Situation guide
US-Thai Treaty of Amity: 100% American Ownership & FBC Certification
US individuals, American-owned groups and their Thai finance teams.
Quick answer
The Treaty can support majority or wholly American ownership in qualifying activities, but US incorporation alone does not establish eligibility. Trace nationality, ownership and control, obtain the Commercial Service certification, then apply to DBD for a section 11 FBC. The six Thai reservations and sector laws still matter. Neither the US certification nor an Amity certificate grants a general land-ownership right or exempts the business from Thai tax.

The PDF button opens a print-ready sheet — choose “Save as PDF” in the browser dialog. It contains the key facts, the document checklist and the timeline.
Detailed guidance
Establish eligibility throughout the ownership chain
Start with the ultimate owners and trace each intermediate entity back to the Thai operation. US incorporation identifies a corporate domicile but does not necessarily prove American ownership. Maintain share registers, nationality evidence and control arrangements as one consistent chain.
Do not assume every director must be American, or that any third-country director can sign independently. Ask Commercial Service and DBD to confirm the current director-nationality and signatory requirements for the proposed structure. Treaty business eligibility is separate from immigration status and permission to work.
All six reservations and the land distinction
The Thai reservations cover communications, transportation, fiduciary functions, banking involving depository functions, exploitation of land or other natural resources, and domestic trade in indigenous agricultural products. Preserve those distinctions: the wording is not a blanket exclusion of every financial service or every agricultural activity.
National treatment does not create a general right to own Thai land. Premises, leases and any separate statutory land entitlement require their own checks. A treaty certificate is not a substitute for reviewing title and land restrictions.
US certification followed by Thai certification
Obtain the current Commercial Service checklist, assemble nationality and ownership evidence, and prepare corporate documents with required translations. The US certification supports the subsequent section 11 notification to DBD. It is not, by itself, permission to commence a restricted business.
Section 11 specifies a 30-day certificate-issuance framework following receipt of the notification under its statutory conditions. That is not a guaranteed end-to-end timetable from initial preparation. Document authentication, eligibility checks and requests for additional evidence are separate steps. After issue, track the certified scope and relevant changes.
Assessment scope and evidence
This guide is an editorial explanation of the cited official materials, not individual professional sign-off or an agency ruling. The desk assesses accounting and tax against your facts. Legal entitlement and applications should be confirmed with qualified counsel and the relevant authority.
Key facts
| Entitlement | The 1966 treaty provides national treatment within its covered scope, not permission for all businesses. |
|---|---|
| Thai route | Section 11 FBC based on section 10 treaty rights, rather than an ordinary section 17 FBL. |
| Ownership | Majority or wholly US ownership can qualify, subject to nationality, control and activity tests. |
| Land | No general Thai land-ownership entitlement follows from the treaty. |
| Tax | Accounting, corporate tax, VAT and withholding remain transaction-dependent obligations. |
Practical summary
If you only read one block, start with these five lines and return to the detail afterwards.
- 1.Structure planning — Review ownership, control, activities and reservations before committing.
- 2.Nationality certification — Submit the Commercial Service file and resolve ownership inconsistencies.
- 3.DBD notification — Seek the section 11 FBC with entitlement and authenticated documents.
- 4.Investor nationality evidence
- 5.Share registers at every tier and control chart
Document checklist
Investor nationality evidence
Identify genuine owners using the official checklist.
Share registers at every tier and control chart
Establish eligibility beyond the incorporation country alone.
Directors and signing mandate
Have the authorities assess the actual proposed structure.
Activities and customers
Screen treaty reservations and sector restrictions.
US certification and Thai notification
Keep the two stages distinct when recording operating permission.
Capital and opening-accounting file
Trace funds into the accounts and test applicable capital conditions.
Timeline
Structure planning
Review ownership, control, activities and reservations before committing.
Nationality certification
Submit the Commercial Service file and resolve ownership inconsistencies.
DBD notification
Seek the section 11 FBC with entitlement and authenticated documents.
Operational commencement
Check the issued FBC, tax registrations and employment permissions.
Ownership or activity changes
Reassess entitlement and notification requirements before new transactions.
Common mistakes
- Treating US certification as Thai operating permission.
- Omitting reservations or claiming general land ownership.
- Changing ownership without reassessing qualification.
- Confusing Amity business rights with a double tax agreement.
Repeat questions
No. Ownership eligibility, covered activities, treaty reservations and other legislation all require assessment.
Yes. Confirm the rules applicable to the treaty route and activity; do not automatically copy an ordinary FBL introduction timetable.
Business entitlement is not a tax incentive. Examine the US–Thailand tax treaty and domestic tax rules separately.
Confirm current eligibility with Commercial Service and DBD. Accounting and tax consequences depend on transactions. Inquire for official quotation based on transaction scope.
Verifiable sources
These original sources address the issues described under each reference; they do not certify every statement or a service outcome. Check amendments and the conditions applicable to the entity's actual circumstances.
1. Act
US–Thailand Treaty of Amity and Economic Relations (1966)US Department of Commerce and Embassy
National treatment and six reserved categories; neither a general land-ownership right nor a tax exemption.
2. Guidance
US Embassy business and Amity questionsUS Department of Commerce and Embassy
Nationality-certification contact and eligibility guidance; confirm current director and signatory requirements.
3. Act
BOI: official-hosted Foreign Business Act translationBoard of Investment
Sections 4, 11–12, 14 and 17 cover definitions, certification, capital and licensing; applicable Thai text and regulations govern.
4. Guidance
Revenue Department: Double Tax Agreements list and statusThe Revenue Department
Table of countries, entry-into-force dates, treaty texts and MLI modifications; open the specific treaty text before applying a rate.
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