Director Liability in Thailand 2026 for Foreign Directors: Civil Exposure, Criminal Risk, Signing Authority and the Work Permit Trap

Key takeaways

• The source of a director's liability in a Thai private limited company is the Civil and Commercial Code, sections 1144 and 1167 to 1170: you must act with the care of a prudent businessperson, you are liable to the company for breach, and any shareholder can sue on the company's behalf.
• Within your registered authority, the company is bound; outside it, you are. A document signed within the signing conditions on the DBD certificate binds the company. Outside those conditions, and without ratification, the director is personally liable to the third party.
• Criminal exposure has three layers: the 1956 Act on offences by partnerships and companies (mostly fines for missed filings and missing books), the director-liability clauses in sector laws (Revenue Code, Foreign Business Act, labour, data protection and others), and, since 2017, the rule that a director is criminally liable only where the company's offence results from their own act or omission. The old presumption of guilt is gone.

One of those sector laws now has an enforcement record: the PDPA fines of 2024 and 2025, and section 81 which punishes the responsible director alongside the company, are explained in Thailand PDPA Compliance 2026: What the First THB 21.5 Million in Fines Means for Foreign Companies, Cross-Border Transfers to Head Office, SCC and the New BCR Rules .

• Signing authority is whatever the DBD certificate says. "One authorised director signing with the company seal" and "two directors signing jointly" are the usual forms. A document that does not meet the condition does not bind the company. Since 1 August 2026, DBD Order 2/2569 requires a confirmation statement when a foreign national becomes an authorised director of a company that previously had only Thai authorised directors.
• Signing company documents while physically in Thailand is "work". A foreign director without a work permit who signs contracts or cheques in Thailand risks a fine and deportation. Signing abroad, or electronically from abroad, is outside the rule.
• Five steps to protect yourself: define your authority in writing, stay away from nominee structures, do not sign personal guarantees, keep board minutes, and buy D&O insurance.

When a foreign company sets up in Thailand, the Foreign Business Act usually caps foreign shareholding at 49%, so control is often exercised through a foreign authorised director instead: the company seal sits with the foreign parent, the bank mandate is signed by the foreign director, contracts carry their signature. The design protects control. It also concentrates every legal consequence on one person, who is frequently the regional manager or a parent-company executive who flies in a few times a year.

The three disputes we see most often in our Bangkok office follow the same pattern. A foreign director returns home, and the Thai company is audited by the Revenue Department or sued by a dismissed employee; the director becomes a defendant personally, or is barred from leaving Thailand on the next visit. A Thai partner argues that a contract the foreign director signed is void because it exceeded their authority, or turns the argument around and claims damages from the director personally. Or a parent-company nominee who never took part in management is named as a co-defendant when the company is prosecuted. This guide sets out, under the law in force in October 2026, what a foreign director of a Thai company is actually liable for, how signing authority works, and what to do about it.

1. The basic duties: what the Civil and Commercial Code says

The duties of a director of a Thai private limited company are set out in Book III, Title XXII of the Civil and Commercial Code (CCC):

The point that matters for foreign directors is section 1168 paragraph 2. The four joint liabilities do not depend on whether you took part. A director who lives abroad and never looks at the Thai books is still liable, together with the others, if a local manager misappropriates funds or dividends are paid out improperly. This is the main legal risk of being a nominee director.

1.1 The 2023 amendment (Amendment No. 23)

The CCC Amendment Act (No. 23) was published in the Government Gazette in November 2022 and took effect on 7 February 2023. The changes that touch directors directly:

• The minimum number of shareholders fell from three to two.
• Dividends must be paid within one month of the resolution of the general meeting or the board, and the directors are responsible for making that happen. The deadline had been imposed by ministerial order since 2017; the amendment put it in the Code.
• Board and shareholder meetings may be held electronically, under the 2020 Emergency Decree on electronic meetings, but the duty to keep minutes and attendance records is unchanged.
• A statutory merger procedure was added, with heavier notification duties on directors.

2. Civil liability: who can sue a director, and for what

2.1 Liability to the company

A director who breaches the duty of care, exceeds the articles or a shareholder resolution, or breaches any duty under section 1168 and causes the company loss is liable under section 1169. The claims we see most often:

• Signing a large guarantee or loan in the company's name without board or shareholder authority.
• Failing to call a general meeting when losses reach half of the capital (section 1172).
• Failing to file the annual list of shareholders (section 1139), or failing to file the financial statements with the DBD within one month of the general meeting under section 11 of the Accounting Act 2000.
• Undisclosed transactions with the director or a related party (the agent's duty of loyalty under section 1167).

2.2 Derivative suits and creditors' claims

When the director is also the person who controls the company, the company will not sue itself. Section 1169 therefore allows:

• Any shareholder, whatever their holding, to sue the director on the company's behalf. In foreign-Thai joint ventures this is the standard weapon once the partners fall out: the Thai shareholder uses section 1169 to attack the foreign director's past signatures.
• A creditor of the company to sue the director directly while the creditor's claim remains unpaid.

2.3 Liability to third parties: authority is the dividing line

The Supreme Court's position is consistent: a director who acts under the articles or a shareholder resolution is not liable to the company for the result. The reverse case is the one that catches foreign directors: a personal joint guarantee of the company's bank debt, which Thai banks routinely demand, is the director's own obligation and survives their resignation. Recovering against a guarantor is covered in our guide to debt recovery in Thailand .

3. Criminal liability: three layers

3.1 First layer: the 1956 Act on offences relating to registered partnerships, limited partnerships, limited companies, associations and foundations

This Act punishes company-law breaches by companies and their directors. Most penalties are fines; a few carry imprisonment:

Most of these are offences of omission: not filing, not calling, not keeping. A foreign director who is rarely in Thailand and leaves administration to local staff is exposed simply by not knowing what has to be done. In recent years the DBD has fined every registered director personally when a company files its financial statements late.

3.2 Second layer: director liability under sector laws

The provisions that can actually put a foreign director in prison are the ones in sector laws that extend the company's offence to the "responsible director":

What the Labour Protection Act actually requires of the company, so that the director is not the one who failed to prevent the breach, is set out in Thailand Labour Law 2026 for Foreign Employers: Minimum Wage, Working Hours, Leave, Severance, Social Security and Work Rules Explained .

The Food Act, the Cosmetics Act and the Medical Device Act contain the same kind of provision, so a director of a Thai importer of regulated products carries that exposure as well. The licences and penalties under those three Acts are in Thai FDA Approval 2026: How a US or Foreign Brand Gets Food, Dietary Supplements, Cosmetics and Medical Devices Registered in Thailand, Timelines, Penalties and Document Legalisation .

Since 2026 Thailand's deportation rules also list foreign executives of companies that breach the Foreign Business Act among those who can be deported and barred from re-entry. The nominee rules, and the lawful routes of BOI promotion, a Foreign Business Licence and treaty structures, are set out in our guide to establishing a business in Thailand . The Revenue Code penalties, and what a Thai subsidiary has to file each year, are in our Thai corporate tax guide .

The two paths in the regulation, the six grounds and the reporting duty that follows even a suspended sentence are explained in Thailand's New Deportation Regulation 2026: How a Foreign Business Act Conviction Can End a Foreign Executive's Stay, Even on Probation or a Fine .

3.3 Third layer: no more presumption of guilt since 2017

The Act Amending Legal Provisions Relating to Criminal Liability of Representatives of Juristic Persons took effect in February 2017 and amended 76 laws at once. Before it, when a company committed an offence, its directors and managers were presumed guilty and had to prove they were not involved. After it, a director is criminally liable only where the company's offence resulted from the director's own act or omission, and the prosecution carries the burden. The change followed a Constitutional Court ruling that the old presumption violated the presumption of innocence. For a foreign director, holding the title is no longer enough to convict, but a failure to supervise can still be characterised as an omission.

3.4 The practical risk in criminal proceedings: travel bans and warrants

In Thai criminal cases, especially tax and Foreign Business Act cases, the measures commonly used against foreign defendants are:

• An application to the court at the investigation stage to bar the defendant from leaving Thailand, with immigration blacklisting.
• Where the defendant is abroad and does not appear, an arrest warrant, executed at the airport on the next entry.
• In tax cases, pursuit of the tax, a doubled penalty and a monthly surcharge of 1.5% against the company and, where the director is liable, seizure of the director's personal assets.

How these measures work once a foreign defendant is actually arrested, including the detention limits, the bail conditions and the per-trip court permission, is explained in Bail in Thailand for Foreign Defendants 2026: The First 48 Hours, Detention Limits, Passport Surrender, the Travel Ban and the Thai Guarantor .

4. Signing authority: what the DBD certificate says is what counts

4.1 "Authorised directors" and "signing conditions"

In a Thai company, not every director can bind the company. Authority to represent it is whatever appears in item 3 of the company affidavit issued by the Department of Business Development, "authorised directors and signing conditions". The usual forms:

A director who is not on the list of authorised directors cannot bind the company by signing, even though they sit on the board, unless the company ratifies.

4.2 The company seal

A Thai company may register a seal. Once registered, and where the signing condition says "and affixes the company seal", a document without the seal does not bind the company. This is why foreign parents often keep the seal at head office as a control device. It is lawful, but it cuts both ways: if the seal is lost or used without authority by local staff, the director still has to prove the document was unauthorised.

4.3 Signing in Thailand without a work permit

The Department of Employment has consistently taken the view that a director who signs documents, chairs meetings or carries out business while physically in Thailand is "working" within the meaning of the Emergency Decree on the Management of Foreign Workers. The consequences:

• A foreign director who signs contracts, cheques or tax filings while in Thailand needs a work permit, and the permit must cover a director or management position.
• Signing abroad and sending the document to Thailand, or signing electronically from abroad, is not work performed in Thailand and needs no permit.
• Entering visa-free to attend a board meeting, without signing anything, falls within the meeting exemption.

Visa-free entry, cut from 60 to 30 days for most Western, Japanese and Korean passport holders since 15 September 2026, does not change this. In practice, many foreign authorised directors fly in as tourists and sign cheques "while they are here". Once a dispute with the Thai partner starts, a complaint to the Department of Employment for illegal work becomes a bargaining chip. Working without a permit carries a fine of THB 5,000 to 50,000 and deportation.

A retiree who holds shares in a Thai company but may not sign or work is in the same position; the long-stay visas and their work prohibitions are set out in Retiring in Thailand 2026: Retirement Visa (O-A and O-X), LTR, Thailand Privilege and DTV Compared for American and Other Foreign Retirees .

How a director or manager obtains the Non-B visa, the work permit and the one-year extension, and what the permit must say for signing to be lawful, is in Working in Thailand as an Expat 2026: Non-B Visa, Work Permit, 90-Day Reporting, Personal Income Tax and Social Security Explained .

4.4 Changing signing authority, and DBD Order 2/2569

A change of signing conditions needs a board or shareholder resolution, depending on the articles, and is registered with the DBD (forms BOJ.1 and BOJ.4), usually within one to three working days. Until the DBD registration is updated, the old authorised director can still bind the company. A foreign director who steps down must therefore confirm that the change has been registered, and tell the company's banks to change the signature mandate at the same time.

Since 1 August 2026 the registration itself has an extra hurdle. DBD Order No. 2/2569, issued on 14 July 2026, replaced the orders of December 2025 and April 2026 and tightened the documents required where a foreign national is a minority shareholder or an authorised director:

• A new company with a foreign shareholder below 50%, or a wholly Thai-owned company that appoints a foreign authorised director at incorporation, must file an investment explanation statement, three months of bank statements for every Thai shareholder showing where their share capital came from, and a bank statement of the director who received the capital.
• An existing company that appoints a foreign authorised director where it previously had only Thai authorised directors must file an investment confirmation statement.
• A company registered on or after 1 August 2026 that changes its authorised directors within a year must file the explanation statement together with proof that the full share capital was received from every shareholder.

The purpose is to catch nominee shareholdings. A foreign group that wants to put its own executive on the signature line should check that the Thai shareholders' capital can be traced before it files.

How to set the company up lawfully in the first place, from promoters and capital to BOI, FBL and the Treaty of Amity, is covered in Setting Up a Company in Thailand 2026 for Foreign Investors: The 49% Rule, Nominee Shareholder Risk, Capital and Work Permit Ratios, BOI and the New DBD Checks .

5. Resignation, removal and liability after you leave

• Resignation: under CCC section 1153/1 a director's written resignation takes effect when it reaches the company; the director may also file it with the DBD directly, and no shareholder approval is needed. But until the DBD record is updated, third parties may still treat you as a director.
• Removal: under section 1151 the general meeting may remove a director at any time. In a joint venture where the Thai side holds 51%, the Thai shareholders can in theory remove the foreign director unilaterally. This is the core item a shareholders' agreement must deal with in advance.
• Liability after leaving: liability for acts during the term does not end with the term. Personal guarantees, contracts signed, financial statements not filed while you were in office all follow the directors who were in office at the time.

6. Five steps to protect yourself as a foreign director

• Define and document your authority. Have the board resolve the limits in writing, for example that any single transaction above THB 1 million needs a board resolution, and do not sign beyond them. Keep the resolutions on file; they are the basis for the section 1170 defence.
• Do not be a nominee, and do not use nominees. If the shareholding depends on Thai nominee shareholders, the foreign authorised director is the first defendant under section 36 of the Foreign Business Act. The lawful routes are BOI promotion, a Foreign Business Licence or a treaty structure.
• Do not sign personal guarantees, or cap them. When a Thai bank asks for a director's joint guarantee, offer a parent-company guarantee instead, or limit the amount and the term.
• Review the accounts every quarter and keep the record. Require the Thai company to send quarterly financial statements, tax filings (PND.50, PP.30) and social security records. A record that you supervised is the answer to an allegation that you failed to prevent an offence.
• Buy directors' and officers' (D&O) insurance. Thai insurers offer local policies covering civil damages and criminal defence costs, but not intentional offences or fines.

Frequently asked questions (FAQ)

I am only a nominee director appointed by the parent company and never took part in management. Am I liable if the company gets into trouble?

Civilly, yes for the four joint duties in CCC section 1168 paragraph 2: share payments, books, dividends and the execution of resolutions. They apply to every director regardless of involvement. Criminally, since 2017 the prosecution must prove that your act or omission caused the company's offence; a director with no signing authority who took no part is at lower risk, but may still be named as a defendant first and have to defend later.

Does a contract need my signature as the foreign director to be valid?

Check the signing conditions on the DBD affidavit. If it says "Director A signs and affixes the company seal", only A's signature with the seal binds the company. Anyone else's signature does not bind the company unless the company ratifies it.

I enter Thailand visa-free and sign company cheques during the trip. Is that a problem?

Yes. Signing company documents in Thailand is "work" and needs a work permit. The penalty is a fine of THB 5,000 to 50,000 and deportation. Sign abroad or use an electronic signature from abroad.

Can my Thai partner remove me from the board unilaterally?

Under CCC section 1151 the general meeting may remove a director at any time. If the Thai shareholders hold a majority, formally yes. The protection is a shareholders' agreement that fixes board seats, signing authority and the matters that need a special resolution.

If the company evades tax, can I be imprisoned?

Tax evasion under section 37 of the Revenue Code carries imprisonment of 3 months to 7 years and a fine of THB 2,000 to 200,000. Under the 2017 rule, a responsible director is punished where their act or omission caused the offence. An authorised director will find it hard to argue they did not know.

I have resigned. Do the company's later debts have anything to do with me?

Debts incurred after you resign are not yours, but personal guarantees signed during your term remain in force, unfiled financial statements and uncalled meetings during your term are pursued against the directors of the time, and until the DBD record is updated, good-faith third parties may still treat you as a director.

Is D&O insurance available in Thailand?

Yes. The Thai market offers D&O policies covering civil damages, investigation and criminal defence costs, but not intentional offences, fines or liabilities connected with nominee shareholdings. Foreign authorised directors should have one.

How Louis Group can help

Being a director of a Thai company is not a liability that starts when you sign; it runs from the day the DBD registers you until the day it removes you. The biggest risk for a foreign director is not deliberate wrongdoing but not knowing what Thai law requires and, because you are rarely in the country, failing to supervise. The joint civil liabilities and the "failure to prevent" standard in criminal law are built for exactly that situation.

Louis & Partners Thailand in Bangkok advises foreign directors on the design of signing authority, shareholders' agreements, D&O cover, annual corporate compliance reviews, and defence in civil and criminal proceedings against directors. If you are, or are about to become, a director of a Thai company, start with a review of your authority and your exposure.

Author: Sopon Sirimongkolrat , Founder of Louis & Partners Thailand, Thai-qualified lawyer practising company law, commercial disputes and arbitration.

*This article reflects Thai law in force in October 2026. It is general information, not legal advice; facts and court practice vary from case to case, and you should consult a Thai-qualified lawyer on your own situation.*

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• The Complete Guide to Establishing Your Business in Thailand
• Corporate Tax in Thailand 2026 for Taiwanese-Owned Companies
• Debt Recovery in Thailand 2026: Prescription, Court Fees, Enforcement and Contract Design