conversoriaecnae/iae-cnae-2025

IAE & CNAE 2025 Open Dataset (Spain)

Three machine-readable Spanish tax-classification catalogs. Maintained by conversoriaecnae.es. License: CC-BY-4.0 — please attribute conversoriaecnae.es when reusing.

Files

File	Rows	Source
data/v1/iae.{csv,jsonl}	1,189	AEAT — Tarifas IAE
data/v1/cnae_2025.{csv,jsonl}	1,060	INE / Real Decreto 10/2025 Art. 6
data/v1/correspondencia_cnae2009_cnae2025.{csv,jsonl}	1,010	INE / RD 10/2025 Art. 7(c)

Schema

Catalog	Columns
iae	cod_iae (string), cod_integro_iae (string), titulo_iae (string)
cnae_2025	cod_cnae (string), cod_integro_cnae (string), titulo_cnae (string)
correspondencia_cnae2009_cnae2025	cod_cnae_2009 (string), cod_cnae_2025_correspondientes (string)

Editorial fields (slugs, sector groupings, keyword tags, derived metadata) are reserved to conversoriaecnae.es and available via the public API: https://www.conversoriaecnae.es/api.

Load with Python

from datasets import load_dataset
iae = load_dataset("conversoriaecnae/iae-cnae-2025", "iae")
print(len(iae["train"]))  # 1189

Citation

@dataset{conversoriaecnae_2026_iae_cnae,
  author       = {Mena Gómez, Brian},
  title        = {IAE \& CNAE 2025 Open Dataset},
  year         = 2026,
  publisher    = {conversoriaecnae.es},
  url          = {https://github.com/conversoriaecnae/iae-cnae-open-data},
  license      = {CC-BY-4.0}
}

What is not in this dataset

The IAE↔CNAE-2025 conversion mapping is a derived work maintained privately by conversoriaecnae.es. To convert between IAE and CNAE 2025, use the public API: https://www.conversoriaecnae.es/api.

AI-generated enrichment (semantic summaries, fiscal signals, embeddings) and analytics (popularity, search counts) are also private.

Legal basis

Source catalogs are open public-sector information under Spain's Ley 37/2007. This dataset republishes the official identifier (cod, cod_integro) and title (titulo) columns only.

Updates

Refreshed when AEAT or INE publish updates. See CHANGELOG.md.