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  1. Report a tax scam or fraud | Internal Revenue Service

  2. About Form 3949-A, Information Referral - Internal Revenue Service

  3. Exposed! What Happens When You Report Someone to the IRS …

  4. How to Turn Someone In to the IRS: Reporting Tax Fraud - wikiHow

  5. Submit a Complaint | U.S. Treasury Inspector General for Tax ...

  6. How to Report a Tax Evader - Investopedia

  7. IRS Form 3949-A - How to Report Tax Evasion & Fraud?

  8. Whistleblower FAQ: Reporting Tax Fraud To IRS

  9. IRS Fraud Hotline: Where to Report Suspected Tax Cheats