- The Ministry of Finance has launched a pre-production (Demo) environment for the KSeF 2.0 Taxpayer Application, allowing taxpayers to test issuing and receiving invoices as they will from February 1, 2026.
- Testing in the Demo environment is risk-free and has no legal or tax consequences; it operates independently from the production environment for certificates and permissions.
- The test environment (available since November 3, 2025) uses only fake data, while the Demo environment (available since November 15, 2025) uses real authentication data but fake invoice data.
- Feedback from users is encouraged to improve the final product before its official launch.
- Logging into the Demo environment requires real authentication data, such as a company’s NIP number.
Source: podatki.gazetaprawna.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.
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