Getting invoicing software approved in Portugal is no small feat—it requires official government certification, a process that can take up to a year. After months of rigorous testing and approvals, we finally did it! 🎉

Unlike other countries where compliance is straightforward, Portugal demands an extra layer of approval. Now, with our certification in hand, we’re excited to offer a fully compliant invoicing solution—ready for use!

In this article, we are going to cover:

Space Invoices: Certified Portuguese Invoicing API Provider

Why Use Space Invoices’ API

Let’s Share The Certification Badge!

 

 

Space Invoices:

To use or provide invoicing solutions in Portugal, you must be certified. Unlike other countries where you can simply develop an API based on regulations and update it as needed, Portugal requires an additional approval process. Beyond compliance, you must schedule a call with the government, where they review and approve your software before it can be used.

Based on our own experience and feedback from others, this process takes an average of one year—but we finally did it! We are officially certified! 🎉

 

 

Why Use Space Invoices’ API

All businesses in Portugal generating more than €50,000 per year are required to use certified invoicing, whether by building their own solution or integrating an existing one. Many companies need a simple, localized API just for Portugal to ensure compliance—we can provide that, but there are likely better options for single-market solutions.

Our focus is on small and medium-sized enterprises (SMEs) that operate in multiple markets worldwide, such as e-commerce, SaaS, Neobanks, Fintech companies, and business formation services. That’s why, beyond standard invoicing features, we provide specialized API capabilities designed for global operations:

Global Invoicing Compliance – Our API supports invoicing in over 70 countries, now including Portugal. Each country has its own regulations, local language, currency, and cross-border invoicing requirements, all seamlessly integrated.

Multitenancy – If you offer invoicing as a service to your clients—whether through a platform or other business services—you need an API that supports multiple users. Multitenancy allows each client to brand and issue invoices independently, keeping their data private and secure.

White-Labelled Invoicing API – Your clients trust your platform, and seeing a third-party solution can undermine that trust. Our API can be fully white-labelled, ensuring the invoicing feature looks and feels like an in-house service.

Transparent & Predictable Pricing – If you're building a one-stop shop and looking to generate a new revenue stream, you need cost predictability. We offer fair, transparent pricing, ensuring scalability and profitability without hidden costs.

 

 

Let’s Share The Certification Badge!

We are a highly flexible company, always ready to assist you with any questions or needs. No matter the type of business you run, we’ll help you find the best way to integrate and use our invoicing solutions efficiently.

With us, you can:

Utilize Portuguese-certified invoicing features,

Have a single API for both current and future global tax and invoicing compliance,

Support and upsell your clients worldwide with ease,

Ensure secure archiving and successful reporting of all documents to the necessary institutions,

Position yourself as a one-stop shop for both current and future clients,

Automate processes and eliminate manual errors, saving time and money.

If you’re ready to start, sign up now or contact us—let’s solve your invoicing challenges once and for all!

 

Additional reading:

• 2030 Intra Community E-invoicing Mandatory EU ViDA
• 3 Best White-Label Invoicing APIs for B2B SaaS, Fintech, and Neobank Platforms
• Ask Your Developer: Key Insights for the Build vs Buy Debate in Invoicing API