Scenario: a 40-page land sub-lease is signed in parallel Vietnamese and English versions, with no clause saying which prevails. In year six the parties clash over who bears infrastructure charges: the English text puts them on the tenant; the Vietnamese text is ambiguous the other way. “Which version applies” is no longer an academic question. This article analyses the legal risk of bilingual contracts without a priority clause and how to lock that risk down at drafting.
No default rule: the gap in contract law
The Civil Code 91/2015/QH13 governs contract formation and interpretation (Article 404 on interpreting civil transactions: unclear terms are read by the parties’ common intention, custom and the transaction’s purpose) but contains no language-priority rule for bilingual contracts. When versions conflict, the dispute resolver must reconstruct common intention from the whole negotiation trail — drafts, correspondence, mark-ups — an expensive, unpredictable exercise, with ambiguity typically read against the party that drafted the template. In other words, omitting the priority clause does not void the contract; it converts every translation divergence into a potential interpretation lawsuit instead of a simple cross-check.
The operating layer: the Vietnamese text is always present
Whatever the parties agree, a land sub-lease in Vietnam must pass through Vietnamese systems: registration at the land registration office, tax authority dealings on land rent, production to the park Management Board and to banks on mortgage. Filing rules require Vietnamese documents; foreign-language papers must be translated and certified. A contract that is “English only” or “English prevailing” still spawns an operating Vietnamese version translated ad hoc by whoever runs the procedure — and that uncontrolled translation is what the authority records. The risk is two-layered: internal (interpretation between the parties) and external (the filed translation diverging from the original). A priority clause plus a duty to use one agreed translation for all procedures is the only fix covering both layers.
Drafting the priority clause and its toolkit
Recommended structure for a bilingual land sub-lease in Vietnam: one, a priority clause designating the Vietnamese text as the interpretation basis (because it is the operating text before Vietnamese authorities), with the foreign party acknowledging independent advice on the Vietnamese content — this defuses any later “I never understood the prevailing text” argument. Two, a bilingual glossary for land rent, sub-lease rent, infrastructure fees, handover date and measured area — one fixed rendering throughout. Three, a controlled signing process: cross-review of both versions (back-translation for money and term clauses), page numbering and initials on every page of both versions. Four, a correction mechanism: divergences, once found, are fixed by a bilingual minute recording the agreed reading, effective as a contract annex. The cost of this toolkit is trivial next to one two-year interpretation dispute.
Frequently Asked Questions
With no priority clause in a bilingual land sub-lease, which version governs in a dispute?
Vietnamese contract law has no default rule choosing the Vietnamese or the English version when two signed versions conflict. The practical layers: before Vietnamese authorities (land registration, tax, Vietnamese courts), the Vietnamese text is the working text and foreign-language documents must be notarised translations when filed; in commercial arbitration, the tribunal interprets both versions by the parties’ common intention, resolving ambiguity against the drafting party. The biggest risk is not the forum — it is that each side quietly performs for years on its own language’s meaning, and the divergence only explodes when a dispute arrives.
How should a language-priority clause be drafted?
A tight clause has four components: it designates the governing text for interpretation when versions differ (e.g. ‘the Vietnamese version is the original and prevails for interpretation’); its scope (all annexes, minutes and notices under the contract); a signing-time cross-check duty (both parties confirm they have reviewed the equivalence of both versions before signing); and a correction mechanism if a divergence is discovered later (a bilingual correction minute, never a unilateral fix of one version). Avoid half-clauses like ‘both versions are equally valid’ without saying which governs on conflict — that is a dispute formula.
How are mistranslated legal terms (for example ‘land rent’) interpreted?
When the two language versions diverge on a term, interpretation falls back to the transaction-interpretation rules in Article 404 of the Civil Code 91/2015/QH13: read the wording in its ordinary meaning across the whole transaction; if a term admits several meanings, choose the one that makes the clause effective and consistent with the transaction’s purpose, together with the custom of the place of transaction. The classic example in park land leases: ‘land rent’ mistranslated between State land rent payable under the land lease decision and sub-lease rent payable to the park developer — two amounts with entirely different subjects, calculation bases and escalation mechanics, where one conflated translation can distort the whole price clause. Prevention is cheaper than cure: a proper bilingual contract carries a bilingual definitions clause from the start (one fixed term per concept in both versions) and a language-priority clause to settle residual divergences.
Should we hire a lawyer to review both versions before signing, and what does it cost?
Yes — the bilingual review fee is small next to the value of a long-term land lease and the cost of a dispute over a mistranslated clause. A proper legal review covers: clause-by-clause comparison of the material terms between the two versions (price and adjustment mechanics, term and renewal, termination triggers, penalties and damages, dispute resolution); a defined-terms check so core legal concepts (handover date, force majeure, chargeable area) are translated consistently throughout; and settling the prevailing-language clause or the reconciliation mechanism for conflicts. On cost: the law sets no fee schedule for legal services — fees are agreed with the firm, hourly or fixed, depending on the contract’s length and complexity; obtain quotes from two or three firms with industrial real-estate experience and require the quote to state its scope (translation review only, or commercial substance as well).
