Poland: INTRASTAT declaration due by the 10th (once statistical thresholds are exceeded)
Re-verified 2026-09-09: GUS's stat.gov.pl/intrastat page redirects away with no dedicated Intrastat content; filing now runs through puesc.gov.pl (Krajowa Administracja Skarbowa), whose "Złóż zgłoszenie INTRASTAT" service states the declaration is due "nie później niż do 10. dnia miesiąca następującego po okresie [sprawozdawczym]", confirming the 10th-of-month deadline. Current-year PLN thresholds still not independently re-confirmed — verify with GUS/KAS.
Next: 10 November 2026then 10 December 2026, 10 January 2027
Poland-registered importers/exporters trading goods with other EU countries above the annual GUS threshold - most relevant to an e-commerce importer sourcing or shipping stock across the EU at meaningful volume; a small SaaS business with no physical goods trade is not affected.