Deregistering your cash register is your absolute obligation to the tax office.
You have only 5 days to do this from the moment the memory readout protocol is drawn up by an authorized service technician.
Failure to fulfill this obligation results in severe penalties (a ticket or a fine of up to 120 daily rates) and an order to repay the tax relief received for the purchase of the device.
Closing down your business, replacing your device with a newer model, or completely discontinuing sales records? You must formally deregister your fiscal cash register. Ignoring this obligation or exceeding the statutory deadlines is the easiest way to face painful financial penalties and unnecessary tax office audits. As the Fiskasy.pl brand, we are here to take this burden off your shoulders – we will guide you through the entire procedure quickly, lawfully, and protecting your money.
What does the cash register deregistration procedure look like?
Closing your business does not automatically remove your cash register from the system. Even after deregistering the company from CEIDG or KRS, the tax office indefinitely treats the device as active until you submit the appropriate documents.
Here are the steps you must take:
Deliver the cash register to the service center: Immediately after finishing work on the cash register, deliver it to an authorized service center.
Obtain the protocol: Our authorized service technician will perform the final fiscal memory readout, generate a settlement report, and draw up a protocol. Do not attempt to do this on your own – only a certified technician can prepare a valid document. Also remember that online cash registers do not transmit deregistration data automatically and always require technician intervention.
Submit documents to the tax office: Collect the protocol and deliver it to the tax office along with the fiscal report and an application prepared according to the Ministry of Finance template. According to the regulation of the Minister of Finance of June 25, 2025 (§ 32 sec. 1 item 3), you have exactly 5 days from the date the protocol is drawn up.
Penalties you must take into account
Take the deadlines very seriously. Delay or failure to report a cash register for deregistration carries specific consequences:
Fiscal penal sanctions: Pursuant to Art. 80 §1 of the Fiscal Penal Code, failure to submit the application and protocol risks a ticket or a fine reaching up to 120 daily rates.
Tax audits: Seeing an active cash register in the system, the tax office may summon you to perform a current periodic inspection, launch verification activities, or initiate an audit. If VAT irregularities are found, you also risk interest charges.
Obligation to return the tax relief: If you benefited from the relief for the purchase of a cash register (amounting in 2025 to up to 90% of the net price, maximum 700 zł) and withdraw the device without deregistering it before 3 years of recording, you will have to return the entire amount. Forfeiture of the relief (along with interest) also threatens you in the case of missing the mandatory technical inspection within 24 months of fiscalization.
What to do if you missed the formalities or the cash register broke down?
Did you exceed the 5-day deadline? Act immediately – exceeding the time limit does not exempt you from the obligation to deliver the exact same set of documents to the tax office.
In a situation where technical reasons (e.g., module failure) prevent a standard readout, the service technician must send the device directly to the manufacturer for a much more expensive laboratory readout. In this case, the manufacturer prepares an explanatory protocol, which is submitted to the tax office. Do not delay, so as not to generate additional costs.
You can find more information on this topic in the comprehensive article by ESC SA: Failure to deregister a fiscal cash register on time – what are the consequences?
Don't wait for a summons from the tax office.
Contact the Fiskasy.pl team today. We will conduct a secure readout of the fiscal memory and prepare complete documentation for you. Call us and be certain that everything has been handled correctly and on time!