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Poland enforces GDPR through UODO. NIS2 is transposed and in force via an amendment to the Act on the National Cybersecurity System (KSC), effective 3 April 2026, bringing an estimated 42,000 entities into scope with a phased registration and compliance timeline running into 2028.
Content reviewed 2026-09-08 , informational, not legal advice. Confirm current requirements with the authority linked below or your own counsel.
EU-wide regulation on personal data processing, directly applicable in Poland without transposition.
SourcePoland's national data protection act of 10 May 2018, which implements GDPR nationally and establishes UODO's powers.
SourcePoland's NIS2 transposition, an amendment to the 2018 National Cybersecurity System Act. Signed 19 February 2026 and in force since 3 April 2026.
Source72 hours
GDPR Article 33 applies uniformly: notify UODO without undue delay and, where feasible, within 72 hours of becoming aware of a breach.
Notify: Urząd Ochrony Danych Osobowych (UODO)
SourcePublished legal maximums, not a personalized estimate, not legal advice.
GDPR Article 83(5)
Up to €20,000,000 or 4% of total worldwide annual turnover of the preceding financial year, whichever is higher
SourceKSC Act (amended, NIS2)
Up to €10,000,000 or 2% of worldwide annual turnover for key entities; an extraordinary fine of up to PLN 100,000,000 where a violation creates a direct, serious threat to state/public security, life, health, or service continuity; management board members can additionally be fined up to 3x their monthly salary
Figures corroborated by Polish legal-tracker sources summarizing the amended KSC Act; not verified directly against the consolidated statute text.
SourceApplicable , as of 2026-09-08
Fully transposed and in force. The KSC Act amendment implementing NIS2 entered into force on 3 April 2026 (signed 19 February 2026). It affects an estimated 42,000 entities across 18 sectors. The Register of Key and Important Entities opened 13 April 2026; self-registration ran 7 May – 3 October 2026; full risk-management-measure compliance is due by 3 April 2027, with first mandatory audits for new key entities by 3 April 2028.
SourceUrząd Ochrony Danych Osobowych(UODO)
Visit authority siteThe amended KSC (National Cybersecurity System) Act, Poland's NIS2 transposition, entered into force on 3 April 2026. Entities had until 3 October 2026 to register and have until 3 April 2027 to fully implement required risk-management measures.
UODO (Urząd Ochrony Danych Osobowych), Poland's data protection authority, notification is due within 72 hours where feasible, per GDPR Article 33.
Yes, in addition to entity-level fines of up to €10 million or 2% of global turnover, management board members of key and important entities can be fined up to three times their monthly salary for compliance failures.
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