Technical Note NT2023.001 v1.40 was released with updates to validation rules regarding single-phase taxation on fuels. Guidelines have been established for the control, calculation, transfer, and deduction of the single-phase tax under the ICMS regime. The updated validation rules include changes to Rule N12-70, allowing the issuance of fuel NF-e to non-taxpayers under CST 02, and the removal of exception conditions in Rules LA17-20, LA18-10, and LA18-20 that check dates in referenced keys. Implementation of the changes must be completed by October 16, 2023, for the authorization environment and by October 30, 2023, and April 1, 2024 (for RV N43a-10) for the production environment.
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