Thailand starts scanning stablecoin trades — why regulators keep watching USDT

Thailand's central bank says it is now using data analytics to scan unusually large stablecoin trades — especially in Tether's USDT — as part of a broad crackdown on illicit money. Early reviews have already flagged transfers that appear designed to dodge disclosure rules. It's a useful window into why regulators around the world keep such a close eye on stablecoins.

Stablecoins like USDT are crypto tokens pegged to a currency — here, the U.S. dollar — and are prized because they move across borders in seconds. That same speed makes them attractive for moving money quietly, which is why the Bank of Thailand's governor, Vitai Ratanakorn, says his team is screening abnormally high-volume USDT transactions and handing findings to the securities regulator, which oversees digital assets there.

The stablecoin screening is one piece of a wider campaign against what officials call the “grey economy.” Since April, banks have had to ask the purpose of cash withdrawals of 5 million baht (about $150,000) or more — a rule officials say cut large cash withdrawals by roughly 35%. Gold trading is being tightened too, after officials noticed buyers ordering bullion by app in the morning and collecting it hours later; monthly gold withdrawals reportedly fell from about 4,000 kilograms to 700.

Why Thailand? The country has become a hub for crypto-enabled scams. Authorities recently traced a romance-scam laundering network whose single wallet moved more than $122 million in ten months through cross-chain swaps, and reported 2025 scam losses reached about $3.4 billion across 173 million scam calls and texts. At the same time, the central bank is developing its own baht-backed stablecoin — so this is tightening, not banning.

Blunt crackdowns carry a cost, though. These sweeps can catch innocent people. In 2025, Thai banks froze around three million accounts while chasing “mule” accounts, and local reports described legitimate individuals and businesses swept up in what one called a “crackdown gone wrong.”

For a beginner, two takeaways. First, moving money as a stablecoin is not invisible — public blockchains are traceable, and regulated exchanges report. Using USDT normally is fine; assuming it hides you is not. Second, if you live somewhere running these sweeps, keep records of where your funds came from, because safeguards meant for scammers sometimes land on ordinary users first.