The Financial Intelligence Unit (FIU), a crime monitoring and prevention body under South Korea’s Financial Services Commission, fined cryptocurrency exchange Bithumb 36 billion won (about $24.5 million) for anti-money laundering (AML) violations.

 

The fine follows an on-site inspection of the exchange conducted by the regulator in March and April last year, which found that Bithumb had violated the Specific Financial Information Act 6.65 million times. The act requires exchanges to restrict transactions with unregistered virtual asset service providers, block suspicious transactions, and verify their customers.

 

Bithumb was also found to have violated the Act on Reporting and Use of Financial Information by facilitating 45,772 cryptocurrency transactions with 18 unregistered overseas virtual asset service providers and cryptocurrency firms. Despite repeated warnings from the regulator, Bithumb failed to take corrective action.

 

"We have continuously requested Bithumb to stop trading with undeclared overseas virtual asset service providers, but it failed to fulfill its legal compliance obligations and demonstrated a markedly insufficient willingness to comply with the law, such as failing to implement effective blocking measures over an extended period," the FIU explained. 

 

In addition to the $24 million fine imposed by the regulator, Bithumb has been ordered to halt all external crypto transfers for new customers from March 27 to Sept. 26. The ban, however, does not affect existing customers trading on the exchange.

 

Despite facing the largest fine ever imposed on a South Korean exchange, Bithumb said it would address the issues highlighted. "We will resolve the issues identified in this inspection and do our best to create a safe trading environment and protect users," the company said.

 

 

South Korea Cracks Down on Compliance Violators

South Korea has been cracking down on compliance violators, particularly cryptocurrency exchanges that breach Anti-Money Laundering (AML) and Know Your Customer (KYC) regulations. In November 2025, the country fined its largest cryptocurrency exchange, Upbit, 35.2 billion won (approximately $25 million) and imposed a three-month partial suspension after the exchange failed to comply with AML and KYC rules.

 

On December 31, 2025, the FIU fined Korbit 2.73 billion won ($1.9 million) and issued a stern institutional warning to the exchange’s executives following a compliance audit that revealed weaknesses in its anti-money laundering (AML) and know-your-customer (KYC) procedures.

 

The FIU is currently conducting an on-site review of Coinone, which is expected to conclude later this year. Although there are unconfirmed reports that the agency has already flagged violations, no official report or penalties have been issued.