Director liability in Thailand: what you sign up for

The duties in outline

Under the Civil and Commercial Code, directors must conduct the company's business with the diligence of a careful businessperson, comply with the law, the articles and shareholder resolutions, and avoid unauthorised self-dealing and competing business. They are jointly responsible for the truth of registered filings, the keeping of proper books, the calling of meetings and the propriety of dividends. Liability to the company for breach is civil; a long list of specific statutes then adds personal, and often criminal, liability for the offences the company commits in areas a director is deemed to control.

Thai practice also distinguishes the board at large from the authorised directors, those registered as empowered to sign for the company, alone or jointly, with or without the seal. The distinction shapes exposure: statutes that punish the responsible director reach the authorised signatories first, and banks, counterparties and officials deal only with them. Taking a seat without signing authority reduces day-to-day exposure without eliminating it; taking sole signing authority in a company you do not control is the single most dangerous configuration on offer.

Where personal exposure actually arises

The pattern across the statutes: exposure follows signature and control. The director who signs the PND filings, the cheques and the employment documents is the natural defendant. Directors of multiple group companies should notice that the exposure multiplies by entity, and that fines for a dormant, unfiled company accrue against them as surely as for a trading one; our separate briefing on closing a Thai company properly covers how abandonment plays out.

The nominee director trap

Serving as a director in name only, for a fee, without knowledge of the business, offers none of the protection people imagine. The law does not recognise a passive class of director: the nominee carries the full duties and the full personal exposure, while holding none of the information needed to manage it. Worse, where the directorship exists to dress up a structure that conceals foreign control of a restricted business, the nominee director sits inside a Foreign Business Act offence with criminal penalties of its own, and the 2026 enforcement environment is actively looking for exactly this arrangement. The same logic runs in reverse for foreigners asked to stay off the registry while a local name fronts the board: the structure that protects nobody in the good years incriminates everybody in the bad ones.

Before accepting any Thai directorship, ask for three things: the last two years of filings, sight of the tax and social security position, and a written indemnity from the shareholders. A company that hesitates on any of the three has answered the real question.

D&O insurance and other mitigations

Directors and officers insurance is available in Thailand from the major insurers and is worth having for any substantial company: it funds defence costs and covers civil claims for management errors. Understand its edges, though. Policies exclude fraud, wilful misconduct and criminal fines, which is precisely where Thai director exposure concentrates, so insurance complements rather than replaces the structural protections: board minutes that record dissent, delegated authorities in writing, a compliance calendar actually observed, indemnities from the parent, and resignation filed with the DBD promptly when leaving, because liability follows the register, not the farewell email. A resignation the company never registers is a directorship that continues.

Taking the seat with open eyes

None of this argues against serving as a director in Thailand; it argues against serving casually. A directorship of a compliant company, with information rights, a working calendar and insurance in place, is routine. Asia Global Partners structures boards for client companies with exactly that in mind, and where a principal needs resident directors, we arrange qualified professionals who govern properly, rather than names on a registry, because the other kind is no longer merely poor practice; it is the pattern the regulators now read for.

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.