Corporate income tax (CIT) applicable to foreign enterprises is one of the most significant financial obligations, directly affecting profitability and business efficiency. A thorough understanding of legal provisions on such tax is a main factor for enterprises to ensure compliance, mitigate risks, and optimize costs. NPLaw would like to analyze the current situation, legal framework, main considerations, and procedures concerning corporate income tax for foreign enterprises, while also addressing common legal matters. It aims to help foreign investors clearly understand their tax obligations, achieve cost efficiency, remain legally compliant, and confidently expand in the Vietnamese market.
I. Current status of corporate income tax for foreign enterprises in Vietnam
In the context of international economic integration, Vietnam has become an attractive destination for foreign investors, particularly in the sectors of manufacturing, technology, and trade. Corporate income tax plays a crucial role in business operations of these enterprises. The current situation reflects several noteworthy aspects:

- Growth in foreign investment: According to the press release on socio-economic statistics for the fourth quarter and the year 2024, the General Statistics Office reported that registered foreign investment capital in Vietnam reached 38.23 billion USD as of 31 December 2024, with thousands of foreign enterprises operating in industrial zones and major cities. Such expansion has also increased the demand for advisory services for corporate income tax to optimize costs.
- Complexity in tax declaration: Foreign enterprises often encounter difficulties in complying with Vietnamese tax regulations due to differences in legal systems and language.
- Tax incentives: Vietnam applies multiple corporate income tax incentives for foreign enterprises in high-tech industries, industrial zones, or special economic zones. However, taking advantage of these incentives requires in-depth legal expertise.
- Violations due to lack of awareness: According to the General Department of Taxation in 2024, some foreign enterprises were responsible for sanctions for incorrect tax declarations, late submissions, or failure to properly account deductible expenses.
- Digital transformation in tax administration: The electronic tax declaration system (eTax) has been widely implemented, foreign enterprises frequently require support to adapt to such a platform.
These challenges emphasize the indispensable role of legal advisory services in ensuring compliance and optimizing corporate tax obligations.
II. What is corporate income tax for foreign enterprises?
1. Definition
Currently, no legal document explicitly defines “corporate income tax for foreign enterprises”.
However, according to the Law on Corporate Income Tax and its guiding instruments, the concept may be understood as follows:
- Under Article 3 of the Law on Corporate Income Tax 2008, as amended by Clause 1, Article 1 of Laws on Taxation 2014, corporate income tax is a direct tax levied on taxable income earned by foreign-invested enterprises operating in Vietnam.
2. Is it difficult for foreign enterprises to comply with corporate income tax?
Fulfilling obligations on corporate income tax may prove challenging for foreign enterprises, especially those newly established in Vietnam, due to differences in legal systems, language, and business culture. To ensure full and accurate compliance, foreign enterprises must intensively understand relevant legal regulations, maintain an effective accounting and financial management system, and regularly update themselves on tax policy changes.
3. What main contents are required to complete corporate income tax, and which is the most important? Why?
To properly comply with corporate income tax obligations, foreign enterprises must determine the following elements:
- Taxable income: Identifying income derived from business operations, capital transfer, real estate transfer, and other sources (Articles 3 and 4, Law on Corporate Income Tax 2008 as amended in 2013).
- Deductible expenses: Determining deductible expenses when calculating taxable income (Articles 6 and 9, Law on Corporate Income Tax 2008 as amended in 2013; Circular 78/2014/TT-BTC).
- Tax rates: Applying the correct corporate income tax rate in accordance with law (currently 20%, except for specific preferential cases) (Article 10, Law on Corporate Income Tax 2008 as amended in 2013).
- Tax declaration and payment: Filing and paying tax on time as required by law (Articles 43, 44, and 56, Law on Tax Administration 2019; Decree 126/2020/ND-CP).
Among these, accurate determination of taxable income and deductible expenses is the most critical, as it forms the basis for calculating corporate income tax payable. Failure in these elements may result in sanctions and disruptions in business operations.
III. Legal provisions on corporate income tax for foreign enterprises
1. Main legal regulations need foreign enterprises to comply with
Foreign enterprises must particularly take into account the following provisions:

- Taxpayers (Article 2, Law on Corporate Income Tax 2008 as amended in 2013): Enterprises established under foreign law with or without a permanent establishment in Vietnam that generate taxable income in Vietnam.
- Tax bases (Articles 3, 4, 6, 9, and 10 of Law on Corporate Income Tax 2008 as amended in 2013): Taxable income, tax-exempt income, deductible and non-deductible expenses, corporate income tax rate rates.
- Tax incentives (Articles 13, and 14 of Law on Corporate Income Tax 2008 as amended in 2013, and Decree 218/2013/ND-CP): Conditions and procedures for corporate income tax rate incentives (e.g., tax exemption or reduction for investment projects in incentivized sectors or locations).
- Tax declaration and payment (Articles 43, 44, and 56 of Law on Tax Administration 2019, and Decree 126/2020/ND-CP): Duration, venues, and filing requirements.
- Adjusting prices, profit margins, and profit allocation ratios (Article 8, Decree 132/2020/ND-CP): Provisions governing related-party transactions and the determination, adjustment of pricing, profit margins, and profit allocation ratios.
2. Processes and procedures for implementing corporate income tax by foreign enterprises
Pursuant to the Law on Tax Administration 2019 and its guiding instruments, the process and procedures for completing corporate income tax includes:
- Tax registration: Obtaining a tax identification-number (tax code) (if not already available).
- Tax declaration: Preparing and filing corporate income tax declaration in prescribed forms to the competent authority within the statutory duration (quarterly or annually).
- Tax payment: Paying corporate income tax into the State budget in accordance with declared amounts.
- Finalization: Preparing and filing the annual finalization report for corporate income tax with the tax authority.
- Explanation and information provision: Providing documents and information as required during tax audits or inspections.
3. Main considerations to avoid violations on corporate income tax
To mitigate risks, foreign enterprises should:
- Thoroughly study tax laws and guiding regulations.
- Maintain proper accounting, invoicing, and supporting documents.
- Ensure truthful and accurate tax declarations.
- Pay taxes within statutory duration.
- Regularly update tax policy changes.
- Seek professional advice from tax consultants or law firms.
IV. Questions on corporate income tax for foreign enterprises
1. How is corporate income tax handled in cases of foreign enterprise mergers?
In case of merging foreign enterprises, corporate income tax must comply with the Law on Enterprise 2020 and its guiding instruments, as follows:
- The merged enterprise must fulfill its tax obligations prior to the merger.
- The acquiring enterprise inherits the tax rights and obligations of the merged enterprise.
- Taxable income and deductible expenses are determined under corporate income tax regulations.
2. Must a foreign enterprise pay corporate income tax in Vietnam on income sourced abroad?
As a general rule, enterprises are only liable to pay corporate income tax in Vietnam on income generated from business operations within Vietnam. However, under Clause 2, Article 2 of the Law on Corporate Income Tax 2008, it may include income sourced abroad if the enterprise has the permanent establishment in Vietnam. The application also depends on double taxation avoidance agreements between Vietnam and relevant countries.
3. What expenses are deductible for foreign enterprises?
Foreign enterprises may deduct actual expenses arising from business operations in Vietnam provided that:
- Valid invoices and documents are available.
- Expenses are directly related to business operations.
- Expenses do not exceed statutory limits (where applicable).
Common deductible expenses include raw materials, labor costs, depreciation of fixed assets, administrative expenses, selling expenses, and financial expenses (according to Articles 6 and 9 of Law on Corporate Income Tax 2008 as amended in 2013; Article 6 of Circular 78/2014/TT-BTC as amended by Article 4 of Circular 96/2015/TT-BTC; and Clause 1, Article 9 of Consolidated Document 22/VBHN-VPQH).
4. What legal support may foreign enterprises seek in case of difficulties with corporate income tax?
Foreign enterprises may seek assistance from:
- Tax authorities: Guidance on tax policies and filing procedures.
- Tax agents: Engaging tax agents to handle tax procedures.
- Tax advisory firms: Professional consultancy services.
- Lawyers: Legal advice, particularly in case of disputes with tax authorities.
5. If a foreign enterprise operates at multiple locations, must it implement corporate income tax in each locality?
Under Article 45 of the Law on Tax Administration 2019, a foreign enterprise with the permanent establishment in Vietnam is only required to complete corporate income tax centrally at its headquarters (where its tax code is registered). Branches are not required to implement separate corporate income tax but must report through the headquarters.

For income arising in different localities (e.g., real estate transfers), enterprises must declare and pay corporate income tax at the local tax authority where such income arises, according to Circular 78/2014/TT-BTC.
V. Why should foreign enterprises engage legal counsel on corporate income tax?
NPLaw provides comprehensive and professional legal services on corporate income tax for foreign enterprises, including:
- Advisory on applicable tax laws and corporate income tax incentives.
- Risk assessment and preventive legal solutions.
- Assistance in filing, paying, and finalizing corporate income tax on time and in compliance with law.
- Tax optimization to help clients achieve lawful cost savings.
- Representation in disputes with tax authorities, ensuring maximum protection of clients’ rights.
- Training and capacity building for accounting and financial management staff of foreign enterprises regarding Vietnamese tax law.
Contact NPLaw today for professional legal advice and assistance on corporate income tax for foreign enterprises. We are committed to accompanying you in building a sustainable and law-abiding business in Vietnam.