On 3 September 2026, the Central IT Center (Centrum Ośrodka Informatyki – COI) of the Polish National Revenue Administration announced a scheduled maintenance window for its core information systems. The maintenance is set to occur on 3 September 2026, during which various tax and customs IT systems managed by COI may be temporarily unavailable or experience reduced functionality. The notice advises taxpayers, tax advisors, and customs agents to plan their electronic submissions, including JPK_VAT files, tax returns, and customs declarations, outside the maintenance window to avoid transmission failures. The COI regularly publishes such notices to ensure operational transparency and minimize disruption to statutory filing deadlines.
Key Takeaways
- Scheduled Downtime: COI systems, which support critical tax and customs electronic services, will undergo maintenance on 3 September 2026, potentially causing temporary outages.
- Filing Planning: Taxpayers and intermediaries should schedule JPK_VAT submissions, PIT/CIT filings, and customs declarations before or after the maintenance window to ensure timely delivery.
- Digital Resilience: The advance notice reflects the tax administration’s commitment to predictable digital infrastructure management, allowing stakeholders to adjust compliance workflows proactively.
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