Who it is for

 People who have signed a special agreement with the Social Security system governed by the Order of the Ministry of Labour and Social Security of 18 July 1991 (BOE of 30 July) or by Order TAS/2865/2003 of 13 October (BOE of 18 October).

What you can do

• Make changes to the contribution base.
• Request or forego an increase in the contribution base, as per the provisions of governing regulations.
• Get a receipt for the submitted request.

Please note

• Those who have signed special agreements governed by the Order of the Ministry of Labour and Social Security of 18 July 1991 may request either a change to the contribution base of the special agreement for the calendar year in which the change request is made or an increase in the contribution base of the special agreement. No subsequent changes are permitted for that financial year.
• Those who have signed special agreements governed by Order TAS/2865/2003 of 13 October, may request a change to the contribution base and/or request/forego the automatic increase in question. The chosen contribution base will take effect from 1 January of the year following the date on which the request is submitted. If, within the request period, you submit more than one request for a change to the contribution base and/or request/forego the increase for the same year, only the data from the last request will be considered.