A-taxslips (connected with the samordnings-numbers for foreign workers) needs to be renewed every year in the beginning of the year. Why? Because it will affect the Annual Income Declaration calculation and tax rate if it is not renewed for the new income-year, also if the employee has changed place of residency and work.
The renewal is done via Skatteverket, as originally, the existing samordnings-number needs to be entered in the first page.
Please ask for an assistance if needed.