Choosing the right company structure in Thailand is one of the most consequential decisions you will make as a foreign entrepreneur. The structure you select determines your personal liability exposure, tax obligations, foreign ownership limits, and the regulatory burden you will carry for as long as the business operates. Thailand offers several distinct entity types, each with its own legal characteristics, and the right choice depends on your business model, investment size, risk tolerance, and whether you plan to seek BOI promotion or a Foreign Business License. This guide compares every major business entity type in Thailand so you can make an informed decision.
Ordinary Partnership
An ordinary partnership is the simplest business structure in Thailand. It requires two or more partners who share unlimited liability for the partnership's debts and obligations. Every partner is personally liable — meaning creditors can pursue your personal assets if the partnership cannot meet its obligations. The partnership is not a separate legal entity from its partners for liability purposes, though it is treated as a separate taxpayer.
Ordinary partnerships must register with the Department of Business Development within 30 days of formation. The registration requires the partnership agreement, partner information, and the business address. Tax-wise, the partnership files its own corporate income tax return, and partners are taxed on their share of distributed profits. This creates potential double taxation that makes the structure unattractive for profitable businesses.
For foreign entrepreneurs, ordinary partnerships are rarely the right choice. The unlimited personal liability is a significant risk, the foreign ownership restrictions under the Foreign Business Act still apply, and there is no pathway to the benefits available through BOI promotion. The structure is most commonly used by small, local businesses with Thai partners in non-restricted sectors.
Limited Partnership
A limited partnership offers a middle ground between the ordinary partnership and the limited company. It requires at least one general partner with unlimited liability and one or more limited partners whose liability is capped at their capital contribution. Limited partners cannot participate in the management of the business — doing so would convert them to general partners with unlimited liability.
Limited partnerships must register with the DBD and maintain a partnership agreement that clearly defines the roles and capital contributions of each partner. The structure provides some liability protection for limited partners, making it more attractive than an ordinary partnership for investors who want to participate financially without management responsibility.
From a foreign ownership perspective, limited partnerships face the same restrictions as other entity types under the Foreign Business Act. If the partnership is considered a foreign entity (foreign partners holding 50 percent or more), it cannot engage in restricted activities without an FBL. The limited partnership structure is uncommon for foreign investors and is typically used in specific local investment contexts.
Private Limited Company (Co., Ltd.)
The private limited company is by far the most common business structure for both Thai and foreign entrepreneurs in Thailand. Designated with the suffix Co., Ltd., it requires a minimum of two shareholders (increased from three under older regulations) and provides limited liability protection to all shareholders — your personal assets are shielded from the company's debts up to the amount of your share capital.
A private limited company is a separate legal entity that can own property, enter contracts, sue and be sued, and conduct business in its own name. The company is managed by directors appointed by the shareholders, and the Companies Act B.E. 2522 governs its formation and operation.
**Key features:** Shareholders' liability is limited to their unpaid share capital. The minimum number of shareholders is two. There is no maximum share capital, though the minimum paid-up capital depends on whether you need an FBL (2 million THB for a Thai company with foreign majority) or are applying for BOI promotion (varies by activity). The company must hold annual general meetings, file annual financial statements with the DBD, and maintain proper corporate records.
**Foreign ownership rules:** By default, a private limited company with 49 percent or less foreign ownership is considered a Thai company and can engage in most business activities without restriction. A company with more than 49 percent foreign ownership is considered a foreign company under the Foreign Business Act and is restricted from engaging in activities on Lists 2 and 3 without an FBL or BOI promotion.
This is where the interplay between company structure and regulatory pathways becomes critical. Most foreign entrepreneurs form a private limited company as the base entity and then seek either BOI promotion or an FBL to override the ownership restrictions. The BOI promotion route allows 100 percent foreign ownership in promoted sectors. The FBL route may require some Thai ownership depending on the restricted list category.
Public Limited Company (PLC)
A public limited company is designed for larger enterprises that intend to raise capital from the public, typically through listing on the Stock Exchange of Thailand. The PLC structure requires a minimum of 15 shareholders, at least 5 directors, and a minimum registered capital of 5 million THB with at least 50 percent paid up.
PLCs are subject to more stringent regulatory requirements than private limited companies, including mandatory disclosure of material information, quarterly financial reporting, and oversight by the Securities and Exchange Commission. The board of directors must include audit and remuneration committees, and there are restrictions on related-party transactions and director compensation.
For most foreign entrepreneurs, the PLC structure is not relevant unless you are establishing a large-scale operation with plans for public listing or significant capital raising. The regulatory burden and compliance costs are substantially higher than for a private limited company. However, if your business grows to the point where you are considering an IPO on the SET, converting from a private to a public limited company is a well-established process.
Joint Ventures
Joint ventures in Thailand take two forms: contractual joint ventures and incorporated joint ventures.
**Contractual joint venture** is not a separate legal entity. It is an agreement between two or more parties to collaborate on a specific project or business activity. Each party remains independently responsible for its own tax obligations, and the contractual JV agreement governs the parties' respective rights, responsibilities, and profit-sharing arrangements. Contractual JVs are common in construction, large project management, and temporary business collaborations.
**Incorporated joint venture** is a separate legal entity — typically a private limited company — formed by two or more parties specifically for the joint venture's business purpose. The incorporated JV provides limited liability protection and a clear corporate structure for the venture's operations. Most significant JVs involving foreign and Thai partners use the incorporated form because it provides clarity on ownership, governance, and profit distribution.
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For foreign investors partnering with Thai entities, the incorporated JV as a private limited company is the standard approach. The foreign partner's ownership percentage determines whether the JV is classified as a foreign or Thai company under the Foreign Business Act. Careful structuring of the ownership percentage is essential — 49 percent foreign ownership makes it a Thai company with unrestricted business access, while 50 percent or more triggers foreign company restrictions.
How BOI and FBL Layer on Top
Understanding how BOI promotion and the FBL interact with your chosen company structure is essential for foreign entrepreneurs.
**BOI promotion** applies to a private limited company (or PLC) and overrides the Foreign Business Act restrictions for promoted activities. You form a private limited company, apply for BOI promotion, and once approved, your company can be 100 percent foreign-owned and engage in the promoted activities without an FBL. The BOI also grants tax incentives, work permit facilitation, and land ownership rights that are not available through the base company structure.
**FBL** is obtained by a private limited company that wants to engage in restricted activities without BOI promotion. The FBL grants permission for specific activities but does not change the ownership structure or provide tax benefits. For List 2 activities, the FBL typically requires at least 40 percent Thai ownership.
Some companies pursue both — BOI promotion for their core promoted activity and FBL for supplementary restricted activities outside the BOI scope. This layered approach maximizes operational flexibility but requires careful compliance management.
Company Registration Process
Registering a private limited company in Thailand follows a defined sequence of steps. The entire process typically takes 7-14 business days if all documents are prepared correctly.
**Name reservation (1-3 days):** You submit up to three proposed company names to the DBD through their online system. The name must include the words Company Limited (or Co., Ltd.) and must not be identical or confusingly similar to existing registered names. Once approved, the name reservation is valid for 30 days.
**Memorandum of Association (1 day):** This document establishes the company's basic framework, including its name, objectives, registered capital, share structure, and initial shareholders. At least two subscribers must sign the MoA.
**Company formation meeting (1 day):** The promoters hold a statutory meeting to adopt the company's articles of association, appoint directors and an auditor, and finalize the share allocation.
**DBD registration (3-7 days):** The completed registration forms, MoA, articles of association, director and shareholder details, and registered address documents are submitted to the DBD. Once approved, the company receives its registration certificate and corporate tax ID.
Post-Incorporation Requirements
After registration, several additional steps are required before your company can operate fully.
**Bank account opening:** Open a corporate bank account using the company registration documents, directors' identification, and a board resolution authorizing the account opening. Most Thai banks require at least one director to appear in person.
**Tax ID registration (within 60 days):** The company must register for a corporate tax ID with the Revenue Department. This is typically done automatically during the DBD registration process, but you should verify that the tax ID has been issued correctly.
**VAT registration (when revenue reaches 1.8 million THB):** VAT registration is mandatory when your company's annual revenue reaches 1.8 million THB. You can register voluntarily before reaching this threshold, which may be beneficial for businesses that need to reclaim input VAT on purchases. The standard VAT rate is 7 percent (reduced from the statutory 10 percent).
**Social security registration (within 30 days of first hire):** When your company hires its first employee, you must register with the Social Security Office within 30 days. Both the employer and employee contribute 5 percent of wages (capped at 750 THB each per month) to the social security fund, which provides healthcare, disability, and retirement benefits.
Choosing the Right Structure
For most foreign entrepreneurs, the private limited company with either BOI promotion or FBL is the correct choice. The limited liability protection is essential, the structure is well understood by banks and government agencies, and it provides the most flexibility for future growth. The decision between BOI and FBL depends on your business activity, investment size, and timeline.
If your business qualifies for BOI promotion, pursue that route first. The tax savings and operational benefits are substantial. If BOI does not fit your business model, evaluate whether you need an FBL or whether you can structure your activities to avoid FBA restrictions entirely. The cheapest and fastest option is always to operate without triggering foreign ownership restrictions, which means staying below 49 percent foreign ownership or focusing on unrestricted activities.
Budget 30,000-100,000 THB for company registration (including legal fees) and 200,000-500,000 THB for BOI or FBL applications. Professional legal and accounting support from the start will save you far more than it costs.
