The invoicing software ecosystem in Portugal has evolved rapidly with the transition to 100% cloud solutions. Today, freelancers and small businesses have access to several options certified by AT, with different levels of complexity and price.
Among the most talked about names are solutions such as Moloni, InvoiceXpress, Vendus or Jasmin. They all share a common objective: to allow issuing fiscally valid documents, maintaining sequential numbering and ensuring integration with the Tax Authority.
However, many of these systems have grown so much in functionality that they have become cumbersome for those who just need to issue invoices in a simple, fast and secure way. This is precisely where SimpleSum comes in.
Why is SimpleSum different?
SimpleSum was designed from the ground up for freelancers and small businesses in Portugal They value clarity and user experience. Instead of trying to be a complete ERP, it focuses on doing very well what is really important on a daily basis:
Clean and intuitive interface, without confusing menus;
Optimized invoicing flows to create documents in just a few minutes clicks;
Native support for ATCUD, QR Code and SAF‑T, always aligned with AT rules;
Series management and sequential numbering designed to avoid errors and rejections;
Essential functionalities such as invoices, receipts, credit notes and quotes.
SaaS model: always up to date, no installations complex.
Simplicity without losing compliance
Despite the simple experience, SimpleSum was built on a modern architecture that respects all AT technical requirements. This means that the user does not have to worry about technical details such as signature keys, SAF‑T files or QR codes: the system takes care of everything in the background.
The result is a tool that combines the best of both worlds: simplicity of use for those issuing documents and robustness technique to ensure tax compliance.
When does it make sense to choose SimpleSum?
If you are starting out, are a freelancer or run a small business that needs to invoice in Portugal with clear AT rules, SimpleSum is an excellent choice. It allows you to start quickly, grow safely and keep your house organized without the need for complex training.
Basically, less time wasted in the back office and more time dedicated to your business.