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US–Thailand Treaty of Amity

Review US investor eligibility, ownership, business activities and foreign business certification under the Treaty of Amity; not every activity is covered.

Incorporating a company with US investors and obtaining treaty-based permission are separate tasks. Start with the ownership chain and actual revenue-generating activities, rather than a package described as unrestricted foreign ownership. This guide prepares an eligibility and certificate review; it does not establish that any applicant qualifies automatically.

Illustration of project information and corporate document preparation
Illustration; not an actual office or client photograph

Information for a scope review

TopicStarting informationReview question
InvestorsNationalities, shares and ownership chartEligibility and control
BusinessProducts, services, customers and revenueTreaty scope and reservations
EvidenceExisting corporate and director recordsRecipient document requirements

Trace the investors and control arrangements

Prepare investor nationalities, shareholders, share proportions and intermediate companies, together with directors and control arrangements. Corporate shareholders require their own incorporation and ownership evidence. Incorporation in the United States alone should not be assumed to resolve every nationality or control condition.

Match the activities to treaty scope and reservations

Describe the products or services, customers, revenue sources and operating locations. The treaty is not permission for every activity or a general right to own land. Reserved activities and sector-specific laws need separate assessment. Avoid blanket claims that all Foreign Business Act lists are exempt without conditions.

Separate eligibility evidence from the Thai certificate

Check the evidence and certification steps involving the US authorities separately from the Foreign Business Certificate process with the Department of Business Development. Match the applicant and requested activities across the documents. Confirmation by one authority is not a substitute for the other authority’s requirements, and a certificate should not be confused with a discretionary Foreign Business License.

Operating licences, taxes and personnel remain separate

Assess sector licences, VAT, accounting and staff work permissions against the actual operations. Treaty-based certification does not automatically confer BOI incentives, a visa or a work permit. List these as separate tasks in the project plan and written scope rather than assuming they are included in incorporation.

Review foreign-issued documents before commissioning work

Send an ownership chart, activity summary, existing corporate records and the intended filing scope. Confirm accepted language, copies and certification with the recipient before paying for translation or legalisation. Share only necessary personal data through an agreed channel, and never provide passwords or signed blank forms.

Agree an itemised quotation and a realistic plan

Ask staff for a written quotation after review. Distinguish ownership advice, incorporation, certification, translations, official fees and additional work. Document readiness and authority review affect timing. Neither a fixed completion interval nor eligibility or approval is assured.

Questions before preparing an application

Can a company with US investors use treaty rights immediately?
Do not assume so. Review investor eligibility, ownership, activities and the applicable certificate process before relying on treaty-based permission to operate.
Does the treaty cover every business activity?
No. Reservations and sector laws need review against the actual activities. A blanket exemption statement is not a substitute for that assessment.
Does US-side confirmation replace the Thai FBC?
Do not treat them as interchangeable. Check the Department of Business Development certificate process separately from US-side nationality evidence or confirmation.
Does certification also grant BOI or work permission?
Not automatically. BOI, tax, visa and work-permit eligibility are separate assessments with their own conditions.
What information should I send for review?
Prepare an ownership chart, nationalities, share proportions, existing corporate records, directors and a summary of activities and revenue. Specify whether incorporation and certification are both requested.
How can I obtain fees and a schedule?
Ask staff for a written quotation after evidence review. Separate service charges, official fees and additional work, and confirm a proposed plan without fixed-time or approval guarantees.

Official sources for requirement checks

General preparation guidance. Check current announcements and project facts before filing; eligibility and approval are not assured.

Review incorporation separately from investment permissions