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Application to change contribution bases

Initially, you can go to a Social Security General Treasury Office in order to process your application. Subsequently, you will be able to process your application directly through the Application to change contribution basis (Self-employed workers) orApplication to change contribution basis (Special agreements) services, through the Social Security e-Office, if you have a digital certificate or username/password. 

 

 

En la siguiente tabla podrá descargarse los siguientes Documentos.
Documentos Download Fecha
TC4005 Application to change contribution base Descargar documento TC4005 Application to change contribution base. The document will open in a new window. Descargar documento TC4005 Application to change contribution base. The document will open in a new window. (PDF,254 KB) 10/10/2018
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