International Tax Compliance Vietnam

The context of globalization and technological development has created numerous challenges in tax management, especially for multinational corporations with tax optimization strategies. In this context, Vietnam needs to strengthen technology and digital transformation in tax management, improve tax inspection and control processes, simplify tax declaration procedures, and train tax officials. Simultaneously, international cooperation will help Vietnam access effective tax management models and ensure transparency in tax collection from transnational corporations. Furthermore, the implementation of global minimum tax rates will not only enhance fairness in tax collection but also promote a fair and sustainable investment environment in Vietnam.

1. Global Minimum Tax Rate in Vietnam Changes the Tax Landscape for Large Multinational Corporations

Vietnam has implemented a global minimum tax rate framework of 15% for multinational corporations that meet the applicable revenue threshold. According to Decree 236/2025/ND-CP, reported by VietnamPlus, effective from October 15, 2025, this regime applies to multinational corporations with consolidated revenue of at least 750 million EUR. Vietnam’s implementation aligns with the OECD’s Pillar Two framework, aiming to establish a minimum effective tax rate for large multinational corporations.

This is particularly important for foreign-invested companies because tax incentives that previously resulted in lower effective tax rates may need to be reviewed under the new regulations. VietnamPlus reports that this policy aims not only to bring Vietnam into line with international tax practices but also to address cases where large corporations have significantly different effective tax rates across jurisdictions.

OECD tax reform Vietnam

2. Vietnam’s Pillar Two Requires More Than a Simple 15% Tax Calculation

Vietnam’s Pillar Two is based on the OECD’s Global Base Erosion Control Rules. The legal framework is more complex than simply comparing a company’s corporate income tax rate to 15%. The calculation involves jurisdictional-level information, adjustments, and specific rules that determine whether additional tax is payable.

Vietnam’s approach includes a domestic supplemental tax mechanism and rules covering income for related groups. This means that an affected company may need to understand not only its own tax position in Vietnam but also how the Vietnamese entity fits into the structure and reporting processes of the larger multinational corporation.

For this reason, finance teams should integrate tax, accounting, and reporting functions when considering the requirements of Pillar Two. Data used for calculations needs to be consistent with the corporation’s financial information and available in a format that can support the required reporting.

3. OECD Tax Reform: Vietnamese Businesses Need to Continue Monitoring

OECD tax reform is not a static project. International discussions continue to influence how multinational tax rules are coordinated between countries. In January 2026, more than 145 countries agreed to update several parts of the global tax agreement, including changes related to the interaction between the global and US minimum tax frameworks.

For businesses in Vietnam, this means that international tax compliance cannot be considered a one-time project. Tax teams need to monitor both Vietnamese regulations and relevant international developments, especially when the parent company or other entities within the group are located in different jurisdictions.

4. International Tax Compliance: What Vietnamese Companies Need to Prepare For

The international tax compliance that operations in Vietnam face can involve multiple layers of information. An affected multinational corporation may need to review its revenue, effective tax rates, local tax incentives, financial reporting, intercompany transactions, and other information necessary for calculating Pillar Two.

The real challenge is often the data, not the tax rules themselves. Information may be scattered across accounting systems, local finance teams, and overseas headquarters. If data is incomplete or inconsistent, the tax team may spend a significant amount of time cross-referencing before they can prepare the documentation.

Global Minimum Tax Vietnam

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Companies can alleviate this pressure by identifying relevant data early, assigning responsibilities to each information source, and creating an iterative review process. This also gives management a clearer picture of whether existing systems are suitable for new reporting requirements.

5. S4B Vietnam Supports International Tax and Finance Requirements

For multinational and foreign-invested businesses, global tax changes can add to the workload of local finance teams. A structured review process can help management understand the necessary information and identify compliance gaps.

S4B Vietnam provides business support for companies operating in Vietnam. If your organization needs assistance reviewing its tax and finance processes, preparing for international tax compliance or understanding how global tax developments may affect its Vietnam operations, contact S4B Vietnam to discuss your requirements.

S4B Vietnam

  • Address: Unit 701B – 701C, Tower A, Handi Resco Towers, 521 Kim Ma Street,  Giang Vo Ward, Hanoi, Vietnam
  • Tel: +84 24 3974 4181
  • Email: service@s4b.com.vn

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