Overview
Vietnam’s Ministry of Finance is consulting on a draft Decree on electronic invoices (“e-invoices“) and related electronic documents (“Draft Decree“), which is expected to replace and consolidate the current regulatory framework. The Draft Decree goes beyond technical amendments and reflects a broader move towards a modernised and data-driven tax administration, with greater emphasis on connected systems, electronic data and digital compliance processes. For businesses, this may have implications across systems, internal controls, workflows and vendor arrangements.
E-invoice compliance is therefore becoming not only a tax and accounting issue, but also an operational and technology issue requiring coordination across tax, legal, finance and information technology (IT) functions. This is consistent with the Draft Decree’s structure, which addresses invoice issuance, data transmission, system access, information use, service providers and responsibilities of relevant parties.
A More System-based Approach to E-invoicing
Under the Draft Decree, e-invoices appear to form part of a broader tax information framework rather than serving merely as standalone accounting records. Invoice data may increasingly be transmitted, verified and managed through connected systems, reflecting a more system-based and data-driven approach to tax administration. The explanatory materials also emphasise modernisation, digital transformation, data connection and more effective tax management through electronic systems.
Businesses will therefore need to ensure that invoice data is accurate, complete and consistent across relevant internal systems and external platforms.
Expanded System and Data Obligations
The Draft Decree reinforces the importance of system integration, data integrity and electronic information flows. It contains provisions not only on invoice issuance, but also on connection, transmission, receipt, storage, access, use and sharing of e-invoice information. From a business perspective, this may increase reliance on Enterprise Resource Planning (“ERP“), Point of Sale (“POS“) and invoicing system integration, and may require workflow adjustments where invoice data is generated, transmitted or reconciled across multiple functions.
Businesses should therefore assess whether their current systems can capture, reconcile and transmit invoice data consistently across different business functions.
Classification of Invoicing Models
The Draft Decree continues to distinguish between different invoicing models, including e-invoices with tax authority codes, e-invoices without such codes and e-invoices generated from cash registers or POS systems. It also maintains separate rules on when different models apply and when certain taxpayers are not required to use e-invoices.
In practice, businesses may still face uncertainty in determining which model is most appropriate for a given business line or sales channel, especially in retail, food and beverage, chain-store and multi-channel operations. This remains a practical implementation issue even where the legal categories are set out in the Draft Decree.
POS-based E-invoices and Practical Implementation
The Draft Decree places greater emphasis on connected POS invoicing and on the consistency of transaction data transmitted to the tax authority’s systems. It also retains a dedicated framework for invoices generated from cash registers connected for electronic data transmission.
For businesses, implementation issues may extend beyond legal classification. Practical challenges may include device investment, software integration, staff handling consistency, returns, cancellations, post-sale adjustments and transactions conducted offline and synchronised later. Businesses in retail and other consumer-facing sectors should consider whether their current operating model can support these requirements.
Post-issuance Corrections
The Draft Decree and supporting materials address correction, replacement and handling of invoices that have already been issued, and the administrative assessment materials identify correction and replacement of e-invoices as a key part of the procedural framework.
Even so, businesses may still face practical uncertainty in day-to-day operations when dealing with post-issuance errors, including incorrect buyer details, amounts, tax rates or later changes to customer information. This remains an area where clearer operational guidance and internal workflows will be important.
Potential Implications for E-commerce Platforms
A notable proposal in the Draft Decree appears to require certain e-commerce platform operators to issue e-invoices to buyers, on behalf of individual or household sellers, where the buyer requests an invoice. The Draft Decree and supporting materials also reflect this proposed treatment in the group of cases where certain sellers would otherwise not be required to use e-invoices.
If retained in the final decree, this could increase operational and compliance burdens for affected platforms, including invoice issuance, corrections, cancellations and data coordination with sellers. At the same time, because the administrative assessment suggests limited compliance-cost impact while stakeholder submissions have argued otherwise, this point is best framed as a significant proposed change rather than a settled outcome.
System Failures and Delayed Transmission
The Draft Decree and explanatory materials also address technical disruptions and incidents in the e-invoicing process, including cases involving system failures, transmission issues and temporary inability to send data to the tax authority.
Businesses should therefore have internal procedures for documenting outages, preserving logs, coordinating with service providers and managing delayed transmission scenarios. However, it would be safer not to assume that the Draft Decree already establishes a comprehensive liability safe harbour for all system-related or third-party failures. Businesses should instead focus on evidence retention, incident response and clear contractual allocation of responsibility.
Service Providers and Allocation of Responsibility
The Draft Decree contains a detailed framework for organisations providing e-invoice services, including technical, operational and connectivity requirements and responsibilities relating to transmission, receipt, storage and data handling.
Businesses should review whether current vendors can support the anticipated compliance model and whether contracts adequately address outages, support obligations, data retention, service levels and responsibility allocation. Vendor management may therefore become an increasingly important part of e-invoice compliance.
Data Protection and Data Handling
Although the Draft Decree is primarily a tax-administration instrument, its emphasis on connected systems, electronic data flows and use of invoice information means businesses should also consider data handling implications, especially where invoice data is processed across multiple systems or by third-party providers.
This is particularly relevant in consumer-facing sectors and in businesses that rely on outsourced technology or group-wide system infrastructure.
Key Actions for Businesses
In light of the Draft Decree, businesses should consider:
- Reviewing invoicing systems and data flows to ensure that ERP, POS and invoicing tools can support the relevant transmission, reconciliation and record-keeping requirements;
- Mapping invoicing models across business lines to determine which model may apply to each sales channel, operating unit or transaction type;
- Testing correction and incident-response workflows to prepare for post-issuance errors, technical disruptions and delayed transmission scenarios;
- Reviewing vendor contracts and service levels to clarify responsibility for outages, support obligations, data retention and system-related failures; and
- Monitoring developments affecting platform-based transactions especially where the business operates or relies on e-commerce platforms, marketplaces or payment-enabled online channels.
Concluding Words
The Draft Decree signals a broader move towards a system-based and data-driven tax administration. For businesses, the implications are not limited to legal interpretation, but extend to systems, internal processes, vendor coordination and operational controls. The core direction of travel in the Draft Decree is clear, even if some implementation issues and policy choices may still evolve during consultation.
Early review of systems, workflows and contractual arrangements will help businesses prepare more effectively for the final regime.
How we can Help
Rajah & Tann LCT Lawyers is closely monitoring the Draft Decree and related consultation process. We can assist businesses in assessing its impact on invoicing models, operations, vendor arrangements and compliance readiness.
Contribution Note
This Update was authored by Dr. Chau Huy Quang, Mr. Cao Dang Duy, and Dr. Le Hong Phuc (also a lecturer at Phenikaa University).
For regional Tax matters, please see Rajah & Tann Asia’s Regional Tax Practice for more information.
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