Can a Treaty of Amity company be 100% U.S. owned?

Potentially, yes. A qualifying investor and eligible business activity may use a majority or wholly U.S.-owned structure. Eligibility depends on ownership and control evidence, governance, proposed activities and completion of the required official processes.

Does the Treaty permit every type of business?

No. The Treaty has express exclusions, and other sector-specific Thai laws may also apply. The proposed business activities should be reviewed before incorporation.

U.S. investor company structuring · Thailand

Can you own 100% of your Thailand company?

If you are a U.S. citizen or qualifying U.S.-owned business, the U.S.–Thailand Treaty of Amity may support majority or full American ownership for many business activities in Thailand.

UnionSPACE helps American investors check eligibility, assess the proposed business activity, structure the Thai company and coordinate the professional work around the Treaty process.

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Majority / 100% U.S. Ownership Potential Bangkok-Based Team Company Setup & Ongoing Compliance

Independent private-sector advice. UnionSPACE is not the U.S. Commercial Service, Thailand Department of Business Development or another government authority. Official certification and registration decisions remain with the responsible authorities.

UnionSPACE U.S.-Thailand Treaty of Amity business advisory in Bangkok

Bangkok-Based AdvisoryLocal company and regulatory support

American Investor FocusOwnership, activity and structure review

Multilingual TeamSupport across corporate and operational matters

Beyond IncorporationOffice, accounting, tax and compliance support

30-second eligibility check

Could the Treaty of Amity work for your business?

The best first step is not incorporation. It is checking whether the proposed ownership and actual business activities fit the Treaty framework.

You may be a candidate if:

You are a U.S. citizen or are investing through a qualifying U.S.-owned entity
You want majority or potentially 100% American ownership of the Thai company
Your proposed activity is not within an excluded Treaty sector
You intend to establish and operate a genuine business in Thailand

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Why investors consider the Treaty

A powerful ownership route for qualifying American businesses

Majority or Full U.S. Ownership

Qualifying investors may be able to hold majority or 100% ownership of the Thai company for eligible activities.

National Treatment

The Treaty can provide qualifying U.S. businesses national-treatment protection for many commercial activities.

Cleaner Ownership Structure

A qualifying structure can avoid relying on a Thai shareholder merely to satisfy the normal foreign-ownership threshold.

Operate a Real Thailand Business

Use the structure as part of a genuine Thailand operating company, subject to the applicable activity and other Thai laws.

Check Whether My Business Qualifies

Recognize your business

What kind of company are you planning in Thailand?

The Treaty can be relevant across many business models, but the exact revenue-generating activities must be checked before the corporate objectives are fixed.

Consulting & Business Services

Advisory, management, corporate and support services, subject to the actual activity.

Technology & Software

Software, digital services, IT and technology-based business models.

Trading & Distribution

Import, export, wholesale, distribution and product-related business models require activity-specific review.

Manufacturing & Products

Production, assembly and product businesses may involve additional factory, product or sector requirements.

Hospitality & Management

Management and service activities should be separated from any regulated or excluded underlying activity.

Regional & Group Support

Group services, coordination and regional functions can be reviewed against the intended Thailand activities.

Important limitation

Some activities are not covered by Treaty protection.

The Treaty does not provide unrestricted access to every sector. The proposed activity should be classified before incorporation and before major commercial commitments are made.

Communications
Transportation
Fiduciary functions
Banking involving depository functions
Exploitation of land or other natural resources
Domestic trade in indigenous agricultural products

Other sector-specific Thai laws may also apply. Land ownership is governed separately and is not presented as a Treaty benefit.

Send Us My Business Activity

Structure before incorporation

Don't incorporate first and discover the activity does not fit later.

Treaty eligibility depends on more than nationality. Ownership, beneficial control, directors, signing authority and the exact activities of the Thai company need to tell the same story.

We review those issues before the company structure is fixed so that avoidable restructuring, amendments or delays can be reduced.

Proposed shareholders and ownership chain
Beneficial ownership and control
Board and authorised director structure
Revenue-generating and supporting activities
Capital, staffing and Thailand operating plan
Separate licences or regulatory requirements that may apply

Check My Proposed Structure

How it works

Eligibility first. Structure second. Official review follows.

UnionSPACE provides private advisory, preparation and coordination. The responsible U.S. and Thai authorities independently review and decide the official stages.

Check Eligibility

Tell us the owners, directors and what the Thailand company will actually do. We identify the main Treaty eligibility questions and exclusions.

Structure & Prepare the Company

We map the ownership, governance and business activities into a workable Thailand corporate structure and identify the documents required.

Certification & Thai Registration Coordination

Where included in the engagement, we coordinate agreed preparation around the U.S. certification stage and the Foreign Business Certificate process in Thailand. Each authority controls its own review and outcome.

Start With an Eligibility Check

UnionSPACE advantage

Set up the company. Then actually operate it.

Treaty qualification is only one part of entering Thailand. UnionSPACE can continue supporting the company after incorporation so you do not need to rebuild a local support team for every next step.

Company Incorporation

Corporate setup, registrations and agreed company changes.

Registered Office & Workspace

Business address, serviced office and physical workspace options.

Accounting & Tax

Bookkeeping, tax filings and recurring company compliance support.

Visa & Work Permit Support

Separate immigration and work-authorisation support where applicable.

Corporate Compliance

Ongoing statutory, corporate and operational support.

Local Business Support

One Bangkok-based team to help coordinate the practical implementation around your Thailand company.

Clear responsibilities

We assess and coordinate. Authorities certify and decide.

UnionSPACE can assess the business model, coordinate professional support and prepare agreed documentation. We do not certify U.S. nationality, grant Treaty status or issue a Foreign Business Certificate.

We do not guarantee approval, official processing time or a particular government outcome. Evidence requirements, fees, review periods and decisions remain under the control of the responsible authorities.

Treaty status does not itself provide land ownership, a corporate bank account, a visa, work permit, product licence or sector-specific permission. Those matters require separate assessment.

Common questions

What American investors usually want to know first

Can an American own 100% of a Thai company?

Potentially, yes. A qualifying investor and eligible business activity may use a majority or wholly U.S.-owned structure under the Treaty framework. The ownership and control evidence, governance, proposed activities and required official processes must still be satisfied.

What businesses can qualify under the Treaty of Amity?

Many commercial activities may potentially use the Treaty route, but the exact business model must be reviewed against the Treaty exclusions, the Foreign Business Act and any sector-specific Thai law.

Which activities are excluded?

Communications, transportation, fiduciary functions, depository banking, exploitation of land or natural resources, and domestic trade in indigenous agricultural products are among the express exclusions. Other regulated activities can also require separate permissions.

Can a U.S. company own the Thai company?

Potentially. Where a U.S. corporate shareholder is used, the ownership and control chain needs to be supported with appropriate evidence and reviewed against the applicable requirements.

Does the U.S. certification stage complete the process?

No. U.S. Commercial Service certification and the Foreign Business Certificate process in Thailand are separate official stages. Each authority independently determines its requirements and outcome.

Does Treaty status include a visa or work permit?

No. A foreign shareholder, director or employee who will work in Thailand must separately satisfy the applicable immigration and employment requirements.

How long does the process take?

Timing depends on the ownership structure, document readiness, business activity and official processing. We can provide a working implementation estimate after reviewing the case, but official processing periods are not guaranteed.

Official references

Confirm current requirements at the source.

For primary-source background, review the Treaty text published by the U.S. Department of Commerce and the Department of Business Development's Foreign Business Act guidance.

External authority websites and documents are maintained by their respective publishers. Requirements should be confirmed for the particular case.

Start here

Find out whether the Treaty of Amity may work for your Thailand business.

Send us a short description of the proposed business. We can start by identifying the ownership and activity questions that should be resolved before incorporation.

Helpful information to send us

Are you a U.S. citizen or investing through a U.S. company?
What will the Thai company do?
Who will own the Thai company?
Do you already have a Thailand company?
When do you want to start?

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Call (+66) 02 036 0600 · Monday–Friday, 9:00–18:00 Bangkok time.

Private advisory disclosure: UnionSPACE is not a U.S. or Thai government authority and does not issue Treaty certification or Foreign Business Certificates.