3-Year Corporate Income Tax Exemption: Powerful 2026 Guide

Introduction

Are you planning to establish a company in Vietnam and wondering whether your business qualifies for the 3-year corporate income tax exemption? Does every newly registered SME automatically receive a full corporate income tax (CIT) exemption, or are there specific legal conditions that must be satisfied? How is the exemption period calculated, and are there situations where the incentive may not apply despite a valid business registration?

The 3-year corporate income tax exemption introduced under Decree 20/2026/ND-CP guiding Resolution 198/2025/QH15 is considered one of the most attractive tax incentives for startups and small and medium-sized enterprises (SMEs) in Vietnam. For entrepreneurs establishing a company in Vietnam, this policy can significantly reduce initial financial pressure and improve early-stage cash flow. However, the eligibility criteria and compliance requirements must be carefully reviewed before assuming the benefit applies.

In this article, Green NRJ will guide you through the legal conditions, eligibility standards, calculation method, excluded cases, and practical compliance notes, helping your business confidently establish a company in Vietnam while maximizing available corporate income tax incentives.

Understanding the Legal Framework of the 3-Year Corporate Income Tax Exemption

Vietnam’s government has intensified its support for private sector development through targeted tax incentives. The 3-year corporate income tax exemption policy is specifically designed to encourage formal business registration and sustainable growth among SMEs.

Under Resolution 198/2025/QH15 (effective from May 17, 2025) and its implementing Decree 20/2026/ND-CP, SMEs that register their business for the first time are eligible for exemption from corporate income tax for three continuous years. The exemption period begins from the first year the Enterprise Registration Certificate is issued, regardless of whether the business generates profit in that initial year.

This means that newly established enterprises can significantly reduce their financial burden during their most vulnerable development stage — the startup phase.

Who Qualifies as an SME Eligible for Corporate Income Tax Exemption?

Eligibility for the 3-year corporate income tax exemption depends on whether the enterprise qualifies as a small or medium-sized enterprise under Decree 80/2021/ND-CP guiding the Law on SME Support 2017.

An enterprise must be classified as micro, small, or medium-sized based on its average number of employees participating in social insurance, total annual revenue, or total capital. The criteria differ slightly depending on whether the enterprise operates in agriculture, industry, construction, trade, or services.

For example, a micro-enterprise in the industrial sector must have no more than 10 employees participating in social insurance and annual revenue not exceeding VND 3 billion or total capital not exceeding VND 3 billion. Meanwhile, a medium-sized enterprise in the service sector may have up to 100 employees and annual revenue of up to VND 300 billion.

Businesses should carefully review their financial statements and social insurance records to confirm their SME status. Proper classification is critical because only enterprises meeting these conditions can access the 3-year corporate income tax exemption.

How the 3-Year CIT Exemption Period Is Calculated

One of the most frequently searched questions regarding corporate income tax exemption in Vietnam concerns how the exemption period is calculated.

The law clearly states that the exemption applies for three consecutive years starting from the first year the enterprise receives its Enterprise Registration Certificate. It is not based on the year the company begins generating taxable income.

Importantly, the policy applies from the 2025 tax period onward. For enterprises established before May 17, 2025, transitional rules apply. If a company is still within its first three years of operation as of May 17, 2025, it may enjoy the remaining exemption period, provided it meets all eligibility requirements.

For instance, a company established in June 2024 would still have part of its initial three-year period remaining when the resolution takes effect. In such a case, the enterprise may benefit from the corporate income tax exemption for the remaining eligible time.

Cases Where the Corporate Income Tax Exemption Does Not Apply

While the 3-year corporate income tax exemption offers significant advantages, it is not automatically granted to all newly formed companies. The law excludes certain cases to prevent abuse of the policy.

Enterprises established through mergers, consolidations, divisions, separations, or conversion of ownership or legal form are not eligible. The policy is intended strictly for genuinely new business registrations, not for restructured entities.

Additionally, restrictions apply to founders and legal representatives. If a legal representative, general partner, or the largest capital contributor previously held a similar position in another enterprise that is still operating or was dissolved less than 12 months prior to the new registration date, the new enterprise may be disqualified from enjoying the exemption.

Furthermore, certain types of income are excluded from the corporate income tax exemption. These include income derived from capital transfers, real estate transfers (except social housing), project transfers, overseas business activities, oil and rare mineral exploitation, online gaming services, and goods or services subject to special consumption tax, except in specifically regulated cases.

Understanding these exclusions is essential to avoid compliance risks and unexpected tax liabilities.

Compliance Requirements During the Exemption Period

Although eligible enterprises may enjoy a 0% corporate income tax liability during the three-year exemption period, compliance obligations remain fully in force.

Companies must continue to file quarterly and annual CIT declarations, even if the payable tax amount is zero. Proper accounting records must be maintained in accordance with Vietnamese Accounting Standards. In addition, tax authorities may request documentation proving SME status, including financial statements and social insurance employee data.

If an enterprise qualifies for multiple tax incentives, it may select the most beneficial policy but must apply it consistently throughout the incentive period.

Failure to comply with declaration and documentation requirements could result in penalties or loss of the exemption.

Why the 3-Year Corporate Income Tax Exemption Is a Strategic Advantage

For startups and SMEs, the early years of operation often involve high investment costs and unstable revenue streams. The 3-year corporate income tax exemption provides critical financial breathing space, enabling businesses to reinvest profits into expansion, recruitment, technology upgrades, and market development.

Beyond immediate financial savings, the policy reflects Vietnam’s broader commitment to fostering entrepreneurship, encouraging formalization of business activities, and strengthening the domestic private sector.

For foreign investors entering the Vietnamese market, understanding this corporate income tax exemption policy can significantly enhance investment planning and cash flow projections.

Conclusion

The 3-year corporate income tax exemption represents a powerful and strategic incentive for newly established SMEs in Vietnam. By meeting SME classification criteria, understanding the calculation of the exemption period, and carefully reviewing exclusion cases, businesses can fully leverage this tax benefit while maintaining legal compliance.

If you are planning to establish a company or wish to assess your eligibility for the corporate income tax exemption in Vietnam, Green NRJ’s legal and tax advisory team is ready to assist.

Contact Green NRJ today to ensure compliance, maximize tax incentives, and build a solid foundation for long-term business success.