The State Tax Service of Ukraine (STS) warns of probable restrictions in work from December 31, 2025 to January 2, 2026 due to routine and technical works. According to information in its Telegram channel, the works are related to the end of the budget year 2025 and the beginning of the budget year 2026.
“During this period there may be restrictions in the work of electronic services of the State Tax Service. December 31, 2025 – the last operational day of 2025 for the reception and processing of tax invoices and calculations of the adjustment to tax invoices to the Unified register of tax invoices, which will continue until 3 pm,” – explained STS.
At the same time, January 2, 2026 is defined as the first operational day of 2026 to accept for processing of tax invoices and adjustment calculations, information and communication systems of STS will work in normal mode.
The results of processing electronic documents, except for tax invoices and adjustment calculations, which will be received from 15:00 on December 31, 2025 to 15:00 on January 2, 2026, will be sent after the completion of routine and technical work.
Also in the STS emphasized that the fiscal server of the supervisory authority works in normal mode with possible restrictions at night.
