Tax Audits in Vietnam vs China: A Practical Comparison
Many companies run Vietnam–China chains (a Chinese parent, a Vietnamese factory, or vice versa) and face tax audits in both countries — each with its own "rules of the game". This practical comparison helps legal/accounting teams prepare correctly for both.
1. Legal framework in each country
Vietnam: the Law on Tax Administration 108/2025/QH15 (effective 1/7/2026) is the main framework for tax audits, examinations, and the rights and obligations of taxpayers and tax authorities. Detailed guidance continues to be issued alongside.
China: tax administration by tax authorities at all levels under Chinese tax law, characterized by very deep data digitalization (e-invoicing and centralized analytics). The China comparison here states general systemic principles — each specific case needs Chinese counsel.
2. Who audits? Authority and procedure
Vietnam: on-site tax audits proceed on the basis of an audit decision — stating scope, period and duration. Tax examinations may occur at the tax office or the taxpayer's premises. The team may demand books, records and data; the taxpayer may require presentation of the decision and monitor compliance with its scope.
China: tax authorities likewise audit at the enterprise under a decision, with similar powers to demand records. The difference: before "coming down", Chinese authorities typically analyze data remotely through the centralized system — so when the team arrives, it usually already has a specific "question list".
3. Quick comparison
| Criterion | Vietnam | China |
|---|---|---|
| Framework | Law on Tax Administration 108/2025 (eff. 1/7/2026) | Chinese tax law (principle reference) |
| Basis | Audit/examination decision | Audit/examination decision |
| Data digitalization | Expanding e-invoicing, risk management | Very deep: e-invoicing + centralized data (Golden Tax) |
| Remote risk analysis | Yes, developing | Routine before audits |
| Sanctions | Back tax + administrative penalties | Back tax + penalties (general principle) |
| Appeals | Administrative complaint / administrative lawsuit | Administrative reconsideration / administrative litigation |
4. The biggest practical difference
How much the authority "knows in advance". In China, centralized data lets the authority cross-check input–output invoices, cash flows and filings across chains — before deciding to audit. Companies are often "named" because data already diverges. In Vietnam, risk management and e-invoicing are developing fast in the same direction, but remote-analysis data depth isn't there yet.
Lesson for two-country firms: don't wait for an audit decision to review. Periodically self-checking data consistency (invoices — filings — books — bank flows) is the most effective defense in both systems.
5. Preparation checklist on receiving an audit decision
- Read the decision carefully: audit scope (which taxes), audit period, working duration. Any request beyond the decision can be declined or met with a request for a supplementary decision.
- Check limitation: whether the audit period is still within penalty/back-tax limitation — expiry is complaint grounds.
- Prepare dossiers: accounting books, records, contracts, filings, related-party and transfer-pricing documentation (if any).
- Designate a contact: an authorized person who understands the numbers, one single document-supply channel — avoid everyone speaking differently.
- Record minutes: reconcile each item before signing working minutes; note reservations on disputed items.
- Never destroy or alter records after an audit decision — an aggravating circumstance in both countries.
6. Disagreeing with the conclusion: where to appeal?
Vietnam: administrative complaint against the tax decision (first to the issuer or its superior) or an administrative lawsuit in court.
China: administrative reconsideration and administrative litigation under Chinese law.
General note: in both countries, some cases require paying the assessed tax/penalties before a complaint or suit is accepted — check admissibility conditions before choosing the appeal route.
8. Document retention and evidence strategy
A tax inspection is won or lost in the archive room. Vietnam and China both require 10-year retention of accounting books and tax dossiers as a baseline, but the practical risks differ.
In Vietnam, the decisive documents are e-invoices (now mandatory and cross-checked automatically against the buyer's input claims), transfer pricing documentation (master file, local file, and CbCR for large groups — missing files draw automatic adjustments), and payroll records reconciling PIT finalizations with social insurance contributions. The most common Vietnamese finding is a mismatch the company's own filings created: revenue declared for VAT but not for CIT, or salaries expensed for CIT but never subjected to PIT. Reconcile the three tax returns against the audited financial statements before the inspectors do — every unexplained gap becomes an assessment.
In China, expect deeper scrutiny of fapiao chains and related-party pricing, plus the "Golden Tax" big-data system that flags anomalies (e.g., input fapiao without matching logistics records) before a human auditor is even assigned. Chinese subsidiaries should keep contracts, delivery notes, and payment vouchers stapled to each fapiao — the fapiao alone is no longer enough.
For groups operating in both countries: keep a single transfer pricing policy applied consistently, because inconsistent margins between the Vietnamese and Chinese entities invite both tax authorities to claim the profit. And never destroy or "reorganize" documents after receiving the inspection decision — obstruction carries separate penalties in both jurisdictions.
Practical note: When inspectors arrive, designate a single liaison and log every document handed over with a signed receipt. It prevents “we never received it” disputes and keeps the inspection within its legal scope and timeline. Also note the inspection time limit: fieldwork beyond the statutory period requires formal extension, which you can and should verify.
7. FAQ
Q: Which authority conducts tax audits in Vietnam?
A: Tax authorities at all levels under the Law on Tax Administration 108/2025 (effective 1/7/2026), on the basis of an audit decision stating scope, period and duration. Taxpayers may require presentation of the decision.
Q: How do Chinese tax audits differ?
A: Principles are similar (audit decisions, record powers, back tax + penalties). The biggest practical difference is data digitalization depth: China analyzes risk remotely in depth before visiting.
Q: How should an FDI company prepare?
A: Review the decision (scope, period, duration); prepare books, records, transfer-pricing files; designate one contact; reconcile minutes carefully before signing. Never destroy/alter records.
Q: Is there a limitation period?
A: Yes — both countries set limitation periods for penalties/back tax. Expiry is complaint grounds; check upon receiving the decision.
Q: What if I disagree with the conclusion?
A: Vietnam: administrative complaint or administrative lawsuit. China: administrative reconsideration or administrative litigation. Note possible pay-first admissibility conditions.
References
- Law on Tax Administration 108/2025/QH15 (effective 1/7/2026).
- Chinese tax law — general-principle reference for comparison; specific cases need Chinese counsel.
- Cross-checked via thuvienphapluat.vn at drafting (28/9/2026).
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