- New KSeF regulation effective February 2026 introduces changes in e-invoicing for companies
- Invoices with attachments up to 3MB allowed
- New authentication and KSeF certificates valid for two years
- QR codes for offline invoices with specific designations
- New system of permissions and ZAW-FA form
- Draft regulation published on May 21, 2025, by the Minister of Finance
- KSeF becomes mandatory from February and April 2026
- Significant change in invoicing, tax compliance, and data management
- Invoices with attachments require prior approval from the Head of the National Tax Administration
- Approval valid for two years, with possible extension
- Attachments must be in XML format and integral to the document
- Restrictions on attachments include no marketing content or prohibited materials
- New authentication system based on advanced digital security standards
- Four methods of electronic identification required for KSeF authentication
Source: crido.pl
Note that this post was (partially) written with the help of AI. It is always useful to review the original source material, and where needed to obtain (local) advice from a specialist.
