01 · Candidates
How to read the results
The search compares your wording with the official ARCA and NAES descriptions in RG CA 19/2025. It returns up to six candidates ranked by exact code, phrase and relevant-term matches. It cannot produce a code that is absent from the official dataset.
Every result remains a candidate. Review the full label, equivalence and work you actually perform before choosing an activity in an official process.
Look up an ARCA ↔ NAES equivalence02 · Two classifications
ARCA and NAES are not interchangeable labels
ARCA uses its economic activity classification, while COMARB publishes NAES for the federal collection system. Annex II records the current correspondence. Many codes match, but some activities split or converge.
Each card therefore keeps both codes and descriptions visible. A six-digit number without its classification context can be entered in the wrong field.
03 · Source
A dated, reproducible index
The index is extracted from Annexes I and II of the official COMARB resolution and validated against the source file hash, page count and six-digit code structure. This version was checked on 8 September 2026.
If COMARB publishes a later resolution, it should generate a new dataset version. Confirm any final registration choice in the official service.