ZUS — the Polish Social Insurance Institution (Zakład Ubezpieczen Spolecznych) — collects mandatory contributions that fund pensions, disability benefits, sickness pay, and health insurance. Understanding how ZUS contributions are calculated is essential whether you are an employee receiving a payslip or a self-employed contractor comparing the real cost of B2B work.
Employee ZUS Contributions
As an employee, your contributions are deducted from your gross salary before PIT is calculated. The employee-side contribution rates are:
- Pension (emerytalne): 9.76% of gross
- Disability (rentowe): 1.5% of gross
- Sickness (chorobowe): 2.45% of gross
- Total employee ZUS: 13.71% of gross salary
On a gross salary of 6,000 PLN, employee ZUS amounts to approximately 822.60 PLN per month. These contributions reduce the income base for PIT calculation.
Employer-Side ZUS Contributions
Your employer pays additional contributions on top of your gross salary — costs you never see on your payslip but which significantly affect the total cost of employment:
- Pension: 9.76%
- Disability: 6.5%
- Accident insurance (wypadkowe): approx. 1.67% (varies by industry risk category)
- Labour Fund (Fundusz Pracy): 2.45%
- Guaranteed Employee Benefits Fund (FGSP): 0.10%
- Total employer ZUS: approximately 20.48% of gross salary
This means a 6,000 PLN gross salary actually costs your employer roughly 7,229 PLN in total employment cost.
NFZ Health Insurance
In addition to ZUS, both employees and self-employed individuals pay National Health Fund (NFZ) contributions of 9% of the calculation base. For employees, the base is the gross salary minus employee ZUS contributions. Unlike ZUS, NFZ contributions are no longer deductible from PIT since the Polish Deal reform — this was one of the most impactful changes for middle and higher earners.
Self-Employed: Full ZUS Contributions in 2026
Registered sole traders (działalność gospodarcza) who do not qualify for preferential rates pay contributions based on a declared base that cannot be lower than 60% of the projected average salary. For 2026, the minimum base results in total monthly ZUS of approximately:
- Social contributions (pension + disability + sickness + accident + FP + FGSP): ~1,485 PLN/month
- NFZ (9% of a separate base): ~430–500 PLN/month (scales with actual income)
- Total: approximately 1,900–2,000 PLN/month
Preferential Startup Rates (Maly ZUS / ZUS Preferencyjny)
New businesses in their first 24 months can use the preferential rate (ZUS preferencyjny), calculated on a base of just 30% of the minimum wage. In 2026, this results in social contributions of approximately ~470 PLN/month (excluding NFZ). This relief cannot be used if you previously ran a business for the same customer in the last 60 months.
Maly ZUS Plus (Income-Scaled Contributions)
After the preferential period ends, small businesses earning less than 120,000 PLN in the previous year may qualify for Maly ZUS Plus. Contributions are calculated as a percentage of actual income rather than the standard minimum base, potentially reducing monthly payments to between 500 and 1,200 PLN. The scheme has strict eligibility rules and requires annual re-registration.
B2B Reality Check
Contractors switching from employment to B2B often focus on the higher hourly rate. However, on B2B you pay both the employer and employee ZUS equivalents yourself, plus full NFZ. A genuine like-for-like comparison requires factoring in: ~2,000 PLN/month ZUS+NFZ (or ~470 PLN during startup period), no paid sick leave or holiday entitlement, and the cost of accountancy services (~150–300 PLN/month).
Use our free calculator: ZUS Contribution Calculator →