Exclusively for American Citizens & US Entities · 100% Ownership

US Treaty of Amity Company in Thailand

Only Available to American Investors

Under the Treaty of Amity and Economic Relations between Thailand and the United States of America, qualifying American citizens and US entities are entitled to establish and operate businesses in Thailand on terms equivalent to those available to Thai nationals — including majority or full ownership across most sectors.

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What is the US–Thai Treaty of Amity?

A bilateral trade treaty dating from 1966 that grants American investors rights unavailable to any other foreign nationality in Thailand

US Treaty of Amity Thailand — American company registration legal structure

The Treaty of Amity and Economic Relations between the Kingdom of Thailand and the United States of America was signed on 29 May 1966. It affords American citizens and US-registered entities a uniquely privileged status under Thai commercial law: the right to establish and operate businesses in Thailand on terms no less favourable than those accorded to Thai nationals.

In practical terms, this means that a qualifying US Treaty of Amity company may hold majority or full ownership of a Thai limited company and conduct business across most sectors — without the need to obtain a Foreign Business License and without being subject to the Foreign Business Act's general prohibition on majority foreign ownership.

For American entrepreneurs, executives, and corporations, the Treaty of Amity represents the most commercially advantageous and legally secure path to establishing a business presence in Thailand.

Eligibility Requirements for a US Treaty of Amity Company

Three fundamental criteria must be satisfied for a company to qualify under the Treaty of Amity

51%

Minimum American Shareholding

A minimum of 51% of the company's shares must be held by American citizens or a qualifying American entity — including a US sole proprietorship, partnership, representative office, branch office, joint venture, or limited company incorporated in the United States.

50%

Minimum American Directorship

A minimum of 50% of the company's board of directors must be American citizens. Where a director of a third nationality is appointed, that individual must co-sign all relevant instruments jointly with an American or Thai director.

100%

American Ultimate Beneficiary

The ultimate economic beneficiary of the company — the individual or entity that ultimately owns or controls the company and benefits from its profits — must be American. This requirement is assessed by both the US Embassy and the Department of Business Development.

Activities Excluded from the Treaty of Amity

The Treaty does not override Thai restrictions in the following six reserved categories.

Communications

Transportation

Fiduciary functions

Banking involving depository functions

Land ownership & exploitation of natural resources

Domestic trade in indigenous agricultural products

How a Treaty of Amity Company Compares to Other Foreign Ownership Structures

Understanding where the Treaty of Amity sits relative to the alternatives available to foreign investors.

US Citizens Only
Treaty of Amity Company
All Foreign Nationals
BOI / FBL Company
All Foreign Nationals
Standard Thai Ltd.
  Foreign ownership up to 100%
Foreign ownership up to 100% Max 49%
  Foreign Business License required
Foreign Business License required Not required Required Not required
  Sector restrictions
Sector restrictions 6 reserved categories only Conditional on FBL / BOI scope Full Foreign Business Act applies
  Subject to corporate income tax
Subject to corporate income tax 20% on net profit 20% (BOI exemptions available) 20% on net profit
  Work Permit ratio
Work Permit ratio 4 Thai : 1 Foreign 1 Thai : 1 Foreign (Branch/FBL) 4 Thai : 1 Foreign
  Typical registration timeline
Typical registration timeline 7–8 weeks 8–14 months (Branch/FBL) 7–14 weeks
  Eligible applicants
Eligible applicants American citizens & US entities only All foreign nationals All (but 51% Thai required)
  UnionSPACE service fee
UnionSPACE service fee From THB 215,000 From THB 168,000 – 320,000 From THB 33,500

For eligible American investors, a Treaty of Amity company offers majority or full ownership without the extended timelines and heightened scrutiny of a Branch Office or FBL application — making it the optimal structure for most US-citizen-led businesses in Thailand. UnionSPACE recommends a complimentary consultation to confirm suitability before proceeding.

How Much Does It Cost?

UnionSPACE's all-inclusive Treaty of Amity company registration service is priced at THB 215,000

This fee covers all professional fees, government filing fees, document preparation and translation, coordination with the US Commercial Service at the US Embassy Bangkok, Ministry of Commerce (DBD) filings, FBL Certificate (T.7) issuance, and all incidental expenses.

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Registered office address

A registered office address is required for company and VAT registration but is not included in the above fee; UnionSPACE provides a fully DBD and VAT-compliant registered address as a separate service. If you do not yet have an office, please enquire about our registered address packages.

Recommended minimum registered capital: THB 3,000,000

Only 25% (THB 750,000) is required to be paid up within the first financial year. A minimum of THB 2,000,000 in registered capital is required to sponsor a foreign Work Permit.

100% Money-Back Guarantee

Upon acceptance of your case, UnionSPACE will refund all fees paid if your US Treaty of Amity company application is rejected by the Department of Business Development (DBD). This guarantee reflects our confidence in the rigour of our preparation and the quality of every application we submit.

A precise, multi-stage process — managed entirely by UnionSPACE on your behalf

Step-by-Step: How to Register a US Treaty of Amity Company in Thailand

Thai Limited Company Formation

The first stage is the registration of a standard Thai private limited company with the Department of Business Development (DBD). UnionSPACE handles name reservation, preparation and filing of the Memorandum of Association, and collection of all company documents — company affidavit, certificate, shareholder list, and Articles of Association.

At this stage, the company is registered as a Thai limited company in the ordinary course. The Treaty of Amity conversion is applied for separately in the subsequent stages. This sequencing is mandated by the DBD's process requirements.

  • Documents required at this stage: notarised copies of passports of American majority shareholders.

Certificate of Qualification — US Commercial Service, US Embassy Bangkok

Once the Thai company is registered, the American majority shareholder(s) must attend in person at the US Commercial Service, US Embassy Bangkok to apply for the Certificate of Qualification — the official US government certification that the company qualifies under the Treaty of Amity.

This step cannot be delegated. The US Embassy does not permit agents or representatives to attend on behalf of the applicant. The American majority shareholder(s) must appear in person. UnionSPACE prepares all required documentation in advance and briefs the applicant fully before this appointment.

Documents required for the US Embassy application include notarised copies of the American shareholders' passports and the complete set of original Thai company documents (company certificate, objectives, MOA, Articles of Association, and shareholder list).

Ministry of Commerce Application & FBL Certificate (T.7) Issuance

With the Certificate of Qualification in hand, UnionSPACE submits the application to the Ministry of Commerce (DBD) to convert the Thai limited company into a Treaty of Amity company. Upon approval, the DBD issues the Foreign Business License Certificate (T.7) — the definitive document certifying the company's compliance with the Treaty of Amity and its entitlement to the Treaty's benefits.

UnionSPACE then collects the updated company documents from the Foreign Division of the Ministry of Commerce, reflecting the company's Treaty of Amity status. These documents are delivered to the client in both Thai and English.

Tax ID, VAT Registration & Corporate Bank Account

Following FBL (T.7) issuance, UnionSPACE registers the company with the Revenue Department for corporate income tax purposes and, where applicable, VAT. A DBD and VAT-compliant registered office address — with landowner approval letter and company signage — is required and provided as part of our registered address service.

UnionSPACE prepares all documentation required for corporate bank account opening and provides a formal letter of introduction to our partner bank. All authorised signatories must appear in person at the bank. Foreign signatories typically require a valid Work Permit before the bank will open the account.

  • Total timeline from instruction to bank account: approximately 7 to 8 weeks. Expedited completion within 14 business days where all documents are available.

What Is Included in the UnionSPACE Treaty of Amity Registration Package?

A complete breakdown of every deliverable included in the THB 215,000 all-inclusive fee

Company Name Search & Reservation
Drafting & Filing of Memorandum of Association (MOA) with DBD
Collection of Original Thai Company Documents from DBD
Document Preparation for Certificate of Qualification Application at US Embassy Bangkok
Application to Ministry of Commerce to Convert Thai Company to Treaty of Amity Status
Obtaining FBL Certificate (T.7) from DBD — Foreign Division
Collection of Updated Company Documents from DBD Foreign Division
Company Tax ID Registration with the Revenue Department
VAT Registration with the Revenue Department
English Version of All Company Incorporation Documents
Corporate Bank Account Document Preparation & Opening Assistance (THB & USD)
3 Months' Free Accounting & Tax Filing Service (Worth THB 22,500)
Registered Office Address (required — available as a separate add-on) Add-on

All fees quoted include government fees, professional fees, and out-of-pocket expenses. Prices are quoted in Thai Baht (THB) and are subject to VAT where applicable. Registered capital and the cost of a registered office address are not included in the service fee.

Key Legal & Regulatory Parameters of a Treaty of Amity Company

A structured reference summary for American investors considering this structure

Eligible Applicants American citizens and US-incorporated entities (sole proprietorship, partnership, branch, representative office, joint venture, or limited company in US territory)
Minimum American Shareholding 51% of all shares must be held by qualifying American citizens or US entities
Minimum American Directorship 50% of the board of directors must be American citizens
Foreign Business License Not required for most activities. The FBL Certificate (T.7) from the DBD certifies Treaty of Amity compliance and replaces the need for a standard FBL
Permitted Business Activities All sectors except the six reserved categories (communications, transportation, fiduciary functions, banking with depository functions, land / natural resources, domestic indigenous agricultural trade)
Corporate Income Tax 20% on net profit. Tax treaty relief may be available under the Thailand–US Double Taxation Agreement
Work Permit Ratio Standard 4:1 Thai-to-foreign employee ratio applies. Minimum THB 2,000,000 registered capital, VAT registration, and social security payments required to sponsor a Work Permit
Minimum Recommended Capital THB 3,000,000. Only 25% paid up within the first financial year. THB 2,000,000 required to sponsor a foreign Work Permit
US Embassy Attendance The American majority shareholder(s) must personally attend the US Commercial Service at the US Embassy Bangkok to obtain the Certificate of Qualification. This step cannot be delegated to an agent
Registration Timeline Approximately 7 to 8 weeks for the complete process. Expedited completion within 14 business days where all documents are available
Money-Back Guarantee 100% refund of all fees paid if the DBD rejects the application, upon confirmation of case acceptance by UnionSPACE

Why American Investors Choose UnionSPACE

Expertise, transparency, and an unconditional commitment to your outcome

100% Money-Back Guarantee

We back every Treaty of Amity application with a full refund guarantee — because our confidence in our process is unconditional.

Fastest in Thailand

We have completed Treaty of Amity registrations in as few as 14 business days where all documents are in order from the outset.

Fixed, All-Inclusive Fees

THB 215,000 covers everything. No hidden government fee add-ons. No surprises. Our quoted price is your final price.

Multilingual Team

Native English-speaking advisors with deep knowledge of both US and Thai legal requirements. Serving clients across Bangkok, Phuket, Pattaya, and beyond.

Related & Post-Registration Services

Everything your Treaty of Amity company needs to operate in full compliance after registration

Accounting & Tax Reporting

Starts from THB 8,500 per month

Work Permit Preparation & Application

For only THB 38,000

Non-Immigrant "B" Visa Preparation & Application

Starts from THB 42,000

VAT Registration

For only THB 8,000

Trademark Registration

For only THB 40,000 per category

DBD-Compliant Registered Office Address

Contact us for pricing

Frequently Asked Questions — US Treaty of Amity Company in Thailand

Authoritative answers to the questions most commonly raised by American investors

The Treaty of Amity and Economic Relations between the Kingdom of Thailand and the United States of America, signed in 1966, grants American citizens and US entities the right to establish and operate businesses in Thailand on terms equivalent to those available to Thai nationals. In practice, this means qualifying American-owned companies may hold majority or full ownership of a Thai limited company and conduct business across most sectors — without obtaining a Foreign Business License and without being restricted by the Foreign Business Act's general prohibition on majority foreign ownership. No equivalent bilateral privilege is available to any other foreign nationality under Thai law.

The complete process — from initial company formation through to FBL Certificate (T.7) issuance and corporate bank account opening — takes approximately 7 to 8 weeks. Where all required documents are available and in order from the outset, UnionSPACE has completed the full process within 14 business days. The principal timeline variable is the scheduling of the US Embassy appointment for the Certificate of Qualification.

No. A Treaty of Amity company is not exempt from the standard 4:1 Thai-to-foreign employee Work Permit ratio. To sponsor a Non-Immigrant B Visa and Work Permit for a foreign national, the company must: employ at least four Thai nationals, register for VAT, hold a minimum registered capital of THB 2,000,000, and remit social security contributions for all Thai employees. An exception applies to holders of a one-year visa extension based on marriage to a Thai national, who require only two Thai employees and THB 1,000,000 in registered capital.

The US Commercial Service requires the following at the Embassy appointment: (1) notarised copies of the passports of the American majority shareholders (notarised by a US Notary Public or the US Embassy/Consulate in Thailand); and (2) a complete original set of the Thai limited company documents, including the Certificate of Company Registration, Company Objectives, Memorandum of Association, Articles of Association, and List of Shareholders. UnionSPACE prepares and assembles all documentation in advance and provides a full briefing before the appointment.

Yes. A US-incorporated entity — including a limited liability company, corporation, partnership, or other qualifying business entity — may serve as the majority shareholder, provided the entity is incorporated and located in US territory and the ultimate beneficiary of the entity is American. The requirements as to American majority shareholding and directorship must still be satisfied at the level of the Thai company. UnionSPACE advises on the optimal shareholding structure depending on the client's corporate circumstances.

Yes. Thai nationals may serve as directors of a Treaty of Amity company. The requirement is that a minimum of 50% of the board must be American citizens. Where a director of a third nationality (neither American nor Thai) is appointed, that director must co-sign all company instruments, resolutions, and relevant legal documents jointly with an American or Thai co-director.

UnionSPACE offers a full refund of all fees paid in the event that the Department of Business Development (DBD) rejects the Treaty of Amity company application. The guarantee is activated upon UnionSPACE's formal acceptance and confirmation of the client's case — at which point we have assessed the eligibility of the applicant and the completeness of the documentation. The guarantee reflects our confidence in the rigour of our application preparation and the quality of every submission we make on behalf of our clients.

Despite its extensive scope, the Treaty of Amity does not extend to six categories of activity that remain reserved for Thai-majority-owned businesses: (1) communications; (2) transportation; (3) fiduciary functions; (4) banking involving depository functions; (5) land ownership and exploitation of land or other natural resources; and (6) domestic trade in indigenous agricultural products. All other business activities are generally accessible to a Treaty of Amity company on the same terms as Thai nationals.

What Our Clients Say

UnionSPACE 4.9-star Google rating — US Treaty of Amity company Thailand
Arun — UnionSPACE company incorporation client

"It was a breeze dealing with the UnionSPACE team. They removed all the complexity of starting a business in Thailand and made it simple for me and my family."

Arun
Emily — UnionSPACE foreign company registration Thailand

"Thank you for your fast and transparent advice on company setup in Thailand. Great English-speaking team too."

Emily
Julie — UnionSPACE company and VAT registration client

"I love the way you always put the customer first. Thanks for making company setup so easy and keeping me updated throughout the process."

Julie
Complimentary — This Month Only

Free 3-Month Accounting & Tax Reporting Service

Included with your Treaty of Amity company registration package

Worth THB 22,500

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Email

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