- From December 22, 2025, the Ministry of Finance will freeze the production contract for the KSeF 2.0 API.
- No further changes are expected in the KSeF interface, which is good news for integrators implementing the National e-Invoice System in companies.
- Any future updates to the API will be communicated in advance and published in the official changelog.
- Key elements such as endpoint lists, request and response formats, field meanings, response codes, and validation rules will remain unchanged.
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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