Czech Republic officially publishes EET 2.0 Law and new technical guidance for POS Systems

The Czech Republic has officially published Act No. 180/2026 Coll., establishing the legal framework for EET 2.0. The Tax Authority also released detailed guidance on sales data reporting, helping retailers and POS providers prepare for the system’s launch on January 1, 2027.

On October 15, 2026, the Czech Financial Administration announced the official publication of Act No. 180/2026 Coll., on Sales Registration and Amendments to Certain Other Acts, in the Collection of Laws. This represents an important step in the introduction of the country's new electronic sales registration system, known as EET 2.0.

Alongside the legislation, the authorities published an explanatory report describing the objectives, basic principles, and individual provisions of the law. The report provides additional clarification to help businesses understand the new legal framework and prepare for their obligations.

Both documents are available through the official EET 2.0 documentation section: https://eet.gov.cz/cs/informacni-servis/2026/popis-polozek-datove-zpravy-s-priklady-jejich-vypl-1344 

The publication is particularly relevant for retailers, hospitality businesses, POS software developers, and technology providers that will need to adapt their systems to the new requirements.

According to the official implementation timetable, EET 2.0 will begin regular operation on January 1, 2027. January will serve as a pilot period for observing the system in practice, but transactions will already be subject to standard sales registration.

On the same day, the Financial Administration published a new methodological document titled Description of Data Report Items with Examples of Completion.

The 34-page document, version 1.0 dated October 5, 2026, provides detailed explanations of the information businesses must transmit to the EET 2.0 system.

It complements the existing technical specification by explaining individual data fields, their purpose, how they should be completed, and how they relate to the Sales Registration Act.

The guidance is primarily intended for POS software developers, cash register system providers, and other technical partners responsible for integrating business systems with EET 2.0.

Importantly, it does not introduce a separate reporting obligation. Instead, it explains how to implement the requirements established by the legislation and existing technical specifications.

The new guidance clarifies the structure of sales data messages transmitted to the Tax Authority.Each message contains mandatory information identifying the taxpayer, the cash register, and the recorded transaction.

The main required data includes:

• A unique message identifier (UUID).
• The date and time the message is transmitted.
• An indication of whether the message is being sent for the first time.
• The taxpayer's registration identification number (EIČ).
• The identification of the registered business unit.
• The identification of the cash register device.
• The sequential transaction number.
• The date and time of the transaction.
• The total transaction amount.

Additional fields must be completed when relevant, including information about authorized taxpayers and certain payments intended for later use or settlement.

The authorities also clarify that data messages do not contain customer names, payment card numbers, individual purchased products, or VAT information.

The guidance covers several important situations that retailers and POS providers frequently encounter:

• Sales recorded on behalf of another taxpayer: The document explains how to report transactions involving representatives or businesses authorized to record sales for another taxpayer.
• Cancellations and corrections: Practical examples demonstrate how incorrect transactions, refunds, and corrections should be reflected in the reporting system.
• Advance payments and final payments: The guidance explains how deposits and subsequent payments are treated, including situations where payments take place at different times.
• Returnable packaging: Businesses receive examples of how to report payments for returnable containers and the refund of related deposits.
• Tips: The document clarifies the treatment of tips and the circumstances relevant to their registration.
• Discounts and other adjustments: Examples show how the actual amount received should be reported when discounts affect the final transaction value.
• These examples are particularly useful for businesses operating complex checkout processes or handling different types of payments.

Another important area addressed by the new methodological guidance concerns situations where the POS system cannot establish communication with EET 2.0.

The document explains how businesses should proceed when the permitted response time is exceeded or when internet connectivity is interrupted.

It also clarifies the treatment of repeated data transmissions, including how systems distinguish between an initial submission and another attempt to report the same transaction.

For POS providers, these explanations are important because systems must handle unsuccessful transmissions correctly without creating duplicate sales records.

The document additionally addresses the use of cloud services, making the guidance relevant to modern POS architectures where transaction processing or communication may involve remote infrastructure. Under the published guidance, cash register systems must use a response timeout of at least two seconds. If communication fails, sales data must be transmitted as soon as the problem is resolved and no later than 48 hours after the transaction. The reporting obligation continues even if that deadline is missed.

Cloud-based reporting is permitted, provided the security of cash register certificates and private keys is properly addressed. Businesses remain responsible for complying with sales registration obligations when using external service providers.

The Financial Administration has already made technical documentation and a testing environment available to developers. Additional registration and certificate-management services are scheduled to become available from November 1, 2026. For retailers, the immediate priority is to confirm that their POS providers are implementing the required functionality. For software developers, the new document provides an important reference for completing integrations and testing transaction reporting before January 2027.

Implementation impact and what businesses should do

The publication of Act No. 180/2026 Coll. confirms the legal framework for EET 2.0, while the new methodological document provides practical instructions for implementing sales reporting requirements. For retailers and retail chains: Review existing checkout processes, confirm that POS systems will support EET 2.0, and coordinate implementation and testing with software providers. For POS software vendors and developers: Review the new guidance, implement mandatory and conditional data fields, verify transaction reporting for different business scenarios, and test communication, corrections, and offline procedures.

Key implementation date: January 1, 2027, when EET 2.0 is scheduled to begin regular operation.

The source for this text above is a news article published by tha Czech Tax Authority - Source

Nikolina Basić, Senior Legal Consultant at Fiscal Solutions

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