Czechia has no mandatory e-invoicing. Since 1 October 2016, public contracting authorities must accept e-invoices that follow the European standard EN 16931, but suppliers may still send paper or PDF invoices. Alongside UBL, the Commission names the national ISDOC format.
This page summarises the European Commission's country sheet for Czechia, checked on 5 November 2026. It is not tax advice; check the current Czech sources before relying on it.
What applies to whom?
| Obligation | Who | From | Channel | Status | Source |
|---|---|---|---|---|---|
| Accept EN 16931 e-invoices | Public contracting authorities, for contracts above the EU thresholds | 1 October 2016 | bilateral, often by data box | in force (Act No. 134/2016) | European Commission |
| Send e-invoices to public bodies | Suppliers | none | no obligation | European Commission | |
| Issue e-invoices to businesses or consumers | Businesses | none | by agreement | no obligation | European Commission |
Czechia has no real-time VAT reporting for invoices, and the Commission records no announced next step (European Commission).
How do invoices reach Czech public bodies?
There is no central invoice platform. Contracting authorities receive e-invoices bilaterally from their suppliers, often through data boxes (datové schránky), the mandatory electronic mailboxes for communication between companies and the state. The national e-procurement tool NEN accepts compliant formats (European Commission).
Which formats are used?
| Format | Used for | Notes |
|---|---|---|
| ISDOC | e-invoices in Czechia | national XML format, named by the Commission |
| UBL 2.1 following EN 16931 | invoices to public bodies | no national CIUS |
| EDIFACT | electronic data interchange between trading partners | named by the Commission among the formats in use |
What can Klarbon do with Czech invoices?
| You want to | Tool | Limit |
|---|---|---|
| Read a UBL or CII invoice | open an e-invoice, free | ISDOC is not supported |
| Check a file against EN 16931 before sending it to a public body | check an e-invoice | |
| Turn an e-invoice into another EN 16931 format, such as UBL or CII | convert an e-invoice, one credit | you deliver it yourself |
Related
E-invoicing deadlines by country
| Country | Scope | Obligation | From | Who | Source |
|---|---|---|---|---|---|
| Czechia | B2G | Receive | In law | Contracting authorities and entities covered by Directive 2014/55/EU for in-scope public procurement invoices conforming to EN 16931. | Official source |
Frequently asked questions
Is e-invoicing mandatory in Czechia?
No. There is no obligation to issue e-invoices to public bodies, businesses or consumers. Since 1 October 2016, Czech public contracting authorities must accept e-invoices that follow the European standard EN 16931, under Act No. 134/2016 on public procurement.
What is ISDOC?
ISDOC is the Czech national XML invoice format. The Commission lists it, with UBL 2.1 and EDIFACT, among the formats used for e-invoices in Czechia.
How do Czech public bodies receive e-invoices?
Bilaterally, from each supplier, often through the data boxes (datové schránky) that companies and the state use for official communication.
Does Czechia have a national CIUS?
No. Czechia applies the European standard EN 16931 without a national CIUS or extensions.