Knowledge base · 04.10.2026 · 2 min read

PIT-37 for employees: how to get a tax refund in Poland

Who files an annual PIT, which reliefs are most often forgotten and why Twój e-PIT does not always calculate in your favour.

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If you work under an employment contract or an umowa zlecenie, your employer withholds tax in advance during the year. Once a year, from 15 February to 30 April, you need to file a PIT-37 return. For many people this is a chance to get some of the money back.

What is most often forgotten

  • Child relief. It reduces the tax; if there is not enough tax, the difference can be received in cash up to the amount of contributions paid.
  • Joint return with a spouse. It pays off when incomes differ a lot.
  • Ulga dla młodych. Income up to the age of 26 within the limit is exempt from tax.
  • Several employers. All PIT-11 forms must be included in the return.

What about Twój e-PIT?

The tax office fills in the return itself in the Twój e-PIT service based on data from employers. If you do nothing, it is deemed filed on 30 April. However, the service takes child relief and joint filing into account only based on what you declared before, so the return is worth checking.

When the money arrives

For returns filed electronically, the tax office usually refunds an overpayment within 45 days to the account you provide.

We will prepare and file your PIT for you: annual PIT for employees.

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