Software RRO or fiscal registrar: what should a business choose in 2026

The choice between a software RRO and a classic hardware RRO is not a choice between "with the tax office" and "without the tax office." It is a choice between two legal ways to fiscalize settlement operations. The general rule is the same for everyone: if a business conducts settlement operations in the field of trade, catering, or services, they must be carried out through a registered RRO or a registered PRRO, issuing a settlement document of the established form to the buyer. The exception for single-tax sole proprietors (FOP) practically remained only for the first group. (Law of Ukraine)

What PRRO and classic RRO have in common

Both a software RRO and a classic RRO perform the same fiscal function: they register sales, generate a receipt, transmit data to the tax office, and provide daily reports. The law explicitly recognizes that a settlement document can be created in paper and/or electronic form, and fiscal reports and daily reports can also exist in paper and/or electronic form. Therefore, the statement that "a hardware RRO is only a paper receipt, and an electronic receipt can only be issued by a PRRO" no longer corresponds to current regulations. (Law of Ukraine)

The practical difference between them is not in the fiscal outcome, but in how the work is organized: what the cash register runs on, how it is registered, how the business operates in the absence of communication or electricity, whether a service center (TSO) is needed, how cashiers are registered, which object the cash register is tied to, and what backup scenarios exist in case of failure. (Law of Ukraine)

When it is more profitable to choose a software RRO

A software RRO is a software solution installed on a device owned, held, or used by a business entity. Its launch does not require sealing or the involvement of a service center: PRROs are registered electronically using form No. 1-PRRO, where the business assigns a local number in the application, and cashier certificate data or seals are submitted via form No. 5-PRRO. Only individuals whose certificates are entered in the Register can work through a PRRO. (Law of Ukraine)

For small businesses, online stores, courier delivery, mobile trade, or businesses with several work devices, a PRRO is usually simpler to start. The tax office separately clarifies that the software can be installed on multiple devices, but one registered PRRO can only be used on one device and by one cashier at a time. This makes PRRO convenient for flexible sales models but requires discipline with shifts and cashier keys. (cv.tax.gov.ua)

Another strength of a PRRO is working without a constant connection to the fiscal server. In standard offline mode, a session can last no more than 36 consecutive hours and no more than 168 hours within a calendar month. During martial law and in the presence of force majeure, the law allows these limits to be exceeded. For businesses operating in regions with unstable internet, this is an important advantage, but it does not cancel the obligation to subsequently transmit the data package to the fiscal server. (Law of Ukraine)

PRRO is especially relevant where businesses value mobility, the absence of hardware cash registers, electronic receipts, remote registration, and rapid scaling to new locations or new cashiers. If you do not need a service center, separate hardware equipment, and a paper backup scenario via KORO/RK, a software format will usually be organizationally easier. (Law of Ukraine)

When it is better to choose a classic fiscal registrar

A classic RRO is a hardware registrar. To use it, the model must be included in the State Register of RROs, and the device itself goes through a registration procedure, reservation of a fiscal number, sealing, and commissioning. Hardware RROs follow a service model through a service center (TSO), and businesses sign maintenance and repair contracts with them. (tax.gov.ua)

A classic RRO is more frequently chosen by shops, pharmacies, food establishments, and other stationary points where the cash register operates continuously in one place, and it is crucial for the business to have a separate backup mechanism in case of a power outage or breakdown. The law explicitly allows, during a device failure or temporary power outage (but no more than 7 working days), to process settlements via KORO and a settlement book or a properly registered backup RRO. This specific norm makes a hardware RRO a stronger option for businesses that cannot stop sales due to a lack of electricity or a primary cash register malfunction. (Law of Ukraine)

Another practical difference lies in data architecture: for classic RROs, the law specifically mentions electronic copies of receipts and fiscal reports contained on the control tape in the RRO's or modem's memory; for PRROs — transmitting electronic copies of settlement documents and electronic fiscal reports created by the software solution itself to the tax office. For businesses, this implies a different technical approach to storing and transmitting data, although the legal outcome is the same. (Law of Ukraine)

Cases where the choice is factually determined by law

There are areas where freedom of choice is limited. The strictest example is fuel. Ministry of Finance regulations explicitly prohibit the use of a PRRO during the wholesale and/or retail trade of fuel. Such a business requires a hardware RRO, as well as a separate licensing regime under Law No. 3817-IX. (Law of Ukraine)

For excisable goods in general, both formats can be used (except for fuel trade), but the requirements here are much stricter. Both RRO and PRRO must conduct such operations in a programming mode, indicating the UCT EAD product subcategory code, name, price, and quantity accounting, and for the retail sale of alcoholic beverages, the digital value of the excise tax mark barcode. Separately, there remains an obligation to have appropriate licenses for alcohol, tobacco, e-cigarette liquids, and other excisable goods under Law No. 3817-IX. (Law of Ukraine)

For an online store, the decisive factor is not the website itself, but the payment method. If a buyer transfers money to the seller's current account via IBAN details, the tax office officially clarifies that an RRO/PRRO is not applied. However, if payment is accepted via a card through acquiring, a payment button, POS terminal, or other payment instrument as part of a settlement operation, a receipt is required. Thus, for online businesses, the question is often not "PRRO or fiscal registrar," but "do I have a settlement operation?" (vin.tax.gov.ua)

Delivery, couriers, and mobile trade

For goods delivery, the legal choice between a PRRO and a hardware RRO also depends on the operating model. If a seller hands over the goods to a forwarder for delivery to a buyer, the tax office requires providing the buyer with a fiscal receipt generated no later than the moment the goods are received. If trading or providing services occurs at the buyer's location, the RRO/PRRO can be registered to a stationary or mobile business unit; if the work is done without a vehicle, the receipt specifies the name and address of the stationary business unit to which the cash register is registered. (tax.gov.ua)

This is why a PRRO is often more profitable for delivery, service businesses, and mobile trade: it is easier to deploy on a tablet or smartphone, and the business unit itself can be properly registered as stationary or mobile via form No. 20-OPP. But if operating during power outages or without internet using a paper backup scenario is critical in a courier model, a hardware RRO may be organizationally safer. (evp.tax.gov.ua)

Documents, premises, and address of the business unit

For both RRO and PRRO, a business must properly register its business unit. Data from form No. 20-OPP is subsequently used to register cash register equipment, and the business unit's address on the fiscal receipt must match property or lease documents and the details reported to the tax office. An error in the address, object name, or business unit status is one of the most common causes of problems with cash register registration and subsequent operation. (tr.tax.gov.ua)

Therefore, if a business operates in its own store, a rented premises, salon, warehouse, office, or mobile facility, the question of "what to choose" should be decided only after the documents for the premises or place of activity are in order, and the data has already been submitted via form No. 20-OPP. Without this, both a PRRO and a hardware RRO can create more problems than benefits. (dp.tax.gov.ua)

What to choose in typical situations

If you have one or two stationary points, a cashier works at a permanent workplace, and it is critical for the business to have a backup scenario via KORO/RK or a backup RRO in case of a power outage or breakdown, a hardware RRO will usually be a more practical solution. This conclusion stems directly from the fact that the law provides a paper backup mechanism during a failure specifically for a classic RRO. (Law of Ukraine)

If a business is mobile, operates on the road, through couriers, in a service, or in online trade where flexibility, an electronic receipt, the absence of a service center, and quick addition of new cashiers are important, a PRRO often wins. Legally, it is easier to launch, runs on a standard device, and electronic document management is its base model. (Law of Ukraine)

If a business trades in fuel, the issue is closed: a PRRO is not suitable. If it trades in alcohol, tobacco, e-cigarette liquids, or other excisable goods, both formats can be chosen, but only subject to proper product programming, labeling, possession of licenses, and readiness to face higher penalties for mistakes. (Law of Ukraine)

What is often done wrong

The most common mistake is relying on outdated comparisons. In 2026, one can no longer write that a hardware RRO "only prints a paper receipt," that a PRRO is "always cheaper," or that the old reduced fines of 25% and 50% apply to most sole proprietors. Both paper and electronic receipt formats are allowed for both solutions, and the reduced rates of 25% and 50% were temporary, applying only until July 31, 2025, for a strictly defined category of FOP. (Law of Ukraine)

A second typical mistake is perceiving a PRRO as a way to "bypass" requirements for premises documents, 20-OPP, cashiers, or excisable goods licenses. A PRRO simplifies the technical model of a cash register but does not cancel tax accounting of the business unit, the licensing regime, or receipt requisite requirements. (tr.tax.gov.ua)

A third mistake is thinking that one must pick one option forever. The tax office officially clarifies that legislation does not prohibit using a hardware RRO and a software RRO side by side. Thus, a business can operate in a mixed model: for instance, keeping a hardware RRO in a store while using a PRRO for delivery or a seasonal point. If a PRRO fully replaces a hardware RRO, the latter's registration must be canceled. (lv.tax.gov.ua)

Fines to consider when choosing

The base fine for failing to conduct a settlement operation through an RRO/PRRO, conducting it for a partial amount, or failing to issue a proper receipt currently stands at 100% of the sale amount for the first violation and 150% for each subsequent one. For excisable goods, there is an additional sanction of 300 tax-free minimum incomes for conducting operations without programming the product name, UCT EAD code, price, and quantity. (Law of Ukraine)

During martial law, the law continues to include a special exemption from liability for certain non-excisable violations committed in temporarily occupied territories, active combat zones, and potential combat zones—within the limits and timeframes expressly defined by law. However, this is not a universal exemption for all businesses nationwide. For most entrepreneurs, choosing between a PRRO and a hardware RRO must be based on the currently active general sanctions. (Law of Ukraine)

1. Software RRO (pPRRO) in Торгсофт

A software RRO is a built-in module directly within the Торгсофт program that turns your computer or smartphone into a fully-fledged cash register.

Advantages of pPRRO:

Disadvantages of pPRRO:

2. Classic (Hardware) Fiscal Registrar (FR)

This is a physical device (e.g., Datecs, Excellio, Maria, Help Micro, etc.) that connects to a computer via a cable (USB/COM) or local network (TCP/IP).

Advantages of a classic RRO:

Disadvantages of a classic RRO:

Final comparison: Which to choose?

Choose a Software RRO (pPRRO) if:

Choose a Classic (hardware) RRO if:

Summary: For 95% of modern small and medium businesses, the Software RRO is the undisputed leader. It is cheaper, more flexible, automatically updated to legislative changes by Торгсофт developers, and frees the entrepreneur from unnecessary bureaucracy with service centers.

Conclusion

For most small shops, service companies, online stores, courier services, and mobile commerce, the most rational choice in 2026 will be a PRRO: it registers easier, requires no service center, works well with electronic receipts, and is better suited for flexible sales models. For heavy-load stationary points, for businesses that require a backup paper scenario via KORO/RK, and for fuel trade, a hardware RRO is more practical or strictly mandatory. The final decision should not be based on old tables from the internet, but on the real sales model, payment method, license availability, blackout risk, and business unit requirements. (Law of Ukraine)

Official sources

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