SKN | Bank of Thailand Tightens Stablecoin Oversight in Crackdown on Illicit Financial Flows

Key Points

• The Bank of Thailand is expanding oversight of stablecoin transactions as part of a broader campaign against money laundering and the country’s growing “gray money” economy.

• Authorities will closely monitor high-volume USDt (USDT) transactions alongside large cash movements, foreign exchange activity and gold trading.

• Commercial banks will face stricter compliance requirements, including enhanced reporting for large cash deposits and suspicious financial activity.

• The initiative reflects Thailand’s effort to curb organized financial crime while maintaining oversight of its regulated digital asset sector.

Thailand’s central bank is intensifying its efforts to combat illicit finance by placing greater scrutiny on stablecoin transactions and large cash movements as part of a nationwide crackdown on the country’s shadow economy.

The Bank of Thailand is working with the Securities and Exchange Commission to review high-volume stablecoin transfers, particularly those involving USDt (USDT), while also expanding monitoring of cash transactions, foreign exchange activity and precious metals trading.

Governor Vitai Ratanakorn said the campaign represents a long-term strategy requiring multiple coordinated enforcement measures rather than temporary solutions.

Stablecoins Enter Regulatory Spotlight

Authorities believe stablecoins have increasingly become a preferred method for transferring large sums of money due to their speed, global accessibility and near-instant settlement.

The expanded monitoring will focus on identifying unusual transaction patterns that may indicate money laundering, organized crime or illicit cross-border financial activity.

Regulators are particularly concerned that digital assets could be used alongside traditional cash networks to move proceeds generated from criminal enterprises.

Gray Economy Remains a Major Concern

Thailand’s enforcement campaign targets what authorities describe as the country’s “gray economy”—financial activity that often operates outside formal oversight and may involve proceeds from scams, fraud or other suspicious activities.

Officials have linked a significant portion of these illicit financial flows to organized scam operations that have expanded across Southeast Asia in recent years.

According to government estimates, scam-related losses reached approximately 115 billion baht (US$3.4 billion) during 2025, while authorities recorded around 173 million scam calls and fraudulent text messages over the same period.

Banks Face Stronger Compliance Requirements

Under the expanded framework, commercial banks will assume additional compliance responsibilities across several financial sectors.

Institutions will be expected to monitor suspicious stablecoin activity, oversee large cash transactions, supervise foreign exchange operations and review gold bullion trading for potential financial crime indicators.

Large cash transactions will also face stricter reporting requirements.

Cash deposits exceeding 5 million baht (approximately US$150,000) will require full disclosure of the source of funds, while exchanges involving unusually large quantities of high-denomination banknotes may trigger additional scrutiny where no legitimate business purpose is evident.

Crypto Trading Remains Legal Under Tight Oversight

Although Thailand has frequently been viewed as one of Southeast Asia’s more active digital asset markets, the central bank continues to prohibit cryptocurrency and stablecoin payments for everyday commercial transactions.

At the same time, regulated cryptocurrency trading remains legal.

The country’s largest digital asset exchange, Bitkub, continues to process substantial trading activity, with the USDT/Thai baht pair remaining among its most actively traded markets.

Balancing Enforcement and Financial Innovation

Thailand has previously undertaken aggressive enforcement campaigns targeting suspicious bank accounts and money mule networks.

During 2025, authorities froze approximately three million bank accounts suspected of involvement in illicit financial activity.

However, the broad scope of those actions also affected numerous legitimate individuals and businesses, prompting criticism over unintended consequences and highlighting the challenge of combating financial crime without disrupting lawful economic activity.

Outlook

Thailand’s expanded surveillance of stablecoin transactions demonstrates how regulators are increasingly integrating digital assets into broader anti-money laundering frameworks rather than treating them separately from traditional finance. As stablecoins become more widely used for cross-border transfers, authorities are expected to continue strengthening oversight while seeking to balance financial innovation with efforts to combat organized crime and illicit financial flows.