Circle Stock Plunges 20% as Lawmakers Eye Stablecoin Yields, Tether Ups Audit Game

Lawmakers Target Stablecoin Yields—But How?

Circle’s stock (CRCL) suffered its worst trading day since going public, tumbling just over 20% to close at $101.24 on Tuesday. The sharp decline came as investors digested a draft of the so-called Clarity Act, which introduces sweeping language that could ban stablecoin yield offerings “directly or indirectly”—including any rewards “economically or functionally equivalent to interest.” The bill’s current version would force the SEC, CFTC, and Treasury to jointly define what stablecoin rewards are allowed within one year, leaving issuers and distributors in limbo.

On paper, the Clarity Act is still a draft and subject to revision by lawmakers. But the immediate market response was decisive: major crypto equities tied to stablecoins slid in tandem with Circle’s drop.

Coinbase Feels Pain Alongside Circle

The impact extended beyond Circle. Coinbase, which shares revenue from USDC reserves with Circle, saw its own stock fall nearly 10% on the same day, ending at $181.04. This mirrored investor worries that stablecoin yield bans could erode a key source of income for both companies. As of now, Coinbase offers 3.5% rewards for USDC balances on its premium Coinbase One platform—down from the 4.5% previously available before December for free users.

Kraken and Binance currently pay up to 5% and 5.63% respectively on USDC balances held in their wallets.

Despite these ongoing reward programs at rival exchanges, the future of such yields remains uncertain as U.S. lawmakers debate how far restrictions should reach.

Big Four Audit Puts Pressure on Circle

While Circle faced headwinds from Washington, Tether—the world’s largest stablecoin issuer—announced it had secured an agreement with a Big Four accounting firm for its first full independnet audit of USDT reserves. Tether claims $192 billion in assets backing USDT, most of which are held in U.S. Treasuries. Until now, Tether has relied on attestations from Italian firm BDO rather than a comprehensive audit since 2014.

The move comes as Tether signals compliance with last summer’s GENIUS Act, which requires foreign stablecoin issuers operating in the U.S. to undergo rigorous reserve audits. The name of the auditing firm has not been disclosed yet—a detail that leaves some questions unanswered about transparency but marks a notable shift in posture for Tether.

Uncertainty Clouds USDC Rewards for Holders

For everyday users holding USDC—the dollar-pegged stablecoin issued by Circle—the future of earning passive rewards is now up in the air. Although Coinbase still pays out 3.5% for premium clients and Kraken and Binance offer even higher rates, it’s unclear if these programs will survive if the Clarity Act’s language becomes law. The draft bill’s mandate for regulators to define “interest” leaves open whether staking-like structures or other reward mechanisms might also be swept up in new restrictions.

Bernstein analysts have argued that investors may be overreacting: according to theblock.co, their view is that the Clarity Act targets distributors (such as exchanges), not issuers like Circle itself.

Still, until definitions are finalized—and with some wallets already reportedly frozen—uncertainty prevails across both institutional and retail stablecoin holders.

Why It Matters: Practical Impact Beyond Price Drops

Tuesday’s market moves were stark: Circle lost more than a fifth of its value in a single session; Coinbase shares fell by nearly 10%. Yet beneath those numbers are broader questions about how U.S. regulation will shape who can access yield on digital dollars—and under what terms. The SEC and CFTC have been tasked with developing frameworks not just for crypto but also for related areas like AI and prediction markets, signaling that regulatory scrutiny is only intensifying.

For now, competing platforms continue offering attractive yields on USDC balances—sometimes above 5%. But with legislation evolving and enforcement looming, both companies and users must brace for further disruption ahead.

Key indicators to follow

If the Clarity Act’s final language, still under revision by lawmakers, explicitly bans stablecoin yield “directly or indirectly,” including rewards “economically or functionally equivalent to interest,” then platforms like Coinbase and Kraken may need to halt or alter their current USDC rewards programs immediately.