tax due for August 2026 (excluding excise duty on alcohol)
income tax
20/10/2026
monthly payment of the total of withheld advances on personal income tax from dependent activities for September 2026
income tax
20/10/2026
maturity of the lump sum advance payment
gambling tax
26/10/2026
tax return and tax due date for the 3rd quarter of 2026
value added tax
26/10/2026
tax return and tax due date for the 3rd quarter and for September 2026
value added tax
26/10/2026
summary report for the 3rd quarter and September 2026
value added tax
26/10/2026
control report for the 3rd quarter and for September 2026
energy taxes
26/10/2026
tax return and due date for gas, solid fuels and electricity tax for September 2026
excise tax
26/10/2026
tax due for August 2026 (only excise tax on alcohol)
excise tax
26/10/2026
tax return for September 2026
excise tax
26/10/2026
tax return for claiming a refund of excise duty pursuant to Section 56 of the Excise Duty Act (heat production) for the 3rd quarter of 2026
excise tax
26/10/2026
tax return for claiming the right to a refund of excise duty pursuant to Section 56a of the Excise Duty Act (other gasolines) for the 3rd quarter of 2026
excise tax
26/10/2026
tax return for claiming a refund of excise duty pursuant to Section 57 of the Excise Duty Act (forestry or pond farming) for the 3rd quarter of 2026
value added tax
31/10/2026
tax return and tax due date for OSS - non-EU regime, EU regime, import regime
value added tax
31/10/2026
submission of the notification on the amount of turnover per calendar quarter in the cross-border VAT regime for small enterprises (SMEs) for the 3rd quarter of 2026
value added tax
31/10/2026
submission of CESOP (Central Electronic Payment Information System) Notification for the 3rd quarter of 2026
