What States Can Still Do to Crypto After GENIUS and CLARITY

Illinois has become the first state to tax cryptocurrency by transaction. The new 0.2% levy applies to nearly every trade, transfer, or custody service an exchange provides to an Illinois resident, taking effect on January 1, 2027. Governor JB Pritzker signed the Digital Asset Tax Act in mid-June, embedding it within a $55.9 billion budget.

Washington is currently building a single national regulatory framework for cryptocurrency. The GENIUS Act, which governs stablecoins, is already law, and the CLARITY Act, which addresses market structure, is slowly approaching a Senate floor vote. Both pieces of legislation promise a unified set of rules for issuers, exchanges, brokers, and tokens, applied consistently across every state.

However, Illinois serves as the first concrete proof that a federal rulebook and a federal price tag are entirely distinct concepts. Nothing currently taking shape in Washington clearly prevents a cash-strapped state from taxing the use of cryptocurrency within its borders.

The upcoming conflict is narrower than the debates of the past two years. Congress is poised to resolve what cryptocurrency is and who regulates it. What it will not resolve is what states can charge in addition, and Illinois has demonstrated that this additional cost can be substantial. Federal registration becomes less appealing if a token is legal in all fifty states but significantly more expensive to use in a dozen of them.

What Washington Actually Settles, and Where Its Power Ends

The federal rulebook addresses issues the industry has debated for years. The GENIUS Act, signed into law in 2025, established the framework for payment stablecoins. It assigned oversight responsibilities to the Treasury Department, the Office of the Comptroller of the Currency (OCC), and banking regulators regarding who can issue coins and the reserves they must hold. Treasury’s first proposed rule under GENIUS allows states to continue supervising their own smaller stablecoin issuers, provided the state’s regulatory regime is “substantially similar” to the federal standard.

The regulatory leash tightens as issuers grow. Any state-qualified issuer that exceeds $10 billion in outstanding stablecoins must shift toward federal oversight or cease minting new coins until its supply falls back below that threshold. The CLARITY Act addresses broader market-structure questions. The Senate Banking Committee advanced the bill with a 15-9 vote in May, and it is now on the Senate calendar awaiting a floor vote. The act delineates the boundary between securities regulated by the SEC and digital commodities regulated by the CFTC, while also setting the terms under which exchanges and brokers must register.

The extent of federal authority over states is more limited than the term “clarity” might suggest. Washington can override a state rule, but only in specific circumstances. This occurs when Congress explicitly states so in plain language, when a state law directly conflicts with federal law, or when the federal regulatory scheme is so comprehensive that no room remains for state regulation.

The scope of this override is critical, and it is where the Illinois issue slips through. The House version of the CLARITY Act includes strong preemption language that would prevent states from regulating digital commodities, including classifying them as securities under state law. This is a key feature of the act, as it prevents fifty different definitions of the same token.

However, state officials have already pushed back against this provision. State securities administrators warn that the language weakens their ability to pursue fraud, while state banking supervisors are fighting to retain their authority over money transmission and consumer protection.

A tax on business activity, such as the one implemented in Illinois, falls well outside this regulatory dispute. Preventing a state from relabeling Bitcoin as a security is a wholly different matter from preventing it from taxing the companies that facilitate Bitcoin transactions for its residents.

Why a Crypto Tax Wall Outlives the Rulebook

Illinois demonstrates how a state can increase the cost of cryptocurrency while leaving the asset itself perfectly legal.

The Digital Asset Tax Act targets the business of providing digital-asset services. This means exchanges, custodians, and brokers handling cryptocurrency for Illinois customers are taxed at 0.2% of the value in each covered transaction. Direct wallet-to-wallet transfers between individuals remain exempt. The charge applies to the gross value, meaning users owe the tax on the full amount even if the trade results in a loss.

Any out-of-state broker clearing more than $100,000 annually from Illinois residents falls under this jurisdiction. Brokers register with the state and collect the tax similarly to a sales tax, so the cost is passed directly to users through higher fees and wider spreads. Companies operating on thin margins and high volumes will feel the impact first, while market makers and arbitrage desks are most likely to widen spreads or geofence the state entirely.

The state’s legal argument is straightforward, making it harder to preempt than a securities rule. Illinois is taxing commercial activity that involves its residents and directing the revenue into its budget.

The state is exercising the same power it uses for many other industries, allowing it to credibly claim it has taken no position on what cryptocurrency is or who is authorized to issue it. Industry estimates suggest the levy generates approximately $60 million annually. The Crypto Council for Innovation has described it as the most punitive digital-asset tax in the country, as there is no comparable state charge on trades of stocks, bonds, or derivatives.

This selective targeting is a legal vulnerability worth monitoring. It will likely result in a slow, uncertain court battle, but the tax will remain in effect while the dispute plays out.

The industry is concerned about this because of the precedent it sets.

A federal rulebook loses much of its appeal if every budget-stressed state can add its own cost layer on top. A single national framework could devolve into fifty separate toll booths, and a 0.2% charge compounds rapidly across the high-frequency transfers that are a defining characteristic of cryptocurrency trading.

To eliminate this tax, Congress would need to address it directly, either through a separate act or an amendment to existing legislation. Lawmakers would need to expressly prohibit states from taxing digital-asset transactions or prevent them from treating cryptocurrency less favorably than comparable financial products.

Both the GENIUS Act and the current drafts of the CLARITY Act omit this language, leaving states with room to act. State bank supervisors have even asked lawmakers to confirm that more protective state limits survive the federal bill. This indicates that those who manage state regimes fully expect to maintain their regulatory lane regardless of what passes in Congress.

Thus, the industry is close to achieving its most heavily lobbied goal: a federal answer to what cryptocurrency is and who watches it. Illinois serves as a reminder that this answer settles only half the issue. GENIUS and CLARITY can make a token legal, supervised, and identically defined across the United States. A state can still decide that every time a resident interacts with that token, a 0.2% fee is owed. Washington is close to providing crypto with one rulebook, but it has not yet provided it with one price.

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