On 17 September 2026, the Polish Ministry of Finance announced an indefinite extension of token-based authentication for the National E-Invoicing System (KSeF). This decision removes the previous expiration date for token usage, providing long-term certainty for taxpayers, software providers, and ERP integrators. The extension is part of Poland’s broader strategy to ensure a smooth transition to mandatory e-invoicing, currently scheduled for full enforcement in 2027. By eliminating the token expiry deadline, the tax authority acknowledges the technical complexities faced by businesses in migrating to the KSeF platform and aims to prevent disruption to existing digital invoicing workflows. The move also aligns with the EU’s VAT in the Digital Age (ViDA) initiative, which encourages stable and interoperable digital reporting infrastructures across member states.
Key Takeaways
- Indefinite Token Validity: Token authentication, previously subject to periodic renewal or expiration, is now valid indefinitely. This eliminates the need for businesses to re-authenticate or update tokens on a fixed schedule, reducing administrative overhead and integration maintenance costs.
- Continuity for Software Providers: ERP and e-invoicing solution providers can maintain current API integrations without urgent redevelopment. This stability is crucial for the ecosystem of certified KSeF integrators who support thousands of Polish taxpayers.
- Supports 2027 Mandatory Rollout: The extension provides a stable authentication foundation for the upcoming mandatory KSeF adoption. Businesses should still prepare for full compliance with KSeF technical specifications, data formats, and reporting obligations, but can do so without authentication uncertainty.
Disclaimer: This article is compiled and summarized by the AI based on publicly available information and is for general information purposes only. It does not constitute any form of formal tax advice, legal opinion, or basis for performance. Please consult a qualified professional tax advisor or legal counsel for tax advice.
Source: Read Official Announcement