- Polish authorities are progressing quickly with the National e-Invoicing System KSeF 2.0.
- Draft regulations were published in May and updated in June, now approved by the Polish Council of Ministers.
- The legislation is moving to Parliament for approval.
- Mandatory adoption starts 1 February 2026 for large taxpayers, 1 April 2026 for others, and 1 January 2027 for the smallest taxpayers.
- Key dates include publication of structure and API in June 2025, legislation completion in July 2025, API tests in September 2025, and provision of certificates in November 2025.
- Offline24 mode allows issuing invoices without real-time connection, with next-day upload.
- Multiple authentication methods will be supported during transition, with new methods required after 2026.
- E-invoices with attachments will be available, requiring prior registration.
- B2C e-invoicing will be optional, with strict data privacy measures.
- A collective identifier can be assigned to e-invoices for multiple recipients.
Source: sovos.com
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.
