Contracts with Thai Companies: 9 Clauses That Protect Your Money in 2026

One in three disputes between foreign buyers and Thai suppliers stems not from fraud or force majeure, but from a missing clause, an ambiguous sentence, or a basic misunderstanding of local law. Getting the contract right from the start is the single most effective risk-management tool available to any international buyer operating in Thailand.

Supply contracts in Thailand are governed by the Civil and Commercial Code (CCC). The Code requires the seller to deliver goods and the buyer to pay the agreed price. Simple in theory. In practice, the complexity lies in Thailand's foreign exchange controls administered by the Bank of Thailand, the legal priority given to Thai-language text in court, and the often misapplied Incoterms framework. Below is a practical breakdown of every critical contract element for 2026.

Quick Answer

• Default governing law - Thai law (CCC) applies unless the contract explicitly states otherwise
• Language priority: in a bilingual document, the Thai text prevails under Article 14 of the CCC unless both parties agree otherwise
• Foreign exchange controls: the Bank of Thailand imposes documentation requirements on outbound transfers, especially above $50,000
• Delivery timelines: air freight runs approximately 4-7 days, sea freight approximately 45-60 days
• Incoterms must be explicitly stated to define each party's responsibilities for delivery, insurance, and costs
• Written documentation of every agreement is essential - verbal commitments are nearly impossible to enforce in Thai courts

Scenarios and Options

Scenario 1 - One-off Purchase Under $50,000

For a single order below $50,000, risks are manageable but a written contract is still essential. A simplified English-language agreement using EXW or FCA (Incoterms 2020) with a fixed price and bank transfer payment terms is sufficient. The most important clause at this level: a clear pre-shipment quality inspection procedure.

Scenario 2 - Ongoing Supply Relationship (Master Agreement)

Long-term partnerships benefit from a framework agreement supplemented by individual specifications for each order. Critical elements include a price-adjustment mechanism (fixed price or index-linked formula), a defined claims procedure for quality disputes, and termination provisions with 30-90 days written notice. An arbitration clause is non-negotiable at this stage.

Scenario 3 - High-Value Contract with Advance Payment

For transactions exceeding $200,000, maximum financial protection is required. Use a Letter of Credit (L/C) issued through a reputable bank. Structure payments as 30% advance and 70% upon inspection and shipment confirmation. Specify the governing law and dispute jurisdiction explicitly. A bilingual contract (English plus Thai) with a clause designating the English version as controlling is strongly recommended.

Scenario 4 - Contract Involving Intellectual Property

If you are commissioning production based on proprietary designs or formulas, include provisions covering non-disclosure (NDA), ownership of IP rights, and a prohibition on manufacturing equivalent products for third parties. Thailand has solid IP protections, but they apply only when rights are explicitly documented in the contract.

Main Risks and Mistakes

1. Signing a Thai-only contract without understanding the content. Thai courts rely on the Thai text. Always require a bilingual version with a clause specifying which language version controls in the event of a conflict.

2. No arbitration clause. Without one, disputes go to Thai courts under Thai law - a process that can take 2-3 years. International arbitration (through the Thailand Arbitration Center or the ICC) is significantly faster and more predictable.

3. Ignoring Bank of Thailand foreign exchange rules. Outbound transfers exceeding $50,000 require supporting documentation. Unfamiliarity with these rules causes payment delays measured in weeks, not days.

4. Vague quality standards. Phrases like 'goods of acceptable quality' provide no legal protection. Specify exact standards by reference to ISO or TIS (Thai Industrial Standards), allowable defect rates, and the inspection procedure before shipment.

5. No termination mechanism. A contract without a clear exit clause is a trap. Define the grounds for termination, required notice periods, the refund process for advance payments, and compensation for damages.

6. Relying on verbal agreements. Thai law formally recognizes oral agreements, but proving them in court is nearly impossible. Document every change to the original terms in a written amendment signed by both parties.

7. Wrong Incoterms choice. EXW is commonly misused by buyers who underestimate what customs clearance and local logistics actually cost. The apparent savings frequently disappear by the time goods clear the border.

FAQ

Does a supply contract with a Thai company need to be notarized? No. Standard goods supply contracts under the CCC require only the signatures of authorized representatives. Notarization is required only for contracts involving real estate or land rights.

Can the contract be written entirely in English? Yes. Thai law does not prohibit English-language contracts. However, if a dispute reaches a Thai court, a certified translation will be required. In a bilingual document, the Thai text takes legal priority unless the parties have explicitly agreed otherwise.

What is the safest payment method? A Letter of Credit issued by a reputable bank is the gold standard. It guarantees the seller payment upon fulfillment of conditions and gives the buyer assurance that documentation covers the goods. For smaller amounts, a bank transfer split between advance and final payment after inspection is a practical alternative.

How do I verify a Thai company before signing? Request the company registration certificate from Thailand's Department of Business Development (DBD) and verify the company's status at datawarehouse.dbd.go.th. Confirm that the person signing the contract has authority to do so under the company's articles of association.

What should I do if goods arrive with defects? Follow the claims procedure in the contract. Standard practice: document defects with a formal report and photographs, notify the seller within 7-14 days, and submit a written claim. If the contract is silent on procedure, the CCC requires the buyer to notify the seller within a 'reasonable time.'

Can I specify a non-Thai governing law? Parties are free to choose the governing law. In practice, specifying a jurisdiction with no enforcement presence in Thailand creates serious complications. The recommended approach is Thai law combined with international arbitration as the dispute resolution mechanism.

What taxes apply when importing from Thailand? Customs duties vary by product category from 0% to 80%. Thai VAT is 7%. Import duties and VAT in the buyer's home country apply separately. All of these costs should be factored into your Incoterms selection and total landed cost calculation.

Do supply contracts need to be registered with Thai authorities? No. Standard supply contracts require no government registration. Exceptions apply to contracts involving licensed activities or goods subject to export controls.

A well-drafted contract with a Thai company is not a formality - it is your primary line of defense against financial loss, protracted disputes, and supply chain disruptions. Each of the nine elements covered above addresses a specific, documented risk. The cost of proper legal review before signing is a fraction of the cost of any one of these mistakes.

Ready to invest in Thailand? Our experts will help you find the perfect property.