards

What you’ll need

  • The name and address of the individual/business
  • Asset and income information (vehicles, property, etc.)
  • Alleged tax violation
  • How you became aware of the alleged violation
  • Marital status
  • The individual’s spouse's/registered domestic partner’s name
  • Supporting documents (if available)
  • Your contact information (optional)

Privacy and disclosure laws prohibit us from sharing information regardless of whether we take action.

You can report tax fraud and evasion:

Online
Report tax fraud and evasion
Phone
800-540-3453
Weekdays, 8 AM to 4 PM
Fax
916-843-2060
Mail
Franchise Tax Board
PO Box 1565
Rancho Cordova CA 95741-1565

To provide additional information or correct previous information, submit another report.

If you’re sending supporting documents, include your referral number at the top of the first page.

Report a fraudulent tax preparer

Complaint type Contact
Tax preparer fraud or misconduct Franchise Tax Board
Online
Use our fraud referral report
Phone
800-504-3453
Fax
916-843-2060
Mail
Franchise Tax Board
PO Box 1565
Rancho Cordova, CA 95741

Report a noncompliant tax preparer

California law requires anyone who, for a fee or for other consideration, assists with or prepares tax returns for another person or who assumes final responsibility for completed work on a return and is not an exempt preparer to register as a tax preparer with the California Tax Education Council (CTEC). For more information see who is required to register with CTEC.

Verify a registered and licensed tax preparer:

Complaint type Contact
non-registered and unlicensed tax preparer Franchise Tax Board
CTEC Enforcement Team
Phone
916-845-6193
Fax
916-845-9391
Mail
Tax Preparer Enforcement MS F-142
Franchise Tax Board
PO Box 1468
Sacramento, CA 95812-1468
CTEC-registered tax preparer California Tax Education Council (CTEC)
Online
Tax preparer complaint form - visit CTEC

Report other types of fraud

Fraud type Contact
Federal Income Tax Internal Revenue Service
Phone
800-829-1040
Payroll Tax, Unemployment, Disability, Paid Family Leave, Payment of Cash Wages to Avoid California Withholding Employment Development Department
Phone
800-528-1783
Sales Tax, Cannabis Tax, Fuel Tax, Cigarette Tax and Tobacco Products Violations California Department of Tax and Fee Administration
Phone
888-334-3300
Child Support Your local child support agency and/or Department of Child Support Services
Last updated: 06/22/2026