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Customer information for the implementation of the
German Cash Register Security Regulation (KassenSichV)

(Ordinance on the Protection of the Cash Register)

In order to fight tax evasion, the Federal Government of Germany has introduced stricter rules on the use of electronic cash registers. It applies to all business who record their cash receipts by means of an electronic cash register. 

According to a federal regulation, as of 1 January 2020, all cash registers must be protected by a certified technical security module which has been certified and approved by the Federal Office of Information Security (BSI). Some of our products, such as our PMS systems, will be affected by this regulation and will have to be upgraded accordingly.


Transition period until 30 September 2020*

In order to give all those affected ample time and opportunity to implement the necessary measures, the federal tax authorities have announced on 25 September 2019 to implement a so-called non-assertion regulation effective until 30 September 2020.

*This statement is based on reports from i.e., the German hospitality magazine “Gastgewerbe-Magazin”, or the German Bonn/Rhine-Sieg Chamber of Commerce and Industry. An official announcement by the German Federal Ministry of Finance (Bundesministerium der Finanzen, BMF) is in preparation and will be published after consultation with the German Federal States.

Irrespective of the expected transition period, the timely implementation of this regulation is of utmost priority for protel. We are working very hard to bring the technical safety modules to market as quickly as possible.

Similar to last year’s implementation of the Austrian Cash Register Security Regulation (RKSV), we will continue relying on the valuable cooperation with an experienced supplier who offers both an officially certified technical security module, as well as the necessary hardware. 

The cooperation of two experts in their respective fields guarantees an efficient and professional procedure, while ensuring that the individual effort on your side is kept to a minimum.

Stay up to date!

This page contains the newest information! This is where we will keep you up to date about new developments and, of course, take into account all of the information provided by the German Finance Ministry.

We recommend that you bookmark this page and visit it regularly.

The German version of this page shall prevail over the English version.

Join our Newsletter, and automatically stay up to date

What to expect?

  • If you are a protel Air customer, (Cloud) you will hardly notice anything through the automatic updates. We will be making the necessary system adjustments for you in the background in order to optimally prepare you for the changeover. 
  • If you are a protel SPE/MPE customer, (OnPrem) you will receive conformity in the form of an update. 
  • We plan to provide the Technical Safety Device (in German “Technische Sicherheitseinrichtung”, TSE) as a combination of hardware and cloud solution. Depending on the certification process of these systems by the German Federal Office of Information Security (BSI), different delivery times may occur.
  • The following applies to all customers: If the technical safety device involves a hardware solution, we assume that we will be able to announce a delivery date as of mid-October. 
  • If you use additional cash register solutions (e.g. a POS system), we recommend that you also inquire promptly about the conformity of your cash register systems with the respective suppliers.
  • Please also remember that you are obligated to register your cash register system with your local tax authorities.

KassenSichV – What is it?

The Ordinance on the Determination of Technical Requirements for Electronic Recording and Security Systems in Business Transactions (“Verordnung zur Bestimmung der technischen Anforderungen an elektronische Aufzeichnungs- und Sicherungssysteme im Geschäftsverkehr“, KassenSichV) is an ordinance issued by the German Federal Ministry of Finance, which stipulates new mandatory standards for preventing the manipulation of cash registers. 

The KassenSichV dated 26 September 2017 is based on the law concerning the Protection against Manipulation of Digital Basic Records dated 16 December 2016 and defines the basis for the technical implementation of this law. 

The regulation consists of a full range of measures, some of which have already come into force with the introduction of the cash register review (“Kassennachschau”). 

The final implementation of the Regulation, including the transitional period that was announced in September 2019, is planned for presumably 30 September 2020.

Three components

KassenSichV consists of the following components:

Obligation to issue receipts

After the end of the implementation period, issuing receipts will be mandatory for every business transaction. A receipt must be handed to the parties involved, albeit there is no obligation to accept it. 

Alternatively, a receipt can also be issued electronically, e.g., by email. In this case, the prior consent of the customer is required. 

Documents must meet the formal requirements. They need to contain the “code” transmitted by the technical security module.

As a protel customer, you’re on the safe side! We will adapt the invoice templates in time for the implementation so that they meet the formal requirements.

Technical safety device (TSE)

Every cash register must be upgraded with a technical safety device which records and business transactions and other procedures. While the term business transaction is clearly defined in accounting, ”other transactions” include e.g., cancellations, business transactions that have not yet been completed, or price checks in the POS system. One can therefore conclude that almost every interaction a user has with the system needs to be logged.

End-to-end logging

This also leads us to the significant difference between KassenSichV and similar regulations implemented in other countries. Whereas in other countries it is usually enough to log the data of the completed transactions after closing the accounts, in Germany the logging already begins with the first entry. The technical safety device logs will be updated throughout the entire process; this process only ends when the last transaction has been concluded. 

Receipt signature

After the process has been completed, the technical safety device sends a signature to the original system, such as the PMS. This signature must be printed on the receipt. Here you can use a QR code instead of the less attractive alphanumerical code.


The technical safety device must be certified by the German Federal Office of Information Security (BSI). Cash register systems that do not use a technical safety device certified by the BSI may no longer be used after the end of the implementation period. In addition, existing systems must be equipped accordingly.

Storage medium

The protocol data of the technical safety device must be stored in encrypted form on an electronic storage medium. Like the technical safety device itself, the storage media must also be kept available for audits by the authorities. 

We plan to implement the technical safety device as combined hardware and cloud solution, where you as a protel customer will have the choice between several all-in-one solutions. In any case, we will enable the secure archiving of the log data. Similar to the implementation of the RKSV in Austria in 2018, we are again cooperating with trusted partners with the implementation of the KassenSichV. As a result, we can fall back on tried and tested methods, providing you with a secure and prompt changeover. 

Registering your POS system

Another innovation is the obligation to register the POS system with the tax authorities, naming the serial numbers of the cash register and the TSE. When purchasing a new cash register system, the purchaser has one month to do so.

Stay up to date!

This page contains the newest information! This is where we will keep you up to date about new developments and, of course, take into account all of the information provided by the German Finance Ministry.

We recommend that you bookmark this page and visit it regularly.

The German version of this page shall prevail over the English version.

Join our Newsletter, and automatically stay up to date

Disclaimer of liability

The above-mentioned information was compiled by protel hotelsoftware GmbH (protel) with the utmost care and is continuously updated. protel makes no claim to its completeness, accuracy and timeliness.

protel does not assume any liability, guarantee or warranty for the information provided here. It merely represents a legally and technically complex issue in a simplified manner and offers an exemplary solution for implementation. In individual cases, deviations from the given recommendations may be necessary.

The statements are to be understood as an explanation for use and offer an approach as to how the legal requirements can be implemented properly. However, this does not release the user from the obligation to carry out a careful and independent examination.

Before transferring the unchanged content to the user’s own business, it must therefore be carefully considered in the user’s own interest whether, and in which part, an adjustment to the specific situation and legal development may be necessary. Of course, protel has no influence on this process and therefore assumes no liability for the effects on the legal position of the user. Liability for minor negligence is also generally excluded. 

Users requiring tailor-made information should seek legal consultation from a lawyer of their choice.

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