On 1 January 2027 the Czech electronic sales records system returns, this time as EET 2.0 (in Czech, elektronická evidence tržeb). Most articles cover who is affected and what to fill in on the tax portal. This one looks at something nobody thinks about until it fails: the network that carries your sales data. If you run a hotel, restaurant or cafe and your till shares WiFi with your guests, it makes sense to change that before the live launch.
The system covers sales received in personal contact with the customer or at the premises: cash, card payments, QR payments and similar. It applies to individuals and companies alike, and it does not matter whether you are VAT-registered. A payment for a room at the front desk or a restaurant bill therefore generally falls under it. Ordinary remote bank transfers and online shops with a payment gateway are not recorded. What counts is the place, the way and the circumstances of the payment, so if you are unsure about a particular case, check eet.gov.cz.
Compared with the EET of 2016 to 2020, the new system is lighter. A receipt for EET purposes is not mandatory, and only minimal data is recorded: the identity of the business, the premises and the till, a sequence number, date and time, and the total amount. You do not have to buy a new till. You can keep your current till system once the supplier updates it, or use the free web app MOJE eet.
Recording is online. The data is sent to the Financial Administration at the moment the sale takes place. If the internet goes down, sales are sent without delay once the connection is restored, and no later than 48 hours after the sale. Most tills have an automatic procedure for this and send unsent sales on their own after reconnecting. The MOJE eet app runs in a browser, so it also needs a working internet connection.
In practice, though, tills are more often held up by something other than a dead line: an overloaded guest WiFi. On a Friday evening forty guests sit in the restaurant, each with a phone in hand, and the network is saturated. The operator's internet is fine. But the till waits for a reply, the card terminal declines transactions and the waiter stands at the table.
Guests share the bandwidth and the number of connected devices. When the network is flooded, the till gets no priority. It simply waits in the same queue as videos and phone updates.
Anyone can end up on a guest network. Your till system and card terminal should sit on a network that guests cannot reach, even out of curiosity.
Login portals, speed limits and time limits belong on the guest network. On a till they only get in the way.
We describe the network architecture in more detail in WiFi for restaurants: how to set up the network for guests and staff.
A separate network solves congestion, not a dead line. Two more things belong with it.
Monitoring. It pays to watch the availability of every access point, the connection to the internet and the number of connected devices. If you learn about an outage within two minutes, rather than from guests or at closing time, you can react before unsent sales pile up.
Backup. If the till is essential to you, consider a second line or a mobile backup, plus backup power (UPS) for the router and switch. The backup line comes from your own carrier; we do not supply it. What matters is that the backup feeds the till network, not only the guest network.
EET 2.0 opens in the MOJE daně tax portal, together with certificate generation. Check on eet.gov.cz what applies to you and ask your till supplier whether an update is on the way.
A free web app, MOJE eet, launches for small businesses (a smartphone, tablet or computer is enough). If you plan to use it, make sure the device is on a stable network, not on overloaded guest WiFi.
Separate the till and terminal from the guest network, give them priority, switch on monitoring and decide on a backup connection. It is an afternoon of work, not a week, but do not leave it to the last day of the year.
EET 2.0 goes live (according to eet.gov.cz). Test an outage: unplug the internet and check how the till behaves and that it sends the sales once the connection is back.
Self-employed individuals in the first band of the flat-rate tax regime, whose income from self-employment did not exceed CZK 1 million in the previous year, can opt into the EET OFF regime. They must do so no later than the 10th day of the tax period (for 2027, by 10 January 2027). A late notice has no effect, and the regime cannot be changed during the year. It costs a surcharge of CZK 1,400 per month on top of the flat-rate advance payment, so weigh it up in advance.
WiFiSpráva.cz hosts and manages your UniFi controller in the cloud. In the context of EET 2.0 that means concrete things: we monitor your access points 24/7 and alert you by SMS and email within two minutes of an outage, we manage the devices remotely, and your network settings are kept together in one controller. Separating the till from the guest network is a standard UniFi configuration, and we are happy to discuss what it would look like at your premises. We do not supply backup lines from carriers or till software.
The main source of information on EET 2.0 remains the official website of the Financial Administration: eet.gov.cz. Keep an eye on it, as dates and procedures may still be refined.
Write to us and we will go through how to separate your till from the guest network and watch for outages.
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