Investor-State Arbitration (ICSID · UNCITRAL · BIT / MIT)

อนุญาโตตุลาการนักลงทุน–รัฐ (ICSID · UNCITRAL · BIT) · § CrossBorder
Quick Answer
Screen BIT (jurisdiction, MFN, FET, expropriation, umbrella clause) → 6-month cooling-off → Notice of Arbitration → 3-member tribunal (investor 1, state 1, chair 1) → bifurcated jurisdiction/merits → award (avg. 3.8 yr) → enforce via ICSID Art. 54 or NY Convention.
Timeline: Cooling-off 6 months · constitution 4–8 months · jurisdiction phase 12–18 months · merits 18–30 months · quantum 6–12 months · total 3.5–5 years · ICSID annulment 2–3 years.
Official fee: ICSID lodging USD 25,000 + USD 42,000/yr admin · arbitrator USD 3,000/day (ICSID cap) or USD 800–1,500/hr market · quantum expert USD 500K–3M · third-party funding (Burford, Omni Bridgeway) 30–40% of award.
Legal Basis
ICSID Convention 1965 (154 states; Thailand signed but not ratified — Additional Facility available) · UNCITRAL Rules 2013 · 42 Thai BITs (incl. China 1985, Germany 2002, Netherlands 1972, UK 1978) · ASEAN ACIA 2009 · Energy Charter Treaty 1994.
Who Needs This
Foreign investors in Thailand facing expropriation / licence revocation / discriminatory tax · Thai outbound investors (oil & gas, power, telecom) suffering BIT breaches · SOEs defending claims.
Required Documents
- Evidence of 'investment' under Salini test (contribution, duration, risk, host-state development)
- Evidence of 'investor' — nationality + corporate chart (avoid treaty shopping)
- State measures (statutes, Cabinet resolutions, court orders) + timeline
- Damages under Chorzów Factory principle (DCF, sunk cost, fair market value)
- Diplomatic correspondence + minutes with the state
- Third-party funding disclosure (ICSID Rule 14, 2022).
Common Pitfalls
- Skip cooling-off · tribunal declines jurisdiction · restart.
- Treaty shopping (Dutch SPV post-dispute) · Philip Morris v Australia · abuse of process.
- Denial-of-benefits clause (US, Japan BITs) · controlling nationality mismatch · claim barred.
- State counterclaims (tax evasion, corruption) — prepare defence (cf. World Duty Free v Kenya).
- ICSID annulment Art. 52 (3 grounds) — 8% of awards set aside.
Typical Use-cases
- German power investor · licence revoked · UNCITRAL Netherlands BIT · USD 165M pre-award settlement.
- Thai telecom · Myanmar coup · ICSID Additional Facility · USD 380M claim ongoing.
- Chinese SEZ investor · 1985 China–Thailand BIT · MFN + FET breach · USD 47M award.
- SOE defence · Australian miner · ACIA USD 220M claim · won on jurisdiction.
FAQ
- Thailand hasn't ratified ICSID — options?
- ICSID Additional Facility or UNCITRAL ad hoc · both enforceable under NY Convention.
- How many Thai BITs are in force?
- 42 · notably China 1985, Germany 2002, UK 1978, Japan JTEPA 2007, ACIA 2009.
- MFN covers procedural rights?
- Depends on tribunal · Maffezini v Spain = yes · Plama v Bulgaria = no · risky to rely on.
- Must third-party funding be disclosed?
- ICSID Rule 14 (2022) + UNCITRAL Transparency Rules · funder + affiliates must be disclosed.
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Official sources — legal services
The information on this page follows the official sources below. Always check the latest version before you file.
- สำนักงานศาลยุติธรรม— Office of the Judiciary
- กระทรวงยุติธรรม— Ministry of Justice
- สภาทนายความในพระบรมราชูปถัมภ์ — ทนายความผู้ทำคำรับรองลายมือชื่อและเอกสาร— Lawyers Council of Thailand
- สำนักงานคณะกรรมการกฤษฎีกา — ฐานข้อมูลกฎหมายไทย— Office of the Council of State
- ราชกิจจานุเบกษา — ประกาศและกฎหมายที่มีผลบังคับ— Royal Thai Government Gazette
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Frequently asked questions
- Can a foreigner own 100% of a Thai company?
- Generally no for activities listed in the Foreign Business Act, where majority foreign ownership requires a Foreign Business Licence, a BOI promotion, or treaty rights such as the US–Thailand Treaty of Amity. Manufacturing and certain export activities are largely open, and BOI-promoted activities can permit full foreign ownership together with land-holding and visa privileges, so the right structure depends on the specific activity.
- What is the minimum registered capital for a Thai company?
- There is no general statutory minimum for a Thai-majority company, but practical thresholds apply: THB 2 million of paid-up registered capital per foreign work permit, or THB 1 million if the foreigner is married to a Thai national, and THB 3 million per foreign shareholder for a Foreign Business Licence. Capital should therefore be planned around the visa and work-permit outcome you need, not the incorporation minimum.
- How long does company registration take?
- Registration at the Department of Business Development can be completed within one to three working days once the name reservation, shareholder documents and company objectives are ready, and the VAT registration and social security registration follow afterwards. The realistic end-to-end timeline including bank account opening is two to six weeks, with the bank account usually being the slowest step for foreign directors.
- What ongoing accounting obligations does a Thai company have?
- Every Thai company must keep statutory accounts, file monthly withholding tax (PND 1, 3, 53) and VAT (PP 30) returns by the middle of the following month, file the half-year corporate income tax return (PND 51) and the annual return (PND 50), and have its financial statements audited by a Thai CPA and filed with the DBD each year. Dormant companies are not exempt — nil returns and an audited statement are still required.






