®Vietnam e-invoicing integration
Vietnam requires electronic invoices registered with the tax authority, and now e-invoices generated from cash registers connected to the tax database for many retail and household businesses. We connect your POS, ERP, or billing software to the GDT so invoices carry a valid tax authority code.
Prefer to write? Email sales@nowgray.com with the software you run today and your timeline.
E-invoices are mandatory, and cash-register e-invoices connected to the tax authority apply to many retail and household businesses (reported from 1 June 2025 for business households with revenue of VND 1 billion or more). Rules were updated again in 2026.
- Tax authority code (coded e-invoices)
- Cash-register e-invoices
- GDT connection
- QR code on receipts
What is E-invoices with tax authority code in Vietnam?
Vietnam has required electronic invoices for several years. For coded e-invoices, a unique tax authority code must be issued by the General Department of Taxation (GDT) before the invoice reaches the buyer. The GDT returns a code and a QR code for display on the receipt.
The system has expanded to cover e-invoices generated from cash registers connected to the tax authority's database. Reporting points to business households and individual traders with annual revenue of VND 1 billion or more being brought into cash-register e-invoices from 1 June 2025, with further decrees updating the framework and thresholds through 2026.
Because the rules have changed repeatedly, we connect your software to the GDT and keep it aligned with the current decrees so your invoices carry a valid code.
A complete Vietnam integration.
Whether you run an off-the-shelf ERP, a cloud accounting app, or a POS you built in-house, we make it comply with E-invoices with tax authority code, end to end.
GDT integration
We connect your software to the tax authority so invoices receive a valid code before issue.
Cash-register e-invoices
We set up cash-register e-invoices connected to the tax database for retail and household businesses.
QR code on receipts
The tax authority QR code is produced on receipts for verification.
Format mapping
We map your invoice data to the required format so submissions are accepted.
POS / ERP integration
We wire the e-invoice flow into your existing POS, ERP, or billing software.
Decree alignment
We keep the integration aligned with the current decrees as the rules change.
The Vietnam compliance timeline.
Starting before enforcement means a calm cutover. Waiting means doing it under pressure.
Coded e-invoices
Electronic invoices with a tax authority code have been required for several years.
Cash-register e-invoices
Business households with revenue of VND 1 billion or more were reported brought into cash-register e-invoices.
Framework updates
Further decrees updated the framework and thresholds through 2026. Confirm with the GDT.
Who the E-invoices with tax authority code rules affect.
Enterprises and organisations
Businesses required to issue coded or uncoded e-invoices registered with the GDT.
Retail and cash businesses
Retail and service businesses brought into cash-register e-invoices connected to the tax authority.
Business households (VND 1bn+)
Household businesses and individual traders above the revenue threshold required to use coded or cash-register e-invoices.
Dates and thresholds change, and scope depends on your exact situation. Treat this page as a starting point, confirm the detail with the General Department of Taxation (GDT), and tell us what you run today, we will tell you plainly what an integration would involve.
Built into the software you already run.
We integrate Vietnam e-invoicing into your existing POS, ERP, or billing software: the GDT connection, coded or cash-register e-invoices, and QR codes. If your system cannot connect, we build or adapt one that can.
Because the decrees keep changing, we keep your integration current rather than leaving you on a setup that was right last year.
Vietnam e-invoicing questions.
Is e-invoicing mandatory in Vietnam?
Yes. Electronic invoices are mandatory, and cash-register e-invoices connected to the tax authority apply to many retail and household businesses (reported from 1 June 2025 for business households with revenue of VND 1 billion or more). Confirm current rules with the GDT.
What is the tax authority code?
For coded e-invoices, the General Department of Taxation issues a unique code, with a QR code, before the invoice reaches the buyer. We connect your software so this happens automatically.
What are cash-register e-invoices?
E-invoices generated from cash registers connected to the tax authority's database, required for many retail and household businesses. We set this up in your POS.
Can you integrate this with my POS or ERP?
Yes. We connect your existing POS, ERP, or billing software to the GDT, and we keep it aligned with the current decrees. We also build compliant systems.
How do I get started?
Email sales@nowgray.com with your software and business type. We will scope the Vietnam e-invoicing integration.
Start your Vietnam e-invoicing integration.
Tell us what software you run and your timeline. We will scope the integration and get you compliant with E-invoices with tax authority code well before enforcement reaches you.
Enquiries: sales@nowgray.com · Source of truth: General Department of Taxation (GDT)