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Poland Cross-Border Taxation Guide (Międzynarodowe Opodatkowanie)

Poland imposes unlimited tax liability (nieograniczony obowiązek podatkowy) on residents — taxed on worldwide income. Non-residents face limited tax liability — taxed only on Polish-source income. Poland has an extensive Double Taxation Agreement (DTA) network covering 90+ countries, providing relief through the foreign tax credit or exemption method. All amounts in PLN.

Cross-border taxation rules follow the OECD Model Tax Convention. The key concepts are tax residency, the 183-day rule, and the centre of vital interests. For related guidance, see our Tax Residency Guide → and Tax Filing Guide →.

Tax Residency Concepts

  • Residents (rezydenci podatkowi): Individuals who have their centre of personal or economic interests (ośrodek interesów życiowych) in Poland or who stay in Poland for more than 183 days in a tax year. Residents are taxed on worldwide income (unlimited tax liability).
  • Non-residents (nierezydenci): Individuals who do not meet the residency criteria. Taxed only on Polish-source income (limited tax liability), e.g., employment performed in Poland, business profits from a Polish PE, rental income from Polish property.
  • Polish-source income includes: employment exercised in Poland, pensions paid from Polish institutions, interest and royalties from Polish sources, income from real estate located in Poland, capital gains on Polish assets.

The 183-Day Rule

  • Under most DTAs, an employee who works in Poland for less than 183 days in any 12-month period retains taxing rights in their home country, provided the employer is not a Polish resident and the costs are not borne by a Polish PE.
  • The 183-day count includes any day of physical presence (partial days count). This applies to arrival days, departure days, weekends, holidays, and sick days spent in Poland.
  • If the 183-day threshold is exceeded, Poland (as the source country) may tax the employment income derived from work performed in Poland, unless the DTA specifies otherwise.

Centre of Personal and Economic Interests

  • The centre of vital interests (ośrodek interesów życiowych) determines tax residency when an individual has close ties to multiple countries.
  • Personal interests: Where your spouse, children, and immediate family live; where you own and occupy a home; where your social, cultural, and political ties are strongest.
  • Economic interests: Where your main source of income is located; where your bank accounts, investments, and business activities are based; where you hold professional licences or memberships.
  • Polish tax authorities give significant weight to the location of the taxpayer's habitual abode (miejsce zamieszkania) and the family's place of residence.

Double Taxation Agreement (DTA) Network

  • Poland has signed over 90 comprehensive DTAs based on the OECD and UN Model Conventions. Key partners include all EU member states, the US, UK, Canada, Australia, Japan, China, South Korea, India, Switzerland, Norway, and Ukraine.
  • Most DTAs allocate taxing rights between the source country and the residence country, using either the exemption method (income exempt in Poland) or the credit method (foreign tax credited against Polish tax).
  • Poland generally uses the progressive exemption (metoda wyłączenia z progresją) for most EU/EEA DTAs — foreign income is exempt from Polish tax but included to determine the applicable tax rate on remaining Polish income.
  • For countries outside the EEA, Poland predominantly uses the foreign tax credit (metoda proporcjonalnego odliczenia) — Polish tax is reduced by the tax paid abroad, capped at the proportion of Polish tax attributable to foreign income.

Foreign Tax Credit (FTC)

  • Polish residents who pay foreign tax on foreign-source income can claim a foreign tax credit on their Polish PIT return (PIT-36 or PIT-37).
  • The credit is limited to the proportion of Polish tax that the foreign income bears to total income. Excess foreign tax cannot be carried forward or refunded.
  • Documentation: You must hold a certificate of residence (certyfikat rezydencji) from the foreign tax authority and evidence of foreign tax paid.

Polish Residents — Worldwide Income

  • Polish tax residents must report and pay Polish tax on all income earned anywhere in the world, subject to DTA relief.
  • This includes foreign employment, foreign business income, foreign rental income, foreign dividends, foreign interest, and foreign capital gains.
  • Failure to declare foreign income can result in penalties, interest, and potential criminal tax proceedings.
  • Polish residents moving abroad must notify the tax office and may be subject to exit taxation on unrealised capital gains on certain assets.