IRS Criminal Investigation (CI) serves the American public by investigating potential criminal violations of the Internal Revenue Code and related financial crimes in a manner that fosters confidence in the tax system and compliance with the law. Report Tax Fraud Identify tax schemes Report tax fraud Voluntarily disclose What We Do About Criminal Investigation What we investigate Investigation process J5: Our international partnership Latest News December 16, 2022 — Five individuals sentenced in $12 million federal financial aid fraud scheme December 15, 2022 — Fifteen defendants charged in a multi-state drug trafficking organization December 15, 2022 — Cartersville businessman sentenced to federal prison for filing a false tax return More press releases