How to Open a Business in Thailand

Complete Guide for Foreigners (2026)

Requirement

Ownership Structure

Process

Total Fee

Can Foreigners Own a Business in Thailand?

Foreigners can start a business in Thailand by having a Thai partner and registering a Thai limited company (49%-51%) with the Department of Business Development. However, to obtain majority foreign ownership(>50%), it is regulated under the Foreign Business Act, which may require a Foreign Business License (FBL), BOI promotion, or a Thai majority shareholder, depending on the type of business.

Navigate Thailand’s Complex Business Registration Laws with Guidance

Many foreigners arrive in Bangkok with ambitious business plans, only to discover that foreign ownership restrictions under the Foreign Business Act (FBA) create unexpected obstacles. The Foreign Business Act limits non-Thai nationals from operating in certain business sectors without proper licensing, while capital requirements and shareholder structures demand careful planning from day one.

Choosing between each approach isn’t straightforward. Each option carries different implications for foreign businesses regarding control, tax obligations, and the ability to employ foreign employees. A US citizen starting a business faces different considerations than entrepreneurs from treaty countries or those seeking venture capital investment.

The cost of mistakes during company registration extends far beyond money. Improper documentation delays your launch, incorrect company structure limits your ability to raise capital, and compliance failures with the Revenue Department create ongoing headaches. Proper guidance from experienced professionals transforms this complex process into a manageable path toward your Thai business goals.

In this article, we will share a practical, step-by-step guide to opening a company in Thailand.

Types of Company Formation Approaches in Thailand

Foreign investors looking to start a business in Thailand typically choose from several legal approaches depending on their ownership goals, industry, and long-term investment plans. While the most common legal entity in Thailand is a Thai limited company, the ownership structure and regulatory approval can vary significantly depending on whether foreigners intend to hold majority control of the business.

Foreign participation in Thai businesses is primarily regulated under the Foreign Business Act (FBA), which restricts foreign participation in certain industries. As a result, foreign entrepreneurs must carefully select the appropriate company formation approach that aligns with both their operational needs and the legal framework.

In practice, most foreign investors establish their businesses through one of the following approaches.

1. Thai Majority Company (Thai Limited Company – 51% Thai Ownership)

The most common approach for foreigners starting small or service-based businesses in Thailand is forming a Thai majority limited company.

Under this structure:

Thai shareholders hold at least 51% of the company shares
Foreign shareholders may hold up to 49%
The company is legally treated as a Thai company

Because the business is considered Thai, it can operate in most sectors that would otherwise be restricted to foreigners under the Foreign Business Act.

This structure is commonly used for:

Restaurants and cafes
Consulting businesses
Trading companies
Small service companies

In most cases, if foreign ownership exceeds 50%, the company is legally classified as a “foreign company” under the Foreign Business Act and may require a Foreign Business License to operate certain types of businesses.

However, investors must ensure that Thai shareholders are genuine partners and not nominee shareholders acting on behalf of foreigners, as nominee structures are illegal under Thai law.

2. Foreign Majority Company with Foreign Business License (FBL)

Foreign investors who want to maintain majority ownership (more than 50%) may apply for a Foreign Business License (FBL) from the Department of Business Development under the Ministry of Commerce.

An FBL allows foreigners to operate businesses that are otherwise restricted under the Foreign Business Act, particularly businesses classified under List 3, which includes many service industries.

Examples include:

IT consulting and software services
business advisory services
engineering or technical consulting
certain professional service businesses

Obtaining an FBL requires the applicant to demonstrate that the business will provide economic benefits to Thailand, such as technology transfer, employment creation, or investment in specialized expertise.

In many cases, the government expects the business to demonstrate sufficient investment, typically with a minimum capital of at least 3 million THB per restricted business activity.

The approval process typically takes 3 to 6 months and involves review by the Foreign Business Committee.

3. BOI-Promoted Company (Board of Investment Promotion)

For technology companies, manufacturing projects, and innovation-driven businesses, applying for investment promotion from the Thailand Board of Investment (BOI) is often the most advantageous option.

A BOI-promoted company allows:

100% foreign ownership
corporate tax incentives
exemption or reduction of import duties
simplified visa and work permit procedures

BOI promotion is typically granted to businesses that contribute to Thailand’s economic development, particularly in sectors such as:

software development and digital technology
advanced manufacturing
renewable energy
research and development
logistics and smart electronics

The Thailand Board of Investment (BOI) provides investment promotion incentives for projects that contribute to Thailand’s economic development.

The approval process typically takes 3 to 6 months and involves review by the Board of Investment Committee.

4. Treaty of Amity Companies (For U.S. Investors)

United States citizens and companies may benefit from the U.S.–Thailand Treaty of Amity, which allows American investors to hold 100% ownership in most business sectors in Thailand.

Companies registered under the Treaty of Amity enjoy national treatment similar to Thai companies, although certain industries remain restricted, including:

communications and media
transportation
land ownership
natural resource exploitation

To qualify, the company must be majority-owned by U.S. citizens or American companies, and certification must be obtained through the U.S. Commercial Service and the Thai Ministry of Commerce.

Choosing the Right Approach

Selecting the correct company formation approach depends on several factors, including:

The industry in which the business will operate
the desired level of foreign ownership
capital investment plans
long-term expansion goals in Thailand

In the next section, we will explain how the Foreign Business Act categorizes restricted industries and how foreign investors can determine whether their business requires a Foreign Business License or other regulatory approval.

Approach	Foreign Ownership	Best For
Thai Majority Company	Up to 49%	SMEs and service businesses
Foreign Business License	Up to 100%	Consulting and professional services
BOI-Promoted Company	Up to 100%	Technology and manufacturing high investment business
Treaty of Amity	Up to 100%	U.S. investors

Company Registration Process in Thailand for Foreigners

Registering a company in Thailand involves several legal and regulatory steps, particularly for foreign investors who must comply with the Foreign Business Act and ownership regulations. The process typically includes defining the business activity, determining the appropriate ownership structure, obtaining any required licenses, and registering the company with the Department of Business Development (DBD).

Step 1 — Define the Actual Business Activity

First, determine exactly what the company will do, because FBA classification depends on the activity.
Example categories:

Trading, retail, or wholesale
Software development
Consulting services
Manufacturing
Restaurant or hospitality businesses
Online marketplaces or digital platforms

Step 2 — Check Whether the Business Is Restricted Under the Foreign Business Act

Three Categories of Restricted Businesses according to the FBA
The law divides restricted activities into 3 lists.
List 1 — Completely Prohibited to Foreigners
List 2 — Businesses Affecting National Security or Culture
List 3 — Businesses Requiring a Foreign Business License

List 1 — Completely Prohibited to Foreigners
Foreigners cannot operate these businesses at all.
Examples:

Media businesses (TV, radio, press)
Rice farming or agriculture
Forestry
Fishing in Thai waters
Thai herbal extraction
Trading Thai antiques
Land trading

List 2 — Businesses Affecting National Security or Culture
Foreigners may operate only with Cabinet approval and a special license.
Examples:

Media businesses (TV, radio, press)
Rice farming or agriculture
Forestry
Fishing in Thai waters
Thai herbal extraction
Trading Thai antiques
Land trading

Additional requirement:

At least 40% Thai shareholding
Minimum 2/5 Thai directors

List 3 — Businesses Where Thai Businesses Need Protection
Foreigners can operate only if they obtain a Foreign Business License (FBL) from the Department of Business Development.
Examples:

Accounting services
Legal services
Engineering or architecture
Construction
Retail and wholesale (below certain capital thresholds at 100M THB)
Advertising
Hotel operations
Restaurants
Tour operations
General service businesses

For restricted businesses under List 3, the minimum capital is typically 3 million THB per licensed activity.

Step 3 — Decide the Appropriate Ownership Structure

Once the business activity has been identified and checked against the Foreign Business Act (FBA) restrictions, the next step is selecting the appropriate ownership structure for the company.

As discussed in the previous section, foreign investors in Thailand typically choose one of several formation approaches depending on their ownership goals and the regulatory requirements of the business sector.

The most common approaches include:

Thai majority limited company, where Thai shareholders hold at least 51% of the shares
Foreign Business License (FBL) structure, allowing foreigners to hold majority ownership in certain restricted businesses
A BOI-promoted company, which may permit up to 100% foreign ownership for promoted industries
Treaty of Amity Company, available for U.S. investors under the U.S.–Thailand Treaty of Amity

Each structure carries different implications for foreign ownership, regulatory approval, capital requirements, and operational flexibility. For example, a Thai majority company can often be established more quickly, while BOI promotion may provide tax incentives and greater foreign ownership rights but requires government approval.

At this stage, investors should evaluate several factors before deciding on the structure, including:

The type of business activity
The desired level of foreign ownership
Long-term investment and expansion plans
Licensing requirements under Thai law

Choosing the right ownership structure early in the process helps prevent delays during company registration and ensures that the business can operate legally under Thai regulations.

Once the ownership structure has been determined, the next step is to ensure that the company meets the minimum capital requirements for foreign-invested businesses in Thailand.

In many cases, we recommend that shareholders initially register the company as an individual shareholder rather than through a foreign parent company.

If a parent company is included as a shareholder during the initial registration, the Department of Business Development (DBD) may require detailed documentation for every shareholder of the parent company. This additional verification process can significantly delay the company registration process.

For this reason, many investors choose to register the company with individual shareholders first and later transfer the shares to the parent company after the company has been successfully established.

Step 4 — Plan for Legal Compliance Requirements

Before proceeding with company registration, foreign investors should carefully plan the operational structure of the business to ensure that it meets Thailand’s legal and regulatory requirements. This planning stage is particularly important for companies that intend to employ foreign staff or directors.

In Thailand, the ability for a company to sponsor work permits for foreign employees depends on several regulatory factors, including registered capital, the number of Thai employees, and social security compliance. Proper planning at this stage helps prevent delays during work permit applications and ensures that the business structure aligns with Thai labor and immigration regulations.

Work Permit and Employment Compliance

Foreign-owned companies that wish to employ foreign staff must comply with Thailand’s work permit and immigration regulations administered by the Department of Employment.
In most cases, companies must meet the following conditions:

Maintain sufficient registered capital to support foreign employees, typically 2 million THB per foreign employee
Hire Thai employees to meet work permit ratio requirements, generally four Thai employees for every foreign employee
Register all eligible employees under the Thai Social Security system

These requirements are commonly reviewed when applying for work permits and business visas for foreign staff.

After the company has been registered and becomes operational, the employer can apply for work permits and long-term visas for foreign directors or employees who will be working in Thailand.

Because immigration and labor regulations may change over time, it is advisable for companies to consult experienced professionals to ensure their employment structure remains fully compliant with Thai labor and immigration laws.

Why Early Planning Matters

Planning these requirements before registering the company helps ensure the business has sufficient capital, staffing, and administrative preparation to legally support foreign employees.

Without proper planning, companies may encounter delays when applying for work permits, registering employees with the Social Security Administration, or expanding their operations in Thailand.

Step 5 — Register the Company

No.	Step	Typical Timeframe
1	Reserve company name	1 day
2	Company registration with DBD	2–4 weeks
3	BOI or FBL approval (if required)	2–6 months
4	VAT registration	1-2 weeks
5	Open a corporate bank account	14 days after company registration
6	Hiring staff to comply with foreign work permit requirements	Dependence on the hiring period
7	Work permit application	4 – 6 Months

Step 6 — Compliance Requirements After Company Setup

Registering a company is only the beginning of operating a business in Thailand. Once the company is established, foreign-owned businesses must comply with ongoing legal, accounting, and employment obligations to remain in good standing with Thai authorities.

These compliance requirements generally fall into three main areas: accounting and financial reporting, tax compliance, and employment regulations.

Accounting and Financial Reporting

All companies registered in Thailand are required to maintain proper accounting records in accordance with Thai accounting standards.

Businesses must keep accurate documentation of financial transactions, including:

sales invoices and receipts
purchase invoices and expense records
payroll documentation
bank statements and financial records

Companies are also required to prepare annual financial statements, which must be audited by a licensed Thai auditor and submitted to the Department of Business Development (DBD).

Because Thai accounting and reporting requirements can be complex for foreign entrepreneurs, many companies engage a professional accounting firm to manage bookkeeping, financial reporting, and statutory filings. This helps ensure that the company remains compliant with local regulations while allowing business owners to focus on operations.

Tax Compliance

Companies operating in Thailand must comply with several tax obligations administered by the Revenue Department.

Corporate income tax is filed twice per year:

Mid-year corporate income tax filing (based on estimated profits)
Annual corporate income tax filing (based on the audited financial statements)

In addition, companies registered for Value Added Tax (VAT) must submit VAT filings every month, even if there is no taxable activity during that period.

Depending on the nature of the business, companies may also be required to handle:

withholding tax filings
payroll tax obligations for employees
social security contributions

Maintaining proper tax compliance is critical, as late filings or incorrect tax reporting may result in penalties or additional tax assessments.

Maintaining Long-Term Compliance

Maintaining proper compliance after company registration is essential for a business’s long-term success in Thailand. Companies that keep accurate financial records, file taxes on time, and comply with employment regulations will avoid legal risks and maintain a stable operating environment.

For many foreign investors, working with experienced accounting, legal, and corporate advisory professionals helps ensure that all regulatory requirements are properly managed as the business grows.

Cost of Starting a Business in Thailand

The cost of starting a business in Thailand varies depending on several factors, including the company structure, regulatory requirements, and whether the business requires special licensing such as a Foreign Business License (FBL) or BOI investment promotion.

For most foreign investors, the initial costs generally include company registration fees, legal or consulting support, accounting setup, and work permit processing. In addition to these administrative expenses, companies must also meet minimum capital requirements to comply with Thai regulations.

The following table provides a general overview of the typical costs involved when establishing a company in Thailand.

Item	Estimated Cost
Legal or consulting service fees	20,000 – 80,000 THB
Foreign Business License or BOI application (if required)	150,000 – 500,000 THB
Accounting system setup and initial bookkeeping (Monthly fee)	10,000 – 30,000 THB
Work permit processing for foreign employees	20,000 – 40,000 THB

These figures represent typical market ranges and may vary depending on the complexity of the business, the number of shareholders involved, and the type of regulatory approvals required.

Capital Requirements for Foreign-Owned Businesses

In addition to setup costs, foreign-owned businesses must also comply with minimum capital requirements prescribed by Thai law.

For most businesses involving foreign employees, companies are generally expected to maintain:

At least 2 million THB in registered capital per foreign employee
Sufficient operational capital to support the business activities

For businesses that require a Foreign Business License under List 3 of the Foreign Business Act, the minimum capital requirement is typically 3 million THB per licensed business activity.

It is important to note that registered capital does not always need to be deposited immediately at the time of company registration, but it must be brought into Thailand according to the schedule specified by the relevant authorities.

Planning Your Startup Budget

When planning to start a business in Thailand, investors should consider both the initial setup costs and the operational capital required during the first year of operation. Proper financial planning helps ensure that the company can meet regulatory requirements, support staffing needs, and maintain stable operations while the business grows.

In many cases, consulting with experienced professionals can help investors estimate the true cost of company formation and avoid unexpected expenses during the registration process.

Common Mistakes Foreigners Make When Starting a Business in Thailand

Starting a business in Thailand offers many opportunities for foreign investors, but the process also involves navigating a complex legal and regulatory environment. Many entrepreneurs encounter difficulties not because their business idea is weak, but because they misunderstand the legal requirements involved in company formation and operation.

Below are some of the most common mistakes foreigners make when setting up a business in Thailand.

Choosing the Wrong Ownership Structure

One of the most frequent mistakes is selecting an inappropriate ownership structure without fully understanding the restrictions under the Foreign Business Act (FBA).

Some investors assume they can freely register a company with majority foreign ownership. However, once foreign shareholding exceeds 50%, the company is legally classified as a foreign business and may require additional approval, such as a Foreign Business License (FBL) or BOI promotion.

Failing to select the correct structure at the beginning can lead to delays, additional legal costs, or the need to restructure the company after registration.

Using Nominee Shareholders

Another common mistake is attempting to bypass foreign ownership restrictions by using nominee shareholders.

In some cases, foreigners ask Thai individuals to hold shares on their behalf while maintaining full control of the business. However, this practice is considered illegal under Thai law and may result in serious penalties, including fines or forced restructuring of the company.

Thai authorities have increased scrutiny of nominee arrangements in recent years, making it essential for investors to ensure that all shareholders are legitimate partners with real ownership interests.

Not Planning Work Permit Requirements

Foreign investors often underestimate the requirements for obtaining work permits for foreign employees.
In most cases, companies must maintain:

sufficient registered capital to support foreign staff
The required ratio of Thai employees to foreign employees
proper social security registration for staff

Failure to plan for these requirements early can prevent companies from successfully obtaining work permits, which may limit foreign founders’ ability to legally work in their own businesses.

Poor Tax and Accounting Planning

Another common issue is neglecting the importance of proper accounting and tax compliance from the beginning.

Thai companies are required to maintain accurate accounting records, file taxes regularly, and submit audited financial statements each year. Without a structured accounting system, businesses may struggle to comply, leading to penalties or complications with the Revenue Department.

Engaging professional accounting support early in the process helps ensure that the company remains compliant with Thai financial regulations.

Underestimating Regulatory Complexity

Finally, many foreign investors underestimate the complexity of Thailand’s regulatory environment.
Starting a business in Thailand typically involves interacting with multiple government agencies, including:

The Department of Business Development (DBD) for company registration
The Revenue Department for tax compliance
The Department of Employment for work permits
The Social Security Office for employee registration

Without a clear understanding of how these systems work together, the company registration process can become time-consuming and confusing.

Most of these challenges can be avoided through proper planning and a clear understanding of Thai regulations. By carefully selecting the right ownership structure, preparing documentation correctly, and ensuring compliance with employment and tax requirements, foreign investors can significantly reduce the risks involved in establishing a business in Thailand.

In the next section, we will explain how working with experienced corporate consultants can help simplify the company formation process and ensure full compliance with Thai law.

Why Work With a Corporate Consultant

Establishing a business in Thailand can be a rewarding opportunity, but the process involves navigating multiple regulatory frameworks, government agencies, and compliance requirements. Foreign investors must understand the Foreign Business Act, company registration procedures, tax regulations, and work permit rules before launching their operations.

While it is possible to complete some steps independently, many entrepreneurs find that working with experienced corporate consultants helps simplify the process and avoid costly mistakes during company formation.

Navigating Thailand’s Regulatory Environment

Starting a company in Thailand often requires interaction with several government authorities, including:

the Department of Business Development (DBD) for company registration
the Revenue Department for tax registration and compliance
the Department of Employment for work permits
the Social Security Office for employee registration
the Board of Investment (BOI) for investment promotion projects

Each authority has its own documentation requirements and regulatory procedures. Understanding how these systems interact can be challenging for foreign investors who are unfamiliar with the Thai legal framework.

Corporate consultants help coordinate these processes and ensure that the company structure, licensing requirements, and documentation comply with Thai regulations.

Services Corporate Consultants Typically Provide

Professional corporate consulting firms often provide a range of services to support foreign investors, including:

Company registration and corporate structuring
Foreign Business License (FBL) applications
BOI Investment Promotion Advisory
Accounting system setup and tax compliance
Work permit and visa processing
Ongoing corporate compliance support

By working with professionals who understand Thailand’s regulatory system, businesses can avoid common mistakes and establish their operations more efficiently.

Benefits of Professional Guidance

Working with experienced corporate consultants provides several advantages, such as:

Reducing delays during company registration and licensing processes
ensuring compliance with Thai corporate and tax regulations
selecting the most appropriate ownership structure from the beginning
helping foreign investors focus on building and growing their business

Proper planning and professional guidance can significantly reduce the risks associated with establishing a company in a new regulatory environment.

Planning Your Business Setup

For many foreign entrepreneurs, the most effective approach is to work with advisors who can guide them through each stage of the process—from selecting the appropriate company structure to completing the required regulatory registrations.

With the right preparation and support, investors can navigate Thailand’s regulatory environment more efficiently and establish a stable foundation for long-term business operations.

If you are planning to start a business in Thailand, consulting with experienced professionals can help ensure that your company is structured correctly and fully compliant with Thai law from the beginning.

Service Inquiry Contact

Greenpro KSP Group

Address: 43 Thai cc tower, Room 111, Sathon Road, Yan Nawa, Sathon, Bangkok 10120

Telephone: 094 864 9799

LINE Official Account: @greenproksp

E-mail: info.th@greenproksp.com