- The Polish Ministry of Finance released the Certificates & Permissions Module (MCU) on 1 Nov 2025 for managing KSeF permissions and certificates.
- The MCU allows users to submit applications and download certificates for KSeF system use.
- On 15 October, the pre-production (Demo) environment of the KSeF 2.0 API was published.
- This demo environment enables testing of financial and accounting systems with real authentication methods.
- API testing is open ahead of the February 2026 KSeF mandate.
Source: vatcalc.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.
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