Do you pay ZUS on B2B? Direct answer

Yes, you must pay ZUS contributions on B2B. This is mandatory for anyone running sole proprietorship (JDG) or another business form.

B2B stands for business-to-business collaboration. If you work as sole proprietor or run own business, you are responsible for your own ZUS contributions. This is different from salaried employment where employer pays part of ZUS.

Who must pay ZUS on B2B?

ZUS insurance obligation applies to:

• People running sole proprietorship (JDG)
• Partners of civil law partnerships
• Members of cooperative societies
• People working for own account not registered as employees

Consequences of not paying ZUS

Not paying ZUS contributions has serious consequences:

• Interest and penalties imposed by ZUS on arrears
• Bailiff enforcement of personal property
• Loss of benefits rights (allowances, disability, pension)
• Difficulty obtaining credit—no insurance is negative signal for banks
• Professional registration problems and business opportunities

ZUS contribution amounts for B2B in 2026

In 2026, ZUS contributions for entrepreneur are:

Full contributions (with sickness insurance)

Contributions without sickness insurance

Health insurance separately

Additionally, entrepreneur pays health insurance:

• Minimum PLN 432.54 monthly (from minimum wage)
• Actual amount depends on tax form and income

Reliefs and preferential ZUS forms for B2B

Fortunately, law provides several reliefs that can significantly reduce ZUS costs for new or lower-earning entrepreneurs.

Start relief—6 months without ZUS

If starting new business, can use Start relief allowing ZUS exemption for 6 months.

Start relief conditions:

• New business registration (didn't exist before)
• Apply to ZUS within 30 days of CEIDG registration
• Person wasn't entrepreneur for last 5 years (with exceptions)

Start relief savings:

Over 6 months you save approximately PLN 14,000–14,400 on ZUS contributions. Significant cost reduction at business launch.

Small ZUS Plus—contributions based on income

If earning below specified threshold (120% of minimum wage), can choose Small ZUS Plus. Contributions then calculated from individually set base, depending on previous year income.

How it works:

Instead of paying full ~PLN 1,900 contributions, can pay PLN 300–400 monthly if income is low. In 2026, Small ZUS Plus threshold is approximately PLN 5,760 monthly (120% of minimum wage).

When Small ZUS Plus pays off:

• When net revenue below PLN 5,760/month
• When starting or seasonal business
• When combining B2B with salary work (total below threshold)

Preferential ZUS—for newly registered

Entrepreneurs registering by year-end can use preferential ZUS with base of 30% minimum wage (in 2026: ~PLN 1,442).

Enables paying much lower contributions in initial business years.

Practical step-by-step for B2B entrepreneur

Step 1: Register business in CEIDG

To start B2B work, register in Central Business Activity Register. Can do online at:

• CEIDG.gov.pl (free)
• County office
• Business information point

Step 2: Register with ZUS within 7 days

After CEIDG registration, register with ZUS within 7 business days via:

• ZUS office visit
• ZUS.pl portal with e-signature
• mZUS mobile app

Step 3: Check relief eligibility

When registering with ZUS, request reliefs:

• Start relief—if new business (apply within 30 days)
• Small ZUS Plus—if earning below threshold
• Sickness insurance—optional, can decline

Step 4: Set up regular contribution payments

After 6-month relief (if received) or immediately, must pay ZUS by 10th of next month. Set up automatic transfers:

• To ZUS account provided in welcome letter
• Via mZUS app
• Through bank online

Step 5: Maintain income records

To qualify for Small ZUS Plus in future years, document income from previous year:

• Invoices issued to clients
• Income register (KPiR or accounting statements)
• Service/contract documentation with dates and amounts

Comparison: B2B with reliefs vs. full ZUS

FAQ: Common questions

Is B2B same as sole proprietorship?

Not exactly. B2B is collaboration form (business-to-business), JDG is legal form. Person working B2B usually runs JDG, but can own company (Sp. z o.o., partnership).

Must I issue invoices on B2B?

Yes, if VAT taxpayer. If VAT exempt (below PLN 240k revenue), can issue invoices without VAT, but must note "VAT exempt".

What if I don't pay ZUS?

ZUS will enforce arrears, charge interest and penalties. Risk loss of benefits, credit denial, and professional registration problems.

Can I do B2B and salary work?

Yes, but you'll pay two contribution groups: as employee (from salary) and entrepreneur (from B2B). Total tax burden can be high.

Are ZUS contributions deductible from income tax?

Partially yes. Sickness and accident insurance contributions may be deductible. Full deduction depends on chosen tax form (KPiR, flat-rate, linear).

Can family members be on B2B?

Theoretically yes, but only if actually working and earning. ZUS can verify whether contracts are real. Fake contracts may result in penalties.