Zone Soft | Ponto de Venda, Mobilidade, Gestão Comercial e Muito Mais

New Tax Legislation

As you may be aware, on January 1, 2023, Decree Law No. 28/2019 will be in full force. This means that as of this date, in addition to the QR Code, all fiscally relevant documents must also contain the Single Document Code (Código Único do Documento) - ATCUD. To ensure your business won't stop invoicing on the first day of the year you will need reliable and up-to-date solutions.

Zone Soft has the most complete and up-to-date solutions for catering, retail, mobility and commercial management. Now is the perfect timing to change your software and be fully compliant with the new legislation that will come into force.


To continue billing in compliance with the new legislation that will come into force on January 1, you must update your software. See what changes and switch to Zone Soft solutions as soon as possible:  


ATCUD is composed by the series code automatically obtained via webservice on Zone Soft solutions, plus the number of the document that will be processed/issued. The ATCUD must have at least 8 characters - the series validation code + the sequential number within the series. It can be printed above the QR Code or next to the company data. If the document has more than one page, ATCUD must appear on all pages.


The file must be sent by the 5th of each month and the file becomes multi-document. 


As of January 2023 all invoices and tax documents sent electronically must be digitally signed, with a qualified digital certificate. The digital signature is an exclusive, non-transferable recognition that identifies the company responsible for issuing the digital document, ensuring the integrity of the data contained therein, and can only be issued by an accredited entity. 

Last days before the tax change

Don't start the new year without being able to invoice. If your company's software hasn't been updated yet, you have a few days to update or change it. Take advantage and change for a Zone Soft solution to start 2023 without worrying about all the tax changes. 

Exclusively for Portugal