Thailand's central bank will implement stricter cash reporting requirements beginning in the fourth quarter of 2026, mandating that individuals provide official documentation and verification of fund sources for deposits exceeding 5 million baht (approximately $150,000) into bank accounts. The measure represents an escalation of anti-money laundering controls that will run parallel to enhanced monitoring of large stablecoin transactions, particularly USDT (Tether), conducted jointly by the central bank and Thailand's Securities and Exchange Commission.
The new rules extend enforcement mechanisms introduced in April 2026, when Thai authorities began requiring customers to justify large cash withdrawals above the 5 million baht threshold and explain why alternative payment methods were unsuitable. That initial policy proved effective, reducing high-value cash withdrawals by 35 percent, providing the regulatory foundation for broader source-of-funds verification requirements.
The dual regulatory approach—targeting both traditional cash flows and cryptocurrency transactions—signals Thailand's effort to close potential loopholes in anti-money laundering compliance as digital asset adoption accelerates. By coordinating stablecoin oversight with enhanced cash documentation, regulators aim to prevent cross-border value transfer circumvention and maintain visibility over large financial movements regardless of payment channel.