Starting a business and unsure whether to choose a JDG or a sp. z o.o.? We compare both structures in terms of taxes, ZUS, liability and operating costs in 2026.
Choosing a legal form is one of the first and most important decisions every entrepreneur faces. A sole trader business (JDG) is tempting for its simplicity and low start-up costs, while a spółka z ograniczoną odpowiedzialnością attracts with its protection of personal assets and prestige. In practice, the differences between these structures run much deeper and affect the day-to-day running of a business – from the way taxes are settled, through ZUS contributions, to liability towards business partners and creditors. In this article we compare JDG and sp. z o.o. point by point so that you can make an informed decision.
In a JDG, the entrepreneur is personally liable for all business obligations with their entire estate – both business and private assets. This means that in the event of financial difficulties, creditors may pursue the owner's savings, car or even real property. A sp. z o.o. works differently. As a separate legal entity, it is liable for its own debts, and shareholders risk only the capital they have contributed. The exception is the personal liability of management board members under Article 299 of the Commercial Companies Code (KSH) – if enforcement against the company proves ineffective, a creditor may pursue claims against the board members personally. Who does this matter to most? Above all, businesses operating in high-risk industries, companies taking out loans, and those working with large counterparties that require security.
A JDG offers several forms of taxation: • progressive tax scale (12% / 32%), • flat income tax (19%), • lump-sum tax on registered revenue (rates vary by industry). A sp. z o.o. pays CIT – 9% for small taxpayers (revenue up to EUR 2 million) or 19% for all others. Important: distributing profit to shareholders is subject to an additional dividend tax of 19%, creating so-called double taxation. This can be mitigated by paying remuneration for employment or appointment to office, but it requires careful planning. From 2025, JPK_CIT is also in force, which increases the reporting requirements for companies. This administrative cost is worth factoring in when comparing the two structures.
ZUS contributions are one of the key arguments in the JDG vs sp. z o.o. debate. An entrepreneur running a JDG is obliged to pay full ZUS contributions (or preferential rates in the first years of business) as well as the health insurance levy. Since 2022, the health insurance levy is linked to income and cannot be deducted from tax – a significant burden for high-earning entrepreneurs. In a sp. z o.o., a sole shareholder is treated as an entrepreneur and pays full ZUS. In a multi-shareholder company, however, shareholders are generally not subject to mandatory social insurance on account of their shares – although the situation depends on the specific circumstances. A management board president employed under a contract of employment may be covered by employee ZUS. Planning the remuneration structure in a sp. z o.o. requires individual analysis, but can deliver tangible savings.
A JDG is registered free of charge through CEIDG – the process takes literally a few minutes online. Record-keeping is simpler: depending on the form of taxation, a PKPiR (covered by JPK_PKPIR from 2026), a revenue register or a KPiR is sufficient. A sp. z o.o. requires: 1. Drawing up the articles of association (by notarial deed or via S24), 2. Contributing share capital (minimum PLN 5,000), 3. Registration in the KRS (court fee), 4. Maintaining full accounting records from the first day of operations. Full bookkeeping means higher accounting service costs, but also provides significantly broader opportunities for financial and tax planning. For businesses with higher turnover or plans for rapid growth, it is an investment that usually pays off.
The legal form affects not only taxes but also how the market perceives your business. A sp. z o.o. often inspires greater trust among large counterparties, financial institutions and investors. It makes it easier to obtain external financing (loans, leasing, EU grants) and to bring in new shareholders without having to close down the business. A JDG works excellently for freelancers, tradespeople, specialists providing services to private individuals, or entrepreneurs at the very start of their careers. It is simpler to administer and cheaper to maintain, particularly at lower revenue levels. If you are planning to scale your business, work with investors or hire employees on a larger scale, a sp. z o.o. offers considerably greater flexibility.
Converting a JDG into a sp. z o.o. is a step worth considering when: • your income regularly exceeds the 32% income tax threshold, • you want to separate your personal assets from your business assets, • you are planning to take on a partner or investor, • your counterparties expect to work with a company, • the business generates liabilities that you want to limit to business assets. The conversion can be carried out under a simplified procedure in accordance with the Commercial Companies Code (KSH) – the business retains its history, NIP and existing contracts. It does, however, require proper preparation of documentation and cooperation with a lawyer and an accounting firm. There is no single universally better option – everything depends on the nature of the business, future plans and the individual tax situation.
The choice between a JDG and a sp. z o.o. is a decision that should be based on a thorough analysis – not only of current costs, but also of development plans and risk tolerance. If you would like to discuss which structure is optimal for your situation, contact the Danexis accounting firm. Our specialists will analyse your case and recommend the most advantageous solution. Call us on +48 780 760 666 or write to kontakt@danexis.pl.