Employment Contract vs. B2B — A Complete Comparison for 2026
Choosing between an employment contract (umowa o prace, or UoP) and B2B cooperation is one of the most important financial decisions facing many professionals in Poland. The difference in net pay can amount to tens of thousands of zloty per year, but the number on your bank account is only part of the picture. This article compares both models in terms of costs, taxes, security, and flexibility — so you can make an informed choice.
Key Differences at a Glance
| Aspect | Employment Contract | B2B (Sole Trader) | |--------|-------------------|-------------------| | Legal basis | Labour Code | Civil Code | | Form | Employment relationship | Commercial cooperation | | Social insurance (ZUS) | Paid by employer and employee | Paid entirely by the entrepreneur | | Income tax | PIT: progressive (12%/32%) | PIT: progressive, flat 19%, or lump sum | | Paid leave | 20 or 26 days | None (must negotiate) | | Sick leave | 80-100% of salary | ZUS sickness benefit (if voluntary contribution paid) | | Dismissal protection | Yes (notice periods, cause required) | Per contract (typically 1-3 months) | | Liability | Limited to 3 months' salary | Full civil liability |
Tax and Contribution Burden — Employment
Under an employment contract, costs are shared between the employer and employee.
What the Employer Pays (on top of gross salary)
- Pension contribution: 9.76% of gross
- Disability contribution: 6.50% of gross
- Accident insurance: 1.67% (average)
- Labour Fund: 2.45%
- Guaranteed Employee Benefits Fund (FGSP): 0.10%
In total, the employer pays roughly 20.48% on top of the gross salary. This means your "employer cost" is significantly higher than the figure on your contract.
What Is Deducted from the Employee's Gross Salary
- Pension contribution: 9.76%
- Disability contribution: 1.50%
- Sickness contribution: 2.45%
- Health insurance: 9% (calculated on gross minus social contributions)
- PIT advance: 12% (up to 120,000 PLN/year) or 32% (above)
- Tax-free amount: 30,000 PLN/year (reduces tax by 3,600 PLN)
Tax and Contribution Burden — B2B
As a B2B contractor, you are responsible for all contributions and taxes yourself.
ZUS Contributions
ZUS amounts depend on your stage of business:
- Ulga na Start (first 6 months): health insurance only — approx. 420 PLN/month
- Preferential ZUS (next 24 months): approx. 456 PLN/month + health
- Maly ZUS Plus (after preferential, if eligible): contributions based on revenue
- Full ZUS: approx. 1,774 PLN/month (2026)
See the article ZUS Contributions for a New Business for details.
Income Tax — Your Options
On B2B, you can choose your tax form:
- Progressive scale (12%/32%): with 30,000 PLN tax-free amount, favourable at lower incomes
- Flat tax (19%): no tax-free amount, cost-effective above ~140,000 PLN annual income
- Lump-sum tax (ryczalt): rate depends on service type (e.g., 12% for IT, 15% for certain services), no cost deductions allowed
Health Insurance on B2B
Since 2022, the health contribution depends on your tax form:
- Progressive scale: 9% of income
- Flat tax: 4.9% of income (min. ~420 PLN/month)
- Lump-sum: fixed amount depending on revenue (3 tiers)
Practical Example — Cost Comparison
Suppose the employer is willing to spend 15,000 PLN per month on you (total employer cost).
Employment Scenario
| Item | Amount | |------|--------| | Employer cost | 15,000 PLN | | Employee gross | ~12,450 PLN | | Social contributions (employee) | ~1,710 PLN | | Health insurance | ~966 PLN | | PIT advance (12%) | ~967 PLN | | Net (take-home) | ~8,807 PLN |
B2B Scenario (invoice for 15,000 PLN net, flat tax, full ZUS)
| Item | Amount | |------|--------| | Revenue (net invoice) | 15,000 PLN | | ZUS social contributions | ~1,250 PLN | | Health insurance (4.9%) | ~674 PLN | | Deductible costs (e.g., equipment, office) | ~500 PLN | | Taxable base | ~12,576 PLN | | Flat tax 19% | ~2,389 PLN | | Net (take-home) | ~10,187 PLN |
Difference: approx. 1,380 PLN per month in favour of B2B (16,560 PLN annually).
With preferential ZUS, the difference would be even larger. You can calculate your exact situation using the UoP vs B2B calculator.
Employee Rights — What You Lose on B2B
Paid Leave
On employment, you get 20 or 26 days of paid holiday. On B2B — zero guaranteed. You can negotiate breaks in service delivery with your client (usually unpaid), but there is no legal entitlement.
Sick Leave
On UoP, you receive 80-100% of your salary during illness (first 33 days from the employer, then ZUS sickness benefit). On B2B, if you pay the voluntary sickness contribution, you are entitled to sickness benefit — but it is calculated from the declared base (with preferential ZUS, this amounts to just a few dozen zloty per day). With full ZUS, the benefit is higher but still far below your invoice amount.
Notice Period and Protection
The Labour Code protects employees: dismissal requires cause, notice periods apply (up to 3 months), and special protections exist (pregnancy, pre-retirement age). On B2B, termination conditions depend on the contract — typically 1-3 months' notice, but the client does not need to give a reason.
Severance and Benefits
On employment, you are entitled to: severance pay in mass layoffs (up to 3 months' salary), compensation for unused leave, holiday allowance (in larger companies). On B2B — none of these, unless you negotiate them into the contract.
When Is Employment the Better Choice?
- Lower earnings (below 8,000-10,000 PLN gross) — at lower amounts, ZUS contributions on B2B eat into the tax advantage
- You need stability — protection from dismissal, paid leave, sick pay
- Planning a mortgage — banks prefer employment contracts
- You do not want to handle accounting — on employment, the employer does everything
- High-risk industry — limited employee liability
When Is B2B the Better Choice?
- High earnings (above 12,000-15,000 PLN gross) — the more you earn, the bigger the B2B advantage
- You have real deductible costs — equipment, office, car, training
- You value flexibility — working for multiple clients, your own hours
- It is the industry standard — in IT, consulting, and marketing, B2B is the norm
- You want to deduct VAT — e.g., when purchasing expensive equipment
B2B Risks — What to Watch For
Sham Self-Employment
If your B2B arrangement resembles an employment relationship (fixed hours, single workplace, subordination, no substitution allowed), ZUS or the Labour Inspectorate can reclassify it as employment — with back-contributions and interest. Make sure your contract and working practice do not mirror employment features.
Income Gaps
On B2B, you have no guaranteed work. The period between contracts means zero income (unless you have a financial cushion).
Full Liability
As an entrepreneur, you are liable for damages with your entire personal assets. Professional liability insurance is worth considering.
Summary — How to Decide
There is no one-size-fits-all answer. The key questions are:
- How much do you earn? — below 10,000 PLN gross, employment is usually better; above 15,000 PLN, B2B gives a clear advantage
- How important is stability? — if very, employment is safer
- Do you have deductible costs? — if yes, B2B brings additional benefits
- Are you planning major investments (mortgage, property)? — employment is more readily accepted by banks
Calculate your exact situation using the UoP vs B2B calculator and consult a tax adviser. The LinTax Wroclaw accounting firm can help you not only choose the optimal form but also guide you through setting up a business and selecting a tax regime. Also read the articles What is PIT? and What is ZUS? to better understand the individual cost components.