- The launch of the National e-Invoicing System (KSeF) for large taxpayers on February 1, 2026, caused significant operational disruptions despite government assurances of readiness.
- Users faced major technical issues, including authentication failures (notably with the Trusted Profile service), API errors between ERP systems and KSeF, and complicated access management.
- Free access methods to KSeF are limited and unreliable, causing concern among smaller taxpayers who face extra costs for alternatives.
- The abolition of corrective notes and the requirement for corrective invoices complicated purchasing processes, especially amid technical problems.
- Widespread errors in invoice recipient data and confusion over excluded documentation types led to increased manual work and fears of escalating chaos as the system expands.
Source: mddp.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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