B2B contract vs employment contract (UoP) in Poland in 2026 – what pays off in IT

B2B vs UoP in Poland – the short answer

In Poland in 2026, choosing between a B2B contract and an employment contract (umowa o pracę, UoP) is mainly a trade-off between more money now and legal protection. On B2B you invoice a client from your own sole proprietorship (jednoosobowa działalność gospodarcza) and pay lump-sum social contributions and a business tax, which usually leaves more net income for the same rate. On UoP you get paid leave, sick pay, a notice period, the minimum wage guarantee and pension contributions on your full salary.

Figures below are for 2026 and come from ZUS, biznes.gov.pl and podatki.gov.pl. This guide is informational and is not tax advice.

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Side-by-side comparison

Net pay for the same amount

We calculated the average monthly take-home pay in 2026 for 15,000 PLN: gross on an employment contract and net (excluding VAT) on a B2B invoice.

Assumptions: on UoP – standard 250 PLN monthly costs, PIT-2 filed, no PPK, no 50% author's costs, 32% bracket applied over the year. On B2B – full ZUS with sickness insurance (1,926.76 PLN), 2026 health contribution rules, contribution deductions as allowed by law, no other business costs and no accounting fees. In the last case you issue no invoice for one month (holiday, illness, gap between projects) but keep paying ZUS. With the same assumptions at 10,000 PLN, UoP leaves about 7,147 PLN and B2B on the lump-sum about 6,307 PLN – so B2B is not automatically better.

Employment contract: how pay is taxed

From the gross salary the employee pays social contributions (pension 9.76%, disability 1.5%, sickness 2.45%), the 9% health contribution and income tax on the progressive scale – 12% up to 120,000 PLN of annual income and 32% above, with a 30,000 PLN tax-free amount. Developers whose work is a copyrighted creation can have 50% author's costs applied to part of their salary, within an annual cap. People under 26 do not pay PIT on employment and mandate-contract income up to 85,528 PLN a year.

The employer adds its own contributions on top, so the total cost of a job is higher than the gross salary in your contract – the main reason companies offer higher B2B rates.

B2B: ZUS and health contribution in 2026

Health contribution: on the tax scale 9% of income, on the flat tax 4.9% of income – in both cases at least 432.54 PLN a month from February 2026. On the lump-sum tax it is fixed by annual revenue: 498.35 PLN (up to 60,000 PLN), 830.58 PLN (60,000–300,000 PLN) or 1,495.04 PLN (above 300,000 PLN).

B2B: which tax form

• Lump-sum tax (ryczałt) 12% on revenue for software-related services – creating, modifying, testing and developing software. Some IT services not related to software may qualify for 8.5%, but 2026 rulings for the same PKWiU code went both ways, so describe your services precisely.
• Flat tax 19% on income (revenue minus costs), no tax-free amount and no 32% bracket, but the 4% solidarity levy applies to income above 1 million PLN a year; health contributions deductible up to 14,100 PLN in 2026.
• Progressive scale 12% / 32% with the 30,000 PLN tax-free amount – often best for lower income or the first year.
• IP Box 5% on income from qualifying IP, including copyright to software you create or improve within R&D activity. It works with the scale or flat tax, not the lump-sum, and requires ongoing separate records – rulings have refused the relief to people who prepared records after the fact.

You cannot use the lump-sum or flat tax if you provide your former or current employer with the same work you did as their employee in the current or previous tax year.

VAT: most IT services for Polish companies carry 23% VAT; the small business exemption limit is 240,000 PLN in 2026, but advisory services cannot use it. Invoices are issued in the national e-invoicing system KSeF: mandatory since 1 February 2026 for the largest taxpayers and since 1 April 2026 for everyone else; until the end of 2026 businesses invoicing up to 10,000 PLN gross a month may still issue invoices outside KSeF, and penalties apply from 1 January 2027 – check the details for your business with your accountant.

The "disguised employment" risk

The Labour Code states that work performed under the conditions of an employment relationship is employment, whatever the contract is called. Since 8 July 2026 an amendment to the Labour Inspectorate Act (Journal of Laws 2026 item 473) lets the district labour inspector issue a decision confirming an employment relationship if the company ignores an inspector's earlier order. The decision can be appealed to the labour court. Warning signs: fixed hours and place set by the client, reporting lines like a regular employee, a ban on other clients and no business risk on your side.

What may change in 2027

On 29 September 2026 the government sent to the Sejm a bill changing income tax from 2027 (print no. 3147). The Sejm passed it on 22 October 2026 and the Senate proposed amendments on 27 October. As passed by the Sejm, from 1 January 2027 it raises the first threshold from 120,000 to 130,000 PLN, adds a 24% rate for income between 130,000 and 150,000 PLN (32% above), raises the solidarity levy from 4% to 5%, and lowers the lump-sum tax revenue limit from 2 million to 250,000 euro, with 17% on revenue above 300,000 euro in a year. As of 28 October 2026 it still awaits the vote on the Senate amendments and the President's signature – check the final wording before choosing your form of taxation for 2027.

How to decide

Choose B2B if you have enough experience that the net difference covers unpaid leave and a reserve, and you are fine running a small business. Choose UoP if you are starting your career, are under 26, plan a mortgage or parental leave, or the difference shrinks after counting paid days off. Many ads on LITJobs show both rates – compare them in IT job offers and remote jobs, then plug the numbers into the salary calculator. Our career guides for DevOps engineers, data scientists and cybersecurity specialists show what these roles typically involve, and the guide on writing a CV for Poland helps you get to the offer stage.