Reliable accounting services
for your business in Poland!

How much it costs to run a group 3 PEF: cost calculation

Group 3 FOPs are a popular format for small businesses due to simplified accounting and predictable tax rules. However, in practice, entrepreneurs are faced not only with mandatory payments, but also with associated costs: banking, cash discipline, accountant services, electronic services and periodic reporting. In order to properly plan the financial burden, it is important to assess the full cost of running a PE in advance, rather than focusing solely on the single tax rate.

In this article, we will look at how much it costs to run a group 3 FOP, what elements make up the costs and how they depend on the presence of VAT, turnover, form of settlements and the chosen model of accounting (on your own or with the help of a specialist). We will also provide a calculation of typical scenarios and practical recommendations to help optimise costs without violating legal requirements.

Composition of compulsory payments of group 3 FOPs and the procedure for their calculation

For an entrepreneur under the simplified system (group 3), the «compulsory basket» of payments consists of several elements: some of them depend on the amount of revenue, some of them are fixed and payable even if there is no income. Usually the calculation takes into account:

  • Unified tax (UT) - a percentage of the income (revenue) received, without reference to expenses.
  • Self-employment tax - compulsory insurance premium, which the entrepreneur pays in the prescribed minimum amount within the limits of the regulations in force.
  • Banking services - fees for current accounts, acquiring, transfers (not a tax, but a regular mandatory expense for most FOPs).
  • Cash discipline (if necessary) - expenses for RPOs/PRPOs and service support (if the conditions of activity require their use).

In practice, it is more convenient to calculate costs according to the «base + percentage» scheme. The base is all fixed payments for the period, the percentage is a single tax on revenue (and additionally bank commissions, if you want to estimate operating costs more accurately). Below is a compact calculation template which can be adapted to your turnover and taxation regime:

Payment How it's counted What are you setting up
Unified tax (UT) Revenue × UPT rate Amount of income per quarter/month
Self-employment tax Fixed amount for the period Minimum payment (according to current regulations)
Bank charges Subscription fee + % from turnover/operations Tariff of your bank/acquiring bank
ERO/PRO (if applicable) Subscription/maintenance + fiscalisation costs Cost of service and number of operations

Costs of accounting support and selection of the optimal service format

Accounting support is usually included in the budget of a group 3 FOP as a regular «operational» expense: it directly depends on the volume of primary documents, the number of account transactions, the number of employees, and whether speed of response and risk control are important to you. When choosing a service format, it is rational to compare not only the price per month, but also the composition of the work: preparation and filing of reports, control of limits, reconciliations with the tax authorities, support of audits, consultations. Practice shows that the most expensive option is «one-off services without a system»: they often look cheaper at the start, but lead to overpayments due to fines, loss of time and additional charges.

Below is a guide to the formats most often chosen by Group 3 FOPs and what is typically included in the package. Use the checklist when evaluating proposals: fixed price (no surcharges for «each document»), terms (when the report is filed), communication channels (messenger/email/cabinet), accountability (whether it is stipulated in the contract). It is also useful to clarify in advance whether items such as work with PWP/PWP, human resources and preparation of certificates are included.

  • Independently: savings on services, but time cost + risk of errors when rates and forms change.
  • Freelance accountant: flexible on price, agreement on timing and replacement for holiday periods is important.
  • Outsourcing company: regulated service, standby team and quality control.
Format When it's appropriate What is usually included Risk of unscheduled surcharges
Independently Up to 10-15 operations/month. Accounting and reporting «in-house» Medium
Freelancing Steady flow, no employees Reporting + basic counselling Medium-high
Outsourcing Growth, contracts, inspections Reporting, reconciliations, support Low

Cost of using PWRS RPOs and software services for accounting and reporting

When accepting payments by card, via internet acquiring or cash, entrepreneurs often need cash register discipline. In practice, the choice boils down to a classic RRO (cash register/fiscal recorder) or a PFR (fiscalisation via an application/service). While an RRO usually entails the purchase of equipment, its maintenance and periodic replacement of consumables, a PWRS is more often arranged as a subscription and paid monthly. In addition, related payments should be considered in the budget: Qualified Electronic Signature (QES) to work with the tax authorities, as well as possible customisation services, integration with the online shop and staff training.

A separate item of expenditure is software services for accounting and reporting: from simple «submit a declaration» to complex accounting of sales, stock balances and mutual settlements. The choice depends on the volume of operations and how important it is to automate the routine. Usually, entrepreneurs combine fiscalisation and accounting in one interface or use a combination of several tools. Which is most often charged separately:

  • subscription to PWRS/cash service and the cost of cheque fiscalisation (if billing by transactions);
  • Internet acquiring or terminal (transaction/rental fee) if cards are accepted;
  • service for reporting (tax calendar, filling out declarations, sending to regulatory authorities);
  • accounting module (goods, warehouse, cost, CRM/orders) for trade and internet sales;
  • support and integrations: API, marketplaces, POS, accounting outsourcing on request.
Tool Type of costs Range, UAH/month Commentary
PRRO service subscription 150-600 Often cheaper than an ERO with a small cheque flow
Maintenance of EROs service/contract 300-900 plus one-time purchase/registration of equipment
Reporting service subscription 100-400 filing of declarations, notifications, templates
Accounting/warehousing subscription 250-1 200 relevant for trade and multichannel sales

Additional costs and budget planning recommendations for Group 3 FOPs

In addition to mandatory payments, Group 3 FOPs inevitably have additional cost items that «eat up» the margin if not budgeted for in advance. They often start with organisational minutiae and end with regular services: banking service, acquiring, transfer rates, rent/coving, communications, domains and hosting, electronic signature, CRM and accounting applications. If you work with clients on a contractual basis, add the costs of legal templates and consultations, and when working with personal data - on security settings and internal regulations. For control purposes, it is convenient to immediately divide payments into fixed and variable payments:

  • Permanent: account maintenance, software/subscriptions, communications, cloud drives, basic bookkeeping.
  • Variablesacquiring (percentage of turnover), marketplace commissions, logistics, advertising, freelance services.
  • One-offs: EDS, website setup, brandbook, start-up purchase, equipment.

For budget planning, it is practical to keep a «cost corridor»: minimum (survival) and working (growth). In the working scenario, fix a target reserve for taxes and unforeseen payments, as well as a limit for promotion, so that marketing is not financed from working capital. The benchmark can be fixed in a simple table and the plan/actual can be compared on a monthly basis; if turnover grows, automatically increase the item «commissions» and «advertising», and keep fixed costs under control by reviewing subscriptions.

Article Type How to budget
Account maintenance Permanent Fixed amount for the month + reserve for payments
Acquiring/commissions Variable % from turnover (to be withheld immediately when calculating the price)
Advertisement Variable Limit and KPIs; not to exceed revenue share
EDS and reporting services One-off/periodic Allocate to 12 months as amortisation

Final thoughts

To summarise, running a group 3 FOP requires careful planning and accounting of all possible costs. Correct calculation of expenses allows to effectively manage financial flows and minimise the risks associated with tax liabilities and administrative costs. A balanced approach to the organisation of accounting and timely compliance with legal requirements will ensure stability and transparency of the entrepreneur's activities. Thus, understanding the cost of running a group 3 PIF is an important element for successful business development and achievement of goals.

We provide a wide range of accounting services, including tax planning, bookkeeping, financial consulting and much more.
We are on social networks
© 2026 Accountant services in Poland. All rights reserved.
Service calculator
Total:
0 zlotys/month