Do you know about the Electronic Invoice used in the state of São Paulo? Do you know its goals and advantages? No? Then you can't miss reading this post! Come learn with us about the most famous tax document in effect in our country! The Electronic Invoice is an integration and optimization system for all its users, both the supplier and the consumer! You won't want to miss out, will you?

The Electronic Invoice (NF-e) is a receipt that is registered digitally. It is issued to document transactions involving the circulation of goods or the provision of services between the parties involved.
All of this within the parameters required by the State Treasury Department and the Brazilian Federal Revenue Service.
Its legal validity and guarantee come from the sender's digital signature and the "authorization of use" provided by the tax authorities (before the taxable event occurs).

History
The São Paulo Electronic Invoice project was created through a partnership between the Brazilian Federal Revenue Service and ENCAT (National Meeting of State Tax Administrators and Coordinators).
The São Paulo Electronic Invoice plan began in 2005 and was supported by 6 state treasury departments and large corporations.
Main goals of the São Paulo Electronic Invoice

History
The Electronic Invoice follows the rules set out in the SEFAZ project, and its legal validity is guaranteed by the issuer's digital signature and receipt by tax authorities.
In the state of São Paulo, the Electronic Invoice's latest update followed Ajuste SINIEF 07/05, Protocolo ICMS 10/07, Protocolo ICMS 42/09, Ato COTEPE 03/09, and Portaria CAT 162/08.
CAT Ordinances
CAT Notices
Decrees

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