Transition to a single tax from the general taxation system: a guide for individual entrepreneurs

FOP Transition from the General Tax System to the Single Tax in 2026

The transition from the general system to the simplified one is not just a change in the tax rate, but a change in the entire operating regime of an entrepreneur: rules regarding permitted activities, income limits, accounting, reporting, the use of cash registers/software cash registers, and specific restrictions for certain businesses. The application can be submitted from the beginning of the next quarter and only once during a calendar year. As of March 10, 2026, to switch to the single tax from April 1, 2026, the application must be submitted no later than March 16, 2026. (Law of Ukraine)

Who can switch to the simplified system

An individual entrepreneur (FOP) can choose the simplified system if they meet the requirements of the Tax Code for the corresponding group of the single tax. The main thing is to correctly determine whether your type of activity fits the chosen group, whether you fit into the income limit, and whether there is a direct legislative prohibition for your business to operate on the single tax. (Law of Ukraine)

In 2026, the income limits for FOPs are tied to the minimum wage set on January 1, 2026 — 8,647 UAH. Therefore, the maximum income is:

Which single tax group can a FOP choose

Group one

This is the narrowest regime. It is suitable only for FOPs without employees who are exclusively engaged in the retail sale of goods from trading places in markets and/or provide domestic services to the public. If the activity is broader, working in group 1 is not allowed. (tax.gov.ua)

Group two

This group is suitable for FOPs that provide services to single tax payers and/or the public, produce or sell goods, or work in the restaurant business. You can simultaneously have no more than 10 employees. (dp.tax.gov.ua)

There are important exceptions for group 2. It cannot be used by FOPs that provide intermediary services for the purchase, sale, lease, and valuation of real estate, provide internet access, or manufacture, supply, or sell jewelry and household items made of precious metals, precious stones, organogenic precious stones, or semi-precious stones. Such entrepreneurs can only be in group 3 if they meet its requirements. (zak.tax.gov.ua)

Group three

Group three is the most flexible for FOPs. An entrepreneur can work on it with any number of employees if the income limit is observed and there is no legislative prohibition on the type of activity itself. This group is most often chosen by FOPs working with B2B clients, having online sales, a broader list of KVEDs, or needing a freer format of work. (dp.tax.gov.ua)

When switching is prohibited

The simplified system does not apply to certain types of activities. Among the main prohibited areas are the organization and conduct of gambling, lotteries, foreign currency exchange, as well as the production, export, import, and sale of excisable goods, with specifically defined exceptions. For example, the Code separately allows certain exceptions for the retail sale of certain beverages and the sale of fuels and lubricants in containers up to 20 liters. (if.tax.gov.ua)

Separately, there is a restriction for the rental business. A FOP cannot be a single tax payer of groups 1–3 if they lease land plots with a total area of more than 0.2 hectares, residential premises with a total area of more than 400 square meters, or non-residential premises over 900 square meters. (zak.tax.gov.ua)

How to submit a transition application

An entrepreneur operating under other taxes and duties submits an application to the tax authority for the application of the simplified system no later than 15 calendar days before the start of the next quarter. Such a transition is possible only once during a calendar year. (zir.tax.gov.ua)

The application can be submitted:

To switch, an active FOP usually submits through the Electronic Cabinet:

After submitting electronic documents, the entrepreneur receives receipts in the Electronic Cabinet. If there are no grounds for refusal, the tax authority registers the single tax payer within two working days from the date of receipt of the application. In case of refusal, the tax authority is also obliged to provide a reasoned written response within the same period. (if.tax.gov.ua)

Grounds for refusal

The tax authority has the right to refuse if the entrepreneur does not meet the requirements of Article 291 of the Tax Code, has violated the transition conditions established by sub-paragraph 298.1.4 of the Tax Code, or there are other grounds explicitly defined by the Code. Therefore, before submitting the application, it is necessary to verify the KVED, the type of actual activity, the volume of income, the planned group, and the rate. (Law of Ukraine)

What taxes will the FOP pay after the transition

Single tax

For groups 1 and 2, the single tax rate is set by the local council. The maximum in 2026 is:

For group 3, the rate depends on VAT:

Military tax

In 2026, for single tax payers of groups 1 and 2, the military tax is paid in a fixed amount — 10% of the minimum wage established as of January 1 of the year, i.e., 864.70 UAH per month. For group 3, the military tax is paid at the rate of 1% of income. (tax.gov.ua)

Unified social tax (ESV)

The obligation to pay the unified contribution does not disappear after the transition. The basic ESV rate for FOPs is 22% of the determined calculation base. The minimum insurance contribution in 2026 is 1,902.34 UAH per month. (Law of Ukraine)

Cash registers (RRO/PRRO) after transition to single tax

The transition to the simplified system does not in itself mean automatic exemption from RRO or PRRO. If the FOP conducts settlement operations, they must be guided not only by the single tax group but also by the requirements of the RRO Law. The general rule is: when conducting settlement operations, you must use a registered RRO or PRRO and issue a settlement document of the established form to the buyer. (rv.tax.gov.ua)

FOPs in group 1 are exempt from using RRO/PRRO. For FOPs in groups 2 and 3 that conduct settlement operations, the obligation to use RRO/PRRO applies. (dp.tax.gov.ua)

The form and content of the receipt are determined by the Order of the Ministry of Finance No. 13, which is valid in the current wording taking into account the latest changes. Therefore, after the transition, it is necessary to check not only the fact of registration of PRRO or RRO but also the correctness of the details in the receipt. (Law of Ukraine)

Do you need to keep track of inventory

Not all FOPs on the single tax are required to keep track of inventory. Such an obligation arises only in cases where it is expressly provided for by Law No. 265. The form and procedure for keeping inventory records are established by the Order of the Ministry of Finance No. 496. For other single tax FOPs to which these requirements do not apply, there is no general obligation to maintain such records. (Law of Ukraine)

If inventory accounting is mandatory for your business, during an inspection you must have documents confirming the origin of the goods and properly executed accounting records. Selling goods not reflected in such accounting in cases where it is mandatory creates a risk of fines. (cv.tax.gov.ua)

What reports to submit after the transition

Single tax payer declaration

FOPs in groups 1 and 2 submit a single tax payer declaration annually. FOPs in group 3 submit a declaration quarterly. In 2026, the valid electronic forms in the register for FOPs include, among others:

Declaration of property status and income

If a FOP during the year spent part of the time on the general system and then switched to the single tax, they must submit an annual declaration of property status and income for the period of work on the general system. This is important because the transition to the single tax itself does not cancel the obligation to report on the income received before the transition. (Law of Ukraine)

Reporting on employees

If a FOP has employees, from January 1, 2026, entrepreneurs are subject to a quarterly procedure for submitting a tax calculation of income amounts, personal income tax, military tax, and ESV, but with a breakdown of indicators by months of the quarter. Therefore, after the transition, it is important not to confuse the regime of the FOP's own tax reporting and reporting as an employer. (rv.tax.gov.ua)

What changes in accounting after the transition

FOPs of groups 1 and 2, and FOPs of group 3 without VAT, keep records in an arbitrary form by monthly recording the income received. FOPs of group 3 with VAT keep records of income and expenses according to a standard form. Accounting can be kept in paper or electronic form, including through the Electronic Cabinet. (Law of Ukraine)

When single tax payer registration can be annulled

Registration as a single tax payer is indefinite, but it can be annulled in cases expressly provided for by the Tax Code. This can be a voluntary waiver of the simplified system, termination of business activity, or violations of the single tax application rules established during monitoring. That is why after the transition, it is necessary not only to properly submit the application but also to continue to comply with the requirements for the group, type of activity, rates, reporting, and settlement operations. (Law of Ukraine)

Conclusion

The transition from the general system to the single tax in 2026 remains a working tool for FOPs, but only on the condition that the entrepreneur has previously checked three things: whether their type of activity is allowed for the chosen group, whether they fit the income limit, and whether they are ready to work according to the rules of the simplified system regarding RRO/PRRO, accounting, and reporting. Most practical mistakes occur not at the application stage, but after the transition — when a FOP chooses the wrong group, ignores the obligation to use PRRO, misses reporting, or actually conducts an activity prohibited for the single tax. (zir.tax.gov.ua)

Official sources

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