FISCAL SOLUTIONS...

Key documents

General

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The General section provides a high-level overview of fiscalization and retail compliance requirements in each country. It may include country information, type of fiscalization model, main obligations and practical compliance context. This section helps users quickly understand how the country’s fiscal system works.

Legal

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The Legal section covers the rules and official information needed to understand fiscalization and related compliance obligations in each country. It includes official laws, draft regulations, tax authority guidance, public consultations, legal interpretations, and updates on upcoming regulatory changes. This section helps users identify the legal basis of each requirement and follow the regulatory context behind fiscal, e-invoicing, e-reporting and retail compliance obligations.

Technical

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The Technical section provides practical information on how fiscal, e-invoicing, e-reporting and other compliance requirements apply to POS, ERP, middleware and other business systems. This section may include details on technical integrations, data formats, communication with tax authorities, fiscal devices, electronic documents, archiving, offline mode, certification and mandatory system functionalities. Its purpose is to give users clear and implementation-oriented guidance for operation in a specific country.

Last news published on: 03.09.2026 | News: 224

Last document published on: 20.01.2026 | Documents: 40

Highlight

The Portuguese fiscalization system is the part of the systems which can be classified as software-based fiscalization with no specific hardware or fiscal device requirements. The country was one of the first countries to adopt the euro (€) on 1 January 1999.

Flag of Portugal

Portugal

Portugal has a software-based fiscalization system, which means that it is mainly focused on the characteristics of the POS application and demands regarding functions of the POS programme, such as security mechanisms, inalterability standards for the created fiscal data, and so on. Before its usage, the POS SW must pass through the compulsory certification procedure

Type of fiscalization: Software

Portugal applies an online software-based fiscalization system, where fiscalization is mandatory for the sale of goods and services and transaction data is transmitted electronically to the Tax Authority. There are no specific hardware or fiscal device requirements, but POS applications must be certified by the tax authority (AT/DGCI), a local partner is mandatory, and internet access is required. Transaction data can be sent via web services or manual uploads, and POS registration itself is not required, making the system flexible but strictly software-driven. 

Latest news for Portugal

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Retail standards are entering a new phase as cloud, mobile technologies and AI reshape how systems communicate. Fiscal Solutions’ webinar explored the evolution from UPOS and POSLog to digital receipt standards, retail ontology and AI-ready models designed to support the next generation of global retail.

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Retail technology doesn’t work without standards. Behind POS systems, eReceipts, and the technologies connecting the retail ecosystem are standards that have evolved for decades—from OPOS and ARTS to today’s landscape. What’s next? In this webinar, Roland Zališevskij, Co-Founder of Fiscal Solutions, explores the evolution of retail standards.

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The 3rd Annual Community Day on October 15, 2026, at Mona Plaza Belgrade focuses on fiscalization. No sales pitches or commercial agendas allowed.
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A fiscal transaction counter sounds simple—until it meets the reality of modern retail. POS systems often count much more than sales, creating gaps that can become a serious problem for tax authorities. Add cloud POS, e-commerce, offline operation, retries and multiple checkout channels, and a simple sequence of numbers quickly becomes a complex compliance architecture challenge.

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Portugal’s Tax and Customs Authority has issued Circular No. 25120, detailing invoice corrections and VAT regularization. Crucial clarifications include the correct use of credit notes for actual transactions only, requiring cancellation of invoices with minor formal errors instead. 
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Fiscalization has transformed from a compliance tool reliant on hardware to dynamic, software-driven platforms linking businesses and tax authorities. The webinar was presented by Dušan Bučevac, Sales Manager at Fiscal Solutions, who covered crucial fiscalization milestones and explained how real-time data has reshaped compliance, transparency, and business decision-making.
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Most important documents for Portugal

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The uploaded document titled "Portugal checklist" provides a detailed compliance checklist for SAF-T (Standard Audit File for Tax) regulations in Portugal.
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This Ordinance regulates the requirements for the creation of the QR code and the document unique code (ATCUD) which have been introduced before through Decree-Law No. 28/2019.
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This document represents a technical specification of the S4F Service architecture and interfaces for Portugal. It describes the constraints of S4F service architecture and interface, together with a brief overview of fiscal requirements in general from the technical point of view.
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This document addresses all the technical details regarding the fiscalizaton process in Portugal. In this presentation, we deal with the topics such as - Technical overview (technical requirements) - Fiscalization process (preparing transactions on POS, Request ATCUD code, Sign transaction, Create QR code, Issue fiscal receipts, Reporting to Tax Authority) - Examples of architecture on an existing fiscal solution, service functionality POS …
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This document describes the steps the client must take in Portugal to certify the POS software for invoicing. Our fiscal experts did research this specific field and they unveil to us information regarding fiscal law in Portugal as well as the procedure of starting the certification process in Portugal.

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We prepared you this valuable overview of the fiscalization requirements in Portugal with precise and concise information about topics of high interest for the retailers and POS business, such as general information, infrastructure, communication with the authorities, POS application requirements, and certification procedure.

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YouTube video - Portugal

How to record goods movement in Portugal

Jan 08, 2021

How to certificate POS SW solution in Portugal

Dec 30, 2020

Documents types on POS in Portugal

Dec 25, 2020

New Fiscal requirements that 2021 will bring in Portugal

Dec 18, 2020

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