By Rick Yandle, Esq., CPA — federal criminal & civil tax defense
If you are the target of a federal criminal tax investigation in 2026, the part that has not changed is who investigates you: IRS Criminal Investigation still does that. What has changed — twice in under a year — is which part of the Justice Department owns the case once the IRS refers it. As of late August 2026, federal criminal tax enforcement sits inside a new National Fraud Enforcement Division (NFED).
Here is how it got there — and why, for almost everyone, the front line is unchanged. A federal criminal tax case still begins with IRS Criminal Investigation, and the early, pre-charge stage is still where a defense has the most room to work. The reshuffle changed the prosecutor's letterhead, not where the fight starts.
How a federal tax case has always routed differently
Federal tax crimes have never been prosecuted the way an ordinary federal offense is. A U.S. Attorney can take a bank-robbery or a garden-variety wire-fraud case into a grand jury on their own authority. A tax case has long required something more.
The investigation begins with IRS Criminal Investigation (IRS-CI), the agency's federal law-enforcement arm. But before the government opens or expands a grand-jury investigation into tax violations, and again before it files tax charges, the matter has historically required centralized Department authorization — for years, through the Justice Department's Tax Division — subject to certain delegated exceptions under which specified categories could be initiated or declined by a U.S. Attorney's Office without prior approval. That review reached not only Title 26 counts like evasion (§ 7201) and failure to pay over trust-fund taxes (§ 7202), but tax-related Title 18 charges built on the same conduct. After authorization, the U.S. Attorney's Office generally handled the prosecution, sometimes with Department tax trial attorneys assisting or co-counseling.
The purpose of that centralized review was uniformity — and, from the defense side, it was also an opportunity: a pre-charge checkpoint where a case could be narrowed, conferenced, or declined before charges were ever brought.
What changed — twice — in under a year
The office that performs that review has been reorganized in two steps.
Step one — December 2025. Effective December 9, 2025, the Department abolished the standalone Tax Division. Its civil tax functions moved to the Civil Division; "all criminal proceedings arising under the internal revenue laws" moved to the Criminal Division. (Transfer of the Functions of the Tax Division, 90 Fed. Reg. 57139.)
Step two — 2026. On April 7, 2026, Acting Attorney General Todd Blanche established the National Fraud Enforcement Division and gave it operational control of three existing Criminal Division components — the Tax Section, the Health Care Fraud Unit, and the Market, Government, and Consumer Fraud Unit — tied to Executive Order 14395 and the administration's task force on fraud in federally funded programs. A Final Rule published August 18, 2026 (91 Fed. Reg. 53357), effective August 24, 2026, then amended the organizational regulations so that "all criminal proceedings arising under the internal revenue laws" are now assigned to the NFED (28 C.F.R. § 0.70(b)); the Criminal Division's own regulation (§ 0.55) no longer carries that tax function. The Department has said the division will reach roughly 500 attorneys and staff, with a designated NFED prosecutor detailed in every federal district.
Net effect: in about eight months, criminal tax prosecution moved from the Tax Division, to the Criminal Division, to the Criminal Division's Tax Section under the NFED.
You can watch the transition in the releases
The reorganization is still visibly mid-stride. Consider the two federal tax matters the Department announced the week of August 25, 2026:
The Oregon sentencing release (Aug. 25) credited its trial attorney as being from "the Criminal Division's Tax Section," while separately naming Assistant Attorney General Colin McDonald and tagging the NFED as the component.
The Brooklyn return-preparer release (Aug. 28) credited its trial attorneys as being from "the National Fraud Enforcement Division's Tax Section."
Two releases, the same week, two different labels for the same set of prosecutors. That inconsistency is evidence of a transition in progress — not proof that either matter was cleanly relocated overnight.
What did not change
This is the part that matters most, and the part easiest to overstate.
IRS-CI still runs the criminal investigation — it is still the front line. The special agents, the summons power, the administrative referral — unchanged. (Other agencies can appear in mixed matters, but the tax-investigation function itself did not move.)
The statutes are untouched. Evasion under § 7201, the pay-over duty under § 7202, false returns under § 7206 — reorganizing prosecutors does not amend the Internal Revenue Code. What the government must prove is exactly what it was.
Centralized pre-charge review remains a defining feature of federal tax prosecution — but where it now sits, and in precisely what form, is still being settled. A note of caution here, because it is easy to get wrong: the Justice Manual's criminal-tax procedures are still posted in the name of the "Tax Division" and still cross-reference a version of the organizational regulation that has since been amended. In other words, the public Manual has not yet been conformed to the new structure, so it cannot be read as a clean statement of today's operative approval process. The sensible assumption is that centralized review continues under the NFED's Tax Section; the exact mechanics should become clearer as the Department updates its guidance.
Why this matters if you are under investigation
Two practical points follow, and neither depends on how the reshuffle finally settles.
First, the pre-charge window is still the window. Whatever the current name on the reviewing office, the most valuable defense work in a criminal tax matter often happens before charges exist — presenting the defense's account, contesting willfulness, and, where warranted, seeking a declination. That opportunity survives the reorganization.
Second, this is consolidation, not a new crime. Mixed tax-and-fraud cases are not new; the Department has long been able to pair tax counts with mail-, wire-, or bank-fraud and money-laundering charges arising from the same conduct. What is new is structural — the tax portfolio and the major fraud portfolios now sit under one division, which can mean fewer inter-component handoffs and more coordinated handling. The current regulation makes the reach explicit: the division may prosecute offenses it identifies during investigations pursued within its portfolio, even offenses outside its core categories (28 C.F.R. § 0.70(k)). But that is consolidated authority under one roof, not a new crime or a new element the government must prove. The Oregon case that same week — stacked evasion, employment-tax, bank-fraud, and identity-theft counts, resolved by a June 2026 guilty plea — illustrates the kind of mixed matter the NFED now supervises, not a charging power invented in August.
For referring attorneys
If you handle white-collar, health-care, or government-contracts matters, the reorganization means a client's federal fraud exposure and their tax exposure may now be handled within the same DOJ component and more readily coordinated. A fraud matter with a tax dimension — unreported income, payroll-tax gaps, loan-application misstatements that also touch a return — is worth a look at the tax counts early, before they are resolved alongside everything else.
Federal criminal tax defense is what this practice does. If you or your client is facing an IRS Criminal Investigation referral or a Justice Department inquiry with a tax dimension, the time to get experienced counsel involved is before charges are authorized — not after.
Facing an IRS audit or criminal tax exposure? Schedule a case evaluation.