The Financial Administration reports that on 11 August 2026, between 16:00 and 19:00, infrastructure improvement works will be carried out on the IS FS system. The works aim to enhance the stability, security and performance of the administration’s digital platforms, including the e‑invoice module, taxpayer portals and customs information systems. During the three‑hour window users may experience reduced availability or temporary service interruptions. The administration advises taxpayers and businesses to avoid submitting time‑critical filings during the maintenance window and to consult the public notice for any later‑scheduled interruptions. Similar works were performed on 12 August 2026 from 18:00 to 19:00, affecting a narrower set of services. The administration commits to transparent communication of future maintenance activities and to providing advance notice through its official channels.
Key Takeaways
- Infrastructure Improvement Window: On 11 August 2026 from 16:00 to 19:00, IS FS system works may cause reduced availability or temporary interruptions.
- Impact on Services: E‑invoice module, taxpayer portals and customs information systems may be affected.
- Preventive Guidance: Avoid submitting time‑critical filings during the window and monitor official notices for future maintenance schedules.
Disclaimer:This article is compiled and summarized based on publicly available information and is for general information and academic exchange purposes only. It does not constitute any form of formal tax advice, legal opinion, or basis for performance. For tax planning, please consult a qualified professional tax advisor or legal counsel.
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