The Community regulations are applied for the coordination of Spain's social security systems with the Member States of the European Union and with the States Parties to the European Economic Area.
- Countries belonging to the European Union: Alemania, Austria, Bélgica, Bulgaria, Chipre, Croacia, Dinamarca, Eslovaquia, Eslovenia, España, Estonia, Finlandia, Francia, Grecia, Hungría, Irlanda, Italia, Letonia, Lituania, Luxemburgo, Malta, Países Bajos, Polonia, Portugal, República Checa, Rumanía, Suecia.
- Countries belonging to the European Economic Area: Iceland, Liechtenstein and Norway.
- Swiss Confederation, under the Agreement concluded with the European Union on the free movement of persons
- United Kingdom of Great Britain and Northern Ireland, through the Trade and Cooperation Agreement provisionally applied from 1 January 2021 and definitively entered into force on 1 May 2021.