Crypto Market Structure Bill: What Investors Need to Know

The crypto market structure bill is the US legislation meant to decide which federal regulator oversees which crypto assets, and how exchanges, brokers and token issuers must operate. Its current official name is the Digital Asset Market Clarity Act of 2025 (H.R. 3633), usually called the CLARITY Act. It passed the House in July 2025, cleared the Senate Banking Committee in May 2026, then stalled on September 15, 2026, when a procedural vote to begin Senate debate failed 49-50. It is not law. This guide explains what the bill would do, how it differs from the earlier FIT21 bill, why it stalled, and what actually affects your crypto holdings in the meantime.

This guide is part of our Bitcoin hub, which maps every related guide in one place.

Key takeaways:

• “Market structure bill” is shorthand; the live bill is the CLARITY Act (H.R. 3633). FIT21, its 2024 predecessor, passed the House but never received a Senate vote.
• The core idea: most tokens traded on secondary markets become “digital commodities” overseen by the CFTC, while fundraising through investment contracts stays with the SEC.
• The Senate cloture motion failed 49-50 on September 15, 2026, mainly over ethics rules for officials’ crypto dealings and stablecoin yield.
• Passage before the new Congress in January 2027 is widely considered unlikely; a new bill would likely need to be reintroduced.
• Regulators are moving anyway: the SEC proposed “Regulation Crypto Assets” in August 2026.

What Is the Crypto Market Structure Bill?

US securities and commodities laws were written long before blockchains. For years, the SEC argued many tokens were securities, while the CFTC treated Bitcoin and some others as commodities, leaving exchanges and projects unsure which rules applied. A market structure bill tries to fix this by writing crypto-specific definitions and registration regimes into law. It works alongside the stablecoin law, the GENIUS Act, which was signed on July 18, 2025 and set federal rules for payment stablecoin issuers. Our stablecoin guide covers that piece.

If you’ve seen the phrase “official name” in searches, here’s the lineage:

Our older version of this page described FIT21 as the market structure bill. That was accurate in 2024 but is outdated: CLARITY replaced it, building on FIT21’s framework. For a deeper dive on the bill’s classification rules, see our CLARITY Act explainer.

Key Provisions

Splitting the SEC and CFTC

The bill treats the investment contract (the fundraising arrangement between a project and its buyers) as the security, not the token itself. Tokens whose value comes from the use of a sufficiently decentralized or “mature” blockchain would be classified as digital commodities, with spot trading supervised by the CFTC. Fundraising and issuer disclosures would stay under the SEC, with a path for projects to certify that their network has matured and step out of the securities regime.

Registration for exchanges, brokers and dealers

Crypto trading platforms would register with the CFTC as digital commodity exchanges, brokers or dealers (and with the SEC where they handle securities). Registered firms would face requirements on capital, segregation of customer assets, conflicts of interest, market surveillance and disclosures, aimed squarely at the failures exposed by FTX.

Customer protection and custody

Customer funds would have to be held separately from company funds, with rules on qualified custody and on how assets are treated in bankruptcy. These are the provisions most directly relevant to retail investors who keep crypto on exchanges.

DeFi and software developers

The House text carved out certain activities, such as running validators, publishing software and providing user interfaces, from registration requirements, while keeping anti-fraud and anti-manipulation authority. How far those carve-outs should go, especially given illicit-finance concerns, was one of the hardest issues in Senate talks.

The Senate’s additions

The Senate Banking version added ethics restrictions on federal officials who issue or sponsor digital assets, with enforcement assigned to the Department of Justice and a sunset in January 2029. Critics argued the rules left out income from existing ventures, licensing deals and memecoins, and that DOJ-only enforcement lacked independence. Democrats also sought stronger consumer protection, illicit-finance controls and state enforcement powers; 18 state attorneys general opposed preemption language.

How FIT21 Differs from the CLARITY Act

CLARITY kept FIT21’s basic architecture (CFTC for digital commodities, SEC for investment contracts, a decentralization test) but refined it after a year of negotiation. Changes included more detailed tests for when a blockchain counts as mature, treatment of stablecoins aligned with the GENIUS Act, revised exemptions for token fundraising and more developed DeFi language. Vote counts tell the political story: FIT21 passed the House 279-136; CLARITY passed with a larger 294-134 margin, including dozens of Democrats. The Senate, where 60 votes are needed to move most bills, is where both stalled.

Legislative Progress: Why the Bill Stalled

1. July 2025: House passes CLARITY.
2. Late 2025 to spring 2026: Senate Banking Republicans negotiate with Democrats; stablecoin yield (whether exchanges can pay rewards on stablecoins) and ethics provisions become sticking points.
3. May 2026: Senate Banking advances the bill 15-9, with all Republicans and two Democrats in favor.
4. September 15, 2026: the motion to proceed fails 49-50. No Democrats vote yes, and Republicans Susan Collins, Josh Hawley, Jerry Moran and Thom Tillis vote no. Tillis’s no vote lets him file a motion to reconsider, keeping a narrow procedural path open.
5. Next: the November 3, 2026 midterm elections, a lame-duck session, then the 120th Congress in January 2027, when unpassed bills generally must be reintroduced.

Because the vote was on whether to begin debate, senators never voted on the bill’s substance. Prediction markets priced passage in this Congress at under 10% after the vote. Watch for: a reconsideration motion, a narrower standalone bill, or a reintroduced version in 2027 shaped by the new Senate’s makeup. Our crypto regulation by country page tracks how the US compares with other jurisdictions.

What Regulators Are Doing Without Congress

• March 2026: the SEC issued interpretive guidance (coordinated with the CFTC) on when crypto assets are and aren’t subject to securities law.
• August 18, 2026: the SEC proposed Regulation Crypto Assets, including a startup offering exemption of up to $5 million over four years, a larger fundraising exemption of up to $75 million per year in tiers, and a safe harbor for when a token stops being tied to an investment contract. The comment period ran into October 2026.
• CFTC: reports indicate the CFTC has advanced its own crypto market structure rule. Agency rules can be changed more easily than laws, which is why the industry still wants legislation.

Impact on Different Market Participants

Retail investors: nothing changes overnight. Your existing tax obligations, exchange accounts and wallet use are unaffected by the stalled bill. If passed in the future, the biggest practical gains would be clearer customer-asset protection and more tokens available on US-regulated platforms.

Stablecoins are handled by a separate law, and our GENIUS Act explainer covers its reserve, licensing and reporting rules and the rulemaking timeline to January 2027.

Exchanges and brokers: without the law, they rely on agency guidance that a future administration could reverse. That keeps some products offshore or limited.

Token projects: the SEC’s proposed exemptions may offer a path even without Congress, but a statute would provide durability.

DeFi users: DeFi’s legal status remains defined mostly by guidance and court cases. Our CEX vs DEX guide explains the practical differences you face today.

What Investors Should Actually Do Now

• Don’t trade on headlines alone. Bill news tends to cause short-lived price moves, and procedural votes can be misread as final outcomes.
• Check custody. Until segregation rules are law, read your exchange’s terms on how customer assets are held and whether they’re lent out.
• Understand stablecoin yield. The GENIUS Act bars issuers from paying interest; whether platforms can pay “rewards” was a central fight. Expect those programs to change.
• Keep tax records. Market structure law doesn’t change crypto taxes; see our crypto tax guide.
• Compare abroad. The EU’s MiCA regime is already in force; see our EU crypto regulation guide.

FAQ

What is the official name of the crypto market structure bill?

The current bill is the Digital Asset Market Clarity Act of 2025, H.R. 3633, known as the CLARITY Act. Its predecessor was the Financial Innovation and Technology for the 21st Century Act (FIT21), H.R. 4763, which passed the House in May 2024 but never received a Senate vote. The separate stablecoin law is the GENIUS Act.

Did the CLARITY Act pass the Senate?

No. On September 15, 2026, the Senate voted 49-50 on cloture for the motion to proceed, short of the 60 votes needed to start debate. Disputes over ethics rules for officials’ crypto dealings and stablecoin yield were the main obstacles. A motion to reconsider keeps a narrow path open, but most analysts expect any law to wait for the next Congress.

When will the crypto market structure bill become law?

Nobody can say. After the failed September 2026 vote, passage before the 120th Congress convenes in January 2027 looks unlikely. A new version would generally need to be reintroduced and pass both chambers again. Meanwhile, SEC and CFTC rulemaking is filling some of the gap.

Will the market structure bill affect crypto prices?

Possibly, but not predictably. Clear rules could reduce legal risk and bring more institutional participation, while strict provisions could burden some tokens or platforms. Markets often price in expected outcomes before votes happen. Treat legislative news as one factor among many, not a trading signal.

Crypto is volatile and risky; this is education, not financial advice. Do your own research.