The bank is often where a problem surfaces first.

Why banks see it first

A bank observes a company continuously in a way no authority does. It sees every inbound remittance and its stated purpose, every payment out and to whom, the balance between declared activity and actual flows, who holds the mandate, who calls, who signs. It is also under its own regulatory obligations on customer due diligence and ongoing monitoring, which are applied to companies as well as to individuals, and which are refreshed periodically rather than only at onboarding.

That combination means the bank is frequently the first party to notice that a company's economic reality and its declared structure do not match. A company with a Thai majority whose only funding arrives from abroad in the name of the foreign minority shareholder, or a trading company with no third party receipts, presents a picture to a monitoring system long before it presents one to a registrar.

What a review actually looks like

A periodic review is not an accusation and it is usually not dramatic. The bank writes, or the relationship manager telephones, asking the company to refresh its file. Typical requests include current company registration extracts, the shareholder list, identification for directors and for beneficial owners above a threshold, audited financial statements, a description of the business and its expected turnover, and evidence supporting particular transactions.

The questions are not unreasonable and most of them have straightforward answers for a company with genuine substance. The difficulty is specific and narrow: a company whose beneficial ownership declaration does not match its shareholder register, or whose shareholders cannot explain the origin of their capital, is being asked a question it cannot answer accurately without disclosing a problem. That is not a reason to answer inaccurately. Providing false information to a bank creates a separate and serious exposure of its own.

Reviews are also triggered rather than only scheduled. A change of authorised signatory, a new director, a sharp change in turnover, a first payment to an unfamiliar jurisdiction, a property purchase, or an amendment filed at the registry that the bank later picks up, can each bring a file forward. Since the bank refreshes what it holds against the company's public record, a company that has recently amended its registration may find two enquiries arriving in the same month, from the registrar and from the bank, about the same facts.

Source of funds enquiries

Source of funds questions arise on individual transactions as well as at review: a large inbound remittance, a property purchase, a distribution to shareholders, an unusual counterparty or jurisdiction. The bank is asking two distinct things that owners often conflate. Source of funds means where this particular money came from and how it reached this account. Source of wealth means how the underlying person accumulated their money in the first place.

Both are answered with ordinary documents where the position is ordinary: sale contracts, invoices, audited accounts, dividend resolutions, employment or business income records, statements from the paying account, and for property purchases the bank's foreign exchange transaction record evidencing funds remitted from abroad. Companies that keep these as a matter of routine answer in a week. Companies that must assemble a narrative afterwards take much longer, and the assembly itself invites further questions.

Payment holds and what they cost

Where a review is not satisfied, the practical consequences are commercial rather than legal, and they arrive quickly. Payments can be held pending documentation. New facilities can be declined. In some cases the bank exercises its right to end the relationship, which for a Thai operating company means payroll, suppliers, tax payments and rent all needing to move at short notice, at a time when opening a replacement account will be harder because the new bank asks why the last one closed.

This is the quiet reason banking sits at the centre of structural risk. A company can survive a slow regulatory question for months. Very few businesses survive three weeks without functioning payment rails. It is worth understanding that exposure before it materialises, and the answer to it is not a plan for handling the bank. It is being a company that can answer honestly.

It is also worth knowing that a relationship is rarely restored quickly once it has been questioned. Banks record the history, and a company that has had a review escalated, or an account closed, carries that record forward into every subsequent application. This is a further argument for resolving a structural problem while the banking relationship is calm and unremarkable, rather than at the moment when a payment is sitting held and the pressure to say something reassuring is at its highest.

What being genuinely in order looks like

There is nothing to be gained from advice on managing scrutiny, and this office does not offer it. The only useful preparation is to be a company whose records are accurate and complete, so that an honest answer is also a satisfactory one.

• A beneficial ownership position that is accurate, and that matches the shareholder register and the reality of who benefits.
• Shareholders who paid for their shares from their own resources, with the transfers visible in their own bank records.
• Audited financial statements filed on time, that reflect how the business is actually funded and where its revenue actually comes from.
• Contracts, invoices and receipts that support the flows through the account, kept as a matter of routine rather than gathered on request.
• For inbound property or investment funds, the bank's foreign exchange transaction record retained with the file.
• Tax filings that reconcile to the accounts and to the bank statements.
• A clear, short and true description of the business that the company would be content for any counterparty to read.

If you cannot answer honestly

Some owners will read the list above and recognise that an honest answer would disclose a structural problem. The guidance in that situation is short and it has only one branch. Instruct qualified Thai counsel immediately, before responding, and give them everything, including the arrangements that were never meant to be shown to anybody. Let them advise on what is said to the bank, what is disclosed, and in what order the wider position is corrected.

What must not happen is an inaccurate response, a document created for the purpose, or a movement of funds intended to make the position look different from what it is. Each of those converts a civil and regulatory problem into a criminal one, and each is far harder to advise on afterwards. The Thai shareholders and directors who would be named in any such response are exposed too, and they are entitled to independent advice of their own.

Home country obligations run in parallel

Bank reviews rarely stop at the Thai border. Account information is exchanged between jurisdictions under international reporting standards, and many owners have their own reporting obligations at home in respect of foreign accounts, foreign companies and controlled entities. A structure that is being examined in Thailand may raise questions for the owner's tax authority at home at the same time, on the same facts.

That argues for one coordinated conversation rather than two separate ones. Thai counsel advise on the Thai position; the owner's own advisers at home advise on theirs; and both need to be working from the same accurate description of the structure. Asia Global Partners is a private office and not a law firm, gives no legal or tax advice, and works by convening those specialists and coordinating them so that nobody is advising on half a picture.

This article is general information as at August 2026 and is not legal, tax or regulatory advice. Bank requirements vary by institution and change frequently. Asia Global Partners is a private office, not a law firm. Instruct qualified Thai counsel independently before responding to any enquiry that touches your company structure, verify company records and filing requirements with the Department of Business Development, and verify tax filing and clearance questions with the Revenue Department.

This briefing is general information, not legal, tax or investment advice. Thai rules change frequently and individual cases differ. Verify current requirements with the relevant authorities, including the Immigration Bureau, the Board of Investment, the Land Department, the Department of Business Development and the Revenue Department, and take advice on your own facts before acting.