Cultural Culture and Contracts; Misunderstandings & agreements in Thailand

An agreement made in conversation or by message can have legal consequences in Thailand. Whether it binds you depends on what was communicated, the surrounding circumstances and any formalities required for that transaction. A general explanation about Thai culture cannot answer those questions for your particular agreement. Civil and Commercial Code, sections 152, 154, 171 and 368.

If you are paying a deposit, approving work or discussing a disagreement, my advice is straightforward: confirm the important terms in language both sides understand, and keep a reliable record of the answer.

This matters to foreign residents and business owners, and equally to Thai businesses working with international customers. Both sides can leave a friendly conversation believing that something different was agreed.

Start with the agreement behind the conversation

Imagine discussing repairs to a property. You ask whether the work can be completed next week. The contractor replies briefly and sends a friendly message. You understand that the completion date is confirmed. The contractor understands that you have asked about availability and that the scope still needs approval.

This is a hypothetical example, but it illustrates a useful question: what exactly was accepted?

Before paying or starting work, confirm the scope, price, payment stages, completion date and any conditions. Ask the other party to identify anything they have not accepted. If the terms are still being discussed, make that clear in your own messages.

A practical confirmation might read:

“Please confirm that the attached quotation covers the work listed, at the stated total price, with completion by the agreed date. Please identify any exclusions or changes before we proceed.”

There is no need to guess what a short reply means when you can ask a precise follow-up question.

What Thai law says about intention

Section 171 of the Civil and Commercial Code directs attention to the true intention behind a declaration, rather than merely its literal wording. Section 368 requires contracts to be interpreted in good faith, taking ordinary usage into account.

There is an important limit. Under section 154, a person’s unspoken intention not to be bound does not, by itself, invalidate what they have expressed, unless the other party knew of that hidden intention. Saying later that you were “only being polite” is therefore not an automatic answer to a contractual claim. Civil and Commercial Code, sections 154, 171 and 368.

For a disputed conversation, we need the actual words, the proposal they answered and what happened afterwards. A cultural generalization about how Thai people or foreigners communicate cannot replace that evidence.

LINE and WhatsApp messages can matter

A conversation does not lose legal significance simply because it took place in a messaging app. Thailand’s Electronic Transactions Act recognises electronic communications and allows offers and acceptances to be made electronically. Where writing or a signature is legally required, sections 8 and 9 set conditions for satisfying those requirements electronically. Electronic Transactions Act, sections 7–9 and 13.

ETDA’s guidance also explains that electronic contracting can involve ordinary digital interactions. The practical questions include whether the person can be identified and whether their intention is clear. ETDA guidance, 6 June 2025.

It helps to separate three issues:

A screenshot may help prove an exchange without proving every part of a claim. Section 11 prevents electronic evidence from being rejected merely because it is electronic, while requiring its reliability, integrity and attribution to be considered. Electronic Transactions Act, section 11.

Keep the original chat, attachments, voice messages and payment records. Preserve the surrounding conversation and dates. If you prepare a translation or a short summary, retain the original material alongside it. A cropped screenshot can leave out the very message that explains what the parties meant.

Clear wording must be matched by the right documents

Good communication helps establish the agreement, but some transactions require additional legal steps. For example, the sale transferring ownership of immovable property must be in writing and registered with the competent official. A preliminary agreement to buy or sell is a different matter, with its own enforcement requirements. A chat exchange alone does not complete the registered transfer. Civil and Commercial Code, section 456.

For an important bilingual agreement, have both versions reviewed together. Compare the price, obligations, deadlines, cancellation provisions and any clause addressing differences between the languages. Keep a record of agreed amendments and make sure the final versions reflect them.

If a document is placed in front of you in a language you cannot read, ask for an accurate explanation before signing. An informal summary such as “this is only standard paperwork” is not enough to decide whether its terms are acceptable.

For property purchases and significant leases, arrange legal review of the transaction and documents before committing funds.

Deal with the disagreement before it becomes a public argument

When something goes wrong, start with the specific issue. Identify the term you understood, the document or message supporting it, and the outcome you are asking for. Give the other party a chance to explain their position.

A useful opening is: “My understanding was that this work was included in the agreed price. The quotation and our messages are attached. Please explain the additional charge so we can resolve the difference.”

That approach is a practical recommendation. It does not guarantee a settlement, and it should not delay action on a court document, police summons or other deadline.

Public accusations create a separate legal issue. Penal Code sections 326 and 328 address defamation, including publication. Sections 329 and 330 contain protections and qualifications concerning good faith and proof of truth.

The truth provision has a limitation for private matters where proof would not benefit the public. A negative review is not automatically unlawful, but “it is true” is not a universal guarantee against liability. Penal Code, sections 326–330.

Preserve the evidence and consider the wording and purpose before posting allegations or threatening exposure. If your objective is repayment, completion of work or an agreed exit, keep your communication focused on that objective.

Ask for an interpreter when a criminal matter requires one

Everyday conversational Thai and understanding a formal statement are different levels of language ability.

Section 13 of the Criminal Procedure Code provides for an interpreter where a victim, suspect, defendant or witness cannot speak or understand Thai and has no interpreter. The investigator, prosecutor or court must arrange one without delay in the circumstances specified by the section. Criminal Procedure Code, section 13.

If you do not understand what is being asked or recorded, say so clearly. Ask for interpretation and appropriate legal assistance before confirming a statement. Request correction of any inaccurate record. This statutory provision concerns criminal proceedings; it should not be presented as a general entitlement to a free interpreter for every private transaction or administrative appointment.

What to prepare if there is already a dispute

Put together a short chronology and the complete documents. Include:

These are practical preparation steps. They allow the legal issue to be assessed without relying on assumptions about either party’s nationality or intentions.

Questions readers ask

Does a short reply in LINE mean I have a binding contract?

It can be relevant, but a short reply alone does not answer the question. The proposal, surrounding messages, identity of the sender, conduct and applicable formalities need to be considered together. The same applies to WhatsApp and email. The statutory basis is explained above.

Is a verbal agreement always unenforceable in Thailand?

No. The answer depends on the type of transaction and any legal requirements for form or evidence. Do not assume either that every verbal agreement is worthless or that every spoken promise can be enforced. Section 456 illustrates why the transaction must be identified first.

What should a Thai business do when a foreign customer disputes extra work?

Keep the original scope and the communications approving any change. Explain the additional work, price and basis for charging it in language the customer understands. Before future changes, obtain clear confirmation of the revised scope, cost and timing. Whether an existing additional charge is recoverable depends on the agreement and evidence.

Discuss the documents with Closer CSS Law

If a language misunderstanding has become a contract or business dispute, contact Closer CSS Law with the agreement, relevant messages and a short explanation of the problem. We can review the documents, explain your options and identify the next steps.

We assist Thai citizens, foreign clients and Thai businesses regularly with these matters in Phuket, Bangkok and basically, anywhere in Thailand.

About this article

This article provides general information about Thai law and is not advice on your individual circumstances. Laws and administrative practice can change. Before acting, check the current rules and any deadlines against your own facts and documents. For advice on your situation, contact Closer CSS Law so we can assess the matter.

The wording, evidence and any required formalities matter. Have the complete agreement, including relevant Thai and foreign-language versions, reviewed before signing or taking action over a dispute