Vietnam’s New Tax Law Lists 10 Prohibited Practices. Here’s What It Means for Business.
Law No. 108/2025/QH15 takes effect October 1, 2025, giving authorities sharper digital tools to target VAT fraud and illegal invoice trading.
Something shifted in Vietnam’s regulatory landscape, and if you run a business there, you need to pay attention now rather than later.
Law No. 108/2025/QH15, the revised Tax Administration Law 2025, comes into force on October 1, 2025. It does not simply update existing frameworks. It fundamentally redraws the boundaries of what constitutes prohibited tax practices and hands authorities significantly expanded powers to detect violations. For foreign invested enterprises operating across Vietnam’s manufacturing corridors and commercial hubs, the compliance environment just became considerably more demanding.
The timing matters. Vietnam continues to attract substantial foreign direct investment, particularly in electronics, textiles, and emerging tech sectors. That capital inflow has also brought sophistication to tax planning, and not all of it has been above board. This law represents Hanoi’s clearest signal yet that the era of loose enforcement is ending.
Ten Categories of Conduct Now Explicitly Off Limits
At the core of Law No. 108/2025/QH15 sits a detailed enumeration of 10 categories of prohibited conduct. These restrictions apply broadly. Taxpayers, tax officials, public servants, and organizations involved in tax administration all fall within scope.
The law presumes that enterprises operating in Vietnam understand their obligations.
The list covers expected territory like fraudulent declarations and evasion schemes. But it also addresses less obvious violations, including collusion between taxpayers and officials, obstruction of tax authorities during investigations, and misuse of taxpayer information. The breadth suggests legislators intended to close gaps that had allowed certain practices to persist in grey zones.
For businesses, the critical point is this: ignorance of a violation’s prohibited status offers no defense. Internal compliance programs need updating accordingly.
Why VAT Fraud and Illegal Invoice Trading Are Now Priority Targets
Two enforcement priorities dominate the regulatory conversation surrounding the Tax Administration Law 2025: VAT fraud and illegal invoice trading.
Vietnam’s shift to mandatory electronic invoices created a digital trail that previous paper based systems lacked. Authorities now possess real time access to invoice data across jurisdictions. The law formalizes inter agency information sharing protocols, meaning tax authorities can coordinate with customs, banking regulators, and provincial governments far more efficiently than before.
Data analytics capabilities have expanded in parallel. Pattern recognition tools flag anomalies in invoice issuance, unusual supplier relationships, and discrepancies between declared revenues and actual economic activity. The infrastructure for detection has, in practical terms, leapfrogged enforcement capacity.
Illegal invoice trading, historically used to inflate input VAT credits or fabricate deductible expenses, faces particular scrutiny. Entire networks of shell companies issuing fraudulent electronic invoices have emerged in recent years. The law’s drafters clearly had these schemes in mind when designing expanded investigation authorities.
What This Means for Foreign Invested Enterprises
FIEs face elevated exposure under the new framework. Not because the law targets foreign ownership specifically, but because foreign invested enterprises often operate complex supply chains involving numerous Vietnamese suppliers, subcontractors, and service providers. Each relationship represents a potential compliance vulnerability.
Consider the scenario where a legitimate manufacturer unknowingly accepts invoices from a supplier engaged in illegal invoice trading. Under intensified enforcement, that manufacturer may find itself drawn into an investigation, facing documentation requests, operational disruptions, and reputational consequences even if no intentional wrongdoing occurred.
The compliance burden has shifted. Passive reliance on supplier representations no longer constitutes adequate due diligence. Active verification of electronic invoice authenticity through Vietnam’s official invoice lookup systems becomes essential operational practice.
Practical Responses Worth Implementing Now
Four concrete steps warrant immediate attention for businesses operating in Vietnam or planning market entry.
First, strengthen internal tax controls. Review existing procedures for invoice handling, expense recognition, and VAT credit claims. Ensure segregation of duties prevents any single employee from creating compliance gaps without oversight.
Second, implement rigorous supplier due diligence. This extends beyond checking tax registration status. Investigate whether suppliers have been flagged in prior enforcement actions, verify their physical operations match declared business activities, and assess whether pricing aligns with market norms. Anomalously low prices sometimes indicate invoice trading arrangements upstream.
Third, validate electronic invoice authenticity systematically. Vietnam’s General Department of Taxation maintains lookup tools for invoice verification. Building verification protocols into accounts payable workflows catches problematic invoices before they contaminate your books.
Fourth, tighten accounting and reporting practices. The law grants authorities expanded access to company records during investigations. Documentation that appeared adequate under previous enforcement intensity may prove insufficient under heightened scrutiny. Contemporaneous, detailed records demonstrating good faith compliance become protective assets.
The Enforcement Trajectory Ahead
Authorities now possess both legal authority and digital infrastructure to pursue violations at scale. The combination of electronic invoice databases, inter agency data sharing, and analytics driven targeting means detection likelihood has increased materially.
Some public reports cited differing effective dates for the law’s implementation. October 1, 2025 represents the confirmed effective date based on official legislative records. Businesses should plan against that timeline regardless of any conflicting information encountered elsewhere.
Enforcement outcomes remain difficult to predict with precision. What seems clear is that the risk profile for tax compliance in Vietnam has elevated. Penalties for violations under the new framework carry both financial consequences and potential criminal liability for serious offenses. Reputational damage in a market where relationship networks remain central to business development adds another layer of exposure.
A Compliance Culture, Not Just a Compliance Checklist
The temptation exists to treat Law No. 108/2025/QH15 as a box checking exercise. Update some procedures, run some supplier checks, move on.
That approach misses the larger shift underway. Vietnam’s tax authorities are building institutional capacity for sustained, technology enabled enforcement. This law represents one milestone in that trajectory, not the destination. Enterprises that embed genuine tax compliance into operational culture, rather than treating it as periodic audit preparation, position themselves for long term stability.
The businesses that thrive in Vietnam over the coming decade will be those that recognized this moment for what it is. A turning point in regulatory maturity that rewards transparency and punishes opacity.
October arrives faster than most planning cycles accommodate. The time to act is now.
