You are returning to Poland but want to keep your job – your American employer agrees, "after all, you do everything on Zoom." Great, but now questions arise that HR in California cannot answer: who pays ZUS? How to settle PIT without a Polish payer? Employment, B2B contract, or Employer of Record? This guide covers all legal work models from Poland for a foreign company – with amounts for 2026 and two recent changes you need to know: from July 8, 2026, the PIP inspector can administratively reclassify a B2B contract to employment, and starting in 2026, mandatory KSeF will also include invoices issued to foreign clients.
Four Cooperation Models – Which to Choose
| Model | How It Works | For Whom |
|---|---|---|
| Employment with a Foreign Employer | Legal, but requires managing contributions and PIT advances on the Polish side (details below) | When the employer wants to maintain an employment relationship |
| Employer of Record (EOR) | A mediating company (Deel, Remote, etc.) formally employs you in Poland and "rents" you to your employer; cost about 599–699 USD/month in addition to salary | Simplest for the employer; full employee rights; EOR is not separately regulated in Polish law – operates as a legal market construct |
| B2B (own business) | You set up a sole proprietorship and invoice – the most popular and usually the most tax-efficient, but with the risk of reclassification (see below) | IT specialists, consultants, higher rates |
| Commission Agreement with a Foreign Company | Possible; contribution-wise works like employment (work in Poland = ZUS in Poland) | Occasional collaborations |
New Rule Changing the Game (from July 8, 2026): amendment to the PIP Act – passed in March, signed by the president on April 2, 2026 – allows the labor inspector to convert a B2B contract into an employment contract by administrative decision, without going to court (an appeal suspends execution). If your "contract" is in practice employment – rigid hours, full subordination, no economic risk, one client – the risk has just significantly increased. Ensure you have the characteristics of a genuine business: your own equipment, flexible hours, responsibility for results, and, if possible, more than one client.
ZUS: Who Pays Contributions When the Employer is Abroad
- Basic Principle: work performed in Poland is subject to Polish insurance – the employer's location does not matter. This is confirmed by the Polish-American social security agreement (in effect since March 1, 2009): employed on Polish territory is subject only to Polish regulations. The exception applies only to posted employees sent by an American company to Poland for a maximum of 5 years – a person employed remotely "on-site" does not fit this exception.
- Employer from the EU/EEA: a convenient mechanism under Article 21 of Regulation 987/2009 – an employer without a registered office in Poland can agree in writing with the employee that they pay contributions on their behalf (the employer finances their part in addition to salary); the employee registers with ZUS and submits settlement documents monthly.
- Employer from the USA: here the EU mechanism does not work automatically. Safe paths: registering the American company with ZUS as a foreign payer or obtaining an individual interpretation from ZUS (40 PLN, about 30 days) confirming the arrangements. Simply privately "agreeing to pay ZUS myself" may be insufficient – confirm your setup with ZUS before starting.
- B2B: simplest contribution-wise – a self-employed person residing in Poland is subject to ZUS in Poland like any entrepreneur (rates and exemptions – in the guide on own business after return and in ZUS contribution table 2026).
PIT Without a Payer: You Pay Advances Yourself
By the 20th of the following month
With income from foreign work without a Polish payer, you pay monthly PIT advances yourself (Article 44(1a) and (3a) of the PIT Act): from income, subtract employee costs and paid social contributions, applying 12% (you can voluntarily apply a higher rate). No monthly declarations are submitted – the former "PIT-53" no longer exists; you simply transfer the advance to your tax micro-account.
Currency Conversion
Income in USD/EUR is converted at the average NBP exchange rate from the last working day preceding the day of receipt (Article 11a). A currency account or Wise is legal and popular – however, it is advisable to maintain a regular Polish account for taxes and domestic payments.
Annual Settlement
PIT-36 by April 30. Good news for returnees: return relief (up to 85,528 PLN annual income for 4 years) also covers income from work and business – details in the guide on returning to Poland, and the issue of residency – in the guide on tax residency and PIT.
B2B in Numbers 2026
- Forms of Taxation: scale 12/32%, linear 19%, lump sum – for IT most often 12% (programming and related PKWiU), and 8.5% for IT services outside the catalog (testing, PM, analytics) – note, the tax office actively controls inflated classifications for 8.5%.
- Health Contribution after the Reform Vet (Polish Order rules unchanged): scale 9% of income, linear 4.9% of income – minimum 432.54 PLN/month (from February 2026); lump sum: thresholds depend on income, approximately 498 PLN (up to 60,000), about 830 PLN (60,000–300,000) and about 1495 PLN (above) – confirm exact amounts with ZUS, as industry publications provide varying values.
- IP Box 5% for qualified income from proprietary software – still available in 2026 (the tightening project has not been passed); key is the correct transfer of copyright in the contract and record keeping.
- KSeF – mandatory e-invoicing: from February 1, 2026, for the largest companies (sales over 200 million PLN), from April 1, 2026, for all others (smallest, up to 10,000 PLN invoices monthly – from 2027; financial penalties also only from 2027). Important for those working for foreign clients: you also issue invoices for clients from the USA in KSeF, and send the client a visualization (e.g., PDF with a QR code); currency invoices are allowed (VAT calculated at the NBP rate). Services for companies outside the EU are outside Polish VAT (place of service at the buyer – Article 28b), so you invoice without VAT.
Negotiations with the Employer: What to Take Care Of
Transitioning from an American employment to B2B, you lose the 401(k) with employer contributions, health insurance, paid leave, and sick leave – a practical rule of thumb is a rate of about 1.2–1.5× your former gross salary to cover ZUS, health insurance, accounting, and lack of benefits. In the contract, take care of: currency and payment terms (net 15/30), division of currency risk, a clause for the transfer of copyright (IP Box condition), notice period, liability limit, and governing law. Also, establish in writing the expected overlapping hours of time zones – working for the East Coast means Polish 3:00 PM–11:00 PM, for California even later.
Decision-Making Cheat Sheet: the employer insists on employment and does not want Polish administration → EOR (~600–700 USD/month). You are a specialist with a negotiable rate → B2B with a lump sum of 12% or linear + IP Box, ensuring real independence (PIP!). Employer from the EU → employment with the assumption of payer obligations (Article 21). Employer from the USA insists on employment without EOR → register the company as a foreign payer with ZUS + self-paid PIT advances – and preferably a written interpretation from ZUS.
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