More and more people in Poland run a sole proprietorship (jednoosobowa działalność gospodarcza, JDG) alongside a regular job — as an additional source of income or as a way to test a business idea while keeping the stability of employment. This creates what is known as an overlap of insurance titles (zbieg tytułów do ubezpieczeń), a situation in which one person simultaneously meets the conditions for social insurance coverage from two different sources. We explain how the settlement of ZUS contributions works in this situation in 2026, when an entrepreneur pays full contributions from the business, and when the health insurance contribution alone is enough.
What is an overlap of insurance titles
An overlap of insurance titles occurs when a person is subject to social insurance obligations from more than one source at the same time — for example, from an employment contract and from running a non-agricultural business. The regulations on the social insurance system do not require paying contributions from both titles in full twice over in such a situation. Instead, they determine which title is mandatory and from which one social security contributions may — but do not have to — be paid voluntarily. The salary received under the employment contract is the key factor here.
Salary from employment at least equal to the minimum wage — social security contributions from the business are voluntary
If, under the employment contract, the entrepreneur receives a salary of at least the minimum wage for work (PLN 4,806 gross in 2026), the mandatory social security contributions — pension, disability and accident insurance — are paid in full by the employer under the employment relationship. The entrepreneur does not then have to pay social security contributions from the business — they may do so voluntarily, for example if they care about continuity of sickness insurance (and thus the right to sick pay) or about a higher future pension. The decision to voluntarily join social insurance from the business rests solely with the entrepreneur and does not follow from any automatic mechanism.
Lower salary from employment — social security contributions from the business become mandatory
The situation is different when the salary from the employment contract is lower than the current minimum wage — most often the case for people employed part-time. In such a case, the employment relationship alone does not provide full, mandatory social insurance at the required level, so the entrepreneur must also pay mandatory social security contributions from the business — as if they had no employment contract at all. In practice, this means paying contributions under the same rules that apply to people running a business without additional employment, including the possibility of using the start-up relief (ulga na start), preferential ZUS or Mały ZUS Plus, provided the other conditions of those reliefs are met.
Health insurance contribution — always mandatory and from both titles at once
Regardless of the amount of salary from employment, the health insurance contribution from the business is always mandatory and is paid separately from the health insurance contribution deducted by the employer under the employment contract. This means that a person who is both employed and running a business effectively finances two health insurance contributions per month — one from the salary, one from the business. The amount of the second contribution depends on the tax form chosen for the business, just as for any other entrepreneur: under the tax scale and flat tax it cannot be lower than PLN 432.54 per month, while under the lump-sum tax (ryczałt) it depends on the annual revenue threshold.
Registration with ZUS: form ZUA or ZZA, and the 7-day deadline
Starting a business while under an employment contract requires registration for insurance with ZUS within 7 days of starting to run the business. If the entrepreneur — because of a salary from employment at least equal to the minimum wage — does not voluntarily join social insurance from the business, they file form ZUS ZZA, which registers them solely for mandatory health insurance. If, however, they choose voluntary social insurance from the business, or if social security contributions from the business become mandatory due to a low salary from employment, the correct form is ZUS ZUA, which covers both social and health insurance. It is worth keeping to this deadline, since a late registration may require corrections and explanations with ZUS.