USDC Overtakes USDT in Transaction Volumes as Stablecoin Regulation Debate Intensifies

The global stablecoin market is entering a new phase as Circle’s USDC has surpassed Tether’s USDT in transaction volume for the first time since 2019, signaling a shift in how digital dollars are used across the crypto economy.

The development comes as regulators – particularly in the United Kingdom – continue to refine their approach to stablecoin oversight, highlighting the growing importance of these assets in global finance.

USDC Surpasses USDT in Transaction Activity

While Tether’s USDT remains the largest stablecoin by market capitalization, USDC is rapidly gaining ground in actual transaction activity.

Mizuho analysts Dan Dolev and Alexander Jenkins estimate that USDC has processed approximately $2.2 trillion in adjusted transaction volume so far in 2026, compared with roughly $1.3 trillion for USDT. That gives USDC an estimated 64% share of adjusted stablecoin transaction volumes, a significant reversal from the period between 2019 and 2025, when Tether consistently dominated activity.

During those years, USDC typically accounted for around 30% of stablecoin transaction share.

The shift suggests that the competitive landscape between the two largest stablecoins is beginning to evolve as new applications and institutional use cases emerge.

Stablecoins – digital tokens typically backed by reserves such as fiat currency or gold — have become essential infrastructure for the crypto ecosystem. They function as payment rails, trading settlement assets, and cross-border transfer mechanisms, allowing users to move funds quickly without relying on traditional banking systems.

The market remains heavily concentrated among the two leading players. Tether’s USDT currently holds a market capitalization of roughly $143 billion, while USDC stands at approximately $78 billion.

New Use Cases Driving Stablecoin Adoption

Analysts attribute the rise in USDC activity to a growing number of real-world applications beyond traditional crypto trading.
Mizuho’s report highlights several emerging use cases that are helping drive stablecoin demand, including prediction markets such as Polymarket and the rise of agentic commerce, where autonomous software agents transact digitally on behalf of users.

These developments suggest that stablecoins are increasingly being used as programmable financial infrastructure rather than simply liquidity tools for cryptocurrency exchanges.

The analysts emphasized that long-term leadership in the stablecoin sector will likely depend on real economic usage rather than market capitalization alone.

That perspective reflects a broader industry shift as stablecoins transition from a niche crypto tool to a foundational component of digital finance.

Circle Raises Long-Term Growth Outlook

Reflecting the acceleration in USDC adoption, Mizuho analysts raised several long-term forecasts for Circle.

The firm now expects “meaningful wallets” using USDC to reach 11.7 million by 2027, up from a previous estimate of 10 million. The revised projections also lift expected USDC market capitalization to approximately $139 billion, compared with an earlier estimate of $123 billion.

These projections highlight growing confidence that stablecoins will continue expanding into payments, financial services, and digital commerce.

Industry forecasts support that view. Analysts at Standard Chartered expect the total stablecoin market to reach $2 trillion in market capitalization by the end of 2028, potentially making stablecoins one of the largest sectors within the broader digital asset industry.

However, as adoption accelerates, regulators are increasingly examining how stablecoins should be governed within the traditional financial system.

Regulators Grapple With Stablecoin Frameworks

The rapid growth of stablecoins has sparked intense debate among policymakers about the appropriate regulatory framework for these assets.

In the United Kingdom, the Bank of England (BOE) has been developing a regulatory approach aimed at integrating stablecoins into the financial system while mitigating potential risks to banking stability.

The central bank launched a consultation on stablecoin regulation in November 2025, outlining proposals for reserve backing requirements and usage limits.

Some of these proposals generated strong reactions from the crypto industry, with several companies arguing that overly restrictive rules could slow innovation in digital finance.

Among the most controversial measures were proposed holding limits on stablecoins, including a cap of £20,000 for individuals and £10 million for businesses accepting stablecoins as payment.

Bank of England Signals Greater Flexibility

Despite the initial criticism, the Bank of England appears increasingly open to revisiting its approach.

Speaking before the House of Lords Financial Services Regulation Committee, BOE Deputy Governor Sarah Breeden said the central bank is willing to reconsider the proposed holding limits if alternative solutions can effectively address financial stability concerns.

Breeden explained that the caps were originally designed to prevent a sudden migration of deposits away from commercial banks into stablecoins, which could potentially destabilize the traditional banking system.

“We proposed holding limits as a way of managing that risk. We are open to feedback on other ways of achieving it,” she said.

However, Breeden also noted that the central bank has been disappointed by the lack of concrete proposals from industry participants.

“The pressure from the industry to do it in a different way is very real,” she said. “But we have not yet seen constructive engagement on alternative solutions.”

Industry Calls for Collaborative Regulation

Industry representatives dispute the suggestion that they have not engaged with regulators.

Tom Rhodes, chief legal officer at UK-based stablecoin issuer Agant, said the industry has spent the past two years actively participating in regulatory consultations.

According to Rhodes, companies and trade associations have reviewed thousands of pages of consultation materials, attended numerous roundtables, and submitted extensive feedback to both the Bank of England and the Financial Conduct Authority (FCA).

He argues that the central challenge lies in the fact that regulators are attempting to design a comprehensive framework for a market that is still rapidly evolving.

“It’s not possible to provide concrete data in these circumstances,” Rhodes said, suggesting that a lighter, principles-based regulatory regime would be more appropriate while the sector is still developing.

Stablecoins at a Critical Turning Point

The convergence of rising adoption and intensifying regulatory scrutiny suggests that stablecoins are approaching a critical stage in their development.

On one hand, transaction volumes such as USDC’s recent surge indicate that digital dollars are becoming increasingly embedded in the global financial system.

On the other, regulators remain cautious about the systemic risks posed by large-scale adoption.

How policymakers and industry leaders navigate this balance may ultimately determine the long-term structure of the stablecoin market.

For now, the competition between USDC and USDT – once defined largely by market capitalization – is increasingly being shaped by real-world usage, institutional adoption, and regulatory frameworks that will define the next era of digital finance.

The information provided in this article is for educational purposes only and does not constitute financial, investment, or trading advice. Coindoo.com does not endorse or recommend any specific investment strategy or cryptocurrency. Always conduct your own research and consult with a licensed financial advisor before making any investment decisions.

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