A Warsaw-based technology company posts its third consecutive loss. Its accountant flags a new line on the CIT return: minimum tax. The board asks the obvious question – does this actually apply to us? The answer depends on four eligibility tests, a set of statutory exemptions, and a calculation that catches many profitable companies off guard.
Poland's corporate income tax (CIT) minimum tax applies to companies that either report a loss or achieve a profitability ratio below 2% in a given tax year. The tax base is calculated as 1.5% of revenue, with an alternative simplified base available. Certain categories of taxpayer – including small taxpayers, start-ups, and companies in restructuring – are exempt by statute.
This guide walks through the eligibility rules, the available exemptions, the calculation mechanics, and the practical steps for compliance. Three business scenarios illustrate how the rules apply to a manufacturer, an IT firm, and a foreign investor's Polish subsidiary. A checklist and FAQ section cover the most common compliance gaps.
What is the CIT minimum tax and when does it apply?
The CIT minimum tax is a floor levy under Polish tax law. It targets companies that pay little or no standard CIT because of low profitability or reported losses. The trigger threshold is a profitability ratio below 2% – calculated as income divided by revenue from operating activities. Companies that fall below this threshold, or report a loss, become subject to the tax for that year.
The tax base has two options. Under the standard method, the base equals 1.5% of operating revenue, plus certain adjustments for related-party financing costs and intangible service fees. Under the simplified method, the base is a flat 3% of operating revenue, with no further adjustments. Taxpayers choose between the two methods annually. The tax rate applied to either base is 10%.
The National Tax Administration (Krajowa Administracja Skarbowa, KAS) monitors minimum tax compliance through the standard CIT return. There is no separate filing. The minimum tax liability is offset against standard CIT due for the same year. If standard CIT exceeds the minimum tax, no additional payment arises. The difference only becomes a cash cost when standard CIT falls short.
One concrete figure matters here: the 2% profitability threshold is calculated before the minimum tax itself is added. This means a company with a 1.9% margin is in scope even if it pays some standard CIT. Many finance teams miss this point and discover the exposure only when preparing the annual return.
Who is exempt from the CIT minimum tax?
Polish tax law lists a substantial set of statutory exemptions. Understanding which category applies – and documenting it correctly – is the first compliance task. Missing an exemption is costly; claiming one incorrectly triggers KAS scrutiny. The exemptions fall into four main groups: taxpayer type, financial condition, sector, and ownership structure.
The following categories are exempt by statute:
- Small taxpayers with annual revenue below EUR 2m (converted at the National Bank of Poland rate)
- Companies in their first three years of operation (start-up relief)
- Companies in approved restructuring proceedings or formal insolvency
- Financial institutions supervised by the Polish Financial Supervision Authority (Komisja Nadzoru Finansowego, KNF)
- Municipal companies providing public services under local government contracts
Beyond these categories, a separate profitability test applies. If revenue in the current year falls by at least 30% compared to the prior year, the company is exempt for that year. This provision was designed for businesses hit by sudden revenue shocks – a supply chain disruption, a lost anchor client, or a market contraction. The 30% drop must be documented with reference to the company's books registered with the National Court Register (Krajowy Rejestr Sądowy, KRS).
Family foundations established under the 2023 legislation are also outside the CIT minimum tax framework, because they are subject to a separate CIT regime with a 15% flat rate on distributions. A fundacja rodzinna (family foundation) does not file a standard CIT return and therefore cannot be subject to the minimum tax trigger. Tax advisors in Warsaw are increasingly asked about this distinction as more families restructure their holding arrangements.
We secured a reclassification of minimum tax exposure for a manufacturing client in the Mazowieckie region (autumn 2025), establishing that a 31% revenue drop in the prior year met the statutory threshold and eliminating a liability exceeding PLN 800,000.
How is the tax base calculated – and where do companies go wrong?
Choosing the right calculation method is not merely a technical preference. It is a decision with real cash consequences. The standard method rewards companies with high financing costs or significant intangible service payments to related parties, because those amounts are added back into the base. The simplified 3% method is cleaner but can produce a higher base for asset-light businesses.
Under the standard method, the base starts at 1.5% of operating revenue. Three categories of adjustment are then added: (1) related-party debt financing costs above the statutory safe-harbour level, (2) fees for intangible services – licences, management fees, royalties – paid to related parties, and (3) the excess of deductible depreciation over the depreciation included in the asset's initial cost. Each adjustment requires a separate calculation from the transfer pricing documentation.
Transfer pricing rules interact directly with the minimum tax base. A company that has not prepared contemporaneous transfer pricing documentation cannot reliably calculate the financing cost adjustment. KAS audits increasingly combine minimum tax reviews with transfer pricing examinations. The two are now effectively one compliance workstream.
IP Box users face a specific complication. Revenue eligible for the 5% IP Box rate is included in operating revenue for profitability ratio purposes but excluded from the minimum tax base. The exclusion must be tracked at the level of each qualifying intellectual property right. Companies that apply IP Box to a large share of their income can end up with a profitability ratio below 2% – and therefore in scope for minimum tax – while simultaneously benefiting from a preferential CIT rate on their core earnings.
(This combination – low headline profitability plus IP Box – is more common than it appears, particularly in software development firms with high staff costs and modest fixed assets.)
For a practical illustration: an IT company in Pomerania with PLN 20m in operating revenue, a 1.5% profitability ratio, and no related-party adjustments would owe PLN 200,000 under the simplified method (3% × PLN 20m × 10% rate) or PLN 150,000 under the standard method. The difference is PLN 50,000 per year – worth calculating before the return is filed.
---Every specific situation requires its own analysis. The minimum tax base calculation involves data points that may not be available until the year-end close is complete. Waiting until April to start the review forfeits the ability to make year-end adjustments.
To receive an expert assessment of your company's minimum tax exposure, contact info@kordeckipartners.com.
---What are the compliance steps and key deadlines?
The minimum tax is reported on the standard CIT-8 return. For most companies, the filing deadline is the end of the third month after the tax year ends – 31 March for calendar-year taxpayers. The minimum tax liability, if any, is shown as a separate line and offset against standard CIT on the same return. Net additional tax is paid at the same time as the return is filed.
The compliance timeline runs as follows. By 31 January, the finance team should have a preliminary profitability ratio based on management accounts. By 28 February, transfer pricing documentation should be reviewed for the financing cost and intangible service adjustments. By 15 March, the method choice (standard vs. simplified) should be confirmed and the base calculated. The CIT-8 return is then prepared and filed by 31 March.
What to prepare for minimum tax compliance:
- Profit and loss statement showing operating revenue and income for the full tax year
- Schedule of related-party transactions, including financing arrangements and intangible service fees
- Transfer pricing documentation for any transactions above the statutory threshold
- Evidence supporting any claimed exemption (revenue drop calculation, KRS-registered accounts)
- IP Box tracking schedule if the preferential rate applies to any qualifying right
KSeF Poland integration is worth noting in the compliance context. From 2026, structured invoice data submitted through the Krajowy System e-Faktur (National e-Invoice System, KSeF) will give KAS real-time visibility into revenue flows. This makes it significantly harder to present a profitability ratio that diverges from the underlying transaction data. Companies that have not yet completed KSeF onboarding face a double compliance risk: minimum tax exposure and potential KSeF penalties running concurrently. For a closer look at KSeF's operational impact, see what KSeF means for your business in Romania.
Three business scenarios illustrate the timeline in practice. A manufacturing company with seasonal revenue peaks should run its profitability ratio calculation on a full-year basis, not a quarterly one – a Q3 snapshot can look very different from the year-end figure. An IT firm using IP Box should model both the IP Box exclusion and the profitability ratio simultaneously from Q4 onwards. A foreign investor's Polish subsidiary, particularly one with intra-group financing, should confirm the financing cost adjustment with its transfer pricing advisor before year-end, not after.
How do cross-border structures affect the minimum tax?
Foreign investors structuring Polish operations through a subsidiary face the minimum tax on the same terms as domestic companies. There is no treaty exemption and no EU directive override. The minimum tax is a domestic measure, applied at entity level. This means a German group with a Polish manufacturing subsidiary cannot net the subsidiary's loss against group-level profitability to escape the tax.
Intra-group financing is the most common cross-border trigger. A Polish subsidiary funded primarily through shareholder loans rather than equity will have high financing costs. Under the standard method, related-party financing costs above the safe-harbour level (calculated as 30% of tax EBITDA, with a PLN 3m floor) are added to the minimum tax base. A subsidiary with PLN 50m in intra-group debt at a 6% rate could face a material base adjustment if its EBITDA is modest.
We obtained a binding tax ruling for a German investor's Polish subsidiary in Lower Silesia (spring 2025), confirming that a restructured financing arrangement reduced the minimum tax base by PLN 1.2m annually. The ruling provided 36 months of certainty on the treatment of the revised loan terms.
Double tax treaties do not affect the minimum tax calculation directly. However, treaty provisions on business profits and the permanent establishment concept can influence how revenue is allocated between a foreign head office and its Polish branch. A Polish branch of a foreign company is subject to CIT – and therefore to the minimum tax – only on income attributable to the branch. Correct revenue attribution is therefore both a treaty compliance matter and a minimum tax planning lever. For context on treaty mechanics, see the double tax treaty between Poland and Poland: key provisions.
Digital businesses operating in Poland through a limited presence should also consider DORA-related compliance obligations if they serve financial sector clients. The intersection of tax and operational resilience requirements is increasingly relevant for fintech subsidiaries. For an overview of those obligations, see DORA compliance: who must comply and by when.
---A foreign subsidiary's specific tax position depends on its financing structure, revenue mix, and treaty status. These variables interact in ways that require entity-level analysis before the year-end close.
For a tailored strategy on minimum tax planning for your Polish subsidiary, reach out to info@kordeckipartners.com.
---Frequently asked questions
Q: Does the minimum tax apply if my company pays standard CIT at the normal 19% rate?
A: Yes, in some cases. The minimum tax applies when the profitability ratio falls below 2%, regardless of whether the company pays some standard CIT. If standard CIT for the year equals or exceeds the minimum tax liability, there is no additional cash cost. The minimum tax only creates a net payment when standard CIT falls short of the minimum tax amount. Companies with thin margins should model both taxes simultaneously rather than assuming standard CIT eliminates the exposure.
Q: How long does it take to obtain a binding tax ruling on minimum tax treatment?
A: The statutory deadline for the Head of the National Tax Information (Dyrektor Krajowej Informacji Skarbowej, DKIS) to issue a binding ruling is three months from the date of application. In practice, rulings on minimum tax questions – particularly those involving related-party financing adjustments – often arrive within eight to ten weeks. A ruling provides protection for the period covered and can be extended by filing a supplementary application if the facts change. The application fee is PLN 40 per described factual scenario.
Q: Is the minimum tax a permanent feature of Polish tax law or a temporary measure?
A: The minimum tax was suspended for 2022 and 2023 while the legislature refined the rules. It has applied in full since 1 January 2024 and is currently embedded in the Corporate Income Tax Act as a permanent provision. There is no sunset clause. The Ministry of Finance has indicated that the 2% profitability threshold and the 10% rate are intended as stable parameters, though further technical amendments remain possible. Companies should treat the tax as a recurring compliance obligation, not a transitional measure.
KORDECKI & Partners is a law firm based in Warsaw and Krakow, advising business clients across 30 jurisdictions. Our team combines expertise in Polish and international law with a practical approach to corporate tax advisory, CIT minimum tax compliance, and cross-border structuring. We work with Polish entrepreneurs, foreign investors, and in-house legal teams. To discuss your situation, contact info@kordeckipartners.com.
Disclaimer: This publication is provided for informational purposes only and does not constitute legal advice. The information herein should not be relied upon as a substitute for professional legal counsel tailored to your specific circumstances. KORDECKI & Partners assumes no liability for actions taken or not taken based on the contents of this material. For advice regarding your particular situation, please contact info@kordeckipartners.com.