Here you must use the tax number of the company, society, association, institution, etc. for which you are registering. This means that you must enter the tax number under which, for example, the advance VAT return or the wage tax return is submitted to the tax office.

In the further course of registration, you will receive separately by e-mail the Activation ID and by mail the Activation Code. The letter with the activation Code will be sent to the address currently stored at the tax office responsible for the tax number. Any powers of attorney will not be taken into account here.