United Left (IU) and Initiative for a Green Catalonia (ICV) proposed an amendment to the National Spanish Budget to deprive the Catholic Church of state funding, remove the tax deduction of volunteer contributions of citizens, and end the benefits on value-added-tax and property tax.
Sources:
http://www.publico.es/espana/266052/iu-icv-piden-suprimir-la-casilla-del-irpf-destinada-a-la-financiacion-de-la-iglesia
http://www.diariosigloxxi.com/texto-ep/mostrar/20091101122827
http://iurioja.blogspot.com/2009/11/iu-icv-piden-suprimir-la-casilla-del.html
http://noticias.terra.es/genteycultura/2009/1101/actualidad/iu-icv-piden-suprimir-la-casilla-del-irpf-destinada-a-la-financiacion-de-la-iglesia-catolica.aspx