The following article analyzes the current situation and relevant legal provisions, and provides clarifications regarding ambiguous termination clauses in contracts.
I. Current situation concerning ambiguous termination clauses in contracts
In practice, termination clauses in contracts are often included as a mandatory provision. However, not all parties pay sufficient attention to drafting such clauses in a comprehensive and transparent manner. As a result, ambiguous termination clauses remain quite common, giving rise to complex legal consequences.

Many contracts contain only vague or generic provisions: Some contracts merely state that either party has the right to terminate the contract if the other party breaches contractual obligations, but it neither defines what constitutes a material breach, nor stipulates notification procedures, time limits, or legal consequences. This leads to differing interpretations by each party, creating opportunities for disputes.
Use of template or pre-drafted contracts: In sectors such as real estate, services, and credit, the stronger party often prepares standard form contracts containing termination clauses favorable to itself, such as provisions allowing unilateral termination at any time without notice. Such clauses are susceptible to being deemed unfair and may be declared void if challenged.
Increase of disputes: Court practice shows that many commercial and civil lawsuits arise from ambiguous termination clauses. When contracts are unilaterally terminated, the affected party often contends that such termination lacks legal grounds, thereby seeking compensation or annulment.
Lack of knowledge in contract drafting: Many small and medium enterprises, and even individuals, focus primarily on economic terms such as pricing and payment, while neglecting the binding nature of termination clauses. Consequently, when practical situations arise, the contract lacks sufficient legal basis for clear resolution.
II. Legal provisions on ambiguous termination clauses in contracts
In contractual relations, a termination clause serves as one of the mechanisms to safeguard the rights of the parties when contractual conditions are no longer met. However, in practice, many contracts unclear contain provisions, leading to disputes during performance. Vietnamese law provides fundamental rules to govern such matters, though their effectiveness depends largely on how the parties draft their clauses.
1. What constitutes an ambiguous termination clause?
An ambiguous termination clause refers to provisions that are vague, lack specific grounds, or without clear criteria for determining when the contract may be terminated. For instance, merely stating that Party A has the right to terminate the contract if Party B breaches obligations, without clarifying the degree of breach, notice period, or legal consequences.
2. How should parties address ambiguous termination clauses?
Where a contract lacks specific termination provisions, the parties may:
- Apply statutory provisions directly: Civil Code 2015 (Article 423 on contract rescission; or Article 428 on unilateral termination).
- Supplement it by an addendum: During performance, if necessary, the parties may execute an addendum to clarify termination circumstances.
- Negotiate or mediate in case of dispute: Flexible resolution through negotiation often reduces legal risks and litigation costs.
3. What risks may arise from ambiguous termination clauses?
Ambiguous termination provisions may result in:
- Increased disputes: Each party interprets the clause in its own interest, leading to prolonged litigation.
- Risk of partial invalidity: If deemed inconsistent with the law, the clause may be declared void under Article 130 of the Civil Code 2015.
- Economic and reputational damage: Sudden or unfounded termination may disrupt business operations, harming both counterparties and the terminating party.
- Imbalance of rights: Weaker parties may be subject to unfair terms, while the law does not provide detailed regulations for every situation.
III. Clarifications regarding ambiguous termination clauses
1. If a party unilaterally terminates based on an ambiguous clause, does it constitute breach of contract?
Under Article 428 of the Civil Code 2015, unilateral termination is lawful only where there are clear grounds under law or contract. If the termination clause is vague and no serious breach can be proven, such a termination may be deemed a breach, giving rise to liability for damages.

2. Which principles will the Court apply in resolving disputes over ambiguous termination clauses?
Where termination provisions lack clarity, Courts apply the following principles:
- Civil rights and obligations shall be established, performed, and terminated on the basis of free and voluntary agreement (Clause 2, Article 3, Civil Code 2015).
- Interpretation according to the will of the parties at the time of conclusion.
- Protection of the lawful rights and interests of the weaker party, particularly in standard form or consumer contracts.
3. Do ambiguous termination clauses affect the validity of the entire contract?
Pursuant to Article 130 of the Civil Code 2015, partial invalidity does not affect the entire contract, unless the invalid clause is decisive. Accordingly, the contract remains valid, with only the termination clause excluded or adjusted in accordance with the law.
4. Who takes liability for drafting an ambiguous termination clause?
Responsibility depends on the manner of contract formation:
- If the contract is pre-drafted by one party and the other is compelled to accept (standard form contract), liability generally falls on the drafting party, particularly if the clause is deemed unfair or void.
- If the contract is jointly negotiated, both parties share responsibility, though the risk lies with the party invoking the clause to terminate.
5. May ambiguous termination clauses be amended during contract performance?
The law permits amendment or rescission by agreement of the parties or as provided by law (Articles 401 and 403 of the Civil Code 2015). Such amendment may be made at any time upon mutual consent, thereby remedying ambiguity and reducing future disputes.
IV. Legal advisory services regarding ambiguous termination clauses
Given that ambiguous termination clauses are prone to disputes if not clearly drafted, legal advisory services play a crucial role. Lawyers not only assist enterprises and individuals in reviewing and revising vague provisions, but also:
- Provide safe legal solutions for contract termination, mitigating the risk of being deemed in breach.
- Represent clients in negotiation and mediation to minimize losses and safeguard legitimate interests.
- Assist in litigation before courts or arbitral tribunals when disputes arise.
- Advise on drafting standardized contract templates for enterprises, thereby reducing risks of invalidity or impracticality.
Clients seeking legal advice concerning ambiguous termination clauses are kindly invited to contact NPLaw for direct consultation and tailored guidance.