Although for the recipient of the invoice the tax reform may seem like a simple documentary update, for companies the transformation lies mainly in the underlying data of the document. The new model establishes the inclusion of new information regarding IBS and CBS in fiscal papers, demanding that this data be duly registered and processed.
In this context, the invoice transcends the function of a mere transaction receipt; it consolidates essential data used by various sectors and internal company systems. An error in any code or classification can result in the rejection of the document and lead to rework, in addition to the recorded data being subject to cross-referencing.
This analysis is part of the Olhar Digital series dedicated to guiding entrepreneurs on how to prepare for the tax reform, with plans to deepen other impacts in future publications.
Inclusion of IBS and CBS data and adaptation schedules
The tax reform legislation determines the insertion of information related to IBS and CBS in electronic fiscal documents. Implementation occurs following specific schedules, which involve modifications to layouts and validation standards.
The phase of adapting fiscal documents to the new guidelines began in 2026. Specifically for NF-e and NFC-e, the deadline established for mandatory issuance under the new rules is August 3, 2026. Other types of documents have their own deadlines, such as NFS-e, forcing companies to monitor technical updates and identify the rules relevant to their activities.
However, there was a significant change in August. The Federal Revenue and the IBS Management Committee postponed the start of certain validations that could cause the automatic rejection of documents due to the lack of specific IBS and CBS fields. It is important to note that the obligation to highlight and provide this information has not been suspended, and the general schedule remains valid. During this period of flexibility, documents can be approved even without all fields, in situations covered by the measure.
Experts' perspective on data increase
For Vinicius Panacho, a tax lawyer and partner at the firm Failla, Lima e Riva Advogados, a crucial aspect of the change lies in the hidden information behind the invoice. He explains that the electronic invoice has a structured version in XML, a digital file that organizes the document's data in a format suitable for processing by systems.
According to Panacho, the increase in the amount of data enhances opportunities for information cross-referencing. He emphasizes: 'There will be much more information because XML accepts a lot of information there for data cross-referencing. The data is very important precisely to be cross-referenced.' Thus, while the visual change for the end-user may be discreet, internally the document begins to carry more data that requires correct registration and processing.
The richness of information in the invoice also depends on the data used to fill it out. For this reason, the registration of products and services, as well as fiscal classification, become points of attention during the transition period.
Impact of incorrect codes and the operational chain
Roberta Marques, a tax specialist and lawyer at the firm Araúz Advogados, warns that the use of incorrect codes can lead to invoice rejection and generate additional work. She emphasizes that the review must include the specific code for each product and the applicable tax treatment.
When information used in the issuance is wrong, it can be transmitted improperly to the fiscal document, requiring subsequent corrections. Thus, the quality of the data directly influences the information recorded on the invoice. This care is even more relevant because the structured data of the documents is used in cross-referencing processes. The more data that needs to be registered, the greater the need to maintain consistent input data.
Additionally, the invoice acts as a link between different stages of the operation. The information contained in it can be accessed by the finance, purchasing, logistics departments, and in price definition. In the financial sector, a problem can compromise the company's receipt; in purchasing, it can affect the utilization of credits; in logistics, a failure can delay delivery to the customer; and in pricing, incorrect tax data can distort the charged value.
Therefore, an inconsistency in the invoice can extend beyond the fiscal sphere, impacting processes that entirely depend on documentary information. It is concluded that the invoice is more than just a record of sale or service; it represents a complex data structure that requires precise input and efficient processing by corporate systems to comply with new regulations.