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Document Unique Code (ATCUD)

Nov 9, 20221 min read

After successive postponements, as of January 1, 2023, the insertion of the document unique code

(ATCUD) will be mandatory in all invoices and other fiscally relevant documents, even if there is a waiver of the use of certified software. Check this document:

Amendment to the Personal Income Tax Code

Changes to the Model 39 and respective instructions for completion

Payroll Tax changes for 2025

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Document Unique Code (ATCUD)

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