®Portugal e-invoicing and tax software compliance
Portugal's rules are about the software as much as the invoice: invoices need an ATCUD code and QR code, must come from certified billing software, and are reported monthly via SAF-T, with structured e-invoicing mandatory for public-sector supply. We make your billing software meet all of it.
Prefer to write? Email sales@nowgray.com with the software you run today and your timeline.
Invoices must carry an ATCUD code and QR code, come from certified billing software, and be reported via SAF-T. Structured e-invoicing is mandatory for B2G. A qualified e-signature requirement for PDF invoices was reported to apply from 2027.
- ATCUD + QR on invoices
- Certified billing software
- Monthly SAF-T reporting
- B2G structured e-invoicing
What is ATCUD, SAF-T & B2G e-invoicing in Portugal?
Portugal controls tax through the billing software itself. Every invoice must include an ATCUD (a unique document code), show a QR code, and be produced by software certified by the tax authority (AT). Invoice data is reported to the AT through the monthly SAF-T (PT) file.
On top of that, structured e-invoicing is mandatory for suppliers to the public sector (B2G), with the deadline for smaller suppliers reported to have moved into 2026. Portugal has not imposed a general B2B clearance mandate, but a qualified electronic signature (QES) requirement for PDF invoices was reported to take effect from 2027, and SAF-T accounting obligations have their own timeline.
We make your billing software do all of this: ATCUD, QR, certification-grade output, SAF-T, and B2G e-invoicing.
A complete Portugal 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 ATCUD, SAF-T & B2G e-invoicing, end to end.
ATCUD & QR codes
We make your billing software produce the ATCUD code and QR code on every invoice.
Certified billing output
We align your invoicing with the AT's certified-software requirements.
SAF-T (PT) reporting
We generate the monthly SAF-T billing file for reporting to the AT.
B2G structured e-invoicing
We set up structured e-invoicing for your public-sector customers.
Qualified e-signature
We prepare your PDF invoices for the reported qualified e-signature requirement.
ERP / billing integration
All of this runs inside your existing billing or ERP software.
The Portugal compliance timeline.
Starting before enforcement means a calm cutover. Waiting means doing it under pressure.
ATCUD & QR codes
Invoices must carry an ATCUD code and a QR code from certified software.
B2G for smaller suppliers
Structured e-invoicing for smaller public-sector suppliers was reported to apply from 2026.
Qualified e-signature
A qualified e-signature requirement for PDF invoices was reported from 2027. Confirm with the AT.
Who the ATCUD, SAF-T & B2G e-invoicing rules affect.
Businesses using billing software
Any business issuing invoices in Portugal must use certified software that produces ATCUD and QR codes and SAF-T files.
Public-sector suppliers (B2G)
Businesses invoicing the public sector must send structured e-invoices.
Businesses issuing PDF invoices
Those relying on PDF invoices, given the reported qualified e-signature requirement from 2027.
Dates and thresholds change, and scope depends on your exact situation. Treat this page as a starting point, confirm the detail with the Autoridade Tributaria e Aduaneira (AT), 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 make your existing billing or ERP software Portugal-compliant: ATCUD, QR codes, certified-grade output, SAF-T reporting, and B2G structured e-invoicing. If your system cannot be adapted, we build one that can.
Because the rules target the software, getting the system right once keeps every invoice compliant automatically.
Portugal e-invoicing questions.
What does a compliant Portuguese invoice need?
An ATCUD unique document code, a QR code, output from certified billing software, and reporting via the monthly SAF-T file. We make your software produce all of it. Confirm specifics with the AT.
Is B2B e-invoicing mandatory in Portugal?
Portugal has not imposed a general B2B clearance mandate. Structured e-invoicing is mandatory for public-sector supply (B2G), and a qualified e-signature requirement for PDF invoices was reported from 2027.
What is SAF-T (PT)?
A standard audit file that reports invoice and accounting data to the AT, submitted monthly for billing. We generate it from your invoicing data.
Can you make my billing software compliant?
Yes. We make your existing billing or ERP software produce ATCUD, QR codes, SAF-T, and B2G e-invoices, and we also build compliant systems.
How do I get started?
Email sales@nowgray.com with your billing software and whether you supply the public sector. We will scope the compliance work.
Start your Portugal e-invoicing integration.
Tell us what software you run and your timeline. We will scope the integration and get you compliant with ATCUD, SAF-T & B2G e-invoicing well before enforcement reaches you.
Enquiries: sales@nowgray.com · Source of truth: Autoridade Tributaria e Aduaneira (AT)