Personal Tax Code Registration for Foreigners Vietnam is an important step for foreign individuals who have tax obligations in Vietnam. A personal tax code, also known as a Tax Identification Number (TIN), helps the tax authority manage personal income tax (PIT), tax payments, tax declarations, and tax finalization. Foreign employees can work for Vietnamese companies, receive income from overseas employers, or earn other taxable income in Vietnam. Therefore, the correct registration method can vary from one person to another. Since July 1, 2026, taxpayer registration has followed Circular No. 90/2026/TT-BTC. The Circular replaced Circular No. 86/2024/TT-BTC and sets out specific rules for foreign individuals who do not have a personal identification number in Vietnam.

I. What Is Personal Tax Code Registration for Foreigners Vietnam?

1.1 What Is a Personal Tax Code?

A personal tax code is a number that the Vietnamese tax authority uses to identify an individual for tax administration. Foreign nationals who do not have a personal identification number from the National Population Database can receive a 10-digit Tax Identification Number.

The tax code connects a foreigner’s tax information with their income and tax records. Therefore, foreign employees should provide the correct tax code when completing relevant PIT procedures. The tax code can support:

• Personal income tax registration
• PIT withholding and declaration
• Tax payment
• Annual PIT finalization
• Tax refund procedures, where applicable
• Other personal tax procedures

As a result, accurate tax registration can help both the foreign employee and the employer keep their tax records consistent.

1.2 Who Needs Personal Tax Code Registration?

Not every foreigner who enters Vietnam needs to register for a personal tax code. Instead, the requirement depends on the individual’s income and tax obligations in Vietnam. For example, a foreign employee who receives taxable salary from a Vietnamese company may need a tax code. Similarly, a foreign individual who works in Vietnam while receiving salary from an overseas organization may also need to register.

Foreign individuals may need tax registration when they:

• Receive taxable salary or wages
• Work for a Vietnamese company
• Receive taxable income from an overseas organization while working in Vietnam
• Conduct business activities in Vietnam
• Have another tax obligation that requires registration

Therefore, foreigners should first review their work and income arrangements before choosing the registration method.

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II. Personal Tax Code Registration Through a Vietnamese Employer

2.1 Registration Through an Income-Paying Organization

For many foreign employees, the Vietnamese employer can handle personal tax code registration. The employee provides the required information, and the company collects and submits the registration details to the tax authority. This method can make the process easier because the foreign employee does not need to handle every registration step alone. In addition, the company can connect the tax code with its payroll and PIT records from the beginning. The company may need information such as the employee’s full name, date of birth, nationality, passport details, address, phone number, and email. Most importantly, the company should check the passport information carefully before submitting the registration.

2.2 Foreign Employees With Multiple Income Sources

A foreign individual may receive income from more than one organization. However, having several income sources does not mean that the individual should register several personal tax codes. Under Circular 90/2026/TT-BTC, when a foreign individual has income from multiple income-paying organizations and chooses registration through an income-paying organization, the individual authorizes one organization to carry out the tax registration. After the tax authority issues the tax code, the individual provides that same tax code to the other income-paying organizations for tax withholding and reporting. Therefore, a foreign employee should check whether they already have a tax code before asking another employer to register a new one.

2.3 Documents for Employer-Based Registration

When a foreign employee authorizes the employer to register their tax code, the employer needs to collect the required documents and information. For foreign individuals, Circular 90/2026/TT-BTC requires a copy of a valid passport or another valid personal identification document where applicable. The employer also needs the authorization document for tax registration. The company should check the documents before submitting them. In particular, the name, passport number, nationality, and date of birth should match the employee’s valid documents. As a result, careful document checking can reduce errors in the tax registration system.

III. Direct Personal Tax Code Registration for Foreigners

3.1 When Does a Foreigner Register Directly?

Not every foreign individual can use an employer-based registration process. Some foreigners may need to register directly with the tax authority because they do not authorize an income-paying organization to handle the registration.

For example, a foreign individual may work in Vietnam but receive salary from an overseas organization or individual. In this situation, Circular 90/2026/TT-BTC provides a direct registration procedure for the individual. The place for submitting the application depends on the individual’s circumstances. For a person who receives salary from an overseas organization or individual for work performed in Vietnam, the application goes to the tax authority in the province or city where the work arises. Therefore, foreign employees with overseas payroll arrangements should review their tax registration position instead of assuming that the overseas employer handles all Vietnamese tax matters.

3.2 Documents for Direct Registration

A foreign individual who registers directly generally needs to submit the prescribed tax registration form and a copy of a valid passport.

In certain cases, the tax authority may also require an additional document. For example, a non-resident foreign individual who receives income overseas while a foreign employer sends them to work in Vietnam may need to provide a copy of the employer’s appointment or assignment document.

Therefore, the required documents can depend on the individual’s work and income arrangement.

Before submission, the foreign individual should prepare:

• Tax registration declaration
• Valid passport or accepted identification document
• Employer assignment or appointment document, where required
• Other supporting documents required for the specific case

3.3 Where Should the Application Be Submitted?

The correct tax office depends on the taxpayer’s situation. Circular 90/2026/TT-BTC provides different submission locations for foreign individuals who register directly.

For example, foreign individuals receiving salary from overseas organizations or individuals generally submit the registration at the tax authority where the work arises in Vietnam. Other cases may follow the tax authority where the individual works or resides.

Therefore, applicants should identify their exact situation before submitting the application.

IV. Personal Tax Code and Personal Income Tax

4.1 Tax Code and PIT

A personal tax code plays an important role in PIT administration. However, the tax code itself does not determine how much tax a foreigner must pay. Instead, PIT depends on factors such as taxable income, deductions, tax residency, and the source of income.

Therefore, foreign employees should treat tax registration and tax calculation as two related but separate steps. First, the individual obtains or confirms the tax code. Then, the individual or employer uses the relevant information for PIT withholding, declaration, payment, and finalization.

As a result, having a correct tax code from the beginning can make later tax procedures easier.

4.2 Tax Code and Tax Residency

A tax code does not automatically make a foreigner a Vietnamese tax resident. Tax residency follows separate rules, so the individual may need to review their time in Vietnam, residence arrangements, income sources, and any applicable tax treaty.

For example, a foreign employee may have a Vietnamese tax code while still needing a separate review of their tax residency status. Therefore, companies should not use the tax code alone to determine the employee’s PIT position.

Instead, the company should review the employee’s actual circumstances and apply the relevant tax rules.

4.3 Annual PIT Finalization

Foreign employees may need to complete annual PIT finalization depending on their income and employment situation. During the finalization process, the taxpayer should review total income, PIT already withheld, eligible deductions, income from different sources, and tax residency status.

Important information can include:

• Total taxable income
• PIT already paid or withheld
• Eligible tax deductions
• Income from different employers
• Tax residency status
• Tax payable or refundable amount

Furthermore, employees who change jobs during the year should keep their income and tax documents. This helps them check their total income and tax already paid when they complete the finalization process.

V. Important Issues for Foreign Taxpayers

5.1 Avoid Duplicate Tax Codes

Foreign employees should check whether they already have a Vietnamese tax code before registering again. This issue can occur when a foreigner changes employers or receives income from several organizations.

For example, a foreign employee may receive a tax code through their first Vietnamese employer and later move to another company. The new employer should use the existing tax code rather than create another one.

Therefore, companies should ask new foreign employees whether they already have a tax code. This simple step can help prevent duplicate records and tax reporting problems.

5.2 Keep Passport Information Accurate

Passport information plays an important role in foreign taxpayer records. Therefore, employees and employers should check the passport number, name, nationality, and other personal details before submitting tax registration information.

If a foreign employee renews or replaces their passport, they should also review their tax registration information. Where an update is required, the taxpayer should complete the relevant procedure so that the tax record remains accurate.

5.3 Update Personal Information When It Changes

Foreign employees may change their address, phone number, email, passport, or other registered information during their time in Vietnam.

When personal information changes, the taxpayer should check whether they need to update the tax registration record. Circular 90/2026/TT-BTC provides procedures for updating taxpayer information, including cases where individuals change registered information.

As a result, keeping tax records updated can help prevent inconsistencies between personal documents, payroll records, and tax information.

5.4 Registering Tax Information for Dependents

Foreign employees who claim eligible dependents for PIT purposes should also review the dependent registration requirements.

For foreign dependents, the relevant application can require a copy of a valid passport or another valid personal identification document. The taxpayer may also need documents that prove the dependent relationship and eligibility for the relevant tax deduction.

Therefore, employees should prepare dependent documents early, especially before annual PIT finalization.

VI. Employer Responsibilities for Foreign Employee Tax Registration

6.1 Collect Accurate Employee Information

Vietnamese companies that employ foreign workers should create a clear process for collecting tax registration information. Before submitting the application, the company should check the employee’s identity documents and existing tax information.

The company should review:

• Full name
• Date of birth
• Nationality
• Passport information
• Existing tax code, if any
• Address
• Contact details
• Tax registration authorization

In addition, the company should keep the supporting documents in paper or electronic form as required. Circular 90/2026/TT-BTC states that income-paying organizations must retain tax registration records and provide them when the tax authority conducts a tax inspection.

6.2 Submit the Tax Registration Information

When a foreign employee authorizes the company to register their tax code, the employer collects the required information and submits the prescribed consolidated tax registration declaration to the tax authority.

The employer should then keep the relevant records and use the tax code issued by the tax authority for PIT withholding, declaration, and payment.

Therefore, the company’s payroll and accounting teams should make sure that the same tax code appears in the employee’s relevant tax records.

6.3 Use the Correct Tax Code in PIT Reports

After receiving the tax code, the company should update its payroll and accounting systems. The company should also use the correct tax code in relevant PIT declarations and tax documents.

Furthermore, the company should compare the tax code with the employee’s personal information. If the information does not match, the company should review the issue before submitting further tax reports.

This process is especially important for companies that employ many foreign workers.

6.4 Support Foreign Employees With Tax Finalization

Finally, employers should support foreign employees with PIT finalization when required. The company may need to provide salary information, PIT withholding information, and other tax documents for the relevant year.

If a foreign employee leaves the company or leaves Vietnam, the company should also review the employee’s outstanding tax matters. This review can include salary, taxable benefits, PIT already withheld, and other relevant income.

As a result, good tax records can help both the company and the employee complete the final tax procedures more smoothly.

VII. Conclusion

Personal Tax Code Registration for Foreigners Vietnam is an important part of tax compliance for foreign individuals who earn taxable income in Vietnam. The correct registration method depends on the individual’s employment, income source, and relationship with the income-paying organization. For foreign employees working for Vietnamese companies, the employer can generally handle tax registration when the employee provides the required authorization and documents. Meanwhile, foreigners who receive income from overseas organizations or individuals may need to register directly with the relevant tax authority. Since July 1, 2026, Circular 90/2026/TT-BTC has provided the current taxpayer registration rules. The Circular also confirms that foreign nationals without a personal identification number can receive a 10-digit tax identification number. Therefore, foreign employees and Vietnamese companies should check the individual’s existing tax code, passport information, income sources, and tax registration status before submitting an application. In addition, they should update the tax record when personal information changes. A properly managed Personal Tax Code Registration for Foreigners Vietnam process helps companies maintain accurate payroll and tax records. At the same time, it gives foreign employees a clear tax record for PIT declaration, tax payment, and annual tax finalization.
MVA VIETNAM ACCOUNTING AND AUDITING COMPANY LIMITED