MV Capital - Thailand Cracks Down on High-Value USDT Trades in Grey Capital Fight

Thailand’s central bank and securities regulator are stepping up checks on large cash movements and stablecoin transactions to curb hidden capital flows, with new rules targeting deposits over 5 million baht and closer review of USDT activity

New Rules Target Large Cash Deposits

The Bank of Thailand plans to require source-of-funds documentation for cash deposits of 5 million baht or more, equivalent to about $150,000. The measures are scheduled to take effect in the fourth quarter of 2026. This step closes a gap after earlier rules on large withdrawals produced results.

Since April, customers making cash withdrawals above the same threshold have needed to provide a verified business reason and explain why electronic transfers were not used. Those requirements led to a 35 percent drop in high-value cash withdrawals. Governor Vitai Ratanakorn described the overall approach as involving multiple parallel strategies rather than temporary actions.

Key regulatory actions include:Source verification for cash deposits exceeding 5 million baht
Enhanced due diligence on large cash withdrawals
Joint review of high-volume USDT transactions by the Bank of Thailand and SEC

Focus on USDT and Digital Asset Flows

Authorities are directing attention to large USDT trades through coordination between the Bank of Thailand and the Securities and Exchange Commission. Officials have identified transaction patterns that could hide beneficial ownership or allow funds to move outside standard remittance systems.

The review centers on tracing control of funds in unusually high-volume activity. USDT remains available for use on licensed digital asset exchanges as an approved base trading pair following its addition to the permitted list in March 2025 alongside USDC. The current efforts do not change that status but apply additional scrutiny to specific large flows.

“The measures we are implementing are not short-term fixes.”Bank of Thailand Governor

Governor Ratanakorn previously noted that around 40 percent of USDT sellers on local platforms are foreign nationals, raising questions about compliance with local rules. The joint examination seeks to address potential gaps in anti-money laundering efforts as digital asset activity grows.

Broader Oversight Measures

The initiatives form part of wider steps to address activities outside regular financial channels. Regulators are also examining gold trading, banknote exchanges, and other areas. Banks now report suspicious patterns in precious metals, with physical gold withdrawals dropping sharply after increased monitoring.

The Securities and Exchange Commission has consulted on Travel Rule requirements for licensed platforms. These would mandate collection and sharing of sender and recipient details for crypto transactions to support international standards. Work continues in coordination with the Bank of Thailand and the Anti-Money Laundering Office to improve transaction monitoring and fund tracing.

Transaction Type	Threshold	Requirement
Cash Deposits	5 million baht	Source of funds documentation
Cash Withdrawals	5 million baht	Business justification and preference for electronic means
High-Value USDT Trades	Unusually large volumes	Beneficial ownership review

Context Within Thailand’s Digital Asset Approach

Thailand maintains licensed trading platforms and has tested controlled integration of digital assets in areas such as tourism payments through programs like TouristDigiPay. At the same time, direct crypto use in many domestic payments stays restricted. The current actions aim to strengthen oversight while preserving regulated activity.

Officials continue to develop frameworks for areas including exchange-traded products as part of ongoing policy development. The combination of cash controls and digital asset monitoring forms a coordinated response to changes in how funds move across borders and platforms.