Estonian CIT Rates and the Tax Base
Navigating the Architecture of Poland’s Corporate Lump-Sum Regime. When is the rate 10%, when 20% – and what, precisely, constitutes taxable income under the lump-sum?
Poland’s Estonian CIT – the lump-sum tax on corporate income (ryczałt od dochodów spółek) – represents far more than a mere deferral of the tax liability event. It effects a fundamental reconceptualization of the taxation logic: rather than imposing the corporate income tax at the moment income is earned, the regime defers taxation until profits leave the corporate vehicle. This elegantly simple principle, however, conceals a remarkably intricate architecture of tax bases – one in which, as the case law increasingly demonstrates, the most consequential pitfalls lie not in the taxation of dividend distributions, but in transactions that the legislature classifies as “hidden profits” (ukryte zyski) or “expenditures unrelated to business activity” (wydatki niezwiązane z działalnością gospodarczą).
The Two-Tier Rate Structure: 10% and 20%
The lump-sum regime prescribes two rates of corporate income tax, the application of which turns on the taxpayer’s status in a given tax year.
A rate of 10% of the tax base applies to small taxpayers – defined as entities whose gross sales revenue in the preceding year did not exceed the zloty equivalent of EUR 2 million – as well as to taxpayers commencing business activity. This rate, precisely half the standard CIT rate, when combined with the statutory mechanism permitting shareholders to offset the lump-sum paid by the company against their personal dividend withholding tax liability, yields an aggregate effective tax burden of approximately 18%, as compared with approximately 26.29% under the standard CIT-plus-dividend regime.
A rate of 20% of the tax base applies to all remaining taxpayers – that is, entities that have lost their small-taxpayer status and do not qualify as commencing taxpayers. Even at this higher rate, the combined burden (Estonian CIT at the corporate level plus personal income tax on the dividend) amounts to approximately 21% – still materially more favorable than under the general regime.
A critical caveat warrants emphasis: the applicable Estonian CIT rate is determined at the moment the tax obligation arises, not at the moment of actual disbursement. As the Voivodeship Administrative Court (Wojewódzki Sąd Administracyjny, hereinafter “VAC”) in Gdańsk confirmed in its judgment of 9 October 2024 (Case No. I SA/Gd 620/24), the date relevant for determining the proper rate in a dividend distribution is the date on which the shareholders’ resolution on the allocation of net financial results is adopted; neither the date of actual payment nor the fiscal year to which the distributed profits relate affects the rate determination. The VAC in Lublin reached an identical conclusion (judgment of 15 November 2023, Case No. I SA/Lu 390/23), holding explicitly that the timing of the actual profit distribution is immaterial to the applicable lump-sum rate.
The Tax Base: Six Categories of Taxable Income
The simplicity of the rate structure stands in marked contrast to the complexity of the Estonian CIT tax base. Article 28m of the Corporate Income Tax Act (ustawa o podatku dochodowym od osób prawnych, hereinafter “CIT Act”) delineates six distinct categories of income subject to the lump-sum, each governed by its own rules regarding the moment at which the tax obligation crystallizes.
Income from distributed profits (dochód z tytułu podzielonego zysku) represents the most intuitive category. It encompasses net profit generated during the lump-sum taxation period and allocated, by resolution on the distribution or coverage of the net financial result, for payment to shareholders. The tax base is established in the month the resolution is adopted. The provision applies mutatis mutandis to advance payments on account of anticipated dividends. It bears noting that the dividend participation exemption available under Article 22(4) of the CIT Act does not apply within the Estonian CIT regime – the two systems are entirely distinct.
Income from profits allocated to loss coverage (dochód z tytułu zysku przeznaczonego na pokrycie strat) captures net profit earmarked for the coverage of losses incurred prior to the lump-sum taxation period. The tax base crystallizes, analogously, in the month of the relevant resolution.
Income from hidden profits (dochód z tytułu ukrytych zysków) – the category that most frequently gives rise to tax litigation. The tax base is determined in the month the benefit is conferred or the payment made. This category is examined in detail below.
Income from expenditures unrelated to business activity (dochód z tytułu wydatków niezwiązanych z działalnością gospodarczą) – the second category generating substantial fiscal risk. The tax base crystallizes in the month the expenditure is incurred.
Income from changes in asset values (dochód z tytułu zmiany wartości składników majątku) arises in the month in which a merger, demerger, corporate transformation, or contribution in kind is effected. The taxable amount equals the excess of the fair market value of the acquired assets over their tax basis. The VAC in Szczecin (judgment of 16 October 2024, Case No. I SA/Sz 265/24) significantly narrowed the scope of this category, holding that where no fair market revaluation of assets is performed in the course of a merger or transformation – such that each asset retains in the acquiring entity’s books the same carrying value as before – no income from changes in asset values arises.
Income from accumulated net profits (dochód z tytułu zysku netto) constitutes a distinctive “exit” category. Upon a taxpayer’s departure from the lump-sum regime, the aggregate net profits earned in each year of the regime’s application become taxable, to the extent they were neither distributed nor allocated to loss coverage. The tax obligation arises in the year the lump-sum regime terminates.
Income from undisclosed business transactions (dochód z tytułu nieujawnionych operacji gospodarczych) encompasses revenues and costs that, under applicable accounting standards, ought to have been recognized in a given tax year and reflected in net profit (loss), but were not so reflected. The Supreme Administrative Court (Naczelny Sąd Administracyjny, hereinafter “SAC”) confirmed in its judgment of 9 July 2024 (Case No. II FSK 314/24) that an expenditure attributable to the lump-sum taxation period, if recorded in the accounting books in subsequent years, constitutes a tax base under this heading.
Hidden Profits: The Minefield of Estonian CIT
The statutory definition of hidden profits, set forth in Article 28m(3) of the CIT Act, encompasses monetary and non-monetary benefits, whether provided for consideration, gratuitously, or on partially gratuitous terms, that are conferred in connection with the right to participate in profits and that constitute something other than distributed profits, where the beneficiary – directly or indirectly – is a shareholder or a related party.
The illustrative catalogue of hidden profits is deliberately non-exhaustive. It includes, inter alia, loans extended to shareholders and related parties, the excess of the arm’s-length value of a transaction over its agreed price, gifts, entertainment expenditures, compensation paid from profits for share redemption, the equivalent of profits allocated to share capital increases, and benefits conferred upon a family foundation.
The Conjunctive Two-Prong Test – and a Competing Line of Authority
Recent case law has developed a discernible interpretive line holding that classification of a benefit as a hidden profit requires the conjunctive satisfaction of two conditions. The VAC in Gliwice (judgment of 18 November 2024, Case No. I SA/Gl 508/24) articulated the test as follows: first, the beneficiary of the consideration must be a shareholder or related party; second, the consideration must have been conferred in connection with the right to participate in profits. It follows that not every payment to a related entity constitutes a hidden profit – only those disbursements made in connection with the profit-participation right fall within the statutory ambit.
Of particular doctrinal significance is the VAC in Gliwice’s judgment of 6 June 2024 (Case No. I SA/Gl 1566/23), which emphasized that in reconstructing the legal norm from Article 28m(3), the interpreter must first attend to the clause preceding the words “in particular” (w szczególności) – namely, the requirement that the benefit be conferred in connection with the right to participate in profits – and only then proceed to analyze the specific categories enumerated in the catalogue. In other words, the dispositive inquiry is why the company conferred the benefit.
It must be acknowledged, however, that a competing line of authority – represented by the VAC in Warsaw (judgments of 22 October 2024, Case No. III SA/Wa 1904/24, and 25 June 2024, Case No. III SA/Wa 552/24) and the VAC in Poznań (judgment of 29 February 2024, Case No. I SA/Po 804/23) – holds that a benefit’s falling within any enumerated point of the Article 28m(3) catalogue constitutes a sufficient condition for its classification as a hidden profit, without the need for an independent inquiry into the nexus with the profit-participation right. This doctrinal divergence warrants resolution by the Supreme Administrative Court, and its practical ramifications – particularly as regards intra-group lending – are far-reaching.
Intra-Group Loans: Automaticity of Taxation?
Loans extended to shareholders and related parties represent the most frequently contested category of hidden profits under the Estonian CIT regime. The case law remains fractured, generating considerable uncertainty.
On one side of the divide, the SAC in its judgment of 9 October 2024 (Case No. II FSK 797/24) confirmed that the principal of a loan extended to a related party constitutes a hidden profit – without any inquiry into the nexus with the profit-participation right. The VAC in Warsaw (judgment of 8 October 2024, Case No. III SA/Wa 1792/24) added that the legislature introduced neither an arm’s-length criterion nor any other preconditions upon which the obligation to classify a loan as a hidden profit would depend.
On the other side, the VAC in Gliwice (judgment of 12 May 2023, Case No. I SA/Gl 93/23) held that nothing in the text of Article 28m(3) supports the proposition that every loan extended to a related party constitutes a hidden profit. Similarly, the VAC in Białystok (judgment of 29 October 2025, Case No. I SA/Bk 303/25) underscored the necessity of an additional inquiry into whether the loan was made in connection with the profit-participation right.
The temporal dimension, too, is significant. The VAC in Wrocław (judgment of 29 April 2024, Case No. I SA/Wr 963/23) persuasively observed that treating loans financed from funds accumulated prior to the entity’s entry into the Estonian CIT regime as hidden profits would, in substance, result in double taxation.
A notable asymmetry in the regulatory treatment merits attention. Where a shareholder extends a loan to the company, only interest, commissions, and fees – not the principal – are subject to taxation as hidden profits; the capital component is excluded by virtue of Article 28m(4)(3). Where, conversely, the company extends a loan to a shareholder, the entire principal is taxable, as confirmed by the VAC in Warsaw (judgment of 14 February 2024, Case No. III SA/Wa 2494/23). In the context of intra-group financing, alternative structures – including the conversion of debt into equity – warrant careful consideration.
Share Redemption: Is “Paid from Profits” a Sine Qua Non?
The payment of consideration for share redemption constitutes another fertile ground for controversy. Article 28m(3)(5) of the CIT Act refers to consideration “paid from profits” (wypłacone z zysku) in connection with the redemption of shares. The judiciary has developed two sharply divergent lines of authority on the interpretive significance of this qualification.
The first line – represented by, inter alia, the VAC in Kraków (judgment of 12 April 2024, Case No. I SA/Kr 217/24) – treats the phrase “paid from profits” as a conditio sine qua non: a hidden profit arises exclusively where the consideration is financed from retained earnings. Consideration for share redemption funded from the stated capital (shareholders’ contributions), rather than from profits, should not, under this reasoning, give rise to hidden profit taxation. This position was endorsed by the VAC in Kraków (judgment of 29 September 2023, Case No. I SA/Kr 593/23) and the VAC in Poznań (judgment of 26 November 2024, Case No. I SA/Po 552/24). The VAC in Kraków (judgment of 8 August 2025, Case No. I SA/Kr 397/25) went further still, holding that disbursements funded from profits generated prior to the taxpayer’s entry into the Estonian CIT regime do not constitute hidden profits.
The second, pro-fiscal line is represented by the VAC in Kraków (judgment of 19 November 2024, Case No. I SA/Kr 772/24), which held that any undistributed profits, irrespective of when earned, constitute a hidden profit if allocated as consideration for share redemption. This position was reinforced by the VAC in Gdańsk (judgment of 22 July 2025, Case No. I SA/Gd 211/25), which held that the source of financing for a share redemption is immaterial – the mere fact of distributing assets to shareholders is dispositive of hidden profit treatment. Resolution of this conflict by the SAC will be of critical importance for tax planning and succession structuring.
Shareholder Compensation: The Safe Harbor and Its Limits
The legislature has carved out a safe harbor excluding from hidden profit treatment compensation paid to shareholders under the categories enumerated in Article 12(1) and Article 13(7), (8), and (9) of the Personal Income Tax Act (ustawa o podatku dochodowym od osób fizycznych) – comprising employment contracts, management service agreements, and activities performed in a personal capacity – provided that the aggregate compensation paid in any given month does not exceed five times the average monthly remuneration paid by the taxpayer, subject to an absolute cap of five times the average monthly remuneration in the enterprise sector.
The VAC in Gliwice (judgment of 1 December 2025, Case No. I SA/Gl 524/25) articulated this rule with precision: any compensation exceeding five times the average monthly salary, or falling outside the enumerated categories, constitutes a hidden profit. Within the scope of the safe harbor, no further inquiry is required into whether the compensation bears a nexus to business activity or whether it is excessive. This principle carries significant implications for the structuring of employment arrangements under the Estonian CIT regime.
Passenger Vehicles: The 50% Presumption and the Evidentiary Burden
Mixed-use operation of company vehicles by shareholders – that is, for both business and personal purposes – triggers hidden profit recognition. Article 28m(4)(2)(b) excludes from hidden profits only 50% of the relevant expenditures and depreciation charges; the remaining 50% is subject to lump-sum taxation. Critically, the burden of proving that an asset is used exclusively for business purposes – and therefore generates no hidden profit whatsoever – rests with the taxpayer under Article 28m(5).
The SAC in its judgment of 15 October 2025 (Case No. II FSK 102/23) introduced an important distinction: where a vehicle is used for mixed purposes by a person other than a shareholder or an entity related to a shareholder – for example, by an employee – the associated expenditures may be classified neither as hidden profits nor as expenditures unrelated to business activity. This holding confirmed the SAC’s earlier position of 11 July 2023 (Case No. II FSK 93/23).
As a practical matter, the value of vehicle-related expenditures is computed on a gross basis – that is, inclusive of VAT – as confirmed by the VAC in Gdańsk (judgment of 21 February 2024, Case No. I SA/Gd 1054/23) and the VAC in Kraków (judgment of 29 September 2023, Case No. I SA/Kr 592/23).
Expenditures Unrelated to Business Activity: A Constitutional Infirmity?
The second high-risk category within the Estonian CIT tax base is income from expenditures unrelated to business activity, governed by Article 28m(1)(3). The legislature has provided neither a definition of this concept nor an illustrative catalogue – a conspicuous omission when contrasted with the detailed treatment of hidden profits.
The SAC squarely confronted this lacuna in its landmark judgment of 4 December 2025 (Case No. II FSK 308/23), holding that the complete absence of any statutory definition of “expenditures unrelated to business activity” renders this provision inconsistent with the constitutional requirement of determinacy in the delineation of the subject of taxation (określoność przedmiotu opodatkowania). Notably, the same judgment affirmed that the legislature had adequately defined the subject of taxation with respect to hidden profits – where the statutory definition includes both the identification of beneficiaries and an illustrative twelve-point catalogue, supplemented by the exclusions in paragraph 4. This ruling may carry far-reaching consequences for disputes with the tax authorities concerning this category.
The following classificatory principles have emerged from the case law:
An expenditure that qualifies as a deductible cost (koszt uzyskania przychodów) is, as a matter of law, always related to business activity. Not every non-deductible expenditure, however, is automatically “unrelated to business activity”; only an expenditure bearing no connection whatsoever to the taxpayer’s business warrants such classification (VAC in Wrocław, judgment of 7 June 2023, Case No. I SA/Wr 750/22).
The VAC in Warsaw (judgment of 16 January 2024, Case No. III SA/Wa 2398/23) emphatically rejected the tax authority’s position that entertainment expenditures are ipso facto unrelated to business activity. The court held that it is impermissible to argue that an expenditure must be “indispensable” – a requirement the legislature never imposed.
Interest on tax arrears occupies settled ground: courts uniformly classify it as unrelated to business activity by reason of its punitive character (VAC in Poznań, judgment of 6 March 2025, Case No. I SA/Po 738/24; VAC in Warsaw, judgment of 30 July 2024, Case No. III SA/Wa 1112/24).
Civil law damages require case-by-case analysis. The Director of the National Revenue Information Service (Dyrektor Krajowej Informacji Skarbowej) in his individual tax ruling of 5 November 2024 (No. 0111-KDIB2-1.4010.458.2024.2.AJ) held that compensation for the theft of goods in transit constitutes an expenditure related to the business activity of a transport company, irrespective of whether the loss was covered by insurance.
Contractual penalties and settlement payments – the VAC in Poznań (judgment of 19 November 2024, Case No. I SA/Po 560/24) held that expenditures arising from the termination of a contract, negotiated by way of settlement, may fall within the scope of ordinary business risk and serve to mitigate losses – and thus bear a sufficient nexus to business activity.
Lease of a stadium hospitality suite – the SAC in its judgment of 3 September 2024 (Case No. II FSK 650/24) held that it is improper to classify expenditures as unrelated to business activity solely on the basis of whether they would have been deductible under the general CIT regime. Where a hospitality suite is used exclusively for client meetings and employee training, the expenditure may properly be characterized as business-related.
Related-Party Transactions: When Lease Payments Do Not Constitute Hidden Profits
The leasing of real property from a shareholder for the operational purposes of a limited liability company is a pervasive business arrangement that raises substantial questions under the Estonian CIT regime. The case law has developed a pragmatic approach.
The VAC in Gorzów Wielkopolski (judgment of 7 December 2023, Case No. I SA/Go 276/23) held that leasing real property from a shareholder to serve as the company’s place of business is a commonplace and accepted commercial practice – provided the company is able to meet its real property needs from its own financial resources under the lease arrangement. The VAC in Warsaw concurred (judgment of 21 June 2023, Case No. III SA/Wa 470/23): where a lease transaction is conducted on arm’s-length terms, no hidden profit arises.
Courts do, however, consistently examine whether shareholders have adequately capitalized the company with the assets necessary for its operations. Where a shareholder deliberately transferred assets out of the company only to lease them back to the same entity, the arrangement constitutes a form of indirect recapitalization and is treated as a hidden profit (VAC in Gdańsk, judgment of 13 August 2024, Case No. I SA/Gd 394/24). This issue assumes heightened importance in the context of the family foundation–operating company relationship, where inter-entity asset transfers are prevalent.
Share Capital Increases: An Emerging Line of Authority
The allocation of profits to an increase in stated capital constitutes a hidden profit ex lege under Article 28m(3)(6) of the CIT Act. The VAC in Gdańsk (judgment of 20 January 2026, Case No. I SA/Gd 839/25) broadened the scope of this provision, holding that the circumstance that the capital increase was funded from reserves accumulated on the reserve capital – itself previously created from profits earmarked for that purpose – is immaterial. The statutory provision refers generally to income from hidden profits, including income allocated to share capital increases.
The VAC in Bydgoszcz (judgment of 5 March 2024, Case No. I SA/Bd 66/24) extended this logic to the simple joint-stock company (prosta spółka akcyjna), holding that the mandatory contribution to share capital required under Article 300^19^ of the Commercial Companies Code (Kodeks spółek handlowych) constitutes hidden profit income – the legislature drew no distinction between voluntary and mandatory transfers to share capital.
Practical Implications and Key Takeaways
The Estonian CIT remains a compelling instrument of tax planning, but its effective deployment demands meticulous management of intra-group transactions and an acute awareness of how expansively the courts construe the tax base. The following propositions distill the current state of the case law:
First, the rate-determining moment under the Estonian CIT is the date of the shareholders’ resolution on profit allocation, not the date of actual payment – a principle that opens meaningful planning opportunities through the deliberate sequencing of corporate resolutions.
Second, transactions with shareholders and related parties must be assessed against a conjunctive two-prong test – beneficiary status and nexus with the profit-participation right – though a competing line of authority treats the satisfaction of any individual point in the Article 28m(3) catalogue as sufficient. Mere relatedness does not, without more, establish hidden profit treatment.
Third, intra-group lending carries the highest risk profile. The predominant judicial approach treats such loans as hidden profits regardless of their arm’s-length character, though an emerging counter-current demands additional verification of the “profit-participation nexus” requirement.
Fourth, consideration for share redemption funded from capital contributions – rather than from profits – should not, under one line of authority, give rise to hidden profit taxation, although the competing view treats the source of funding as immaterial.
Fifth, expenditures unrelated to business activity represent a category burdened with constitutional risk following the SAC’s judgment of 4 December 2025 – the absence of a statutory definition may furnish a potent argument in disputes with the tax authorities.
The proper characterization of individual business transactions for purposes of the Estonian CIT tax base requires not merely command of substantive tax law, but above all sustained engagement with a dynamically evolving body of case law. The difference between a 10% and a 20% rate is a function of the taxpayer’s status; the difference between 0% and 20%, however, turns on whether a given transaction is characterized as taxable income under the lump-sum at all. Safeguarding the integrity of tax positions necessitates a tax audit calibrated to the specificities of the Estonian CIT regime and – for related-party transactions – a rigorous risk assessment in light of Poland’s general anti-avoidance rule.
Legal basis: Articles 28m, 28n, and 28o of the Act of 15 February 1992 on Corporate Income Tax (Journal of Laws 2025, item 278, consolidated text).
Robert Nogacki – licensed legal counsel (radca prawny, WA-9026), Founder of Kancelaria Prawna Skarbiec.
There are lawyers who practice law. And there are those who deal with problems for which the law has no ready answer. For over twenty years, Kancelaria Skarbiec has worked at the intersection of tax law, corporate structures, and the deeply human reluctance to give the state more than the state is owed. We advise entrepreneurs from over a dozen countries – from those on the Forbes list to those whose bank account was just seized by the tax authority and who do not know what to do tomorrow morning.
One of the most frequently cited experts on tax law in Polish media – he writes for Rzeczpospolita, Dziennik Gazeta Prawna, and Parkiet not because it looks good on a résumé, but because certain things cannot be explained in a court filing and someone needs to say them out loud. Author of AI Decoding Satoshi Nakamoto: Artificial Intelligence on the Trail of Bitcoin’s Creator. Co-author of the award-winning book Bezpieczeństwo współczesnej firmy (Security of a Modern Company).
Kancelaria Skarbiec holds top positions in the tax law firm rankings of Dziennik Gazeta Prawna. Four-time winner of the European Medal, recipient of the title International Tax Planning Law Firm of the Year in Poland.
He specializes in tax disputes with fiscal authorities, international tax planning, crypto-asset regulation, and asset protection. Since 2006, he has led the WGI case – one of the longest-running criminal proceedings in the history of the Polish financial market – because there are things you do not leave half-done, even if they take two decades. He believes the law is too serious to be treated only seriously – and that the best legal advice is the kind that ensures the client never has to stand before a court.
