The IRS does not have one single “fraud department” for the public; for fraud, waste, abuse, or misconduct involving IRS employees or IRS programs, the Treasury Inspector General for Tax Administration (TIGTA) is the main reporting contact. TIGTA’s hotline is 1-800-366-4484.

Where to reach them

  • Phone: 1-800-366-4484.
  • TTY/TDD: 1-800-877-8339.
  • Use case: report fraud, waste, abuse, or misconduct by IRS employees or within IRS programs; you can also remain anonymous.

If you mean tax scams

If you were targeted by an IRS impersonation scam or think your identity was stolen, the IRS says to report scams and identity theft through its scam guidance, and for general IRS help the customer service line is 1-800-829-1040.

Important note

The IRS warns that scammers often impersonate IRS agents and pressure people for immediate payment; the real IRS generally contacts taxpayers by mail first.

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NeedContact
Report IRS employee/program fraud or abuseTIGTA hotline: 1-800-366-4484
TTY/TDD1-800-877-8339
General IRS customer help1-800-829-1040
TL;DR: for “IRS fraud department,” the practical answer is **TIGTA at 1-800-366-4484**.