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Contents
- In short
- Can a foreigner be a director of a Thai company?
- Where signing authority is recorded: the DBD affidavit
- One signature, two signatures and the company seal
- Bank mandates: who signs payments
- A company power of attorney instead of a director's signature
- A foreign director and the work permit
- What's next
Yes, a foreigner can be a director of a Thai limited company and sign for it. The Civil and Commercial Code draws no nationality line for directors of a private company. What actually decides who can bind the company is the registered entry with the Department of Business Development (DBD): which directors are authorised, and whether one signature is enough or two are needed together, with or without the company seal. The bank is a separate matter. It works from the board resolution you hand it, and keeping that resolution in step with the DBD entry is something to confirm with your bank, not something the DBD does for you.
In short
- Nationality is not the test. The Code sets no bar on foreign directors of a private company.
- What matters is the signing condition on the DBD company certificate, not a general rule.
- The company seal is now optional "if any" — whether yours still uses one depends on its own registration.
- A bank's mandate is its own document. Keeping it in step with the DBD entry is on you.
- Whether a director needs a work permit depends on what the director actually does, not the title.
Can a foreigner be a director of a Thai company?
The Civil and Commercial Code does not ask where a director comes from. Directors are appointed by the shareholders' meeting under section 1151, and they manage the company according to its own articles, under the control of the general meeting. A foreigner can sit on the board and be named an authorised director with full signing power, in exactly the same way as a Thai national.
Two situations work differently. If the company's own business is on List 2 of the Foreign Business Act — activities touching national security, arts or culture — Cabinet approval for that business requires at least two-fifths of the directors to be Thai. And since 1 August 2026, when a Thai-majority company registers a foreign authorised director, DBD Order 2/2569 asks for extra paperwork: an Investment Explanation Letter, with three months of the Thai shareholders' bank statements and the statement of the receiving account, at formation; a later amendment such as a director change needs an Investment Confirmation Letter instead. We cover that filing, and how it links to proving real shareholders, in our note on how to register a company in Thailand.
Where signing authority is recorded: the DBD affidavit
The DBD company certificate (sometimes called the affidavit) names the authorised directors and spells out the condition under which their signature binds the company: one director alone, two directors acting together, or a signature together with the company seal (section 1111). This is the document that actually answers "who can sign," not a general assumption about directors.
Once the registered particulars have been published, they are deemed known to everyone (section 1022). The reverse also holds: the company cannot rely on a change it never registered against someone dealing with it (section 1023). That is why a director change has to be filed with the DBD within 14 days of the change (section 1157). Even if a director's own appointment later turns out to have had a defect, acts already taken in that role remain valid (section 1166).
Our lawyers start every review the same way: pull the current DBD certificate and read the signing condition off it, rather than assume how the company is supposed to work.
| Action | Who signs | What confirms it |
|---|---|---|
| Signing a contract with a counterparty | The director(s) named in the DBD condition | The DBD company certificate |
| Making a payment | The signatories on the bank's own mandate | The board resolution held by the bank |
| Filing with the tax office or immigration | The director under the DBD condition, or an agent under a power of attorney, where that office accepts one | The DBD certificate, plus the power of attorney if used — confirm acceptance with the office |
| Changing directors | Normally the general meeting; the board may fill a vacancy arising between meetings (section 1155) | The change registered with the DBD within 14 days, and an updated certificate |
When a company appoints a new foreign director under the 2026 investment-documentation rule, the same review matters: in a typical, hypothetical case, a company registers the change with the DBD but never updates the bank mandate to match. Our case note on proving real shareholders to the DBD walks through how that kind of check works in practice.
One signature, two signatures and the company seal
Examples of registered signing conditions include any one authorised director signing alone, two directors signing together, or a signature accompanied by the company seal. Which one applies to your company is whatever is written in its own registration — there is no default that applies to every company.
Since 7 February 2023, the Code itself talks about the company seal only "if any" (section 1128). That does not mean seals have been abolished, and it does not mean every company still needs one either: it depends on what your company has registered. If your company's condition still calls for the seal, a signature without it is not enough; if the condition was changed to drop the seal requirement, the signatures that condition requires are still needed — dropping the seal does not turn a joint-signature condition into a single signature.
Signing beyond the registered condition has consequences, but they are not automatic. An act done without authority, or beyond it, binds the company only if the company later ratifies it; otherwise the person who signed can end up personally liable (section 823). At the same time, if the company itself created the appearance that someone had authority — letting them sign repeatedly without objection, for instance — it can still be bound toward an outsider who dealt with them in good faith (sections 821–822). Which way a particular dispute goes is not something we predict in general terms; it depends on the facts.
Bank mandates: who signs payments
A bank works from its own form: the board resolution you give it, naming who may operate the account and sign payment instructions. We recommend checking that this list still matches your current DBD signing condition, and bringing it up to date with the bank when it has drifted. Document requirements differ from bank to bank and branch to branch, and we do not give a general checklist here, because none holds across every bank.
What causes trouble in practice is timing: a company changes its directors at the DBD, the new certificate is filed within the 14-day window, and everyone assumes the bank is automatically aware. It is not. In a typical case, a company replaces its foreign director, registers the change correctly, and then finds that a payment is held up weeks later because the bank's own mandate still lists the previous signatory. The DBD record and the bank's mandate have simply drifted apart, and the account terms with your bank govern what it takes to bring the mandate up to date.
We recommend treating the bank mandate as a step of its own, not an afterthought to the DBD filing. Our team can prepare the board resolution the bank asks for and help you coordinate submitting it around the time the director change is registered.
A company power of attorney instead of a director's signature
Where a director cannot sign in person, the company can act through an agent under a power of attorney. The rules on representation that apply to directors generally also apply here (section 1167), so the power of attorney itself has to be given by whoever is authorised to act for the company under its registered signing condition.
Whether a particular government office or bank accepts that power of attorney is a separate question from whether it was validly given, and it depends on the recipient. We suggest confirming with the specific office or bank in advance, rather than assuming any power of attorney will be accepted on its face.
A foreign director and the work permit
Being named an authorised director and having a signature that binds the company are not, by themselves, a definition of "work" under Thai law. The law does not spell out where the line sits. As Thai practitioners describe current practice, attending board meetings and signing the resolutions that come out of them is generally not treated as work. Running the company's business day to day — hiring staff, managing operations, dealing with customers — is work, and that needs a work permit tied to the company as employer.
Neither extreme is correct: directors are not automatically exempt from work permit rules just because they are directors, and not every director needs a permit just because they hold the title. What matters is what you actually do inside the company. If you plan to be involved only at board level, that is a different conversation from running operations yourself. Our guide on how to get a Thai work permit sets out the application itself; if you are not sure which side of the line your role falls on, we can help you work that out before it becomes a problem.
Board meetings themselves can be held online, provided the company's articles do not forbid it: a director joining remotely still counts toward quorum and can vote (section 1162/1, in force since 7 February 2023). That makes it easier to involve a foreign director who is not based in Thailand, without it saying anything, on its own, about work permit status.
What's next
The DBD has announced that from 1 November 2026 all registration requests for limited companies, including director changes, will go through its online DBD Biz Regist system rather than paper filing. Whatever channel is used, the substance does not change: the resolution, the 14-day filing deadline, and the need to update the bank separately all still apply.
If you are appointing a foreign director, changing your signing condition, or simply want to confirm what your company's current DBD entry actually says, our team can review the certificate, prepare the resolutions in Thai and English, and handle the registration of the change with the DBD. This sits within our company registration in Thailand with a lawyer service, and fits alongside a work permit application for a director who will be running the business. If you are only starting out, our page on going into business in Thailand as a foreigner is the wider starting point.
