Vietnam E-Invoicing: What Businesses Need to Set Up and Maintain

A Vietnam e-invoice programme is not simply a document template or a software switch. It is the operating link between a sale, the supporting commercial evidence, accounting records, VAT treatment and the information sent to the buyer and tax authority. That is why an entity that begins with clean master data, clear ownership and a tested exception process is better placed than one that starts by selecting a template at the first sale. The current framework also matters: Decree No. 254/2026/NĐ-CP and Circular No. 91/2026/TT-BTC both took effect on 1 July 2026. 24

Direct answer: Vietnam’s current e-invoice framework is Decree No. 254/2026/NĐ-CP and Circular No. 91/2026/TT-BTC, effective from 1 July 2026. Businesses should complete the required registration and establish invoice route, data, approval and timing controls before issuing. Sellers generally issue an e-invoice when selling goods or services, but specific Article 7 non-use cases and route conditions mean that the correct set-up depends on the transaction and business model. 234

KEY TAKEAWAYS

Old guides built around Decree 123/2020/NĐ-CP or Circular 32/2025/TT-BTC need a current-law check: Decree 254 and Circular 91 took effect on 1 July 2026. 24; Article 6 offers different invoice routes. Tax-authority-code, no-code and cash-register routes depend on the seller, sector, systems and risk conditions; incorporated companies should not borrow household thresholds. 3; For goods, invoice timing is generally tied to transfer of ownership or use. For services, it is generally tied to completion or payment in advance/during performance, subject to stated exceptions. 6; An error process must be designed around current Circular 91 procedures. “Cancel and reissue” is not a safe universal instruction. 45; Finance leaders should reconcile invoices to contracts, operational evidence, books and tax reporting—not treat e-invoicing as a stand-alone IT workflow. 128

Start with the 2026 framework, not a legacy implementation checklist

The first set-up decision is to identify the legal framework that applies now. Law No. 108/2025/QH15 established the current tax-administration architecture from 1 July 2026. Decree 254 is the controlling decree for electronic invoices and electronic documents under that law, while Circular 91 supplies detailed implementation rules. Decree 254 also ended the earlier principal e-invoice regime under Decree 123/2020/NĐ-CP, with specific transition provisions rather than a reason to discard historic records. 124

For an overseas controller, the practical consequence is straightforward: do not ask a provider or local team whether the company “has e-invoicing” in the abstract. Ask which current rule set, registered route, system configuration and operating evidence support each invoice type. A business may have a functioning legacy template and still need a documented review of its master data, authorisation, error process or integration logic under the current framework. This is a governance exercise, not an invitation to rebuild everything without checking the transition rules. 24

Vietnam uses the term hóa đơn điện tử for an electronic invoice. In this guide, “e-invoice” means the electronic invoice governed by the current Vietnamese tax-administration framework. It is distinct from a purchase order, contract, delivery record, bank confirmation or accounting voucher. Those records may support the underlying transaction, but they do not automatically replace an invoice where the seller must issue one. 268

The general rule in Article 4 is that, when selling goods or providing services, a seller must prepare an e-invoice for the buyer, including certain promotional, internal-consumption and other listed situations, except for the Decree’s Article 7 non-use cases. That wording is why “all transactions” and “virtually all businesses” are poor operating instructions. The scope is broad, but the exceptions are defined and transaction-specific. 236

Related reading: Vietnam VAT guide for foreign-invested companies, Article 34.

Choose the e-invoice route before configuring software

The applicable route should be reviewed before invoices are generated in volume. Article 6 distinguishes, among other categories, e-invoices with a tax authority code, no-code e-invoices for qualifying digitally capable users in named sectors, and e-invoices generated from cash registers for specified direct-to-consumer activity. The choice is not a branding preference or a generic “B2B versus B2C” test. It turns on the seller’s legal and operational facts, the statutory category and the conditions attached to it. 23

Figure 2. Initial e-invoice routing review. This decision tree is a starting point for analysis, not a self-certification or registration outcome. Original visual created from cited data. 2 3

For many incorporated businesses, the tax-authority-code route is the first route to test. The Government’s Article 6 guidance describes economic organisations, other organisations, household businesses and business individuals using e-invoices with a tax authority code when selling goods or services, subject to the decree’s stated carve-outs and risk rules. Treat this as a legal starting point, not a rule that eliminates the need to verify the entity’s registration status and actual transactions. 3

A no-code route is more constrained. Article 6 guidance lists sectors such as electricity, petroleum, postal and telecommunications services, water, finance and banking, securities, insurance, healthcare, e-commerce, retail and several transport activities. It also refers to electronic dealings with the tax authority, IT infrastructure, accounting and e-invoice software, lookup and storage capability, and the ability to transmit data to buyers and the tax authority. A company should document how it meets the relevant conditions rather than infer eligibility from its industry label alone. 3

Cash-register-generated e-invoices are relevant to specified businesses that sell directly to consumers, including categories such as shopping centres, supermarkets, retail, food and beverage, hotels, passenger transport, entertainment and personal services. The same guidance states that a business already registered under the other Article 6 routes is not automatically required to register for the cash-register route. This means a point-of-sale deployment should be designed around the registered route, not treated as a separate invoice universe. 3

Household and individual business rules require separate attention. Article 6 includes a VND 1 billion annual-revenue trigger for particular household and individual businesses, as well as a rule for those selling property requiring registration. Those are not general thresholds for an incorporated company or a foreign-invested entity. Finance teams should resist importing a memorable small-business threshold into the company’s e-invoice decision memo. 3

A practical route-and-control comparison

Table 1. Operating comparison based on Article 6 and Article 7 categories; verify the exact route and conditions before registration or change. 23

Build the set-up sequence around people, data and evidence

A sound implementation sequence begins before the first billable event. Appoint one operational owner who can coordinate sales, finance, IT and any external accounting support; appoint a reviewer with authority to stop an invoice run when the data or supporting facts are incomplete. In smaller entities these may be the same person, but the responsibilities should still be explicit. The seller remains responsible for the accuracy of the invoice it prepares. 26

The registration step should be treated as a documented gate. Decree 254 sets the e-invoice principles and Circular 91 contains detailed implementation rules for registration and changes. Preserve the submission or approval evidence, the final configuration decisions and the person authorised to request changes. Where a company engages an accounting or technology provider, it should still know who can change seller details, invoice symbols, user access and interfaces. Outsourcing a task does not remove management’s need for a control owner. 245

Next, clean the source data. At a minimum, create a controlled seller profile, customer master-data process, product or service taxonomy, tax-field governance, currency policy where relevant, and a numbering or symbol-management procedure consistent with the selected route. The point is not to reproduce the whole legal field list in a spreadsheet. It is to ensure that the live configuration can produce the information Article 10 requires and that each value is traceable to a contract, order, delivery or service record. 26

A pre-production test is useful even where the selected application appears familiar. Test a representative invoice for each material revenue flow, for example domestic goods, a completed service, advance payment, credit note scenario or direct-to-consumer transaction if relevant. Review the output for data completeness, role permissions, duplicate prevention, delivery to the buyer, data transmission or storage behaviour and accounting-posting mapping. Record what was tested, who approved it and what remains outside scope. This produces evidence for a future review and makes a change in provider or staff less disruptive. 248

Use the legal timing rule as a system trigger

Invoice timing should be designed into the business process because timing follows the economic event, not the convenience of the month-end close. Under Article 9 of Decree 254, the general time for an invoice for goods is when ownership or use is transferred to the buyer, whether or not payment has been collected. For exported goods, the seller determines the timing of the electronic commercial invoice, electronic VAT invoice or electronic sales invoice, but no later than the next working day after customs clearance. 26

For services, the general time is when the service is completed, including services supplied to foreign organisations or individuals. Where the supplier collects money before or while providing the service, the invoice time is generally the time of collection. The official Article 9 explanation identifies a civil-law security deposit for performance of a service contract as an exception to that advance-payment wording. These distinctions matter in subscription, project, agency and retainer arrangements, where a payment event and a completed service may not coincide. 26

The prudent operating response is to map each revenue flow to a trigger. For goods, the trigger might be dispatch or signed handover where that reflects the transfer point in the company’s facts. For services, it might be completion, a defined billing milestone or advance payment, subject to the contractual and legal analysis. The map should show the system source, responsible team, cut-off rule, reviewer and the evidence retained. It should not rely on a salesperson remembering to notify finance after the event. 26

Figure 3. An e-invoice lifecycle is a chain of operational controls, not a single software action. Original visual created from cited data. 2 4 5

Validate invoice content through a controlled data model

An invoice can look complete to a customer and still fail the company’s control objective if its content cannot be linked to the transaction. Article 4 requires e-invoices to use the standard data format, include the required content under tax and accounting law and Article 10, and faithfully reflect the economic transaction. It also places responsibility for the accuracy of the issued invoice on the seller. This is why content governance belongs jointly to finance, operations and IT. 26

In practice, work backwards from the current Article 10 text and the company’s transaction types. Create a field-by-field implementation sheet that identifies the source system, data owner, validation rule, default value, change authority and exception path for each applicable field. For customer identifiers, decide how finance will validate onboarding data and what happens when a buyer asks for a change after issuance. For goods or services, define who can alter a description, unit, quantity, price or tax attribute and where that change is logged. 24

Do not create a fake invoice just to test the layout. Test using fictional but realistic data in a permitted test environment, then verify the resulting format, numbering logic and downstream ledger mapping. The production environment should prevent unauthorised edits and preserve a traceable record of who issued, reviewed or amended an invoice. A readable PDF copy may be useful commercially, but the company should not confuse it with the structured e-invoice data and applicable transmission or storage requirements. 248

Buyer signature is another area where outdated assumptions cause avoidable friction. The Decree’s Article 10 content rule does not make the buyer’s digital signature universally mandatory; it can be required where the parties agree. That does not lessen the seller’s responsibilities for accurate content, proper format, supporting evidence or the conditions of the selected route. Contract teams should therefore decide whether a buyer-signature requirement adds commercial value and make it explicit rather than treating it as a default legal necessity. 210

Figure 4. Invoice content should be controlled as transaction data rather than as a visual template. Original visual created from cited data. 2 4

Maintain the programme through reconciliation, error handling and records

The operating burden begins after the first invoice is issued. A mature programme reconciles e-invoice output to the sales sub-ledger, general ledger, tax reporting data and the supporting commercial record at a frequency proportionate to transaction volume and risk. The reconciliation should search for gaps, duplicates, unapproved changes, invoices generated outside the approved route, delayed source data and unresolved corrections. A discrepancy log with owner, date, root cause and closure evidence creates management visibility without turning every variance into a crisis. 128

Error handling needs a controlled playbook. Circular 91 addresses issued-invoice errors, registration changes, authorisation, higher-risk criteria and cessation or suspension-related issues. The correct procedure depends on the nature and timing of the error, whether it affects buyer or tax information, the transaction type and the applicable current instruction. For that reason, companies should classify an error first, retain the relevant evidence, identify the responsible approver and follow the current Circular 91 procedure. A generic instruction to delete, cancel or simply reissue every erroneous invoice is unsafe. 45

Create distinct error categories for data-entry errors, buyer-data changes, price or quantity corrections, tax-treatment questions, timing issues, duplicate output and system/transmission failures. The category should lead to a prescribed review, not necessarily an identical technical outcome. The playbook should also identify incidents that require tax, legal or external-accounting escalation before the buyer receives a revised document. This is particularly important where an invoice has already affected tax data or a financial close. 24

Records also matter after the correction has been completed. Vietnam’s Accounting Law is the baseline for accounting records, vouchers and retention categories, while the current e-invoice rules govern electronic invoice data. The enterprise accounting regime under Circular 99/2025/TT-BTC applies to financial years beginning on or after 1 January 2026 for enterprises in scope and should inform how invoice data fits into books and reporting. The practical control is to retain an accessible evidence chain and test retrieval, while checking any longer hold required by tax, audit, dispute or other law. 892

What this means for a foreign finance or operations lead

A foreign finance or operations lead should treat Vietnam e-invoicing as a local compliance control that needs a clear connection to group systems, not as a purely local back-office task. The first deliverable is a short country control memo: legal entity name and tax profile, selected route, revenue flows, source systems, local owner, group reviewer, provider responsibilities, current legal sources and escalation contacts. Keep it current when a legal entity, contract model or system changes. 124

For a newly formed entity, sequence matters. Company registration, tax registration, bank and commercial set-up, invoicing configuration, accounting policies and first-sale controls should be joined into a single launch plan. Avoid accepting a customer payment or promising an invoice date before the entity has checked its current registration status, selected route and ability to issue a compliant document. How to register a company in Vietnam as a foreign investor, Article 8. Vietnam company registration timeline, Article 15.

Common mistakes to avoid

Using a pre-July 2026 checklist without reconciling it to Decree 254 and Circular 91. Earlier rules can be historic context, but should not be the default operating instruction. 24

Classifying the route by a broad label such as “retailer”, “foreign-owned” or “B2B” rather than the Article 6 category, system conditions, risk position and real transaction facts. 3

Applying the VND 1 billion household/individual trigger to an incorporated company. The Article 6 rule is specific to the stated household and individual cases. 3

Treating an Article 7 exception as a broad exemption. The exceptions are enumerated and must be read against the transaction and supporting facts. 23

Issuing on the monthly close date even though the goods-transfer, service-completion or payment rule triggered earlier. Timing should be built into the sales and service workflow. 26

Assuming that a buyer signature is always required, or that its absence removes other seller obligations. Buyer signature depends on the rule and any agreement between the parties; invoice accuracy and content control remain essential. 210

Using a blanket “cancel and reissue” response to every error. Classify the issue and follow the current Circular 91 process with an audit trail. 45

Leaving e-invoice data solely with a provider, with no documented access, reconciliation, change log or retrieval test held by the company. 248

A calm next step for a business setting up or reviewing its process

If you need to align your invoicing process, accounting records and tax reporting to the current Vietnam rules, VietPard can help you map the operational questions for your entity and workflow. Discuss bookkeeping and tax support with VietPard.

Frequently asked questions about Vietnam e-invoices

Are e-invoices mandatory in Vietnam?

For sales of goods or provision of services, Article 4 of Decree 254 generally requires the seller to prepare an e-invoice for the buyer, including certain listed promotional and internal-use situations. The same provision is subject to the non-use cases in Article 7. The safe answer is therefore “generally, yes for covered sales”, followed by a review of whether the exact transaction is within a defined exception. 236

How does a business register for e-invoices in Vietnam?

The current framework requires the business to use the prescribed registration and implementation process before it relies on an e-invoice route. Decree 254 supplies the governing framework and Circular 91 contains detailed rules for registration and changes. Because the form, route and factual conditions must match the entity and its systems, a business should verify the current Circular 91 procedure and retain the registration/change evidence rather than rely on a provider’s generic onboarding checklist. 245

What information must be on a Vietnam e-invoice?

The controlling content requirements are in Article 10 of Decree 254, read with applicable tax and accounting law and implementing guidance. Rather than copy an incomplete generic checklist, a seller should test its live template and structured data against Article 10 for the relevant invoice and transaction type. Article 4 also requires the standard data format, complete required content and faithful reflection of the economic transaction. 246

When must a Vietnam e-invoice be issued?

For goods, the general Article 9 time is when ownership or use passes to the buyer, regardless of payment. For services, it is generally completion of the service, or receipt of money when money is collected in advance of or during performance; the official guidance notes a civil-law security deposit exception. Special rules apply to some activities and exports, so contract and operational facts should be reviewed before automating a trigger. 26

Does the buyer need to sign an e-invoice?

Not universally. The current content rule does not require a buyer’s digital signature unless the parties agree otherwise. That point should not be read as permission to omit any other data, format, seller-signature or evidence requirement that applies to the invoice. If a buyer signature is commercially important, document the agreement and test whether the workflow can preserve the signed data and reconciliation trail. 210

What should a business do if an e-invoice is wrong?

Start by identifying the nature of the error, the invoice’s status, the affected buyer and tax data, and the supporting transaction record. Circular 91 contains detailed provisions on issued-invoice errors and related administration. The appropriate response is fact-specific, so preserve the original record, follow the current procedure and escalate material tax, legal or accounting questions. Do not apply a blanket cancellation or replacement instruction to every mistake. 45

Conclusion: make e-invoicing a controlled business process

Vietnam e-invoicing works best when the company treats it as a transaction-control system. Under the current framework effective from 1 July 2026, the right sequence is to confirm the route and any exception, complete registration, configure valid data, build legal timing into operations, reconcile issued information to the books and use a current error process. Decree 254 and Circular 91 should anchor the operating file; old checklists should be retained only where the transition provisions make them relevant. 24

This guide is general information, not personalised tax, accounting, audit or legal advice. The applicable route, field requirements, timing and correction method can change with the entity, sector, contract, transaction and authority treatment. Before issuing or correcting invoices, validate the current primary legal text and your particular facts with an appropriately qualified Vietnam professional. Vietnam bookkeeping requirements, Article 37.

Sources and Further Reading

Primary Vietnamese legal sources form the core of this guide. The controlling texts are published in Vietnamese; decisive operational interpretations should be checked against the signed Vietnamese text and the facts of the transaction. All links were accessed 10 September 2026.

[1] National Assembly of Vietnam, Government Legal Document Database. Law No. 108/2025/QH15 on Tax Administration. 10 Dec 2025; effective 1 Jul 2026. Accessed 10 September 2026.

[2] Government of Vietnam, Government Legal Document Database. Decree No. 254/2026/NĐ-CP on electronic invoices and electronic documents. 30 Jun 2026; effective 1 Jul 2026. Accessed 10 September 2026.

[3] Government Electronic Newspaper (Chinhphu.vn). Regulations on entities using electronic invoices. 3 Jul 2026. Accessed 10 September 2026.

[4] Ministry of Finance, Government Legal Document Database. Circular No. 91/2026/TT-BTC detailing the Tax Administration Law and Decree 254. 30 Jun 2026; effective 1 Jul 2026. Accessed 10 September 2026.

[5] Tax Department, Ministry of Finance (via Thua Thien Hue Tax Department). Decree 254/2026/NĐ-CP and Circular 91/2026/TT-BTC on electronic invoices and electronic documents. 25 Aug 2026. Accessed 10 September 2026.

[6] Government Electronic Newspaper (Chinhphu.vn). How is tax calculated for an agency selling for a foreign enterprise?. 24 Jul 2026. Accessed 10 September 2026.

[7] Government of Vietnam, Government Legal Document Database. Decree No. 181/2025/NĐ-CP detailing implementation of certain provisions of the VAT Law. 1 Jul 2025; effective 1 Jul 2025. Accessed 10 September 2026.

[8] National Assembly of Vietnam, Government Legal Document Database. Law No. 88/2015/QH13 on Accounting. 20 Nov 2015; effective 1 Jan 2017. Accessed 10 September 2026.

[9] Ministry of Finance. New regulations on the enterprise accounting regime. 4 Nov 2025. Accessed 10 September 2026.

[10] LuatVietnam / Vietnam News Agency Official Gazette translation distributor. Decree No. 254/2026/NĐ-CP — English translation record. 30 Jun 2026. Accessed 10 September 2026.