Many foreigners living and working in Poland possess a PESEL number. It serves for identification and is useful in many everyday situations – from visiting a doctor to handling official matters. Naturally, the question arises: does the mere fact of having a PESEL number mean I have to settle my Personal Income Tax (PIT) in Poland? What is the relationship between PESEL and a foreigner’s tax obligations? We explain.

What is a PESEL number and when does a foreigner receive it?

The PESEL number is an 11-digit unique identification number assigned to each individual registered in the Universal Electronic System for Registration of the Population. Foreigners can obtain it in several situations, most commonly:

  • When registering for permanent or temporary residence lasting over 30 days.
  • Upon request, if required by specific regulations (e.g., for ZUS social security, NFZ health insurance, setting up a Trusted Profile ePUAP, or specifically for tax purposes if they do not run a business).
  • Automatically, under special laws – as in the case of Ukrainian citizens who arrived after Feb 24, 2022, and obtained UKR status (so-called PESEL UKR).

PESEL itself is primarily an identification tool.

PESEL and tax obligation – Are they the same?

The key principle is: possessing a PESEL number itself does NOT create a tax obligation in Poland nor does it determine the necessity of filing an annual PIT return.

Tax obligations arise from completely different premises, mainly related to the place of residence for tax purposes (tax residency) and the source of income earned.

What determines tax obligation in Poland?

  • Unlimited tax liability (tax residency): Applies to individuals who are Polish tax residents. Such a person pays tax in Poland on their entire worldwide income (subject to double taxation treaties). Resident status is acquired if:
    • One has a center of personal or economic interests (center of vital interests) in Poland, OR
    • One stays in the territory of Poland for more than 183 days in a given tax year.
  • Limited tax liability (non-residents): Applies to individuals who are not Polish tax residents. Such a person pays tax in Poland only on income earned in the territory of Poland.

Having a PESEL number may, but does not have to, coincide with tax resident status. One can have PESEL and not be a resident (e.g., working short-term) or be a resident and only then apply for PESEL.

When must a foreigner file a PIT return in Poland?

The obligation to file an annual PIT tax return (most often PIT-37 or PIT-36) arises when:

  • You earned income in Poland subject to taxation under general rules (e.g., from an employment contract, mandate contract, contract for specific work, rental, business activity).
  • You are a tax resident of Poland: You must declare all your income (Polish and foreign – applying appropriate double taxation avoidance methods) in your Polish tax return.
  • You are a non-resident: You must declare only the income earned in Poland in your Polish tax return.

An important source of information is the PIT-11 document, which you should receive from your employer or contractor (payer) by the end of February for the previous year. It contains information about your income and withheld tax advances. Even if the tax was fully withheld by the payer, there is often still an obligation to file an annual return.

How does PESEL help with PIT settlement?

Although PESEL does not create a tax obligation, it is extremely helpful in the settlement process itself:

  • Tax Identifier: For foreigners who do not run a business nor are registered VAT taxpayers, the PESEL number is the primary tax identifier used in PIT forms. It is entered in the appropriate box on the form.
  • Access to Online Services (Twój e-PIT): Having a PESEL number and a Trusted Profile (which often requires PESEL to set up) allows logging into the Twój e-PIT service on the podatki.gov.pl portal. There, a pre-filled tax return is often available, which just needs to be checked, possibly supplemented (e.g., with deductions), and accepted. This is a significant convenience.
  • Easier Communication with the Tax Office: Using the PESEL number facilitates identification in contacts with the tax office.

What if I need to file PIT but don’t have PESEL? The NIP number

What if a foreigner earned income in Poland subject to settlement (e.g., from a short-term mandate contract) but did not manage to or had no grounds to obtain a PESEL number?

In such a case, their tax identifier will be NIP (Numer Identyfikacji Podatkowej – Tax Identification Number).

  • Who must have NIP? Mandatory for foreigners running a business in Poland or registered as VAT taxpayers. But also applicable to those who do not have PESEL but are subject to tax obligation in Poland.
  • How to get NIP? An application must be submitted to the relevant tax office using the NIP-7 form. The office will assign a NIP number, which should then be used in PIT returns.

PESEL UKR and PIT settlement – are there special rules?

For citizens of Ukraine who received PESEL with UKR status under the Special Act:

  • PESEL UKR functions like a standard PESEL number as a tax identifier in PIT returns (if they don’t have NIP due to business/VAT).
  • The rules for determining tax obligation and residency are the same as for other foreigners. Having UKR status does not automatically determine Polish tax residency – the 183-day test or the center of vital interests test decides. Many Ukrainians, staying in Poland for over 183 days a year, become Polish tax residents.
  • They can also use the Twój e-PIT service by logging in with their data and PESEL UKR number.

Summary of foreigner’s obligations

  1. Determine your tax residency status in Poland (center of vital interests / 183-day test).
  2. Check if the income earned in Poland is subject to the obligation to file a PIT return. (The PIT-11 from the payer will be helpful).
  3. If yes – file the tax return (e.g., PIT-37, PIT-36) with the competent tax office by the statutory deadline (usually by April 30th of the year following the tax year).
  4. Use the correct tax identifier in the return:
    • PESEL – if you have one and do not run a business/are not a VAT taxpayer.
    • NIP – if you run a business, are a VAT taxpayer, or do not have a PESEL number.
  5. Pay any tax due resulting from the return by the April 30th deadline.

Need help with your PIT settlement?

Issues of tax residency, application of double taxation treaties, or using tax reliefs can be complex. Having a PESEL number facilitates the technical aspects of settlement but does not exempt you from the obligation to correctly determine your tax liabilities.

If you have doubts about your tax status, the obligation to file PIT, or correctly filling out the return, it is worth:

  • Using information from the official tax portal: podatki.gov.pl.
  • Seeking help from a tax advisor, who will professionally assess your situation.
  • Consulting our law firm – we can help clarify your tax obligations arising from your residence status and income sources and direct you to appropriate tax specialists.

Remember that the PESEL number is an important identifier facilitating life in Poland, but your tax obligations depend on your income situation and residency status, not on the mere fact of having PESEL. Fulfilling your tax obligations on time will help avoid unpleasant consequences.

(Information contained in this article is general in nature and does not constitute tax or legal advice. Tax regulations are complex and may change. Always consult your individual situation with a licensed tax advisor or check information from official sources.)

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