Thai push on grey economy hits stablecoins

Thai authorities have expanded their grey-economy enforcement from traditional cash channels to digital assets, with a particular focus on stablecoins. The Bank of Thailand and the country’s Securities and Exchange Commission are now using data-analytics tools to screen and audit high-volume stablecoin transactions.

Regulators are paying close attention to transfers involving Tether’s (USDTUSD) USDT. Some of the monitored flows have been flagged as appearing designed to evade disclosure rules or to circumvent normal banking channels, prompting coordinated follow-up regulatory actions.

The data-analytics approach allows Thai regulators to concentrate on large and potentially suspicious stablecoin movements rather than retail-sized activity. By focusing on high-volume transactions, authorities are targeting flows that could be linked to unreported economic activity or attempts to move value outside conventional oversight.

The screening effort is occurring alongside other anti-grey-economy initiatives, positioning stablecoin oversight as one component of a broader push to tighten control over both cash and digital value transfers.

As part of the same campaign, Thai regulators have imposed stricter checks on significant cash flows through the banking system. Since April, banks have been required to verify the purpose of cash withdrawals of 5 million baht, or about $150,000, or more.

The central bank reports that this measure has reduced such large cash withdrawals by roughly 35%. Officials plan to extend similar scrutiny to inflows: from the fourth quarter, banks will be required to verify the source of funds for deposits of 5 million baht or more.

Together, the new rules on withdrawals and upcoming deposit verification are intended to make it harder to shift large sums in cash without a documented economic rationale, complementing the new monitoring of stablecoin transactions.

While Thailand steps up domestic oversight, the global stablecoin market has also been shrinking. Overall stablecoin market capitalization has declined by about $10 billion since its peak in May 2026, with June alone seeing a contraction of $7.7 billion.

The two largest dollar-pegged stablecoins account for most of this retreat. Tether’s (USDTUSD) USDT has fallen from about $190 billion to roughly $184 billion, a decrease of around $6 billion, while Circle’s (CRCL) USDC has dropped from near $80 billion to about $73 billion, a decline of roughly $7 billion.

These shifts in global supply are occurring as regulators and market participants monitor how tighter oversight and evolving requirements may affect on-chain liquidity and trading flows, including in markets such as Thailand where enforcement is intensifying.