Registering a company in Thailand establishes the legal foundation for a business, but opening its corporate bank account requires separate preparation. The bank needs to understand who controls the company, where its funds will come from and which transactions it intends to carry out. Foreign founders face additional questions when owners live abroad, funding moves through several jurisdictions and local operations are only beginning. A consistent account of the business, supported by evidence, helps founders navigate the review and avoid repeated requests for information.

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The regulatory basis of bank compliance

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The review is grounded in anti-money laundering rules and requirements of the Anti-Money Laundering Office (AMLO). These provide for identification of the legal entity and its ultimate beneficial owners. Banks apply Know Your Customer (KYC) and Customer Due Diligence (CDD) procedures according to risk.

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Closer scrutiny also reflects efforts to combat mule accounts, which are used to move funds connected with fraud. In January 2025, the Bank of Thailand (BOT) announced stronger screening, information sharing and refusal of new accounts for individuals at high risk of involvement in such schemes. For legitimate businesses, this highlights the importance of a clear account purpose and verified identities of the people who control it.

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Banks also apply their own customer acceptance criteria. The joint AMLO and BOT statement on sanctions risks confirms that some institutions apply practices exceeding AMLO requirements. The document checklist and willingness to serve a particular business should therefore be checked with the selected bank.

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Corporate structure and permission to operate

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The first step is to identify the entity applying for the account. A Thai company with foreign shareholders and a company registered overseas follow different procedures. Moreover, under the Foreign Business Act B.E. 2542, a Thai legal entity may qualify as foreign for the purposes of that Act, including where foreigners hold at least half its capital. Local incorporation alone does not remove restrictions on business activities.

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Where an activity falls within the relevant restrictions, the company needs to establish the appropriate authorization regime. Depending on the circumstances, this may involve a Foreign Business License (FBL) or a Foreign Business Certificate (FBC), including in connection with BOI investment promotion. The requirement depends on the activity and structure, rather than automatically applying to every company with foreign owners. A concise explanation of the applicable regime, accompanied by the relevant permissions, is useful for the application.

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Using a Thai shareholder as a front to circumvent the Foreign Business Act creates a separate legal problem. Such nominee arrangements are prohibited under Section 36 of the Act. A nominal Thai majority does not remedy a structure used to hide the actual owners and circumvent restrictions. Corporate documents should reflect the real relationships, and the chosen structure should support a lawful route into the market.

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Reasons for rejecting an account application

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One problematic issue is an opaque ownership structure. Naming a foreign holding company as the shareholder is insufficient to establish the Ultimate Beneficial Owner (UBO). To prepare the application, founders should map ownership through to natural persons, identify shareholdings and explain other means of control. Supporting corporate documents for each entity in the chain should allow the bank to verify the information.

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A shareholding below 25% is not a universal exemption from disclosure. The joint AMLO and BOT statement provides for stricter checks on high-risk customers, which may extend to owners below that level. The file should also explain actual control over the company’s decisions.

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Another issue is the company’s economic connection with Thailand. The application should show why a local account is needed, whether for customer or supplier payments, rent, team expenses or an investment project. A lease, existing commercial agreements and an operational description help explain that connection. A new business can prepare a launch budget, letters of intent and an implementation schedule, clearly distinguishing plans from contracts already signed.

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Inconsistencies between information sources also create difficulties. If the application describes IT consulting, the website offers payment services and the forecast involves receipts from numerous third parties, the actual model requires explanation. Before submission, founders should check the website, corporate documents, contracts and funds flow description for consistency. Material international connections should also be explained, with evidence of the lawful purpose of payments involving higher-risk counterparties.

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Documents and identification of foreign signatories

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The corporate file should follow the chosen bank’s checklist for the relevant product. It may include an up-to-date registration document, constitutional documents, a shareholder list, identification of directors and beneficial owners, and a resolution to open the account. The resolution should identify signatories and how withdrawals and payments are authorized. Where a representative acts, their authority should be properly documented and certification requirements checked.

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Document age has practical consequences. For its corporate current account, Bangkok Bank specifies a company registration document issued within the preceding month, together with board minutes authorizing account opening and identifying signatories. An earlier file may therefore need refreshing even if the company’s particulars remain unchanged.

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For its corporate savings account, KASIKORNBANK specifies a registration document no older than three months. For companies registered less than one month earlier, it additionally requests six months of statements from those signing the application. It also requests documents for shareholders holding at least 15%. Foreign individuals use passports; signatories authorized to withdraw or make payments must verify their identity at a branch. These are product-specific requirements, rather than a uniform standard for all banks.

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Visa and work permit requirements should be checked against the foreign individual’s role. For example, Bangkok Bank’s foreign currency account checklist specifies a passport and a work permit or embassy reference letter for foreigners not listed as directors in the company registration document. This should not be generalized into a claim that every foreign shareholder needs a work permit to open any corporate account.

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A company registered overseas follows a separate procedure. Bangkok Bank offers such companies a THB savings account through its head office on Silom Road. Its published checklist requires notarization of corporate documents and attestation by a Thai embassy or consulate in the country of incorporation. The procedure for a locally incorporated company therefore cannot automatically be applied to an overseas legal entity.

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Sources of funds and a clear business model

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When preparing financial explanations, it is useful to distinguish Source of Funds (SOF) from Source of Wealth (SOW). SOF explains the origin of the specific amount to be deposited; SOW explains how the owner accumulated their capital. A statement that funds are “personal savings” is more useful when supported by evidence of income, an asset sale, dividends or the actual basis on which those savings were built.

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Where funding takes the form of a shareholder loan, founders should prepare the loan agreement and evidence explaining the lender’s financial capacity. An investment contribution should be supported by its legal basis and the investor’s identity. It is useful to describe the first incoming transfer in advance: the sender, originating account, amount and underlying basis. Where the payer and contractual party differ, their relationship should be explained.

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The business model is best presented through the flow of funds. The description should show what customers pay for, which amounts constitute company revenue, who receives outgoing payments and whether other people’s funds pass through the account. It should state the expected monthly turnover, payment count, currencies and main counterparty countries. A startup’s forecast should be tied to its budget and customer acquisition plan, without presenting future sales as existing contracts.

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For fintech projects, the legal classification of transactions is particularly significant. The Payment Systems Act B.E. 2560 requires licensing or registration for relevant categories of payment services, including e-money, accepting payments on behalf of others and electronic funds transfers. An open bank account does not replace the necessary permission. A model involving receipt of customer funds should therefore be explained separately from ordinary payments for the company’s own goods or services.

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Submitting the application and responding to rejection

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Preparation should start with a discussion of the model with a bank team serving corporate customers. A short company profile, ownership structure and transaction forecast are useful for obtaining the checklist for the appropriate account. Before arranging an in-person visit, founders should confirm who needs to attend, which originals are required and how signatures and authority must be documented.

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At the meeting, the authorized person should be able to explain the operations and expected payments. A one-page description with key information and a list of supporting documents can help with preparation. Additional requests are best answered point by point, referring to the relevant agreement or statement. Where information has changed, an update should explain the reason for the change.

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Following a rejection, the first task is to establish whether deficiencies can be remedied by refreshing a registration document, verifying a beneficial owner, adding financial evidence or clarifying the activity. If the sector or model falls outside the bank’s acceptance policy, another institution can be considered using the same accurate description of the business. Changing banks does not resolve missing permissions or inconsistencies in ownership.

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An opening timeline should be discussed after the initial file review. Launch planning should allow for additional requests, certification of foreign documents and identification of signatories. Founders should separately check the availability of the functions they need: a foreign currency account, international transfers, corporate online banking and suitable limits. Having an account number does not by itself confirm that every service has been enabled.

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Compliance after the account is opened

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The relationship with the bank continues after approval. BOT is developing an approach combining customer identification, controls for high-risk accounts and detection of unusual financial behavior. For a company, this makes it useful to keep the information provided current and retain documents explaining its transactions.

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Internal procedures should provide for notifying the bank of changes to directors, owners, signatories and activities in accordance with the service terms. Where turnover grows significantly or the company enters new markets, an updated forecast and supporting agreements should be prepared in advance. Consistency between actual payments and the declared model makes bank inquiries and individual transaction reviews easier to address.

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Corporate online banking requires a separate application. For example, Bangkok Bank requests a board resolution and a document appointing a Super User for BIZ iBanking. When activating the service, the company should agree user permissions, payment approval rules and access removal procedures. The person submitting a payment and the person approving it should act within the authority assigned by the company.

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Preparation for bank compliance begins while the business is being structured. Transparent ownership, appropriate permissions and explained funding allow founders to assemble a consistent file. For a foreign founder, the practical outcome is the ability to answer the bank’s questions clearly and substantiate those answers with documents. This work should form part of the launch plan alongside incorporation and the first commercial agreements.

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Connect with TUCC

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