Bank of Thailand Proposes Stricter Documentation Requirements for Inbound Foreign Exchange Transactions
In addition to the proposed increase in the foreign income repatriation threshold under the Bank of Thailand’s relaxations to foreign exchange regulations (as outlined in our previous article, Proposed Relaxations to Foreign Exchange Regulations), the Bank of Thailand (“BOT”) has proposed measures to strengthen regulatory oversight of inbound foreign exchange transactions. These measures aim to mitigate appreciation pressure on the Thai Baht, enhance transaction transparency, and prevent the inflow of funds inconsistent with their declared sources or otherwise undesirable.
The BOT has launched a public consultation on the Draft Notification on Rules and Procedures for Foreign Exchange Transactions (Draft Rules on Verification of Inbound Foreign Exchange Transactions). The consultation period runs from 30 December 2025 to 16 January 2026, with feedback informing the final regulatory framework.
Current Regulatory Framework
Under existing rules:
- Foreign currency may be brought into Thailand without amount limitation for conversion into Thai Baht or deposit into a foreign currency deposit (“FCD”) account.
- Transaction participants are required only to declare the source of funds.
- No supporting documentary evidence is currently required.
Rationale for the Draft Rules
The proposed amendments are intended to:
- Enhance scrutiny of inbound foreign exchange transactions and align inbound controls with outbound foreign exchange rules, under which purchases or transfers of foreign currency of USD 200,000 or more (or equivalent) are subject to documentary verification unless Know Your Business (“KYB”) procedures have been applied.
- Increase transparency in foreign exchange transactions.
- Prevent misrepresentation of fund sources and the use of inbound transactions for non-genuine or undesirable purposes.
- Mitigate appreciation pressure on the Thai Baht by moderating demand arising from inbound foreign exchange transactions through enhanced verification and documentation requirements.
Key Features of the Draft Rules
While inbound foreign exchange transactions remain unrestricted in terms of amount, the Draft Rules propose stricter documentary verification requirements, differentiated by the type of licensed service provider.
1. Transactions Conducted Through Commercial Banks
A. Transactions of USD 200,000 or More (or equivalent)
Commercial banks are required to verify supporting documents corresponding to the declared source of funds on a transaction-by-transaction basis.
Exception: Documentary verification may be waived for routine transactions of business customers that are well known to the bank and subject to ongoing KYB and Customer Due Diligence (“CDD”) processes.
B. Certain High-Risk Inbound Transactions
For inbound transactions that may be used for non-business-related purposes or where the source of funds is unclear, commercial banks would be required to obtain supporting documentation on a transaction-by-transaction basis, even if the customer has already undergone KYC/KYB procedures. Such transactions include, but are not limited to:
- Proceeds from the sale of real estate
- Proceeds from the sale of digital assets
- Capital inflows other than direct investment or securities investment
- Other income sources that cannot be clearly identified
C. Digital Asset-Related Proceeds
Where foreign currency is derived from the sale of digital assets, banks must additionally obtain documents evidencing either:
- The source of the digital assets, or
- The source of funds used to acquire such digital assets.
2. Transactions Conducted Through Non-Bank Operators
A. Transactions of USD 200,000 or More (or equivalent)
Non-bank operators would be required to verify supporting documents corresponding to the declared source of funds for every transaction, without exception.
B. Digital Asset-Related Proceeds
Supporting documents evidencing the source of the digital assets or the funds used to acquire such assets must be obtained in all cases.
C. Inbound Cash Transactions Exceeding USD 15,000 (or equivalent)
Non-bank operators must obtain the customs declaration evidencing that the cash was declared to Thai Customs authorities upon entry into Thailand.
Potential Impacts
- High-value transaction participants and business operators not subject to ongoing KYB processes, or whose transactions fall within categories requiring enhanced scrutiny, may face increased compliance burdens, particularly in preparing and submitting supporting documentation.
- Commercial banks and non-bank operators will bear additional compliance and operational responsibilities in verifying documents and ensuring adherence to the enhanced regulatory standards.
Conclusion
The Draft Rules represent a clear move toward stricter verification of inbound foreign exchange transactions, particularly for high-value transfers and funds derived from digital assets or non-traditional sources. Although inbound transactions remain unrestricted in amount, documentation requirements will increase significantly. Market participants should review their transaction structures and supporting documentation in advance to ensure readiness once the rules are finalized.
Author: Panisa Suwanmatajarn, Managing Partner.
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