Useful links, information and tools
Here you will find useful information, links and tools to help you in your daily work.
Links
Tax Office e-Portal
Central Register of Business Activity (CEIDG)
National Court Register (KRS)
ZUS Electronic Services Platform
PKD Codes (Business Classification)
Tax micro-account generator
National Tax Information (KIS)
VAT Taxpayers List (White List)
VAT Number Verification - VIES
ZUS contribution account number lookup
e-Documents and declarations
Registers and search engines
HR and payroll
Calendar
Friday, 30 January 2026
Income tax for December:
Deadline passed on 21.01.2026.
Next deadline: 20 March 2026.
Deadline passed on 21.01.2026.
Next deadline: 20 March 2026.
VAT for December:
Deadline passed on 26.01.2026.
Next deadline: 26 March 2026.
Deadline passed on 26.01.2026.
Next deadline: 26 March 2026.
ZUS contributions for December:
Budget units:
Deadline passed on 06.01.2026.
Next deadline: 06 March 2026.
Deadline passed on 06.01.2026.
Next deadline: 06 March 2026.
Legal entities:
Deadline passed on 15.01.2026.
Next deadline: 16 March 2026.
Deadline passed on 15.01.2026.
Next deadline: 16 March 2026.
Other payers:
Deadline passed on 20.01.2026.
Next deadline: 20 March 2026.
Deadline passed on 20.01.2026.
Next deadline: 20 March 2026.
NBP average exchange rate table A
as of 2026-01-29
as of 2026-01-29
Euro: 4.2072
US Dollar: 3.5189
Swiss Franc: 4.583
British Pound: 4.8574
Czech Koruna: 0.1731
Ukrainian Hryvnia: 0.082
Hungarian Forint: 0.011026