Is e-Invoicing mandatory in Portugal?

Portugal is currently implementing e-Invoicing in a phased rollout. B2B is not currently required and B2G is in a phased rollout.

What is the B2B e-Invoicing status in Portugal?

B2B e-Invoicing in Portugal is not currently required. No mandatory requirements. Buyer's consent required for receiving e-invoices.

What is the B2G e-Invoicing status in Portugal?

B2G e-Invoicing in Portugal is in a phased rollout since 2021-01-01. Large companies mandatory from 2021; SMEs/Micro mandatory from Jan 1, 2026 (postponed from 2025 per [OE2026](https://www.oe.gov.pt/)). FE-AP optional. All contracting authorities must accept e-invoices via [e-Fatura Portal](https://faturas.portaldasfinancas.gov.pt/) registered on [Portal BASE](http://www.base.gov.pt/).

What e-Invoice formats does Portugal support?

Portugal supports the following e-Invoice formats: CIUS-PT (UBL 2.1 / CEFACT).

What e-Invoicing standards does Portugal use?

Portugal uses the following e-Invoicing standards: EN 16931.

Is SAF-T required in Portugal?

SAF-T reporting in Portugal is mandatory. Monthly SAF-T invoicing submissions via [Portal das Finanças](https://info.portaldasfinancas.gov.pt/pt/home/Paginas/homepage.aspx); accounting SAF-T submission for 2027 periods due in 2028 (per [OE2026](https://www.oe.gov.pt/)).

Is Portugal affected by EU ViDA regulations?

Yes, Portugal is subject to the EU's ViDA (VAT in the Digital Age) regulations. ViDA introduces mandatory e-Invoicing for cross-border B2B transactions and real-time digital reporting requirements across EU member states.

What ERP systems support Portugal e-Invoicing?

Major ERP systems including SAP, Oracle, Microsoft Dynamics, Sage, and QuickBooks support Portugal e-Invoicing through CIUS-PT (UBL 2.1 / CEFACT). Integration typically requires Peppol network connectivity or direct API integration.

How do I integrate my accounting software with Portugal e-Invoice requirements?

To integrate with Portugal e-Invoicing: 1) Ensure your software supports CIUS-PT (UBL 2.1 / CEFACT), 2) Connect via a Peppol Access Point provider, 3) Comply with EN 16931.

What technical standards must my software support for Portugal e-Invoicing?

Portugal requires compliance with EN 16931 standards. Supported formats include CIUS-PT (UBL 2.1 / CEFACT). Archiving requirement: 10 years retention per Article 19 of [Decree-Law No. 28/2019](https://info.portaldasfinancas.gov.pt/pt/informacao_fiscal/legislacao/diplomas_702702702702705702702702702702702702704/Pages/decreto-lei-28-2019.aspx); digital archives must ensure accessibility, legibility, and integrity controls; offshore storage permitted if accessible to Autoridade Tributária.

When is the next e-Invoicing deadline in Portugal?

The next e-Invoicing deadline in Portugal is 31 December 2026: PDF acceptance ends. PDFs accepted as e-invoice equivalents through December 31, 2026 (per [OE2026](https://www.oe.gov.pt/) State Budget Law).

How do I get started with e-Invoicing in Portugal?

To get started with e-Invoicing in Portugal: 1) Choose a Peppol-certified Access Point provider, 2) Register for a Peppol ID, 3) Configure your accounting software to send/receive CIUS-PT (UBL 2.1 / CEFACT) formats, 4) Test with trading partners.

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Portugal e-Invoicing

Fatura eletrónica em Portugal

Updated 30 November 2025

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In-depth mandate analysis, timeline, exemptions, and vendor selection

B2B

none

No mandatory requirements. Buyer's consent required for receiving e-invoices.

B2C

none

B2G

phased

since 1 January 2021

Large companies mandatory from 2021; SMEs/Micro mandatory from Jan 1, 2026 (postponed from 2025 per OE2026 ). FE-AP optional. All contracting authorities must accept e-invoices via e-Fatura Portal registered on Portal BASE .

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Standards:

EN 16931

Supported Formats:

CIUS-PT (UBL 2.1 / CEFACT)

Archiving Requirements:

10 years retention per Article 19 of Decree-Law No. 28/2019 ; digital archives must ensure accessibility, legibility, and integrity controls; offshore storage permitted if accessible to Autoridade Tributária.

Mandatory

Monthly SAF-T invoicing submissions via Portal das Finanças ; accounting SAF-T submission for 2027 periods due in 2028 (per OE2026 ).

B2G mandate extends to SMEs/micro

1 January 2026

B2G

Full B2G coverage via FE-AP (postponed from Jan 2025 per OE2026 ).

QES mandatory

1 January 2027

Domestic

Qualified Electronic Signature (QES) required for non-EDI invoices (e.g., PDFs) from January 1, 2027 (per OE2026 State Budget Law).

Accounting SAF-T deadline

1 January 2028

Domestic

Accounting SAF-T submission for 2027 periods due in 2028 (per OE2026 State Budget Law).

ViDA: Cross-border B2B DRR

1 July 2030

Intra-EU

Digital Reporting Requirements affect cross-border B2B transactions.

ViDA: Domestic Alignment

1 January 2035

Domestic

Member States must align domestic digital real-time transaction reporting with EU standards.

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Frequently asked questions about e-Invoicing in Portugal

Primary sources for Portugal

ec.europa.eu, oe.gov.pt.

Related Countries

Bosnia and Herzegovina

none

Bulgaria

none

Portugal e-Invoicing

Fatura eletrónica em Portugal

eInvoicing Mandates

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Technical Specifications

Standards:

Supported Formats:

Archiving Requirements:

SAF-T (Standard Audit File for Tax)

Featured Solution for Portugal

Featured e-Invoicing Solutions

Frequently asked questions about e-Invoicing in Portugal

Primary sources for Portugal

Related Countries

Portugal e-Invoicing

Fatura eletrónica em Portugal

eInvoicing Mandates

eInvoicing Mandates

Exclusive Sponsor

Technical Specifications

Technical Specifications

Standards:

Supported Formats:

Archiving Requirements:

SAF-T (Standard Audit File for Tax)

SAF-T (Standard Audit File for Tax)

Implementation Timeline(11 events)

Featured Solution for Portugal

Featured e-Invoicing Solutions

Frequently asked questions about e-Invoicing in Portugal

Is e-Invoicing mandatory in Portugal?

What is the B2B e-Invoicing status in Portugal?

What is the B2G e-Invoicing status in Portugal?

What e-Invoice formats does Portugal support?

What e-Invoicing standards does Portugal use?

Is SAF-T required in Portugal?

Is Portugal affected by EU ViDA regulations?

What ERP systems support Portugal e-Invoicing?

How do I integrate my accounting software with Portugal e-Invoice requirements?

What technical standards must my software support for Portugal e-Invoicing?

When is the next e-Invoicing deadline in Portugal?

How do I get started with e-Invoicing in Portugal?

Primary sources for Portugal

Related Countries