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Tax calendar 2026

Complete overview of tax deadlines

All key tax deadlines for 2026 in one place. Filter by taxpayer type and category to see only deadlines relevant to you.

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January 2026

January 15

Social insurance contribution statement for December 2025

Submission of the monthly contributions statement to the Social Insurance Agency for the previous month.

Employer
Contributions
January 20

VAT return and control statement for December 2025

Filing the VAT return and VAT control statement for December 2025 (monthly VAT payers).

LLC (s.r.o.)
Sole trader (SZČO)
VAT
January 25

VAT return and control statement for Q4 2025

Filing the VAT return and VAT control statement for Q4 2025 (quarterly VAT payers).

LLC (s.r.o.)
Sole trader (SZČO)
VAT
January 31

Overview of withheld income tax advances for 2025

Submission of the overview of withheld income tax advances from employment income.

Employer
Income tax

February 2026

February 15

Social insurance contribution statement for January 2026

Submission of the monthly contributions statement to the Social Insurance Agency.

Employer
Contributions
February 20

VAT return for January 2026

Filing the VAT return and VAT control statement for January 2026.

LLC (s.r.o.)
Sole trader (SZČO)
VAT
February 28

Annual settlement of tax advances for 2025

Performing the annual settlement of income tax advances upon an employee’s request.

Employer
Income tax

March 2026

March 15

Social insurance contribution statement for February 2026

Submission of the monthly contributions statement to the Social Insurance Agency.

Employer
Contributions
March 20

VAT return for February 2026

Filing the VAT return and VAT control statement for February 2026.

LLC (s.r.o.)
Sole trader (SZČO)
VAT
March 31

Income tax return for individuals and companies for 2025

Standard deadline to file the 2025 income tax return. Extension by 3 or 6 months may be available.

Sole trader (SZČO)
LLC (s.r.o.)
Income tax
March 31

Payment of income tax for 2025

Payment of the 2025 income tax (if you are not using a filing extension).

Sole trader (SZČO)
LLC (s.r.o.)
Income tax
March 31

Annual payroll tax report for 2025

Submission of the annual payroll tax settlement report.

Employer
Income tax

April 2026

April 15

Social insurance contribution statement for March 2026

Submission of the monthly contributions statement to the Social Insurance Agency.

Employer
Contributions
April 20

VAT return for March 2026

Filing the VAT return and VAT control statement for March 2026.

LLC (s.r.o.)
Sole trader (SZČO)
VAT
April 25

VAT return for Q1 2026

Filing the VAT return and VAT control statement for Q1 2026 (quarterly VAT payers).

LLC (s.r.o.)
Sole trader (SZČO)
VAT
April 30

Overview of withheld advances for Q1 2026

Submission of the quarterly overview of withheld and remitted income tax advances.

Employer
Income tax

May 2026

May 15

Social insurance contribution statement for April 2026

Submission of the monthly contributions statement to the Social Insurance Agency.

Employer
Contributions
May 20

VAT return for April 2026

Filing the VAT return and VAT control statement for April 2026.

LLC (s.r.o.)
Sole trader (SZČO)
VAT

June 2026

June 15

Social insurance contribution statement for May 2026

Submission of the monthly contributions statement to the Social Insurance Agency.

Employer
Contributions
June 20

VAT return for May 2026

Filing the VAT return and VAT control statement for May 2026.

LLC (s.r.o.)
Sole trader (SZČO)
VAT
June 30

Income tax return (extension +3 months)

Deadline to file the income tax return when using the 3-month extension.

Sole trader (SZČO)
LLC (s.r.o.)
Income tax

July 2026

July 15

Social insurance contribution statement for June 2026

Submission of the monthly contributions statement to the Social Insurance Agency.

Employer
Contributions
July 20

VAT return for June 2026

Filing the VAT return and VAT control statement for June 2026.

LLC (s.r.o.)
Sole trader (SZČO)
VAT
July 25

VAT return for Q2 2026

Filing the VAT return and VAT control statement for Q2 2026 (quarterly VAT payers).

LLC (s.r.o.)
Sole trader (SZČO)
VAT
July 31

OSS – VAT return for Q2 2026

Filing the OSS return and paying the tax under the One Stop Shop scheme for Q2 2026.

LLC (s.r.o.)
Sole trader (SZČO)
VAT
July 31

Overview of withheld advances for Q2 2026

Submission of the quarterly overview of withheld and remitted income tax advances.

Employer
Income tax

August 2026

August 15

Social insurance contribution statement for July 2026

Submission of the monthly contributions statement to the Social Insurance Agency.

Employer
Contributions
August 20

VAT return for July 2026

Filing the VAT return and VAT control statement for July 2026.

LLC (s.r.o.)
Sole trader (SZČO)
VAT

September 2026

September 15

Social insurance contribution statement for August 2026

Submission of the monthly contributions statement to the Social Insurance Agency.

Employer
Contributions
September 20

VAT return for August 2026

Filing the VAT return and VAT control statement for August 2026.

LLC (s.r.o.)
Sole trader (SZČO)
VAT
September 30

Income tax return (extension +6 months)

Deadline to file the income tax return when using the 6-month extension (foreign income).

Sole trader (SZČO)
LLC (s.r.o.)
Income tax

October 2026

October 15

Social insurance contribution statement for September 2026

Submission of the monthly contributions statement to the Social Insurance Agency.

Employer
Contributions
October 20

VAT return for September 2026

Filing the VAT return and VAT control statement for September 2026.

LLC (s.r.o.)
Sole trader (SZČO)
VAT
October 25

VAT return for Q3 2026

Filing the VAT return and VAT control statement for Q3 2026 (quarterly VAT payers).

LLC (s.r.o.)
Sole trader (SZČO)
VAT
October 31

OSS – VAT return for Q3 2026

Filing the OSS return and paying the tax under the One Stop Shop scheme for Q3 2026.

LLC (s.r.o.)
Sole trader (SZČO)
VAT
October 31

Overview of withheld advances for Q3 2026

Submission of the quarterly overview of withheld and remitted income tax advances.

Employer
Income tax

November 2026

November 15

Social insurance contribution statement for October 2026

Submission of the monthly contributions statement to the Social Insurance Agency.

Employer
Contributions
November 20

VAT return for October 2026

Filing the VAT return and VAT control statement for October 2026.

LLC (s.r.o.)
Sole trader (SZČO)
VAT

December 2026

December 15

Social insurance contribution statement for November 2026

Submission of the monthly contributions statement to the Social Insurance Agency.

Employer
Contributions
December 20

VAT return for November 2026

Filing the VAT return and VAT control statement for November 2026.

LLC (s.r.o.)
Sole trader (SZČO)
VAT
December 31

Payment of income tax advances for Q4 2026

Payment of quarterly income tax advances for individuals and companies.

Sole trader (SZČO)
LLC (s.r.o.)
Income tax

Important notice

This calendar is provided for guidance. Always verify current deadlines on the websites of the Financial Administration and the Social Insurance Agency. If a deadline falls on a weekend or a public holiday, it is shifted to the next working day.

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