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Collaborating with the Tax Agency
Social cooperation in the filing of tax returns
List of organisations with whom agreements have been signed
Type 4: Local councils, public bodies, trade unions and social entities

List of organisations with whom agreements have been signed

Trade unions

Present throughout the Spanish State
Asturias
Cantabria
Castile-La Mancha
Castilla y León
Catalonia
Community of Valencia
Galicia
Madrid
Murcia

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Updated webpage: February 13, 2026