South Korea's financial authorities are preparing to submit a government-backed Digital Asset Basic Act to the National Assembly as early as next week, featuring a landmark 20% cap on major shareholders' stakes in crypto exchanges regardless of market size. The move represents one of the most aggressive regulatory approaches to exchange ownership globally and could influence how other countries structure their own digital asset frameworks.

What Is South Korea's New Ownership Cap and Why Does It Matter?

The Financial Services Commission plans to introduce the bill in early September through legislation sponsored by Democratic Party lawmaker Yoo Dong-soo, chair of the National Assembly's Political Affairs Committee. The proposed 20% ceiling on major shareholders applies equally to all exchanges, regardless of their size or market share. This uniform approach differs from earlier proposals that would have set different limits for large versus small platforms.

The rationale behind the ownership cap is straightforward: authorities want to prevent any single shareholder from exercising unilateral control over an exchange's management. By capping stakes at 20%, the law would encourage traditional financial companies, including banks, to participate in exchange governance and diversify ownership structures. This approach reflects growing concerns about concentration risk in the crypto industry, where a handful of major shareholders can influence critical business decisions.

The market had previously floated a more lenient plan that would have limited major shareholders to 15% to 20% only at large exchanges with more than 50% market share, while exempting smaller platforms entirely. However, authorities rejected this tiered approach, concerned that applying different rules by market share could create confusion over when and how that share is calculated and leave room for regulatory avoidance.

How Will South Korea's Regulatory Timeline Unfold?

The ruling party does not plan to create a separate task force and aims to begin reviewing the bill as soon as it is introduced, with the goal of passing the legislation this year. Financial authorities are focusing first on securing passage of the basic law and may refine more detailed rules later through follow-up legislation or subordinate regulations. This phased approach allows lawmakers to establish the foundational framework quickly while leaving room for refinement based on parliamentary feedback.

One critical detail still under discussion is how the law will handle existing shareholders who currently exceed the 20% threshold. Transition rules and the period allowed for stake disposals are set to be detailed during National Assembly deliberations. The ceiling could potentially be eased to 25% to 30% during parliamentary review if lawmakers judge the 20% limit to be too strict, though authorities have not signaled support for such changes.

Steps to Understand South Korea's Regulatory Approach

• Ownership Concentration Risk: The 20% cap directly addresses the risk that a single major shareholder could dominate exchange decision-making, potentially compromising user protections or market integrity through concentrated control.
• Uniform Application Across Market Sizes: Unlike tiered systems, applying the same 20% limit to all exchanges eliminates ambiguity about when different rules apply and reduces opportunities for regulatory arbitrage between large and small platforms.
• Encouragement of Traditional Finance Participation: By limiting any single shareholder's stake, the law creates space for banks and other regulated financial institutions to take meaningful ownership positions without fear of being squeezed out by dominant players.
• Phased Implementation Strategy: The focus on passing a basic law first, followed by detailed subordinate regulations, allows South Korea to establish clear principles quickly while adapting specific rules based on real-world experience and parliamentary input.

South Korea's approach stands out in the global regulatory landscape. While the United States, Europe, and other jurisdictions have focused on licensing requirements, anti-money laundering (AML) compliance, and stablecoin regulation, few have directly addressed ownership concentration at exchanges. The Digital Asset Basic Act signals that South Korea views exchange governance structure as a critical component of digital asset regulation, not merely a secondary concern.

The bill also addresses broader digital asset regulation beyond ownership caps. It will set rules for stablecoin issuance and distribution and establish comprehensive regulations for virtual asset businesses more generally. This comprehensive approach reflects South Korea's ambition to create a complete regulatory framework rather than piecemeal rules addressing individual problems as they arise.

For the global crypto industry, South Korea's move could set a precedent. If the law passes this year as authorities hope, other countries may consider similar ownership restrictions as a best practice for exchange governance. The debate over whether 20% is the right threshold, or whether 25% to 30% would be more practical, will likely influence how other jurisdictions calibrate their own rules. The outcome of South Korea's parliamentary review process will provide valuable real-world data on whether such caps are enforceable and whether they achieve their intended goal of preventing concentrated control without stifling exchange operations.