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 Oct. 15, 2024 — Union County tax preparer admits assisting in preparation of fraudulent tax returns Oct. 15, 2024 — Nationwide telecommunications provider and its CEO plead guilty to massively defrauding federal government programs meant to aid the needy Oct. 15, 2024 — New Jersey construction company owner admits tax evasion More press releases