【How-to】How to report someone for tax evasion

Report Fraud, Waste and Abuse to Treasury Inspector General for Tax Administration (TIGTA), if you want to report, confidentially, misconduct, waste, fraud, or abuse by an IRS employee or a Tax Professional, you can call 1-800-366-4484 (1-800-877-8339 for TTY/TDD users). You can remain anonymous.