Brazil's Federal Revenue Service (Receita Federal) and the IBS Management Committee (CGIBS) will suspend the mandatory completion of CBS and IBS fields in electronic fiscal documents, with revised validation rules ensuring documents are not rejected if those fields are left blank during the transition to the country's Consumption Tax Reform.
Brazil’s Federal Revenue Service (Receita Federal) and the IBS Management Committee (CGIBS) will suspend the mandatory requirement to complete fields relating to the Contribution on Goods and Services (CBS) and the Tax on Goods and Services (IBS) in a range of electronic fiscal documents, as part of adjustments linked to the country’s Consumption Tax Reform.
The measure will be introduced through a Joint Technical Act, which will amend the validation rules applied to electronic fiscal documents. The changes are intended to accommodate the ongoing implementation of the Consumption Tax Reform while formally ratifying technical documentation that had previously been published.
Validation rules amended
Under the revised rules, electronic fiscal documents will no longer be rejected if the CBS and IBS fields are left uncompleted. The amendment is designed to ease compliance during the transition to the new indirect tax framework.
The suspension of the mandatory fields will apply to several electronic fiscal document types, including NF-e, NFC-e, CT-e, CT-e OS, GTV-e, BP-e, NF3e and NFCom.
Transition under tax reform
The authorities said the changes are intended to support the implementation of Brazil’s Consumption Tax Reform by aligning document validation requirements with the evolving technical framework.
The Joint Technical Act will also formally approve the technical documentation that had already been released, providing a regulatory basis for the updated validation procedures.
This announcement was made on 1 August 2026.
