In the context of deep international economic integration, Vietnam has become and is becoming an attractive destination for foreign investment flows. For foreign enterprises seeking opportunities to establish operations, build partnerships, or expand trade in this dynamic Southeast Asian market, navigating and understanding the contract law system is a vital requirement. Mastering the legal framework governing contractual relations not only helps investors proactively protect their legitimate rights and interests but also serves as an effective tool to prevent costly disputes, thereby ensuring smooth and effective business operations. This article provides a comprehensive and in-depth look at contract law in Vietnam, covering everything from contract formation requirements to complex enforcement mechanisms. 

1. Legal Framework Governing Contracts in Vietnam 

The contract law system of Vietnam is built upon the primary foundation of the Civil Code of 2015. This important legal document officially came into effect on January 1, 2017, replacing the previous Civil Code of 2005. The introduction of the Civil Code 2015 marked significant reforms aimed at modernizing the national legal system and aligning it with international practices, creating a more transparent legal environment. The Civil Code 2015 acts as the legal backbone for all civil transactions, including contracts between businesses, between individuals, and between businesses and individuals. Furthermore, depending on the specific nature of each business sector, specific types of contracts are also subject to the regulation of other specialized laws. Typically, the Commercial Law 2005 governs commercial activities, the Labor Code governs employment relations, and investment laws govern capital injection and business activities of foreign investors. 

2. Basic Principles of Contract Law 

Vietnamese law recognizes and protects fundamental principles governing contractual relations, creating a balance between freedom of will and social order. 

• Freedom of contract: Parties participating in a transaction have the right to freely agree on contract terms, provided that these agreements do not violate prohibitory provisions of law or are not contrary to social ethics. 

• Principle of good faith: This is a core principle requiring parties to negotiate, establish, and perform contracts in a spirit of honesty and good faith. 

• Performance obligation: Once signed, a contract must be performed strictly and in accordance with the committed terms, unless the parties agree otherwise or the law provides for exceptions. 

• Civil liability: This principle stipulates that any party violating contractual obligations must bear corresponding civil liability as agreed in the contract or as prescribed by law. 

3. Validity Conditions and Contract Formation 

For a contract to be recognized as legal and enforceable in Vietnam, it must meet essential requirements strictly prescribed in the Civil Code. Based on Article 117 of the Civil Code 2015, a civil transaction (including contracts) is valid only when the following conditions are fully satisfied: First, the participating parties must have civil act capacity appropriate for that transaction; Second, the participation of the parties must be entirely voluntary; Third, the purpose and content of the transaction do not violate prohibitory provisions of law and are not contrary to social ethics; and finally, the form of the transaction must comply with legal regulations in cases where the law mandates a specific form. 

Regarding contract form, Vietnamese law allows for certain flexibility. Most contracts can be concluded through speech, writing, or specific acts. However, to ensure legal validity and provability, certain specific types of contracts must be made in writing. These cases include: Contracts for transactions valued at 500 million VND or more (approximately 20,000 USD); Loan contracts where at least one party is an organization; Transactions related to real estate; Contracts required by law to be notarized or certified; and technology transfer agreements. For foreign enterprises, legal advice is always to use written contracts for all transactions, regardless of value, to ensure clarity and enforceability in case of disputes. 

Regarding language, although Vietnamese is the official language, parties have the right to draft contracts in foreign languages. However, for certain official administrative procedures such as registration or notarization, authorities may require a Vietnamese translation. Business practice shows that many foreign enterprises choose to use bilingual contracts (Vietnamese and English), clearly specifying the prevailing language in case of discrepancies between the two versions. 

4. Common Types of Contracts in International Business Activities 

In the process of establishing and operating a business in Vietnam, foreign investors will have to encounter and participate in diverse legal relationships. Practice shows that there are five main types of contracts that play a backbone role in the operational structure of foreign enterprises, requiring thorough understanding to ensure compliance and optimize benefits. 

4.1. Sales and Purchase Agreements 

Considered the foundational and most common type of transaction in international trade, the Sales and Purchase Agreement plays the role of governing the exchange of goods and provision of services both across borders and domestically. The nature of this contract requires parties to build a tight legal framework to manage risks during the circulation of goods. Accordingly, key terms must be prescribed in detail, including pricing mechanisms, delivery obligations and timing, payment schedules, as well as product warranty commitments. Especially in the context of multinational trade, establishing a clear dispute resolution mechanism right from the drafting stage is a key factor to protect the enterprise’s interests when conflicts arise. 

4.2. Distribution and Agency Agreements 

For foreign enterprises wishing to penetrate the Vietnamese market without establishing a direct commercial presence initially, appointing local distributors or agents is an optimal strategy to market and sell products. However, this relationship carries many potential legal risks if not strictly controlled in writing. Therefore, distribution and agency agreements need to be drafted with high precision, clearly defining the permitted territory of operation, exclusivity commitments to avoid conflicts of interest, and specific sales targets. Additionally, commission structures and contract termination conditions are also contents that need to be agreed upon transparently to ensure the stability of the distribution network. 

4.3. Joint Venture Agreements 

Many foreign investors choose to access the Vietnamese market through joint ventures with local partners to leverage local market knowledge and available resources. This is considered the contract type with the most complex legal structure, requiring an extremely meticulous negotiation and drafting process. The parties need to reach a consensus and record in detail within the contract the capital contribution ratios, profit-sharing methods, and especially the corporate management and governance structure to avoid deadlock in decision-making. Furthermore, a clear exit strategy is an indispensable part of a joint venture agreement, helping parties proactively have a safe withdrawal plan when business objectives change. 

4.4. Labor Contracts 

When recruiting personnel who are Vietnamese, foreign enterprises enter a field subject to strict regulation by local law. Enterprises must absolutely comply with the provisions of the Labor Code when entering into labor contracts. This document is not merely an agreement on work but also a basis for protecting the rights of employees. The content of the contract must fully cover terms regarding probation periods, working hour regulations, salary regimes, and contract termination procedures strictly according to legal order. This compliance helps enterprises avoid labor disputes and unnecessary administrative penalties. 

4.5. Lease Agreements 

To establish physical facilities for business operations, enterprises often have to participate in commercial or civil lease relationships for offices, retail locations, or manufacturing plants. Unlike some other countries, Vietnamese law requires these real estate lease contracts to be made in writing and to strictly comply with the regulations of the law on real estate and housing. Compliance with the form and content of the lease agreement is a prerequisite to ensure the legal right to use the business location and avoid the risk of the contract being declared invalid. 

5. Important Clauses to Note 

When drafting contracts to be applied in Vietnam, certain specific clauses need special attention from the parties to ensure validity and benefits: 

5.1. Governing Law and Dispute Resolution Jurisdiction 

In principle, parties have the right to choose which country’s law will govern their contract. However, it should be noted that for contracts performed primarily within the territory of Vietnam, Vietnamese Courts may still apply mandatory provisions of Vietnamese law regardless of the chosen governing law. The jurisdiction clause needs to clearly specify whether disputes will be resolved at a Vietnamese Court or through arbitration. 

5.2. Dispute Resolution Mechanism 

Vietnam recognizes both litigation and arbitration for commercial disputes. However, many foreign enterprises tend to prioritize arbitration due to concerns regarding the efficiency and objectivity of the local court system. Vietnam is a member state of the New York Convention on the Recognition and Enforcement of Foreign Arbitral Awards, which helps international arbitral awards generally be recognized and enforced in Vietnam. Common arbitration venues for disputes related to Vietnam include the Vietnam International Arbitration Centre (VIAC), the Singapore International Arbitration Centre (SIAC), and the Hong Kong International Arbitration Centre (HKIAC). 

5.3. Force Majeure 

The force majeure clause is particularly important in the context that Vietnam is frequently affected by natural disasters and the possibility of changes in regulatory provisions. Vietnamese law recognizes force majeure as a ground for exemption from liability, however, the contract needs to clearly define what constitutes a force majeure event and the obligations of the parties when such an event occurs. 

5.4. Confidentiality and Intellectual Property Rights 

Protecting proprietary information is a paramount factor. Confidentiality clauses need to clearly identify what information is confidential, the obligations of the receiving party, permitted disclosure cases, and the duration of the confidentiality obligation. Additionally, the contract needs to clearly prescribe ownership and usage rights regarding intellectual property created or used during the contract performance period, this is especially important in technology transfer, licensing, and service agreements. 

5.5. Termination and Divestment 

Clear termination clauses help parties understand their rights and obligations when ending a partnership. The contract needs to include grounds for termination, notice periods, legal consequences of termination, and post-contractual obligations. 

6. Contract Performance and Penalties for Breach 

Understanding how Vietnamese law handles contract performance and breach is key to effective contract management. According to Vietnamese law, parties must perform contracts seriously and in accordance with the committed terms. In cases where contract terms are unclear, courts will interpret them based on the purpose of the contract, established practices between the parties, commercial customs, and the principle of good faith. 

Vietnamese law distinguishes between fundamental breach and non-fundamental breach. A fundamental breach occurs when the breaching party fails to perform a substantial obligation, causing serious damage to the extent that it defeats the purpose the parties aimed for when entering into the contract. This distinction directly affects the available remedies. 

When a breach occurs, the injured party may pursue remedial measures such as: Compelling specific performance; Terminating the contract and claiming damages; Claiming compensation for actual damages; Penalty for breach (if stipulated beforehand in the contract); or Suspending contract performance until the other party remedies the breach. 

Additionally, parties need to be aware of the statute of limitations for lawsuits. For contract breaches, the general statute of limitations is 03 years from the date the breach was discovered or should have been discovered. Understanding these deadlines is necessary to preserve the enterprise’s right to sue. 

7. Specific Challenges for Foreign Enterprises 

Foreign enterprises participating in contractual relations in Vietnam face unique challenges and regulations: 

7.1. Investment Restrictions 

Certain business sectors in Vietnam remain restricted or prohibited for foreign investment. Contracts related to restricted sectors may require government approval or must comply with foreign ownership limits. Common restricted sectors include real estate, telecommunications, media, and certain professional services. 

7.2. Foreign Exchange Control and Tax 

Vietnam maintains foreign exchange control measures that directly affect payments under contracts. Cross-border payments typically require full supporting documentation and must comply with regulations of the State Bank of Vietnam. Therefore, contracts need to have currency and payment mechanism clauses that comply with these controls. 

Regarding tax, contractual arrangements can give rise to significant tax obligations. Foreign enterprises need to consider taxes such as Value Added Tax (VAT), Corporate Income Tax (CIT), Foreign Contractor Tax (FCT), and Withholding Tax. Working with tax advisors during the contract drafting process is necessary to optimize the tax position. 

7.3. Cultural Factors 

Understanding Vietnamese business culture can significantly improve the negotiation and contract performance process. Business relationships in Vietnam often value long-term cooperation, personal relationships, and saving face for partners. Although contracts provide the legal framework, maintaining good relationships with Vietnamese partners often proves equally important for the success of business operations. 

7.4. Registration and Notarization Requirements 

Certain specific types of contracts in Vietnam require registration or notarization to be enforceable or protected by law. 

• Notarization Requirements: Some contracts must be notarized by a Vietnamese notary, including: Contracts for donation of real estate, mortgage contracts for certain types of assets, and some agreements related to inheritance. The notarization process involves verifying the identities of the parties and confirming signatures before a licensed notary. 

• Registration Requirements: Other contracts require registration with competent state authorities: Real estate sale or lease contracts must be registered with local authorities; Technology transfer contracts must be registered with the Ministry of Science and Technology; Franchise agreements must be registered with the Ministry of Industry and Trade. Failure to complete mandatory registration procedures may render the contract invalid or result in penalties. 

8. Enforcement Mechanisms and Dispute Resolution 

When disputes arise, understanding enforcement mechanisms is extremely important. 

• Court Litigation: Vietnamese courts have jurisdiction over contracts performed in Vietnam. However, foreign enterprises often express concerns about efficiency, transparency, and potential bias toward local parties. Court proceedings can be lengthy, and enforcement of judgments may face practical challenges. 

• Arbitration: International arbitration offers an attractive alternative for foreign enterprises. Vietnam’s Law on Arbitration (amended in 2010) generally aligns with international standards. Key advantages include: Neutrality and expertise of arbitrators, confidentiality of proceedings, procedural flexibility, and international enforceability through the New York Convention. However, arbitration agreements must be properly drafted to ensure validity and enforceability under Vietnamese law. 

• Enforcement of Foreign Judgments: Vietnam has very few mutual legal assistance treaties regarding the recognition and enforcement of foreign court judgments. Currently, enforcement is feasible only for judgments from countries with which Vietnam has bilateral treaties (such as France, Poland, and some Eastern European countries). For other countries, enforcement of foreign court judgments is extremely difficult. 

• Enforcement of Foreign Arbitral Awards: Conversely, as a member of the New York Convention, Vietnam generally recognizes and enforces foreign arbitral awards. Nevertheless, this process can still face delays and requires filing with Vietnamese courts, which retain limited rights to refuse recognition. 

9. Practical Recommendations and Future Trends 

To maximize contract effectiveness and minimize disputes, foreign enterprises should adhere to the following recommendations: 

• Always engage qualified local legal counsel to review and advise on contracts, helping to identify potential issues and ensure compliance. 

• Draft clear, comprehensive contracts, avoiding ambiguous language as courts may interpret unclear terms to the disadvantage of the drafting party. 

• Select appropriate dispute resolution clauses, carefully considering between arbitration and litigation, and clearly specifying the arbitration institution, seat, and governing law. 

• Conduct thorough due diligence on partners before signing to verify legal status and financial capacity. 

• Ensure the contract complies with all applicable current laws, including investment restrictions and tax obligations, to avoid the risk of the contract being void. 

• Establish a contract management system to track performance progress and archive records. 

• Consider cultural factors and build personal relationships parallel to legal protections. 

• Use payment security mechanisms such as Letters of Credit (L/C), bank guarantees, or escrow accounts for large transactions. 

• Keep detailed records of negotiations, modifications, and performance. 

• Regularly review existing contracts to ensure compliance with frequent changes in Vietnamese law. 

Regarding future trends, Vietnam continues to modernize its legal system to attract foreign investment. Recent developments include the recognition of electronic contracts and digital signatures through the Law on Electronic Transactions. Furthermore, participation in international trade agreements such as CPTPP and EVFTA has led to many important legal reforms, especially in the fields of intellectual property and services. The government also commits to reducing administrative procedures and enhancing transparency, creating more favorable conditions for the business environment. 

Conclusion 

Understanding contract law in Vietnam thoroughly is the core foundation for the success of foreign enterprises. By equipping themselves with knowledge about the contract formation process, important clauses, and enforcement mechanisms, enterprises can confidently navigate the developing legal landscape of Vietnam. Thorough preparation, combined with the support of professional legal counsel and the construction of tight contracts, will be the key to building long-term and successful business relationships in this market. 

Note: This article provides general information only and does not constitute legal advice. To receive professional contract advisory services in Vietnam, please contact Harley Miller Law Firm, which provides comprehensive contract drafting, review, and negotiation services designed specifically for foreign enterprises. 

HARLEY MILLER LAW FIRM

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