On 1 October 2026, the Polish National Revenue Administration (KAS) announced scheduled maintenance works on the e-Deklaracje electronic filing platform, warning taxpayers and tax advisors of possible delays in submitting tax declarations and related documents. The maintenance window is part of routine system upgrades aimed at improving platform stability and security. The announcement, classified as a technical communication, does not indicate any changes to tax law or filing deadlines; however, taxpayers are advised to submit documents well in advance of statutory deadlines to avoid penalties for late filing caused by technical unavailability. The e-Deklaracje service is a critical channel for filing PIT, CIT, VAT, and other tax returns electronically.
Key Takeaways
- Service Interruption Risk: The e-Deklaracje platform may experience temporary unavailability or slower response times during the maintenance window, potentially delaying the submission of tax returns and supporting documentation.
- Deadline Compliance: Taxpayers remain legally responsible for meeting statutory filing deadlines; the administration recommends early submission to mitigate risk of late filing due to technical issues.
- No Legislative Change: This notice is purely technical and does not alter any tax obligations, rates, or procedural rules beyond the temporary service impact.
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