South Korea Slaps Bithumb With $24.5M Fine and Six-Month Partial Suspension After 6.65M AML Violations

Regulators detail millions of compliance failures as crypto exchange faces operational limits and executive sanctions

TL;DR

• South Korean regulators fined Bithumb 36.8 billion won ($24.5 million) after identifying 6.65 million anti-money laundering violations during inspections conducted between 2024 and 2025.
• Authorities imposed a six-month partial suspension from March 27, 2026, to September 26, 2026, restricting external crypto transfers for newly registered users while allowing existing customers to trade normally.
• Investigators also found 45,772 transactions linked to 18 unregistered overseas crypto platforms, while disciplinary measures were issued against senior executives and compliance officers.

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South Korean financial regulators have fined cryptocurrency exchange Bithumb 36.8 billion won, roughly $24.5 million, after uncovering millions of anti-money laundering violations during a sweeping compliance probe. Authorities said the penalty, announced March 16, 2026, represents the largest enforcement action ever imposed on a digital asset trading platform in the country. The sanction was issued by the Financial Intelligence Unit under the Financial Services Commission after investigators determined that Bithumb repeatedly violated provisions of the Act on Reporting and Use of Specific Financial Transaction Information, which governs anti-money laundering and reporting obligations for crypto exchanges operating in South Korea.

Regulators said the investigation uncovered about 6.65 million individual compliance violations tied to failures in identity verification procedures and transaction monitoring systems. Officials identified roughly 3.55 million cases in which the exchange failed to properly verify customer identities under required Know-Your-Customer standards. Authorities also recorded about 3.04 million instances in which transactions that should have been restricted or flagged under anti-money laundering rules were allowed to proceed through the platform. Investigators described the violations as systemic breakdowns within the exchange’s internal compliance infrastructure.

The probe also documented 45,772 cryptocurrency transfers connected to 18 unregistered overseas virtual asset service providers, a practice prohibited under South Korean regulations designed to block cross-border flows linked to illicit finance. Authorities said transactions involving foreign platforms that lack local registration can expose exchanges to money-laundering risks and sanctions violations under the country’s financial reporting laws. Compliance failures surfaced during inspections conducted between 2024 and 2025 as regulators examined operational controls across South Korea’s largest digital asset trading platforms, including Upbit, Bithumb, Coinone, Korbit, and Gopax.

Alongside the financial penalty, authorities ordered a six-month partial business suspension targeting specific operational activities at Bithumb. The restriction is scheduled to take effect from March 27, 2026, and will remain in place until September 26, 2026. During the suspension period, newly registered customers will be barred from transferring cryptocurrency assets externally, while existing users will continue to trade and withdraw digital assets without interruption. Newly onboarded clients will still be allowed to deposit and withdraw Korean won but will be unable to move cryptocurrency to external wallets or platforms.

Regulators structured the sanction to avoid a sudden shutdown of the exchange’s trading operations while limiting the inflow of new crypto assets onto the platform. Authorities said the measure restricts onboarding activity and external transfers for new accounts while allowing the exchange to maintain services for its current user base. Officials stated that the penalty reflected “the scale of the violations, the extent of legal responsibility, and the operational impact on financial compliance requirements,” according to enforcement documents describing the disciplinary decision.

Senior executives also faced disciplinary measures tied to the compliance failures uncovered during the investigation. Bithumb’s chief executive received an official reprimand, a sanction regulators described as a serious disciplinary action that could affect future eligibility for executive appointments in the financial sector. The exchange’s designated compliance reporting officer was suspended from duty for six months as part of the enforcement measures tied to the anti-money laundering violations.

Trading activity on Bithumb remains substantial despite the enforcement action. Reports cited estimates placing the exchange’s 24-hour trading volume at about $505 million during the period referenced in regulatory coverage. Another dataset referenced in reporting placed daily trading volume at roughly $724 million, reflecting continued activity on the platform’s markets. Most of the exchange’s transactions occur in Korean won-denominated trading pairs, which account for more than 92% of overall trading activity on the platform.

Market data cited in the reports identified XRP paired against the Korean won as the exchange’s most actively traded market, representing 14.68% of total volume. The BTC/KRW pair accounted for 11.15% of trading activity, followed by ETH/KRW at 10.83% and USDT/KRW at 10.44%. Additional digital asset markets, including SOL/KRW, G/KRW, and DOGE/KRW, contributed smaller shares of the platform’s overall trading flow during the period covered in the enforcement reports.

Authorities indicated the operational limits could affect the flow of new liquidity into the exchange during the suspension period because new customers will be unable to move external cryptocurrency assets onto or off the platform. Domestic competitors have already seen shifts in trading share, with one rival exchange expanding its market share to more than 10% and briefly exceeding 20% during periods of changing trading activity cited in the coverage.

Regulators said a sanctions review committee scheduled to meet later in March 2026 will finalize the enforcement decision, leaving open the possibility that penalties could be adjusted following the review process. Officials also retain authority to raise the fine to as much as 50 billion won or impose additional restrictions depending on the outcome of the regulatory review.

This article has been refined and enhanced by ChatGPT.