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  7. Documents missing CBS and IBS fields will not be rejected from 3 August

Documents missing CBS and IBS fields will not be rejected from 3 August

Regulatory·13 August 2026·2 replies·7 likes·Last post 14 August 2026·Reply

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Carlos R.13 August 2026
Worth flagging for anyone building against the new layouts. From 3 August the documents came under the IBS and CBS rules, but a missing CBS or IBS field will not reject the document. The duty to fill them is still there, it just is not enforced at validation yet. So you get a window where those documents pass validation and your data can still be wrong.
Alex C.13 August 2026
Separate question on the NFS-e side. I had 1 September in the calendar for Simples Nacional companies having to use the national emitter. Has that moved?
Ana G.14 August 2026
Moved to 1 November, the Simples Nacional committee pushed it back at the start of the month. Micro-enterprises and small businesses issue the national-standard NFS-e through the Emissor Nacional, web portal or API. MEI service providers have been on the national standard since September 2023, so this is the rest of that population catching up.

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Brazil at a glance

B2B:
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B2G:
Mandatory
B2C:
Mandatory

Next: Nov 2026, National-standard NFS-e mandatory for Simples Nacional ME and EPP

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