Registration is an administrative act by which the Social Security Treasury General Office gives an identification and control number to the employer to be used for the employer's corresponding Scheme in the Social Security System. This number is considered the primary and main Contribution Account Code. The application must be made using form TA.6

All other numbers that can be assigned to an employer will be linked to the Main Contribution Account Code. It is important to point out that the employer must request a Contribution Account Code (form TA.7) in each province where their activities take place, as well as for specific cases in which it is necessary to identify worker groups with special contribution rules.

To finalise your request you may go to the Social Security Treasury General Officeclosest to the address where you work. If you have a digital certificate you may process the corresponding request via “Companies, depending on whether this involves an individual employer or a collective employer.