The legal framework
Poland runs a codified, self-contained transfer pricing regime. The operative rules sit in Chapter 1a of the Corporate Income Tax Act of 15 February 1992 (art. 11a–11t), with a near-identical set for individuals in Chapter 4b of the PIT Act (art. 23m–23zf). The text practitioners should be working from in 2026 is the consolidation published as Dz.U. 2026 poz. 554, which states the law as at 18 March 2026. Article 11c(1) requires related parties to set prices on the terms independent parties would have agreed; where the relationship produces different terms and the taxpayer therefore reports lower income or a larger loss, the authority determines income disregarding those terms (art. 11c(2)), assessing the actual course of the transaction and the parties' conduct rather than the contractual packaging (art. 11c(3)).
The recharacterisation power is where Polish practice departs most sharply from a narrow pricing exercise. Article 11c(4) permits the authority to disregard a controlled transaction entirely, or to substitute an appropriate transaction, where economically rational independent parties would not have entered into it or would have structured it differently in light of realistically available options. Article 11c(5) is the counterweight: that power cannot be invoked merely because the price is difficult for the authority to verify or because no comparable independent transactions exist.
Scope is broad. Significant influence arises at 25% of capital, of votes in decision-making bodies or of rights to profits, losses or assets, but also from an individual's practical ability to steer key business decisions, and from marriage or kinship to the second degree (art. 11a(2)). A company and its foreign permanent establishment are related parties, and art. 11a(4) deems relatedness where structures lack justified economic reasons, including circular ownership. The OECD Guidelines are not Polish law; they enter through art. 11j(1) and art. 11q(4), which oblige the Minister to draft the implementing regulations with the Guidelines in view, and through consistent judicial reliance on them as interpretive authority. Poland has no secondary adjustment; the sanction sits in the additional tax liability instead.
Methods, comparables and benchmarking
Article 11d(1) requires the most appropriate method in the circumstances, chosen from the five OECD methods, with art. 11d(2) allowing another approach — expressly including valuation techniques — where none of the five can be applied. There is no hierarchy. The provision most often overlooked is art. 11d(4): the authority must apply the method the taxpayer adopted unless a different method is more appropriate. That is a burden-shifting argument worth making at the opening of an audit rather than at appeal.
The mechanics of comparability come from the Minister of Finance regulation of 21 December 2018 (Dz.U. 2018 poz. 2491). Paragraph 3 lists the comparability criteria; paragraph 4 prescribes a nine-stage study running from definition of the period examined through internal comparables, source identification, method and ratio selection, comparability adjustments and interpretation of results. Paragraph 6(2) requires external comparisons to use publicly available data, which is why secret comparables have no role in Polish assessments.
Neither the statute nor the regulation mandates the interquartile range. It survives as the practical default, and the TPR form has quietly made the choice a disclosure item: taxpayers select a range type from four codes (interquartile, full range, other range, single value), report the bounds and the achieved result, and flag whether comparability adjustments shifted the outcome by less than 30% or by 30% or more. The same form requires the principal geographic search criterion, from Poland through region, Europe, world and other. Polish law does not require Polish comparables, but a Europe-wide set on a Polish routine distributor is now a visible, self-declared risk marker. Analyses must be refreshed at least every three years, or earlier where the economic environment changes materially (art. 11r). For hard-to-value intangibles, paragraph 7 of the 2018 regulation bars hindsight, and paragraph 8 lifts that bar where forecast and outcome diverge by at least 20% of the forecast-based price.
Documentation: what KAS expects
Documentation is triggered per homogeneous controlled transaction: PLN 10m for goods, PLN 10m for financial transactions, PLN 2m for services and PLN 2m for anything else (art. 11k(2)). Thresholds are tested separately for the cost and the revenue side (art. 11k(3)) and irrespective of how many invoices or counterparties are involved (art. 11k(4)), and art. 11l fixes the measurement base — principal for loans, nominal value for bonds, the guaranteed sum for guarantees, net of recoverable VAT (art. 11l(2a)). Transactions with tax haven counterparties fall to PLN 2.5m for financial and PLN 0.5m for other dealings, and art. 11o reaches transactions that are not controlled transactions at all; those files need an economic justification, expressly including expected tax benefits.
The local file must describe the entity, describe the transaction with a functional analysis of functions, assets and risks, contain a benchmarking analysis — or a compliance analysis where benchmarking is inappropriate to the method or not possible with due diligence — and set out financial information (art. 11q(1)). Micro and small enterprises are relieved of both analyses (art. 11q(3a)). The master file is due where the group prepares consolidated accounts and exceeded PLN 200m consolidated revenue; it may be in English, subject to a 30-day translation demand (art. 11p).
The calendar is staged and often misstated in commentary: local file by the end of the tenth month, TPR by the end of the eleventh, master file by the end of the twelfth. For calendar-year 2025 that means 2 November, 30 November and 31 December 2026 — the tenth-month date falls on Saturday 31 October, followed by a Sunday public holiday, so art. 12 §5 of the Tax Ordinance moves it to the following Monday. The TPR — now TPR-C(6) and TPR-P(6) — carries the signed representation that the file is accurate and the prices arm's length (art. 11t(2)(7)), and it must be signed by the head of the unit or a designated board member, not by an ordinary proxy. Article 11n exemptions relieve documentation but rarely reporting: exempt transactions still appear in the TPR in reduced form (art. 11t(1) pkt 2, with the content cut down by art. 11t(4)). On demand, an existing file must be produced in 14 days; a targeted file can be ordered in 30 (art. 11s).
Audits, penalties and the enforcement climate
Poland pairs ordinary tax arrears with a dedicated administrative penalty. Where a decision applies the arm's length rules, the authority must simultaneously impose an additional tax liability of 10% of the understated income or overstated loss (art. 58a and 58b of the Tax Ordinance). That rate doubles to 20% where the base exceeds PLN 15m, as to the excess; where a comparable final decision was served within the previous 10 years; or where the taxpayer failed to produce transfer pricing documentation, as to the undocumented part. Grounds one and three together produce 30% (art. 58c). Incomplete documentation can be cured within a period of up to 14 days set by the authority, which is the single most valuable procedural lifeline in the regime.
Fiscal penal liability runs in parallel and lands on individuals. Article 56c of the Fiscal Penal Code punishes a missing local file, an unattached master file or documentation inconsistent with the facts by up to 720 daily rates, and late preparation by up to 240; art. 80e mirrors this for the TPR. With the 2026 minimum wage at PLN 4,806 the daily rate spans PLN 160.20 to PLN 64,080. Courts calibrate to means, so the arithmetic maximum is not a realistic forecast, but the exposure is personal. CbC failures carry a separate administrative fine of up to PLN 1m.
The enforcement pattern has changed shape. Audit volumes fell from 365 in 2023 to 271 in 2024 and 236 in 2025, while the share ending in an income increase rose to 63% and additional income assessed reached PLN 875.7m. Customs-fiscal offices account for roughly 97% of the understated income identified, averaging PLN 6.54m per effective audit against PLN 1.72m at ordinary tax offices. Cases are increasingly opened on industry, business-model and functional-profile analysis, with the benchmark examined only afterwards — which is why litigated disputes now turn on recharacterisation, transaction homogeneity and the reach of safe harbours rather than on quartile arithmetic.
Dispute resolution and advance certainty
Poland's advance pricing arrangement programme is among the busier in the region and has just passed twenty years. APAs are issued by the Szef KAS under the Act of 16 October 2019 on dispute resolution and advance pricing arrangements. Unilateral, bilateral and multilateral arrangements are available, with instructional deadlines of six, twelve and eighteen months (art. 97) that are routinely exceeded — 201 proceedings were pending at the end of 2025. Fees are 1% of the covered transaction value, floored and capped at PLN 5,000–50,000 for domestic unilaterals, PLN 20,000–100,000 for foreign unilaterals and PLN 50,000–200,000 for bilaterals and multilaterals.
Cover runs for up to five tax years and can reach back only to the start of the tax year in which the application was filed; there is no rollback into closed years, which argues for filing early rather than after an audit letter arrives. In 2025 the Szef KAS received 49 applications and concluded 31 arrangements, 25 unilateral and 6 bilateral. Across 2018–2025 the method distribution was heavily TNMM (271 decisions against 48 CUP), and every bilateral has been agreed with a European counterpart, most often Denmark, Germany and Switzerland. The commercial value is concrete: for the covered period no liability may be determined to the extent income follows the agreement (art. 11c(6) CIT), and covered transactions drop out of the local file obligation (art. 11n(2)). An annual implementation report is the price of admission.
For resolving disputes after the fact, three MAP routes coexist — the EU dispute resolution procedure, the Arbitration Convention and treaty MAP — each with a three-year filing window from first notification, with the Minister of Finance as competent authority. Domestically, there is one appeal instance, lodged within 14 days, before the provincial and supreme administrative courts. Court proceedings can be stayed while a cross-border procedure runs, which is worth coordinating deliberately rather than letting the two tracks collide.
Pillar Two, Amount B and what changes in 2026
The global minimum tax arrived through the Act of 6 November 2024 (Dz.U. 2024 poz. 1685), in force from 1 January 2025 with an election to apply the rules retroactively from 1 January 2024. It implements the income inclusion rule, the undertaxed profits rule and a qualified domestic minimum top-up tax. For groups already inside the Polish net, the practical consequence is that transfer pricing outcomes now feed a second computation with its own data demands, and that a transfer pricing adjustment made for income tax purposes can move an effective tax rate.
Amount B is a sourced negative. There is no simplified and streamlined approach anywhere in Chapter 1a, in the ministerial regulations or in the TPR form, and Poland answered the OECD questionnaire in the negative — while confirming it will respect the outcome where a covered jurisdiction applies the approach. Polish distributors therefore remain tested on ordinary most-appropriate-method principles.
Public country-by-country reporting is now live: entities above PLN 3.5bn of revenue in each of the last two financial years must prepare, file and publish an income tax report for financial years beginning after 21 June 2024, keeping it on their website for five years.
The open item is the deregulation bill (project UDER107, Sejm print 2837), adopted by the Council of Ministers on 21 July 2026 and transmitted to the Sejm the following day, but not yet published in the Journal of Laws as at early August 2026. As transmitted it would allow the TPR to be signed under general Tax Ordinance rules, including by attorneys; abolish the arm's length statement outright rather than relocate it, repealing art. 11t(2)(7) and (2b) CIT and their PIT equivalents; exempt micro and small enterprises from reporting general financial indicators; and clarify transfer pricing adjustments for domestic entities. Two measures trailed in earlier drafts did not survive consultations: the statement is not being moved into the local file, and the Fiscal Penal Code amendments were dropped from the bill altogether, so no new offence for a defective local file is on the table. Draft content shifted materially between March and June 2026, so nothing should be built on it until the enacted text is available.
How practitioners should respond
Three habits separate files that survive a Polish audit from files that do not. First, decide homogeneity and functional profile before anything else. KAS now selects cases on business model and functional characterisation, so a file that opens with a crisp, evidenced account of what the Polish entity actually does — and that matches the group's own management reporting — closes off the recharacterisation argument in art. 11c(4) before it starts. Second, build the local file to be produced, not merely to exist. The 14-day demand under art. 11s(1) is short, the 30-day targeted file under art. 11s(2) is shorter, and the additional tax liability doubles where documentation is absent. Keep the appendices, source extracts and search strategies with the file.
Third, treat the TPR as a signed representation rather than a data return. The statement in art. 11t(2)(7) is made by a named individual with personal fiscal penal exposure, and the form now discloses range type, geographic criterion, tested party and comparability adjustment magnitude — every field a candidate risk flag. Where flows are routine and recurring, the safe harbours in art. 11f and art. 11g are underused: they are elective, they remove documentation, and for 2026 the loan margins are published and unchanged. Where flows are material, intangible-heavy or long-running, price the APA fee against a 10% to 30% additional liability and remember that cover cannot reach a closed year. Finally, diarise the three-year benchmark refresh and keep the 2026 deregulation bill under watch — if enacted, the liberalised TPR signature and the abolition of the arm's length statement will alter compliance mechanics as soon as they are published.
