Tax Treaty Relief in Poland

How many double-tax treaties does Poland have, and where are the official texts?

Poland has concluded approximately 90 bilateral double-taxation agreements (DTAs) -- one of the largest treaty networks in Central and Eastern Europe -- covering all 27 EU member states, the UK, USA, Canada, Australia, Japan, China, India, Switzerland, and dozens more [1]. All treaties in force are listed on the Ministry of Finance portal at podatki.gov.pl, which also publishes synthesised texts that show each treaty as modified by the MLI [1]. The synthesised texts are not themselves law -- the authentic treaty and the MLI text remain the only legal sources -- but they are the practical starting point for any treaty-relief analysis. Synthesised texts for many partners, including the UK, South Africa, Vietnam, Mexico, Bulgaria, and Serbia, are available as free PDFs [1].

Poland's treaty with Russia was terminated effective 1 January 2023 in response to the invasion of Ukraine. Polish residents receiving Russian-source income now fall back on domestic rules only, with no treaty-based relief available.

What did the MLI change, and which treaties switched from the exemption to the credit method?

Poland ratified the MLI on 23 January 2018 and it entered into force on 1 July 2018 [1]. Poland notified 78 covered tax agreements at signature. For those agreements where the partner jurisdiction also adopted the relevant MLI provisions, the method of eliminating double taxation switched from the exemption-with-progression method (metoda wyłączenia z progresją) to the proportional credit method (metoda proporcjonalnego odliczenia) [2].

The switch is material for Polish tax residents earning employment or pension income abroad. Under the old exemption method, foreign income was exempt from Polish tax (though it still pushed the marginal rate applied to other Polish income upward). Under the credit method, the foreign income is included in the Polish tax base and the foreign tax paid is deducted -- only up to the proportion of Polish tax attributable to that income. If the foreign state withholds less tax than Poland would charge (for example, because the foreign allowance or personal-exemption reduces the foreign tax to zero), the Polish resident owes the full difference to Poland.

Key effective dates for the method switch [2]:

• 1 January 2019: Austria, Slovenia
• 1 January 2020: United Kingdom, Ireland, Finland, Israel, Japan, Lithuania, New Zealand, Slovakia
• 1 January 2021: Norway, Canada, Denmark
• 1 January 2021: Belgium (already on credit method since 2019 under an earlier protocol revision)

The treaties with Germany, France, the Netherlands, Italy, and the United States were not switched to the credit method by the MLI and continue to use the exemption-with-progression method under their bilateral provisions [2].

What is the abolition relief (ulga abolicyjna), and what is the current cap?

The abolition relief (ulga abolicyjna) was introduced in 2008 to equalise the position of Polish residents whose foreign treaty uses the less-favourable credit method versus the exemption method [3]. It allowed a deduction equal to the difference between tax calculated under the credit method and tax that would have been due under the exemption method -- effectively eliminating the disadvantage of the credit method for most earners.

From the 2021 tax year, the relief was capped at PLN 1,360 per year [3]. That cap is unchanged through 2026. The cap applies to most categories of foreign-source income, including employment, self-employment, and management-contract income. The cap means only roughly the first PLN 8,000 of foreign income is equalised; amounts above that threshold bear the full credit-method disadvantage.

One exception survives: the cap does not apply to income earned outside the land territory of any state (principally seafarers on international waters and certain aviation professionals) [3]. Their abolition relief remains uncapped.

For Polish residents working in the UK, Ireland, Norway, or Canada -- all now on the credit method -- the practical result is that tax is owed in Poland on the portion of foreign earnings that exceeds what the foreign state withholds. Consulting a qualified tax professional is essential for anyone in this position, particularly where the foreign country's personal allowance reduces the effective foreign tax to below the Polish rate.

What are Poland's domestic withholding tax rates and key treaty reductions?

Domestic Polish withholding tax (podatek u zrodla, WHT) rates on payments to non-residents are [4]:

• Dividends: 19% (Article 22 CIT Act for legal entities; Article 30a PIT Act for individuals)
• Interest: 20% (Article 21 CIT Act)
• Royalties: 20% (Article 21 CIT Act)

Bilateral treaties reduce those rates. The table below shows indicative treaty rates for Poland's major partners; dual rates reflect different ownership-percentage thresholds or income types:

Sources: PwC Worldwide Tax Summaries (Poland, Corporate -- Withholding Taxes) [4]. Treaty rates are floor rates only; verify the exact article in the applicable DTA and any MLI modifications before relying on reduced rates.

The EU Parent-Subsidiary Directive (Council Directive 2011/96/EU) is transposed in Article 22(4) of the CIT Act and provides a 0% withholding rate on dividends paid to a qualifying EU or EEA parent that holds at least 10% of the Polish subsidiary's capital for an uninterrupted period of at least two years [4]. Poland maintains a two-year holding requirement, more stringent than the EU's one-year minimum. For Switzerland, the shareholding threshold is 25%.

The EU Interest and Royalties Directive (Council Directive 2003/49/EC) provides a 0% WHT exemption on interest and royalties between associated EU companies where one holds at least 25% of the other (or both are held 25% by a common EU parent) for at least two years, subject to beneficial-owner and substance conditions [4].

How does the PLN 2 million pay-and-refund mechanism work?

Since 2019, Polish law imposes a pay-and-refund (PAR) mechanism on passive-income payments exceeding PLN 2 million in a single calendar year to a single related recipient [5]. When the cumulative annual threshold is crossed, the Polish paying entity must withhold at the full domestic rate (19% or 20%) on each further payment in that year, even if a treaty or EU directive would otherwise reduce or eliminate the withholding. The foreign recipient (or the Polish payer where it bears the cost) must then apply for a refund to recover the excess.

The mechanism applies only to related-party payments of dividends, interest, and royalties -- not to arm's-length service fees or unrelated-party transactions [5].

Two procedural exits allow a payer to apply treaty rates at source without going through the refund route:

1. WHT preference opinion (opinia o stosowaniu preferencji): The payer obtains a binding confirmation from the tax authority that the reduced rate or exemption applies. Valid for 36 months from issue. This route carries no personal criminal liability for management.
2. Payer's statement (oswiadczenie platnika, WH-OSC form): The payer's management board submits a declaration to the Lublin Tax Office confirming it holds the required documentation. Valid through the end of the tax year. This route does expose management to criminal-tax-law liability if the statement is incorrect [5].

Refund applications are filed with the Head of the Lublin Tax Office. Processing typically takes six months from complete submission but can extend further where the authority requests additional evidence.

Certificate of residence (certyfikat rezydencji) for the recipient is a mandatory condition before any reduced rate or exemption is applied. Without a valid certificate, the payer must withhold at the full domestic rate regardless of the treaty [6]. The certificate is issued by Poland's Krajowa Administracja Skarbowa (KAS) to Polish-resident applicants on CFR-1 form (individuals) or equivalent entity request, with PLN 17 stamp duty. The Supreme Administrative Court (NSA) confirmed on 20 August 2025 that no other document -- however extensive -- can substitute for a valid certificate of residence when claiming a DTA reduced rate [6].

What reporting obligations arise from WHT payments -- IFT-1R and IFT-2R?

Every Polish entity that made payments to non-residents subject to WHT must file annual information returns, regardless of whether tax was actually withheld or an exemption applied [7]:

• IFT-1R covers payments to foreign individuals (PIT taxpayers). Deadline: end of February of the year following the year in which the income was earned.
• IFT-2R covers payments to foreign legal entities (CIT taxpayers). Deadline: end of March of the year following the year in which the income was earned.

Both forms are filed electronically via the e-Deklaracje portal using a qualified electronic signature. The IFT-2R version 12 applies to income earned from 1 January 2025 onwards (covering the 2025 filing filed by 31 March 2026), introducing a new supplementary section D for additional reporting on income types and flat-rate tax withheld [7].

The IFT forms are sent to the non-resident recipient as well, so they can use the stated amounts when preparing their home-country tax return. Failure to file or late filing is subject to fiscal-penal-code penalties.

For a broader view of how Poland structures personal income tax obligations see the Poland country overview. For complex treaty-claim situations -- particularly those involving the post-MLI credit-method switch in UK or Irish treaties, the PLN 2 million PAR mechanism, or multi-year refund applications -- consult a qualified tax professional with Polish international tax experience.