Key Takeaways Tax fraud is a federal crime that can result in prison sentences of up to 5 years per count, plus fines up to $250,000 The IRS Criminal Investigation (CI) division has a conviction rate exceeding 90% — early intervention by a criminal tax attorney is critical Voluntary disclosure before an investigation begins can eliminate criminal prosecution risk entirely Understanding the difference between civil and criminal tax fraud determines whether you face penalties or prison Never speak to IRS special agents without an attorney — anything you say can be used against you in criminal prosecution Understanding Tax Fraud and Criminal Tax Offenses Tax fraud occurs when a taxpayer willfully attempts to evade or defeat a tax obligation through deception, misrepresentation, or concealment. The key word is "willfully" — the IRS must prove you intentionally violated the tax law, not that you made an honest mistake or relied on bad advice. The distinction between a civil tax matter and a criminal one is enormous. A civil fraud case means the IRS assesses a 75% fraud penalty on top of the tax you owe. A criminal fraud case means potential prison time, criminal fines, and a federal conviction on your record. At Neil Jesani Tax Resolution , our criminal tax defense attorneys handle both scenarios with the urgency they demand. How IRS Criminal Investigation Works The IRS Criminal Investigation (CI) division is the law enforcement arm of the IRS. Unlike revenue agents who conduct civil audits, CI special agents are federal law enforcement officers who carry badges and firearms and have the authority to execute search warrants, conduct surveillance, and make arrests. The CI Investigation Process Criminal tax investigations typically follow this path: Referral: A case is referred to CI, usually from a civil audit where the revenue agent identifies...