FIZ Invoicing is a free and unlimited online service with the AT certificate number 3041, designed for businesses, associations, freelancers (TI), and sole proprietors (ENI).
Before developing FIZ Invoicing, we analyzed the invoicing systems available in Portugal and found that many of them are impractical, difficult to understand, and often have functional limitations or require payment.
We know that, in Portugal, using certified software for invoicing is mandatory, and since this function is essential for businesses, we decided to make FIZ Invoicing as practical and simple as possible, with no limitations on the number of invoices, clients, or products. Most importantly, we made FIZ completely free.
We believe that, by doing so, we can support the development of entrepreneurship and businesses in Portugal.