To use KSeF, every person performing any action in the system must have the appropriate authorization. Before the system allows issuing or receiving an invoice, it must verify the user's identity – that is, ensure that the person actually has the right to act on behalf of the taxpayer. In other words: before you issue or receive an invoice in KSeF, you must authenticate yourself in the system.
Four authentication methods are possible:
1. Electronic identification means (e.g., ePUAP, trusted profile, bank login). 2. Qualified electronic signature. 3. Qualified electronic seal. 4. KSeF certificate, generated after prior authentication of the taxpayer or authorized entity.
Until December 31, 2026, it will still be possible to log in using a token operating on the existing rules. After this date, the token will be replaced by the KSeF certificate. Users who use the token will not be able to generate a KSeF certificate until they change their authentication method.
How to Grant Initial Authorizations? Sole Proprietorship
For entrepreneurs running a sole proprietorship, the process is very simple:
Companies and Other Entities (Not Natural Persons)
For companies and other legal entities, the procedure looks slightly different:
Alternatively, companies can also grant authorizations using a qualified electronic seal.
In summary - the basis for starting work with KSeF is proper authentication and granting appropriate authorizations. Depending on the form of business – sole proprietorship, company, or other entity – this process looks slightly different, but in each case, it is crucial that the appropriate people are verified and assigned to the system.
You don't have to deal with KSeF alone! The Fengo Accounting Office team is happy to help and support you at every stage of implementation.
biuro@fengo.pl www.fengo.pl/biuro accounting
