Thailand will review large USDT transactions and require proof of funds for cash deposits above THB 5 million to fight money laundering.
Thailand is introducing stricter financial rules to stop money laundering. The Bank of Thailand (BOT) and the Securities and Exchange Commission (SEC) are looking into big USDT transactions. They are also working on new regulations for high-dollar cash deposits. These are measures to increase financial transparency on a national level.
Thailand Increases Checks on Large USDT Transactions
The Nation reports that the Bank of Thailand will require proof of funds for cash deposits of THB 5 million ($150,000) or more. The depositors of such funds are required to provide a statement of the source of the funds. The rule is expected to take effect in the fourth quarter of 2026.
Thailand’s Central Bank and SEC Probe High-Value USDT Transactions
According to The Nation, the Bank of Thailand will require individuals depositing THB 5 million ($150,000) or more in cash to verify the source of funds. It is also working with Thailand’s SEC to review large… pic.twitter.com/ysl2dEv4jk
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Meanwhile, the Bank of Thailand is collaborating with the SEC to study large transactions involving stablecoins. They primarily focus on USDT as it is the world’s largest stablecoin. Authorities are seeking to uncover deals that could be concealing the true owner.
Related reading: Thai Baht Stablecoin Rules Near Final Approval.
Authorities are also worried about payments that do not go through the official remittance system in Thailand. Some may choose to use stablecoins rather than the traditional financial system. So regulators are looking to enhance monitoring without impacting legal users.
The new measures were announced during the 2026 Advanced Economic Journalist Capacity Development Project by BOT Governor Vitai Ratanakorn. The campaign is a long-term plan, he said. He also said that multiple measures will be implemented to curb illegal financial activity.
The Bank of Thailand is seeking to cut the nation’s “grey economy,” the governor said. This encompasses financial activities that are not subject to the normal rules. As a result, banks will be given greater responsibility for suspicious transaction monitoring.
New Cash Deposit Rules Expand Earlier Banking Measures
The new deposit rules are part of banking changes earlier this year, in April 2026. The same rules are in effect for cash withdrawals of THB 5 million or more. Customers will have to provide a reason for not using electronic transfers or cheques.
The Bank of Thailand said that the previous regulations had yielded positive outcomes. The number of high-value cash withdrawals has dropped by 35% since the restrictions began. The rules were thought to have contributed to the decrease in the amount of cash that was moved around suspiciously throughout the country.
Now, the central bank wants such checks on big cash deposits. People depositing THB 5 million or more must provide documents showing the source of their funds. This will mean that banks will require additional information before accepting large deposits.
The Bank of Thailand is also researching the exchange of large bank notes. Authorities are monitoring those who are converting THB 1,000 notes into THB 100 or THB 500 notes. They want to know if these exchanges are for a good reason.
In addition, banks will be more vigilant in monitoring large cash deposits, currency conversion, and bullion trading. They will also be more vigilant against suspicious activity with stablecoins. The measures are intended to enhance compliance in the financial sector.
The new plan in Thailand is a mix of tougher banking regulations and digital asset oversight. The Bank of Thailand and the SEC wish to increase transparency in financial transactions. Meanwhile, they want to prevent money laundering and promote a more secure financial system for businesses and consumers.
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