Czech payroll managers have less than three weeks to master the country’s brand-new Unified Monthly Employer Report (Jednotné měsíční hlášení zaměstnavatele, JMHZ). Guidance published on 8 April 2026 by the Ministry of Labour and Social Affairs and the Financial Administration confirms that employers must upload company and employee data to new state registers by 30 April, even though the system only went live on 1 April.
![New Single Monthly Employer Report: Czech Authorities Clarify April Deadlines]()
While navigating these new requirements, companies may also need to verify the immigration status of foreign staff. VisaHQ’s Czech Republic service (https://www.visahq.com/czech-republic/) can quickly arrange work visas, residence permits and related documents, ensuring that the tax-residence information declared in the JMHZ aligns with each employee’s legal right to work.
The reform abolishes the previous requirement for separate tax-office registration of payroll income and folds all records into a single joint database shared with the Czech Social Security Administration. Crucially for global mobility, each employee’s country of tax residence—not nationality—must now be declared, meaning HR teams must check the status of cross-border commuters, short-term assignees and remote workers on Czech contracts. Mistakes or omissions will cause the filing to be rejected and could block the use of tax-relief ceilings or expatriate deductions. Back-filing is also required: the authorities want JMHZ reports for January–March 2026 submitted between 1 April and 30 June. The first “live” monthly report, covering April payroll, is due between 1 and 20 May. Fines start at CZK 10,000 and escalate rapidly if late. Practical implications include updating HR-information systems to capture foreign tax-residence codes, revising shadow-payroll arrangements for split-pay assignees, and notifying any external vendors. Multinationals are advised to run parallel test files before the 20 May cut-off to avoid costly rejects.
While navigating these new requirements, companies may also need to verify the immigration status of foreign staff. VisaHQ’s Czech Republic service (https://www.visahq.com/czech-republic/) can quickly arrange work visas, residence permits and related documents, ensuring that the tax-residence information declared in the JMHZ aligns with each employee’s legal right to work.
The reform abolishes the previous requirement for separate tax-office registration of payroll income and folds all records into a single joint database shared with the Czech Social Security Administration. Crucially for global mobility, each employee’s country of tax residence—not nationality—must now be declared, meaning HR teams must check the status of cross-border commuters, short-term assignees and remote workers on Czech contracts. Mistakes or omissions will cause the filing to be rejected and could block the use of tax-relief ceilings or expatriate deductions. Back-filing is also required: the authorities want JMHZ reports for January–March 2026 submitted between 1 April and 30 June. The first “live” monthly report, covering April payroll, is due between 1 and 20 May. Fines start at CZK 10,000 and escalate rapidly if late. Practical implications include updating HR-information systems to capture foreign tax-residence codes, revising shadow-payroll arrangements for split-pay assignees, and notifying any external vendors. Multinationals are advised to run parallel test files before the 20 May cut-off to avoid costly rejects.
