Vietnam’s tax administration framework, governed by Law on Tax Administration No. 108/2025/QH15 (effective July 1, 2026, replacing Law No. 38/2019/QH14) alongside Decree 252/2026/ND-CP, regulates the entire lifecycle of corporate tax compliance. Within Vietnam’s corporate tax system, this framework governs all core categories: CIT, VAT, PIT, and FCT.
Effective July 1, 2026, Law on Tax Administration No. 108/2025/QH15 officially supersedes Law No. 38/2019/QH14, establishing unified digital tax governance, mandatory e-invoicing data integration under Decree 254/2026/ND-CP, and standardized debt enforcement protocols. Audits decided before July 1, 2026 continue under the previous law, while tax debts arising up to June 30, 2026 are handled under the new law. Foreign investors navigating Vietnam must understand the operational mechanisms, audit protocols, penalty exposure, and taxpayer safeguards governing enterprise administration.
1. Initial Tax Registration and Corporate Setup
1.1. Post-Licensing Tax Setup for New FDI Enterprises
Upon obtaining the Enterprise Registration Certificate (ERC), a newly incorporated foreign-invested company receives a unique 10-digit Enterprise Identification Code. Through the single-window mechanism linking the National Business Registration Portal with the tax authority’s database, this code serves simultaneously as the company’s Tax Identification Number (TIN) without a separate tax registration filing.
The corporate TIN comprises 10 digits for independent legal entities, or 13 digits for branches, representative offices, and business locations. Under Circular 90/2026/TT-BTC, this code remains valid throughout enterprise operations, terminating on dissolution, bankruptcy and the other grounds in that circular (such as revocation of the enterprise registration certificate, division or merger, or no activity at the registered address), and cannot be reissued to third parties.
The TIN is issued together with the ERC (Decree 252, Article 6), so no separate 10-day deadline applies to tax registration. After the ERC (the company registration process covers the licensing side), newly incorporated FDI enterprises complete these initial tax procedures:
- Opening Commercial Bank Accounts: Open a foreign investment capital account (formerly DICA) and VND operating accounts with licensed commercial banks in Vietnam, and register the account details through the National Business Registration Portal.
- Procuring Digital Signatures: Obtain certified public digital signature tokens (USB token or HSM) from licensed Certificate Authorities to authenticate electronic declarations and e-invoices.
- Activating eTax Accounts: Activate the corporate account on the tax authority’s eTax portal (thuedientu.gdt.gov.vn) and connect with the National Public Service Portal.
- Determining the VAT Calculation Method: Apply the credit deduction method where the VAT Law’s bookkeeping and invoice conditions are met, and file Form 01/GTGT each period to claim input VAT credits and refunds on qualifying exports and investment projects. Keep purchases of VND 5 million or more on non-cash payment so the credit survives (see the VAT non-cash payment rule); our tax refund service handles refund dossiers.
- Appointing Chief Accountant: Designate a qualified Chief Accountant meeting statutory standards under Accounting Law No. 88/2015/QH13 (see chief accountant requirements in Vietnam).
- Initializing Electronic Invoices: Register an authorized e-invoice transmission system via Form 01/ĐKTĐ-HĐĐT before commencing commercial billing operations.
1.2. Amending and Updating Tax Registration Particulars
Whenever an enterprise modifies legal particulars on its Enterprise Registration Certificate, the change reaches the tax authority through the business registration single window; taxpayers that registered directly with the tax office notify the change to that office within 10 working days.
For corporate adjustments involving the primary business license (such as changes to the head office address, legal representative, charter capital, equity ownership structure, or registered business lines), the amendment dossier is filed directly with the provincial business registration authority. Upon approval, updated data synchronizes automatically with the national tax database through the single-window interface. A move of the head office to another province or city that changes the supervising tax authority requires completing the tax authority transfer procedure before the new address is registered (Circular 90).
A taxpayer registering directly with the tax authority (such as a foreign contractor paying tax directly) must notify its supervising tax department of changes within 10 working days of the change (Decree 252; Form 08-MST). Failure to update corporate tax particulars within the prescribed timelines incurs administrative fines under Article 11 of Decree 125, ranging from VND 500,000 to VND 7,000,000 depending on the duration of delay.
1.3. Temporary Operational Suspension and TIN Termination
Foreign enterprises experiencing market restructuring or strategic reorganizations may elect to temporarily suspend business operations. The company notifies the business registration authority under the Law on Enterprises, and the competent authority sends the document to the managing tax authority within 3 working days of issuing it (Decree 252). A taxpayer registered directly with the tax authority notifies it at least one working day before the suspension, for up to 12 months per notice.
During an approved suspension period, the enterprise benefits from specific administrative reliefs:
- Exemption from Periodic Filings: The company is exempt from submitting monthly or quarterly VAT, CIT, or withholding tax returns for periods falling entirely within the approved suspension term.
- Maintenance of Outstanding Liabilities: Operational suspension does not extinguish or freeze pre-existing tax debts. The enterprise remains fully liable for settling all outstanding tax liabilities, late payment interest, and administrative penalties accrued prior to suspension.
- Annual Finalization Obligations: If the operational suspension does not cover an entire fiscal year, the enterprise must still compile and submit statutory annual financial statements, CIT finalization dossiers, and PIT annual reconciliations for the operational months of that fiscal year.
Upon corporate dissolution, the enterprise undergoes a comprehensive pre-dissolution tax audit for all uninspected fiscal years. The corporate TIN is terminated only after the enterprise has completed its e-invoice obligations and its tax return filing and tax payment obligations, including the treatment of overpaid tax and unrefunded VAT (Circular 90). A terminated corporate TIN cannot be reused for another taxpayer.
2. Periodic Tax Filing and Payment Architecture
2.1. Tax Filing and Payment Deadlines
FDI enterprises in Vietnam operate under a strict self-assessment tax regime. Taxpayers bear legal responsibility for calculating liabilities, submitting periodic returns, and remitting owed funds within the deadlines. Deadlines are unified across declarations and payments: the deadline for remitting tax into the State Treasury is identical to the final deadline for submitting the corresponding tax return:
| Tax Category / Obligation | Filing Frequency | Filing & Payment Deadline | Governing Form |
|---|---|---|---|
| Value Added Tax (VAT) - Monthly | Monthly | 20th day of the subsequent calendar month | Form 01/GTGT |
| Value Added Tax (VAT) - Quarterly | Quarterly | Last day of the first month of subsequent quarter | Form 01/GTGT |
| Provisional Corporate Income Tax (CIT) | Quarterly | Last day of the first month of subsequent quarter (cumulatively ≥ 80% annual CIT) | Electronic Tax Payment Voucher |
| Annual CIT Finalization Dossier | Annual | Last day of the 3rd month following fiscal year-end | Form 03/TNDN + Audited Financials |
| PIT Withholding on Salaries and Wages | Quarterly | Last day of the first month of subsequent quarter (monthly filing no longer available, Circular 89/2026/TT-BTC) | Form 05/KK-TNCN |
| Annual PIT Finalization Dossier | Annual | Last day of the 3rd month after the finalization period (income-paying organizations) or the 4th month after calendar year-end (individuals finalizing directly) | Form 05/QTT-TNCN |
| Foreign Contractor Tax (FCT) | Per-contract or Monthly | 10th day from the day after the tax obligation arises, or 20th day of the following month if registered for monthly filing | Form 01/NTNN (direct method) |
All corporate tax submissions must be executed electronically via thuedientu.gdt.gov.vn using certified digital signatures. A contractor paying FCT directly first needs a foreign contractor tax code. For a month-by-month tax view with the 2026–2027 weekend shifts, use the Vietnam tax compliance calendar; HR and social insurance dates sit in the annual compliance calendar.
Foreign-invested enterprises must file zero-value declarations even when no commercial transactions or taxable revenues arise during a tax period, apart from the cases exempted by Article 11 of Decree 252 (such as a suspension covering the whole filing period). A return that is not filed is recorded as late and may attract administrative fines.
2.2. Supplementary Tax Returns and Error Rectification
To encourage voluntary compliance, Vietnamese tax law provides enterprises with a self-correction mechanism. Under the Tax Administration Law, when an enterprise discovers errors, omissions, or computational discrepancies in previously submitted tax returns, it holds the legal right to file supplementary tax declarations within 5 years from the expiration of the original filing deadline (the period was 10 years under the previous law).
However, this right of error rectification is governed by strict procedural timing rules:
- Pre-Audit Safe Harbor: The supplementary declaration must be submitted, authenticated, and accepted on the eTax portal before the tax authority or competent auditing agency formally announces a tax audit or tax inspection decision at the taxpayer’s premises.
- Penalty Immunity: When an enterprise proactively files supplementary returns that increase tax liabilities prior to an official inspection decision, the company must remit the additional tax balance alongside accrued late payment interest (0.03% per day). The enterprise is not subject to administrative penalties for the under-declaration under the Tax Administration Law and Decree 125, provided the additional tax is paid in full before the decision is announced.
- Audit Decision Cutoff: Once an official tax examination or inspection decision is announced at the corporate office, taxpayers forfeit the right to submit supplementary returns for the specific tax categories and fiscal periods designated within the audit scope. Any tax deficiencies uncovered during the audit may be penalized at 20% of the under-declared tax or at 1 to 3 times the evaded tax, depending on the violation, plus late payment interest.
2.3. Tax Payment Obligations and Late Payment Calculation
Tax liabilities must be remitted directly into the State Treasury through authorized commercial banking channels, electronic payment gateways, or direct treasury transfers. The effective payment date is legally recognized as the exact date on which the commercial bank or payment intermediary confirms successful debit from the taxpayer’s account, generating a valid electronic tax payment voucher.
Under the Tax Administration Law, unpaid tax debts incur late payment interest calculated strictly at 0.03% per day on the outstanding balance:
For example, an enterprise with an overdue CIT balance of VND 2,000,000,000 for 90 days incurs VND 54,000,000 in late payment interest (VND 2,000,000,000 × 0.03% × 90). Because late payment interest accrues without an upper ceiling, lingering tax liabilities accumulate significant financial exposure. An enterprise that suffers material damage directly affecting its production and business may obtain a 2-year extension of tax payment from the date of the event, without late payment interest during the extension (Decree 252).
3. Mandatory Electronic Invoicing
E-invoices are the technical backbone of Vietnam’s tax administration. Without a valid, electronically verified invoice, you cannot deduct the expense for CIT or recover input VAT, and the tax authority cross-checks invoice data against your returns. Since July 1, 2026, Decree 254/2026/ND-CP and Circular 91/2026/TT-BTC govern invoicing, and issuing an invoice at the wrong time attracts penalties under Decree 125. Registration, cash-register invoices, error correction and penalty tiers are in our e-invoice registration guide for FDI.
4. Tax Audits, Desk Examinations, and Enforcement
4.1. Procedural Distinctions: Desk Examination vs. Comprehensive Tax Inspection
Vietnamese tax legislation establishes a clear operational distinction between routine tax examinations conducted at the tax office or taxpayer premises, and comprehensive field tax inspections:
| Comparative Metric | Desk / Field Examination at Taxpayer Office | Comprehensive Tax Inspection at Enterprise |
|---|---|---|
| Grounds | Return discrepancies, data-based risk classification, tax refund claims | Annual thematic inspection plans or verified indications of violations |
| Audit Scope | Targeted specific tax categories, isolated reporting periods, or transactions | Comprehensive: all corporate taxes across multiple consecutive fiscal years |
| Duration Limit | At the tax office: the taxpayer has 10 working days to explain after each notice, and the tax authority may issue up to 2 notices (Circular 89). At the taxpayer’s premises: up to 20 days from the announcement of the decision (excluding suspension time), extendable once by up to 20 days; 40 and 40 days where related-party transactions exist | Set by the Law on Inspection 84/2025/QH15: up to 45 days for a provincial inspectorate (extendable by 25 days) and 60 days for the Government Inspectorate (extendable twice); the Tax Administration Law no longer fixes 45 or 70-day limits |
| Notice Requirement | Decision sent within 3 working days of signing, announced within 10 working days of issuance (Circular 89) | Governed by inspection law |
| Competent Authority | Local Tax Office or Provincial/Municipal Tax Office managing the taxpayer | Competent inspectorate under the Law on Inspection (the tax authority refers the file to it) |
4.2. Common Audit Triggers for Foreign-Invested Enterprises
The tax authority classifies risk on the basis of data. Five signs commonly bring foreign-invested companies into an audit:
- Chronic Operational Losses with Physical Expansion: Reporting consecutive fiscal years of accounting or tax losses while simultaneously expanding factory capacity, acquiring fixed assets, or increasing registered charter capital.
- Extensive Related-Party Transactions: Substantial transaction volumes with offshore parent companies or affiliated group members involving management fees, technical royalties, software licenses, intra-group financing, or high-volume raw material procurement, triggering transfer pricing audit scrutiny.
- High-Value VAT Refund Claims: Submitting extensive input VAT refund applications where supplier networks demonstrate high risk indicators or rapid corporate turnover.
- Inadequate Corporate Tax Incentive Segregation: Claiming CIT tax holidays or preferential rates without strictly segregating incentivized operating revenue, non-incentivized auxiliary income, and external financing revenues into separate accounting ledgers.
- Discrepancies Between Electronic Invoices and Bank Flows: Material mismatches between gross revenues reported on periodic e-invoices and actual deposit turnover recorded on corporate bank accounts registered with the tax authority.
4.3. Penalty Framework under Decree 125/2020/ND-CP
Administrative penalties for non-compliance with tax administration and e-invoicing laws are set under the Tax Administration Law and Decree 125/2020/ND-CP (as amended by Decree 310/2025/ND-CP):
1. Tiered Penalties for Late Filing of Tax Returns (Article 13, Decree 125; organization rates, individuals and household businesses pay half):
- Late by 1 to 5 days: Warning if mitigating circumstances apply.
- Late by 1 to 30 days: Fine from VND 2,000,000 to 5,000,000 (except where a warning applies).
- Late by 31 to 60 days: Fine from VND 5,000,000 to 8,000,000.
- Late by 61 to 90 days: Fine from VND 8,000,000 to 15,000,000 (or over 90 days with no tax liability arising).
- Late by over 90 days: Fine from VND 15,000,000 to 25,000,000 where tax liability arises and the taxpayer has paid all tax and late payment interest prior to inspection announcement.
2. Other Violation Penalties:
| Violation Category | Administrative Penalty Range | Governing Reference |
|---|---|---|
| Incorrect declarations resulting in deficient tax payment | Fixed penalty equal to 20% of deficient tax + 0.03%/day late interest | Tax Administration Law |
| Deliberate tax evasion or fraudulent accounting practices (including filing a return more than 90 days late that understates tax) | Penalty from 1 to 3 times the total amount of evaded tax liability | Tax Administration Law |
| Late payment of assessed tax debts and administrative fines | Daily late payment interest of 0.03% on overdue balance | Tax Administration Law |
| Issuing electronic invoices at improper timing | By number of invoices: VND 500,000 to VND 70,000,000 (organization rate) | Decree 125, Article 24 |
| Failure to issue electronic invoices upon supply of goods/services | By number of invoices: VND 1,000,000 to VND 80,000,000 (organization rate) | Decree 125, Article 24 |
The limitation period is 2 years for procedural violations and 5 years for tax under-declarations and tax evasion short of criminal liability (Article 44 of the Tax Administration Law). Once that period lapses, you avoid the penalty but still owe the unpaid tax, evaded tax and late-payment interest for the preceding 10 years from the date the violation is found. Unregistered taxpayers owe for the full period.
4.4. Eight Tax Debt Enforcement Measures
When an enterprise remains in tax arrears more than 90 days after the payment deadline, or falls under other cases under the Tax Administration Law (such as arrears after an extension expires, or no activity at the registered address), tax authorities may apply the enforcement measures below under the Tax Administration Law and Decree 252:
- Bank Account Debit and Freezing: Tax authorities direct commercial banks to debit overdue tax debts directly from corporate accounts or freeze operating balances.
- Salary Withholding: Applied against individual taxpayers drawing a regular income.
- Customs Clearance Suspension: Halting customs clearance for raw material imports and finished export shipments.
- Revocation of E-Invoice Rights: Invoicing authentication is suspended on the national e-invoice network, paralyzing commercial billing operations.
- Asset Seizure and Auction: Distraining corporate property, equipment, or vehicles to recover tax liabilities via public auction.
- Third-Party Asset Recovery: Requiring commercial debtors holding corporate funds to remit balances directly into the State Treasury.
- Revocation of Enterprise Registration: Revoking the corporate ERC or IRC, forcing enterprise dissolution.
- Bankruptcy Petition: Filing an application to open bankruptcy proceedings against the debtor.
4.5. Exit Suspension and International Travel Bans for Enterprise Leadership
International travel restrictions are strictly applied against executive personnel linked to corporate tax arrears under an integrated legal basis:
- Legal Basis: Governed by the Tax Administration Law and Decree 252, combined with the Law on Entry and Exit of Vietnamese Citizens No. 49/2019/QH14 and the Law on Entry, Exit, Transit, and Residence of Foreigners in Vietnam No. 47/2014/QH13.
- Targeted Corporate Personnel: Travel bans apply directly to individuals registered as the legal representative or verified as the Ultimate Beneficial Owner (UBO) of enterprises subject to tax enforcement that carry overdue tax debts of VND 500 million or greater that remain unpaid for 120 calendar days or more past the due date under Decree 252.
- Entities Not Operating at Their Registered Address: For enterprises that have abandoned registered business premises, exit suspension applies when 120 days after the tax authority’s notice the company has neither restored nor terminated its tax code.
- Mandatory 30-Day Prior Notification: For enterprises and business households, the supervising tax authority must notify the taxpayer via the eTax portal at least 30 calendar days before transmitting the formal exit suspension request to the Immigration Department under the Ministry of Public Security.
- Immediate Administrative Rescission: For legal representatives and beneficial owners of enterprises, exit suspension is rescinded immediately once the remaining debt falls below VND 500 million or is written off; where the enterprise was reported as not operating at its registered address, the suspension lifts only after the tax code is restored, missing returns are filed and the debt falls below the threshold; for foreign individuals it is rescinded once the tax obligation is fulfilled.
4.6. Taxpayer Rights During Tax Audits
Vietnamese law establishes clear protections to safeguard enterprise rights during tax audits:
- Right to Written Explanations and Appeal: Enterprises may request written clarification of assessment grounds and expense disallowances, file a complaint within 90 days of receiving the decision (Law on Complaints), or petition the Administrative Court.
- Commercial Confidentiality Protection: Tax officers are legally required to maintain strict confidentiality regarding corporate accounting data, proprietary processes, and trade secrets.
- Right to Refuse Unrelated Requests: Taxpayers may decline to provide information or documents unrelated to the content of the audit, unless other laws provide otherwise (Law on Tax Administration 108/2025/QH15).
- Right to Professional Representation: Enterprises may engage certified tax advisors or legal counsel to participate in audit hearings, coordinate submissions, and draft formal rebuttal briefs.
Compliance Notice (2026 Tax Administration Transition): Effective July 1, 2026, Law on Tax Administration officially replaces the previous law. Standardized debt recovery protocols and executive travel restrictions for tax arrears of VND 500 million or more are governed under Decree 252/2026/ND-CP. Penalty amounts are set by the Tax Administration Law and Decree 125 (which remains in force under Decree 252), while e-invoicing standards operate pursuant to Decree 254. Foreign-invested enterprises should execute periodic internal tax health checks to rectify inadvertent filing errors, eliminate penalty exposure, and safeguard corporate leadership from cross-border travel disruptions.
Indochina Link Vietnam provides specialized tax compliance and regulatory defense services for foreign-invested enterprises: periodic eTax management, annual CIT and PIT finalization reporting, transfer pricing documentation, pre-audit defense reviews, and direct representation before tax authorities. Contact our corporate tax team to establish an audit-ready compliance framework.
Related guidance: Profit repatriation | Expatriate PIT finalization | Accounting setup and compliance
Guidance referenced from Law on Tax Administration No. 108/2025/QH15 (replacing Law No. 38/2019/QH14 from July 1, 2026), Decree 252/2026/ND-CP, Decree 254/2026/ND-CP, Decree 125/2020/ND-CP (amended by Decree 310/2025/ND-CP), and Circulars 89/2026/TT-BTC and 90/2026/TT-BTC of the Ministry of Finance. Multinational corporations and foreign investors should consult certified tax specialists for situational assessments.
