One of the most important financial decisions for professionals working in Poland is choosing between a B2B contract (own business activity) and a standard employment contract (umowa o prace). Both have distinct tax and social contribution structures that can result in significantly different take-home pay. This guide breaks down the 2026 numbers so you can make an informed choice.
Employment Contract: How Taxes and Contributions Work
Under an employment contract in Poland, your employer handles most of the administrative burden, but you face a full set of deductions from your gross salary:
- Social insurance (ZUS employee share): pension 9.76%, disability 1.5%, sickness 2.45% — total approximately 13.71% of gross salary
- Health insurance (NFZ): 9% of assessment base (approximately gross minus ZUS employee contributions), of which only 7.75% is deductible from tax
- Income tax: 12% on the first 120,000 PLN of annual income, 32% on the excess (tax-free allowance of 30,000 PLN per year applies)
On top of what you pay, your employer contributes an additional roughly 20% of your gross salary in employer ZUS (pension 9.76%, disability 6.5%, accident ~1.67%, Labour Fund 2.45%, FGSP 0.1%). This means the total employment cost to the employer is around 120-121% of your gross salary.
Example: Employment Contract at 15,000 PLN Gross / Month
Take a developer earning 15,000 PLN gross monthly in 2026:
- Employee ZUS: ~2,057 PLN
- Health insurance: ~1,168 PLN
- Tax base after deductions: approximately 12,700 PLN
- PIT at 12%: approximately 1,500 PLN (after tax credit)
- Net salary: approximately 10,275 PLN
- Total employer cost: approximately 18,050 PLN
B2B Contract: Taxes and Contributions
Running a sole proprietorship (jednoosobowa dzialalnosc gospodarcza) gives you flexibility in choosing your tax form and social contribution base. In 2026, the main options are:
- Linear tax (podatek liniowy): flat 19% on income, regardless of amount. No tax-free allowance. Health contribution is 4.9% of income (minimum floor applies).
- Tax scale (skala podatkowa): same 12%/32% brackets as employment, with the 30,000 PLN allowance. Health contribution 9% of income.
- Lump sum (ryczalt): fixed rates 8.5%, 12%, or 15% on revenue (not profit). Health contribution calculated on revenue bands.
For ZUS social contributions, B2B entrepreneurs can pay the preferential "maly ZUS" rate for the first 24 months (base = 30% of minimum wage, approximately 1,294 PLN/month in 2026), or the standard large ZUS (base = 60% of average wage, approximately 4,694 PLN/month in 2026). After the preferential period, most entrepreneurs pay large ZUS.
Example: B2B at 15,000 PLN Invoice / Month (Linear Tax, Large ZUS)
- Gross invoice: 15,000 PLN
- ZUS social contributions: ~1,773 PLN (deductible from income)
- Deductible business costs (conservative, minimal): ~500 PLN
- Tax base: ~12,727 PLN
- Linear tax 19%: ~2,418 PLN
- Health contribution 4.9%: ~624 PLN
- Net retained: approximately 9,685 PLN
At higher invoice values (e.g. 25,000 PLN), B2B with linear tax becomes clearly advantageous since employment income above 120,000 PLN annually is taxed at 32%, whereas B2B linear tax stays at 19%.
Key Factors to Consider
Raw net income is not the only variable. Consider:
- Benefits: Employment contracts include paid holiday (20-26 days), sick pay, parental leave rights, and employer contributions to PPK pension scheme.
- Security: Employment provides unemployment insurance and stronger labour law protections. B2B contractors can be terminated instantly.
- VAT registration: B2B contractors above 200,000 PLN annual revenue must register for VAT, adding administrative complexity.
- Business expenses: B2B allows deducting legitimate costs — laptop, phone, software, office — reducing tax base further.
- Pension: B2B with minimal ZUS base accumulates lower pension entitlements.
At What Salary Level Does B2B Pay Off?
As a rough rule for IT and professional services in Poland:
- Below 8,000 PLN gross equivalent: employment is often similar or better after benefits
- 8,000 - 12,000 PLN: borderline — depends heavily on benefits and individual situation
- Above 12,000 PLN: B2B with linear tax typically yields 1,000-3,000 PLN more net per month
- Above 167,000 PLN annual (second tax bracket for employment): B2B advantage is most significant
Use the salary calculator at Liczbnik.pl to compare your specific numbers under both scenarios — enter your expected monthly rate and toggle between contract types to see exact take-home amounts for 2026.
The right choice depends on your income level, risk tolerance, benefits package offered, and career plans. For most senior professionals earning above 15,000 PLN monthly, B2B with linear tax offers meaningful savings. However, always consult a Polish accountant (ksiegowa) before making the switch, as individual circumstances vary.