Cross-border converter
EMTAK 2025 42121 → CAE Rev 4 equivalent (Portugal)
Estonia's national activity classification (EMTAK 2025) shares its 4-digit backbone with the EU NACE Rev 2.1 standard. We use that backbone to surface the equivalent CAE Rev 4 subclass(es) used in Portugal.
Shared EU parent
42.12
Construction of railways and underground railways
42121
Raudteede ja metroo ehitus
42120
Construção de vias-férreas de superfície e subterrâneas
Compreende a construção de vias-férreas para comboios, elétricos e metropolitanos e construção de linhas aéreas de eletricidade e de carris condutores para vias-férreas.
About this conversion
EMTAK 2025 is the activity classification used in Estonia. CAE Rev 4 is the equivalent system in Portugal. Both are national implementations of EU NACE Rev 2.1, so any 5th-digit subclass in one system can be traced back to a shared 4-digit EU class — and from there, forward into the other country's subclasses.
This page is generated for the query "EMTAK 2025 42121 to CAE Rev 4" and stays in sync with our monthly Market Intelligence sync.