Foreign Direct Investment (FDI) enterprises in Vietnam are subject to various tax reporting and payment obligations, including Value Added Tax (VAT), Corporate Income Tax (CIT), Foreign Contractor Tax (FCT) and Personal Income Tax (PIT) for employees. Meeting these obligations accurately and on time is important to maintain compliance and avoid penalties.
As of 1 July 2026, Vietnam’s tax reporting and administration framework is governed by Law No. 108/2025/QH15 on Tax Administration, together with Decree No. 252/2026/NĐ-CP and Circular No. 89/2026/TT-BTC. These rules update tax filing procedures, deadlines, forms and electronic tax administration requirements.
FDI enterprises should build these requirements into their regular compliance processes. Accurate and timely reporting can help reduce the risk of penalties and support processes such as tax refunds and profit remittance. The following sections outline the main tax reporting obligations, key deadlines, documentation requirements and practical considerations for FDI enterprises in Vietnam.
Types of Mandatory Tax Reports
1. Value Added Tax (VAT) Reports
VAT is a major indirect tax that FDI enterprises must report regularly. The filing frequency depends on prior-year revenue. Enterprises with revenue above VND 50 billion must file monthly VAT returns, while those with revenue of VND 50 billion or less may choose quarterly filing. Newly established companies may also opt for quarterly reporting if they expect lower revenue. Selecting the correct filing cycle is essential to avoid non-compliance.
VAT reporting methods in Vietnam include:
Credit method (deduction method):
This is the most common method for FDI enterprises. Output VAT is offset against input VAT, and only the net amount is payable. VAT returns are filed using Form 01/GTGT under Circular 80/2021/TT-BTC, either monthly or quarterly. Enterprises operating in multiple provinces must submit allocation appendices, such as Forms 01-2/GTGT, 01-3/GTGT, or 01-6/GTGT, to distribute VAT to relevant localities.
Direct method on revenue:
VAT is calculated as a percentage of gross revenue and reported using Form 04/GTGT. This method mainly applies to small businesses or entities not eligible for the credit method and is uncommon for FDI enterprises.
Direct method on value-added:
Applicable mainly to gold, silver, and precious stone trading, VAT is calculated on the value-added amount and reported using Form 03/GTGT.
2. Corporate Income Tax (CIT) Reports
Corporate Income Tax (CIT) is levied on corporate profits, and FDI enterprises must comply with both provisional and annual reporting requirements.
Quarterly provisional CIT payments:
FDI enterprises must estimate profits and pay provisional CIT quarterly, with payment due by the 30th day of the first month of the following quarter, such as April 30 for Q1. Although no quarterly return is usually required, timely payment is mandatory and helps spread tax obligations over the year.
Enterprises should monitor provisional CIT payments throughout the year and ensure that cumulative payments meet at least 80% of the annual CIT payable within the prescribed period to avoid late-payment interest on any shortfall.
Annual CIT finalisation:
After year-end, enterprises must finalise taxable income and CIT payable using Form 03/TNDN under Circular 80/2021/TT-BTC. The filing and payment deadline is the last day of the third month after year-end, typically March 31 for calendar-year companies. Finalisation reconciles accounting and taxable profit, offsets provisional payments, and determines any additional tax due or overpayment. Late or inaccurate filing can trigger penalties and audit scrutiny.
3. Foreign Contractor Tax (FCT) Reporting
FDI enterprises often engage foreign contractors for services such as consulting, licensing, or equipment supply. In these cases, Foreign Contractor Tax (FCT) may apply. FCT is a withholding mechanism under which the Vietnamese payer withholds and pays VAT and income tax on behalf of foreign contractors without a permanent establishment in Vietnam.
Key points on FCT reporting:
Taxes covered: FCT obligations for foreign contractors should be assessed under the current CIT and VAT legislation, together with the tax administration rules applicable from 1 July 2026.
Withholding method: The direct withholding method is most common. The Vietnamese payer withholds VAT and CIT or PIT from payments and remits the tax to the local tax authority, regardless of whether the contract is net or gross.
Declaration and deadlines: For transaction-based declarations, the filing deadline is generally the 10th day from the day following the date on which the tax obligation arises. Where permitted, businesses making frequent payments may use monthly declaration.
Compliance tip: Enterprises must assess FCT applicability for each payment, as some transactions may be exempt. Since the local payer bears full liability, accurate calculation and timely filing are essential, and professional advice may help manage risks and apply tax treaty relief.
4. Personal Income Tax (PIT) for Employees
FDI enterprises that employ staff in Vietnam are responsible for withholding, declaring and paying Personal Income Tax (PIT) on taxable employment income in accordance with the applicable regulations.
From 1 July 2026, the current PIT framework is governed by Law No. 109/2025/QH15 on Personal Income Tax, together with Decree No. 253/2026/NĐ-CP and Circular No. 87/2026/TT-BTC. Circular 87 provides detailed guidance on the implementation of the new PIT Law and Decree 253 and replaces the previous Circular 111/2013/TT-BTC framework.
Periodic PIT declarations:
For employment income, PIT withholding declarations are currently made quarterly. The quarterly filing requirement applies to organisations and individuals responsible for paying salary and wage income, using Form 05/KK-TNCN.
The quarterly declaration is generally due by the last day of the first month following the end of the quarter. For example, the PIT return for Q2 is generally due by the end of July.
Businesses should also ensure that PIT withheld from employees is paid within the applicable deadline and that payroll records, employee information and supporting documentation are maintained accurately.
Annual PIT finalization:
Employers must complete annual PIT finalisation where required, using the applicable finalisation forms under the current tax administration framework. For income-paying organisations, the annual finalisation deadline is generally the last day of the third month following the end of the calendar year.
For example, for a calendar-year employer, the deadline is generally 31 March of the following year, subject to the rules on deadlines falling on weekends or public holidays.
Tax Declaration Deadlines
FDI enterprises should closely track tax filing and payment timelines to avoid penalties and late payment interest:
Key deadlines
- Monthly filings: Due by the 20th of the following month (e.g., January filings due February 20). If the 20th falls on a weekend or public holiday, the deadline moves to the next working day. This typically applies to monthly VAT and monthly PIT.
- Quarterly filings: Due by the last day of the first month of the next quarter (e.g., Q1 due April 30). This covers quarterly VAT, quarterly PIT, and the provisional quarterly CIT payment (even though a quarterly CIT return is usually not required).
- Annual finalisation: Due by the last day of the third month after year-end. For calendar-year companies, the deadline is March 31 for CIT finalisation, PIT finalisation, and typically audited financial statements. Some annual compliance items (e.g., transfer pricing-related submissions) also follow this 90-day timeline.
- Foreign Contractor Tax (FCT): Generally within 10 days from each payment to the foreign contractor, or by the 20th of the next month if the company registers to declare monthly for frequent payments.
Payment timing matters
Tax payment deadlines generally align with the filing deadlines. Even if the return is submitted on time, late payment can trigger late payment interest (commonly 0.03% per day on the overdue amount).
Practical tip
Maintain a compliance calendar and set reminders 7–10 days in advance. Late filing can lead to fixed monetary penalties, and late payment accrues daily interest, so treat even a one-day delay as a compliance risk.
Documentation Requirements for Tax Reports
Accurate documentation is the backbone of effective tax reporting. FDI enterprises should maintain organised records and prepare the required documents for each tax report type:
Corporate Income Tax Finalisation Documents
FDI enterprises must maintain the documents and records needed to support their Corporate Income Tax (CIT) finalisation and reported figures.
Under Vietnam’s current CIT and tax administration rules, the CIT finalisation dossier should include the applicable CIT return and supporting schedules, along with records supporting taxable income, deductible expenses, tax incentives and carried-forward losses.
Where applicable, enterprises should also maintain related-party transaction disclosures and transfer pricing documentation. Relevant invoices, contracts, payment records and accounting documents should be retained to support the amounts reported.
Where statutory audit requirements apply, audited financial statements should also be maintained and reconciled with the tax records
Value-Added Tax Reporting Documents
Documentation requirements for VAT declarations depend on the VAT calculation method applied.
Under the credit method, enterprises must retain sales, purchase, and VAT invoices to support declared input and output VAT. Invoices are not submitted with the VAT return (Form 01/GTGT) but must be properly issued and kept for inspection. Where a VAT refund is claimed, a separate refund dossier is required, typically including invoice lists, contracts, payment records, and export documents.
Under the direct method on revenue, VAT is calculated as a percentage of gross revenue. Enterprises should retain sales records, contracts, and payment evidence supporting the reported revenue.
Under the direct method on value-added, mainly used for gold, silver, and precious stone trading, enterprises must keep documentation of total sales, purchase costs, and the value-added amount, supported by accounting records and invoices.
For multi-provincial operations, VAT allocation appendices must be submitted with the return, together with documentation explaining the allocation basis. In all cases, VAT payable should be reconciled with VAT paid, and any adjustments must be supported by proper documentation.
Electronic Tax Filing System in Vietnam
Most FDI enterprises are now required, or strongly encouraged, to file tax declarations and make tax payments electronically through Vietnam’s e-tax system.
Online Portal for Filing: The Department of Taxation e-Tax portal allows enterprises to submit VAT, CIT, PIT, FCT, and other tax filings online without visiting the tax office. After submission, the system issues an electronic receipt, which serves as official proof of timely filing.
Digital Signature Authentication: All online filings must be authenticated using a digital signature issued by a licensed certification authority. This ensures legal validity, verifies the taxpayer’s identity, and protects documents from alteration. Each tax return is digitally signed by the legal representative or an authorised person.
Real-Time Error Checks: The system includes real-time validation checks, flagging missing information or calculation errors before submission. This helps enterprises correct issues immediately and reduces the need for later amendments. For certain forms, automated calculations are also available, saving time and minimising arithmetic errors, though figures should still be reviewed carefully.
Payment Integration: The e-tax platform is integrated with banks, enabling electronic tax payments directly after filing. Payment status is updated in real time, helping enterprises track compliance and meet deadlines efficiently.
Transparency and Tracking: Each filing is assigned a transaction code, allowing companies to monitor submission status and access historical records. This transparency is useful for internal control and dispute resolution.
Overall, electronic tax filing improves efficiency, reduces paperwork, and limits in-person interactions. FDI enterprises should ensure staff are familiar with the system and keep backup records of submissions in case of technical issues near deadlines.
Common Tax Reporting Challenges and Solutions
Despite established systems, FDI enterprises often face practical challenges when preparing and submitting tax reports in Vietnam. Common issues and solutions include:
Language barriers:
Tax laws, forms, and e-filing systems are in Vietnamese, which can be difficult for foreign-managed companies. Misinterpretation may lead to reporting errors.
Solution: Use bilingual accountants or local tax consultants. Many FDI firms prepare reports in Vietnamese but review them internally in English to ensure both accuracy and management understanding.
Complex and frequently changing regulations:
Vietnam’s tax rules are detailed and regularly updated through new decrees and circulars, making compliance challenging.
Solution: Stay connected with tax advisors, subscribe to regulatory updates, and regularly update internal tax checklists and templates. Ongoing staff training helps ensure new rules are applied correctly.
E-filing technical issues:
System downtime, login problems, or digital signature errors can occur close to deadlines.
Solution: File early rather than waiting until the deadline. If issues arise, contact tax authority support immediately and document errors with screenshots. Keeping offline records ready provides an additional safeguard.
Group reporting coordination:
FDI enterprises within multinational groups must align local tax reporting with group-level requirements, such as transfer pricing or global tax reporting.
Solution: Reconcile tax and management accounts regularly throughout the year and use accounting systems that support tax tagging. Align local and group reporting formats where possible to reduce duplication.
By anticipating these challenges and applying practical solutions, FDI enterprises can manage tax compliance in Vietnam more smoothly and reduce the risk of errors or penalties.
Conclusion
Vietnam’s tax reporting requirements cover VAT, CIT, FCT and PIT, with specific filing deadlines and documentation requirements for each. For FDI enterprises, keeping track of current regulations, maintaining accurate records and meeting filing and payment deadlines are essential to staying compliant.
As Vietnam’s tax framework continues to evolve, businesses should regularly review their reporting processes and update them when new requirements take effect. Where requirements are complex or business circumstances change, local tax advice help ensure the right filings, documentation and payments are in place.
