Bank of Thailand Mandates Source Declaration for Large Cash Deposits
Starting November 1, 2026, the Bank of Thailand will require customers to declare the source of funds for cash deposits exceeding 5 million baht made at bank branches.
The Bank of Thailand (BOT) has announced a new regulatory measure concerning large financial transactions. Effective November 1, 2026, individuals or entities depositing cash in amounts exceeding 5 million baht at physical bank branches must provide documentation explaining the source of these funds.
According to Prachachat Business, this requirement specifically targets over-the-counter transactions at bank branches. Deposits made through electronic channels are currently excluded from this specific mandate. The scope of the regulation is broad, extending beyond simple cash deposits to include the clearing of checks or drafts, the exchange of Thai baht banknotes, the receipt of cash for the issuance of checks or drafts, and various buying and selling activities involving financial instruments.
For residents and long-term visitors in Thailand, this update is significant for those managing substantial liquid assets. While the measure is designed to enhance financial transparency and anti-money laundering oversight, it necessitates that individuals planning large transactions at bank branches prepare the necessary documentation in advance to avoid potential delays.
At this stage, specific details regarding the exact types of acceptable documentation and the internal verification processes banks will employ remain to be fully clarified by individual financial institutions. Customers are advised to consult with their specific bank regarding their internal compliance procedures before initiating such transactions.
