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Portuguese E-Invoices - My Vat Calculator

Portuguese E-Invoices

The advent of electronic invoicing has significantly revolutionized the business environment, and Portugal has been no exception to this digital shift.

In 2019, the Portuguese government introduced mandatory e-invoicing, particularly for Business-to-Government (B2G) transactions, a move that necessitates a comprehensive understanding of the new requirements.

The implications of this mandate are far-reaching, touching on advanced submission of invoice series numbers to tax authorities, invoice retention periods, and the use of approved software for certain suppliers.

Hence, the need to dissect these requirements and their impact on businesses operating within Portugal’s jurisdiction cannot be overemphasized.

Buckle up as we navigate this complex terrain to make sense of the Portuguese E-invoicing landscape.

Key Takeaways

  • Mandatory electronic invoices for B2G transactions by resident companies were implemented in Portugal in 2019.
  • Invoice series numbers must be submitted for prior clearance and identification by tax authorities, which is a unique requirement in Europe.
  • Portuguese B2B e-invoices from 2021 require taxpayers to apply for a unique series of invoice numbers in advance.
  • Invoices must be kept for 10 years by both the issuer and recipient, and certain details such as date, supplier and VAT identification, government contractor details, and payment instructions must be included in the e-invoices.


The introduction of mandatory Portuguese e-invoices in 2019 marked a significant shift in the business-to-government (B2G) transactions landscape. This move, which uniquely requires the submission of invoice series numbers for clearance by tax authorities, was particularly impactful for businesses with annual sales above €75,000, mandated to use government-approved invoicing software.

Understanding the key details of this implementation and the essential advice surrounding it is crucial for businesses operating within this framework.

Key E-Invoice Implementation Details

Understanding the intricate details of Portuguese e-invoice implementation is integral for businesses operating in the country. This is especially important considering the unique aspects of the system, such as the mandatory use of a tax office number and the requirement for pre-clearance of invoice series numbers by tax authorities.

  • Public companies in Portugal have been required to send electronic invoices (B2G) since 2019. This means that businesses need to be prepared to comply with this regulation if they want to work with public sector organizations.
  • All invoices issued in Portugal must bear a tax office number. This number is used to identify the tax office responsible for the taxpayer and is an essential component of the e-invoice.
  • Another important requirement of the Portuguese e-invoice system is the pre-clearance of invoice series numbers by tax authorities. This means that businesses need to obtain approval from the tax authorities before using a particular series of invoice numbers.
  • As of 2021, businesses in Portugal are no longer allowed to use PDF invoices. Instead, they must use Portuguese approved software for generating and sending e-invoices. This requirement ensures that invoices are generated and transmitted in the correct format and comply with all the necessary legal and technical standards.

Essential E-Invoice Implementation Advice

Navigating the landscape of e-invoice implementation in Portugal VAT requires a thorough understanding of several crucial aspects.

One aspect is the mandatory use of government-approved invoicing software for suppliers with sales exceeding €75,000 per annum. This requirement ensures that businesses are using a standardized system that complies with the regulations set by the Portuguese Tax Authority.

Another aspect to consider is the requirement for taxpayers to apply for a unique series of invoice numbers in advance. This step helps maintain the integrity of the invoicing process and ensures that each invoice is properly recorded and accounted for.

In addition to these requirements, there are also specific guidelines for different types of invoices. Detailed invoices for goods or services, electronic invoices for B2G transactions, and SAF-T accounting files are all overseen by the Portuguese Tax Authority. These guidelines help streamline the invoicing process and ensure consistency and accuracy in reporting.

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Frequently Asked Questions

Is E-Invoicing Mandatory in Portugal?

Yes, e-invoicing is mandatory in Portugal. This applies to both Business-to-Government (B2G) transactions and, as of 2021, Business-to-Business (B2B) transactions. Companies are required to use government-approved invoicing software for sales above €75,000 annually.

How Do I Make an Invoice in Portugal?

In Portugal, an invoice is created by including mandatory details such as the issuance date, supplier information, and net VAT amount. It’s submitted through the eSPap portal and requires a qualified electronic signature for validation.

Is E-Invoicing Mandatory in Brazil?

E-invoicing is mandatory in Brazil for business transactions. The Brazilian government requires these digital tax receipts to improve taxation transparency and reduce tax evasion, enhancing the overall efficiency of the country’s economic system.

Can Invoices Be Sent Electronically?

Yes, invoices can be sent electronically. This method is increasingly common and often preferred due to its efficiency and environmental benefits. However, regulations for e-invoicing can vary widely by country and industry.


In conclusion, the article has offered an insightful understanding of the complex landscape of electronic invoicing in Portugal, with a particular focus on requirements for B2G transactions.

It has further emphasized the importance of compliance with Portuguese VAT legislation, the use of government-approved software, and the benefits of utilizing the eSPap portal.

The information provided herein sheds light on the intricacies of e-invoicing in Portugal, thereby serving as a valuable resource for businesses operating within the region.

Barry Caldwell

Barry Caldwell

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