Conversor IAE CNAE

Provides a REST API and MCP server to look up and cross-walk Spanish IAE tax epigraphs and CNAE 2025/2009 activity codes along with related AEAT tax obligations, modules, and deadlines.

The Conversor IAE CNAE API uses API key authentication; has freemium pricing; offers a free tier (Free plan: 7.500 requests/month (250 req/day), no card required); rate limits: Free 250/day (7.500/mo); Profesional 2.000/day; Empresa 10.000/day; Compliance 30.000/day; burst limit 30 requests/minute; resets 00:00 Europe/Madrid. Verified 2026-07-26 with per-field source links.