Bilingual Vietnamese–English (or Vietnamese–Chinese) contracts are all but standard in foreign-element transactions in Vietnam. Yet when a dispute arises, the first question both sides — and the court — must answer is disarmingly basic: where the two versions differ, in a bilingual contract which language version prevails? This article answers the 10 questions FLAT's clients ask most, from the dispute perspective: suing in court or going to arbitration.
Table of contents
- Vietnamese–English bilingual contract: in a dispute, which version prevails?
- The versions differ by one word with no language clause — how is it resolved?
- Does an "English prevails" clause really decide the outcome?
- English-only contract signed by a Vietnamese party — what happens in court?
- Will a court accept a translation done by one party itself?
- Arbitration at VIAC under a bilingual contract — what is the arbitral language?
- Versions conflict on the amount — who wins?
- No language clause, parties now dispute which version is correct — can it be fixed?
- Is notarization of the translation mandatory?
- How to sign bilingual contracts to avoid future disputes?
<a id="q-1"></a>1. Vietnamese–English bilingual contract: in a dispute, which version prevails?
Short answer: Both versions have equal effect. Which one "wins" on a conflict depends on whether the contract contains a prevailing language clause.
Explanation: Vietnamese law does not require commercial contracts to be drawn up in Vietnamese. The parties are fully entitled to agree on a bilingual contract and designate one language as the reference in case of discrepancy — an expression of the freedom of commitment under Article 3 of the 2015 Civil Code. When a dispute arises, the court or arbitral tribunal reads the prevailing language clause first. Absent such a clause, the deciding body must interpret the contract under Article 404 of the 2015 Civil Code: the parties' intent as shown throughout the negotiation, signing, and performance; the meaning best serving the contract's purpose and nature; custom at the place of conclusion.
Basis: Articles 3 and 404 of the 2015 Civil Code (91/2015/QH13), in force since 1 January 2017.
Next step: Open your contract and look for phrases like "In case of discrepancy, the English version shall prevail" or "the Vietnamese version shall have the highest legal effect." If you find nothing, read on to questions 2 and 8.
<a id="q-2"></a>2. The versions differ by one word and there is no language clause — how is it resolved?
Short answer: Article 404 of the 2015 Civil Code applies in order, prioritizing the parties' true intent.
Explanation: A single word can flip an obligation: "shall" translated as "may", or "net 30 days" rendered as "30 working days" in a payment term. Without a prevailing language clause, Article 404 of the 2015 Civil Code directs the deciding body through an order: first, the parties' intent as shown throughout the pre-signing, signing, and performance stages (negotiation emails, meeting minutes, exchanged drafts); then the meaning best serving the contract's purpose and nature; then custom at the place of conclusion. Note Article 404(6) in particular: where the drafter inserted terms to the other's disadvantage, they are interpreted in the other's favour — an important shield if you are the weaker party and the contract was drafted in both languages by the foreign counterparty.
Basis: Article 404 of the 2015 Civil Code (91/2015/QH13).
Next step: From today, keep every email, message, and negotiation minute touching the disputed term. They are precisely the evidence of "true intent" Article 404 calls for.
<a id="q-3"></a>3. Does an "English prevails" clause really decide the outcome?
Short answer: Yes. It is a lawful agreement and Vietnamese courts and tribunals respect it.
Explanation: A prevailing language clause is an ordinary contractual term protected by freedom of agreement. On a conflict, the designated version becomes the benchmark for rights and obligations. The clause is not absolute protection, though. First, where the signing party is a Vietnamese individual or business that does not know English and there are grounds to argue deceit or mistake at signing, the prevailing version can still be challenged — although courts are very cautious about accepting that argument against commercial entities. Second, before Vietnamese administrative, tax, and banking authorities, the Vietnamese version is the working text in practice; if it diverges from the prevailing English version, the company can run into trouble with tax refunds, international payments, or post-clearance inspections.
Basis: Articles 3, 117, and 404 of the 2015 Civil Code.
Next step: Do not add the clause for show. Make sure the non-prevailing version is translated accurately, matching each term of the prevailing version — see the five-step checklist in question 10.
<a id="q-4"></a>4. The contract is English-only but signed by a Vietnamese party — what happens in a Vietnamese court?
Short answer: The contract remains valid if it meets Article 117 of the Civil Code; but documents filed with the court must be accompanied by a notarized, certified Vietnamese translation.
Explanation: The law does not prohibit commercial contracts written entirely in a foreign language. Article 117 of the 2015 Civil Code only requires: legal capacity, voluntariness, and a purpose and content not violating legal prohibitions. Language is not a validity condition. However, the language of proceedings in Vietnamese courts is Vietnamese. Article 96(3) of the 2015 Civil Procedure Code provides: parties submitting documents and evidence in a foreign language must attach a Vietnamese translation that is notarized or lawfully certified. If the translation distorts the contract's content, the opposing party may object, demand re-translation, or ask the court to commission a judicial translation appraisal — and costs and time will grow considerably.
Basis: Article 117 of the 2015 Civil Code; Article 96(3) of the 2015 Civil Procedure Code (92/2015/QH13, as amended).
Next step: If your contract is English-only, prepare the notarized translation at signing — do not wait until litigation to rush it.
<a id="q-5"></a>5. Will a court accept a translation done by one party itself?
Short answer: Not as an official translation. Translations filed in court must be notarized or lawfully certified.
Explanation: Article 96(3) of the Civil Procedure Code requires translations "notarized or lawfully certified" — through a notarial practice organization or certified signature of the translator before a competent authority. A self-made translation, however accurate, is only for reference and will naturally be doubted by the other side. In practice, disputes over translation quality become a costly "second front": each side files a translation favouring itself, the court commissions an appraisal, and the case drags on for months. The lesson: when drafting a bilingual contract, agree on the translation provider upfront and have both sides cross-check and initial both versions.
Basis: Article 96(3) of the 2015 Civil Procedure Code.
Next step: Check whether your current notarized translation matches the foreign-language original 100% — especially figures, deadlines, and payment conditions.
<a id="q-6"></a>6. Arbitration at VIAC under a bilingual contract — what is the arbitral language?
Short answer: The parties agree it; failing agreement, the arbitral tribunal decides.
Explanation: Article 10 of the 2010 Law on Commercial Arbitration distinguishes two cases. For disputes without foreign elements, the arbitral language is Vietnamese (except where one party is a foreign-invested enterprise). For foreign-element disputes — the classic bilingual-contract scenario — or disputes where at least one party is an FDI enterprise, the parties agree the language; failing agreement, the tribunal decides. The point to keep clear: the arbitral language and "which contract version governs" are two different questions. Even where proceedings are conducted in English, the tribunal still evaluates both contract versions where it detects conflicts, and the prevailing language clause (if any) still applies to determine the contract's content.
Basis: Article 10 of the 2010 Law on Commercial Arbitration (54/2010/QH12), in force since 1 July 2011.
Next step: When drafting the arbitration clause in a bilingual contract, state the arbitral language (e.g., English) to avoid procedural disputes later — and check the chosen centre's procedural rules.
<a id="q-7"></a>7. The Vietnamese and English versions conflict on the amount — who wins?
Short answer: Neither automatically. The designated prevailing version wins; absent one, the parties' common intent about that figure must be proved.
Explanation: Amount conflicts — contract value, penalties, default interest — are the most dangerous bilingual disputes because the financial consequences are direct. The sequence: step one, check the prevailing language clause — the prevailing version decides the figure. Step two, without one, Article 404 of the Civil Code applies: review the entire negotiation history for the figure both sides actually agreed. The heaviest evidence is usually: quotation emails, quotation sheets, negotiation minutes recording the amount, and above all how the parties performed before the dispute — for example, three payment instalments made per the Vietnamese version's figure with no objection is strong evidence of common intent.
Basis: Article 404 of the 2015 Civil Code.
Next step: Collect immediately all payment vouchers, invoices, and amount-related emails — before the other side gets a chance to "rewrite the story".
<a id="q-8"></a>8. No language clause was signed and the parties now dispute which version is correct — can it still be fixed?
Short answer: Yes. Sign an addendum recording the prevailing language and a unified interpretation of the disputed term.
Explanation: A contract is an agreement, and an agreement can be amended by a new agreement — a contract addendum. The parties can sit down and record in writing: (1) which language prevails for the whole contract; (2) a unified interpretation of the disputed term; (3) retroactive effect of that interpretation for obligations already performed and ongoing. The addendum must be signed by authorized representatives of both sides, preferably bilingual — and this time, include a prevailing language clause. If the relationship has broken down beyond repair, the remaining path is litigation preparation: gather evidence of common intent under Article 404 of the Civil Code as analyzed in questions 2 and 7.
Basis: Articles 403 and 404 of the 2015 Civil Code (the parties' right to amend transactions by agreement).
Next step: Do not let the dispute drag on in back-and-forth emails — each contradictory email only worsens your litigation file. Propose a meeting and an addendum as soon as possible.
<a id="q-9"></a>9. Is notarization of a bilingual contract's translation mandatory?
Short answer: Not mandatory. Translations only require notarization or certification when used as evidence before Vietnamese courts.
Explanation: Vietnamese law does not require commercial contracts to be notarized (save special transaction types such as real estate transfers), nor does it require the translation of a bilingual contract to be notarized at signing. The notarization/certification requirement arises only at the litigation stage, under Article 96(3) of the 2015 Civil Procedure Code. But "not mandatory" does not mean "not advisable". For high-value or long-term contracts, preparing a notarized translation from the outset helps the business: file with tax and banking authorities swiftly; avoid being caught flat-footed when a dispute erupts; and eliminate from day one the risk of a "second translation favouring the other side" appearing in court.
Basis: Article 96(3) of the 2015 Civil Procedure Code.
Next step: Read our FAQ on notarization of commercial contracts (forthcoming) for which cases require notarization and which do not.
<a id="q-10"></a>10. How should bilingual contracts be signed to avoid future "which version prevails" disputes?
Short answer: Five must-dos: a prevailing language clause, a bilingual amendment rule, professional translation with cross-check, initialled pages, a preserved negotiation file.
Explanation: Prevention beats cure — careful drafting costs a fraction of one language dispute. Concretely: (1) State the prevailing language clause, e.g.: "This Contract is made in Vietnamese and English; in case of discrepancy, the English version shall prevail." (2) Provide that amendments are effective only when expressed in both languages and signed by authorized representatives — preventing single-language addenda. (3) Engage a professional legal translator, then have both sides' in-house counsel back-translate and cross-check before signing — never machine-translate a contract. (4) Initial every page of both versions to prevent page substitution. (5) Archive all emails and negotiation drafts — your "insurance" for Article 404 of the Civil Code when disputes arise.
Basis: Articles 3 and 404 of the 2015 Civil Code; Article 10 of the 2010 Law on Commercial Arbitration.
Next step: If you are about to sign a high-value bilingual contract, let FLAT's lawyers review both versions before you sign — contact FLAT Law Firm at hotline 0988424851.
Your question isn't here?
Every bilingual contract dispute has its own circumstances — contract value, the language actually used in negotiations, and the forum all shape the answer. If your question isn't answered above, contact FLAT Law Firm at hotline 0988424851 for advice on your specific case. You can also read our in-depth guides on commercial disputes and international contract drafting on our website.
Language versions
References
- 2015 Civil Code (No. 91/2015/QH13), Articles 3, 117, 403, 404 — in force since 1 January 2017.
- 2015 Civil Procedure Code (No. 92/2015/QH13, as amended), Article 96 — in force since 1 July 2016.
- 2010 Law on Commercial Arbitration (No. 54/2010/QH12), Article 10 — in force since 1 July 2011.
