JDG (sole proprietorship) is simpler, cheaper to run and gives free access to the money, but the owner is liable for the firm's debts with all of their property. A sp. z o.o. (limited liability company) separates private from business property and, with large, reinvested profits, can be more favourable in tax terms, but it requires full accounting and the payout of profit is taxed a second time. In 2026, for most single-person service providers, JDG remains the starting point, while a company becomes worthwhile as risk, scale and growth plans grow.
The key differences in one table
| Criterion | JDG | Sp. z o.o. |
|---|---|---|
| Registration | CEIDG, free of charge | KRS: PLN 250 (S24) or PLN 500 (notary and PRS), plus PCC 0.5% of capital |
| Capital | not required | at least PLN 5,000 |
| Liability for debts | all of the entrepreneur's property | shareholders not liable; management board members — subsidiarily, where enforcement against the company proves ineffective |
| Income tax | tax scale 12%/32%, flat tax 19% or ryczałt (e.g. 12% or 8.5% in IT) | CIT 9% (small taxpayer) or 19%, plus 19% on the paid dividend |
| Owner's ZUS | entrepreneur's contributions, with start-up reliefs | depending on the structure: a sole shareholder of a single-member company pays like an entrepreneur, a board member on a contract — from remuneration |
| Accounting | simplified (KPiR or revenue register) | full books of account and an annual financial statement filed with the KRS |
| Access to the money | any time, without formalities | remuneration, dividend or other legal titles; a plain transfer to a private account is a risk |
| Ending the business | deletion from CEIDG | liquidation usually lasting many months |
Liability — often more important than tax
An entrepreneur on JDG is, in the eyes of the law, the same person as their firm. A contractual penalty from a client, a claim for a defective product or a tax arrear can be satisfied from the flat, car or savings and, under statutory marital property, also from the spouses' joint property.
In a sp. z o.o., the shareholders are not liable for the company's obligations (Article 151 § 4 of the Commercial Companies Code). This protection, however, is not absolute. Management board members are jointly and severally liable for the company's debts if enforcement against it proves ineffective and they did not file a bankruptcy or restructuring motion in time (Article 299 of the Commercial Companies Code). Similar liability applies to tax arrears. A company therefore protects mainly against contractual risk, provided the board watches liquidity and reacts to insolvency.
Taxes: how much actually stays in your pocket
On JDG, tax is paid once on income (or on revenue under ryczałt), and the money after tax belongs to the owner. The health contribution must also be added, which differs by form: 9% of income on the tax scale, 4.9% on the flat tax and, on ryczałt, a fixed amount depending on the revenue threshold (in 2026, from PLN 498.35 to PLN 1,495.04 per month).
In a sp. z o.o., taxation is two-stage:
- the company pays CIT on its income — 9% if it is a small taxpayer (revenue up to the equivalent of EUR 2 million) or is starting out, otherwise 19%,
- the shareholder pays 19% tax on the paid-out dividend.
At the 9% rate, the combined burden on profit paid out in full as a dividend is about 26.3% (9% + 19% on the remaining 91%). That is more than flat tax on JDG. The advantage of a company appears only when:
- a significant part of the profit stays in the firm and is reinvested — then the burden is only 9% or 19% CIT,
- the owner earns so much that on JDG they would pay 32% on the scale or high health contributions,
- the company chooses the Estonian CIT, in which the tax is paid only on the payout of profit.
CIT rates, the conditions of small-taxpayer status and the rules of the Estonian CIT are described in our guide to CIT.
ZUS and running costs
An entrepreneur on JDG may, for the first 6 months, use start-up relief (health contribution only), then for 24 calendar months the preferential base (in 2026, PLN 1,441.80), and later — with revenue up to PLN 120,000 per year — Mały ZUS Plus (Small ZUS Plus). Full social contributions at the minimum base amount to PLN 1,926.76 per month in 2026 excluding the health contribution.
A sole shareholder of a sp. z o.o. is treated by ZUS similarly to an entrepreneur, but without reliefs for new firms, so they pay full contributions from the start. With two or more shareholders, participation in the company alone does not trigger insurance obligations, and contributions depend on the basis on which the shareholder works for the company. Costs of a company also include full accounting, the financial statement, fees for changes in the KRS and CRBR filings.
When to choose JDG and when a company — practical criteria
JDG is usually enough when:
- the entrepreneur provides services alone (e.g. a developer, graphic designer, consultant) and has limited damages risk,
- most of the profit is paid out for current needs,
- simplicity and the ability to use ZUS reliefs at the start matter.
A company is worth considering when:
- the firm signs large contracts with high contractual penalties or employs a team,
- several partners or an investor are to take part in the business,
- most of the profit will be reinvested,
- the owner plans to sell the firm in the future — shares are easier to transfer than a sole proprietor's enterprise.
Example: a developer with a growing team
Mr Tomasz ran JDG on 12% ryczałt for 3 years, settling with a single client. In 2026 he employs two subcontractors, negotiates a contract with a contractual penalty of up to PLN 300,000 and wants to invest in developing his own product each year. For him, the advantages of a company — limited liability and low CIT on reinvested profit — outweigh higher accounting costs. Instead of closing JDG, he can convert it into a company while keeping the contracts and continuing operations; we describe the procedure in the article how to convert JDG into a company.
Basic information on sp. z o.o. is published by Biznes.gov.pl.
How Good Balance helps
We compare both forms on the numbers of a specific entrepreneur and then set up the chosen one — a company in our service company registration or JDG in our service setting up a sole proprietorship. After registration we take over the accounting and settlements.