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 May 14, 2024 — Springfield, Willard residents indicted in cocaine conspiracy May 14, 2024 — Brookland man pleads guilty to tax evasion May 14, 2024 — Platte Woods business owner sentenced for failing to pay taxes More press releases