DOJ Backs Industry Challenge to Illinois Digital Asset Tax Act

The U.S. Department of Justice is backing a legal challenge to Illinois' Digital Asset Tax Act, a move that puts federal weight behind industry plaintiffs arguing the state's tax on digital assets is unconstitutional. Illinois has agreed to suspend the law's effect and enforcement until July 1, 2027, according to the terms disclosed in the case.

The suit was filed by The Digital Chamber and the Illinois Blockchain Industry Association. Their core claim is straightforward: the tax, as written, violates the U.S. Constitution. The Department of Justice's decision to side with the challengers signals that federal authorities see a genuine legal defect in how Illinois structured its digital asset levy, not merely a policy disagreement.

What happens to the Illinois tax now?

Nothing, immediately. That is the practical effect of the suspension. Illinois will not enforce the Digital Asset Tax Act against anyone while the stay holds, and the stay runs to July 1, 2027. For crypto businesses operating in the state, that means the tax is effectively dormant for roughly two years while the litigation plays out.

The case is also bigger than one complaint. It forms part of a broader challenge involving two cases. Alongside The Digital Chamber and the Illinois Blockchain Association, the Blockchain Association and the Crypto Council for Innovation are participating in the coordinated effort. Together with the state, those parties have proposed a litigation schedule under which a Sangamon County court would rule by March 1, 2027.

That schedule is not final. It requires court approval before it binds anyone. If the judge accepts it, the roadmap looks like this:

• Enforcement of the Digital Asset Tax Act is suspended until July 1, 2027.
• A Sangamon County court would issue a ruling by March 1, 2027, under the parties' proposed timeline.
• The proposed deadline still needs the court's sign-off before it takes effect.

Why does federal backing matter?

When the Department of Justice weighs in on the side of private plaintiffs, it changes the leverage in the room. State attorneys general tend to settle or concede structural issues faster when the federal government flags a constitutional concern. The industry groups — The Digital Chamber, the Blockchain Association, the Crypto Council for Innovation and the Illinois Blockchain Industry Association — now have the combined posture of a coordinated private bar plus DOJ support.

What does this change for the average digital asset business in Illinois? In the near term, it removes the compliance burden of the tax itself. Firms do not need to collect or remit under the act while the suspension stands. Longer term, a ruling striking the tax down could shape how other states draft digital asset tax measures, since legislatures tend to copy each other's language and avoid provisions already under constitutional fire.

The timeline to watch

The next concrete milestone is procedural: Sangamon County's decision on whether to approve the March 1, 2027 ruling deadline. Until that approval lands, the schedule remains a proposal agreed between the parties rather than a court order. After that, the substantive ruling — and its reasoning on the constitutional question — will determine whether the Digital Asset Tax Act survives at all before the July 1, 2027 suspension expires.