11. September 2026 Cyber Resilience Act CRA: Meldepflicht für aktiv ausgenutzte Schwachstellen und schwerwiegende Sicherheitsvorfälle an ENISA/CSIRT 20. September 2026 Lithuania i.SAF VAT invoice register Lithuania: i.SAF VAT invoice register submission due by the 20th Wiederkehrend 25. September 2026 Lithuania PVM (VAT) return Lithuania: VAT (PVM) return (FR0600) and payment due by the 25th Wiederkehrend 27. September 2026 Empowering Consumers for the Green Transition Directive Stärkung der Verbraucher für den ökologischen Wandel: Verbot vager und unbelegter Umweltaussagen gilt 30. September 2026 Lithuania PSD (self-employed compulsory health insurance) Lithuania: monthly compulsory health insurance (PSD) contribution for individual activity, due by month-end Wiederkehrend 20. Oktober 2026 Lithuania i.SAF VAT invoice register Lithuania: i.SAF VAT invoice register submission due by the 20th Wiederkehrend 25. Oktober 2026 Lithuania PVM (VAT) return Lithuania: VAT (PVM) return (FR0600) and payment due by the 25th Wiederkehrend 30. Oktober 2026 Lithuania packaging EPR (GPAIS) Lithuania: quarterly packaging/product producer report via GPAIS due 30 days after quarter-end Wiederkehrend 31. Oktober 2026 Lithuania PSD (self-employed compulsory health insurance) Lithuania: monthly compulsory health insurance (PSD) contribution for individual activity, due by month-end Wiederkehrend 31. Oktober 2026 Lithuania VAT (EU One-Stop-Shop scheme) Lithuania: One-Stop-Shop (OSS) VAT return for cross-border B2C sales, due end of month after each quarter Wiederkehrend 20. November 2026 Lithuania i.SAF VAT invoice register Lithuania: i.SAF VAT invoice register submission due by the 20th Wiederkehrend 25. November 2026 Lithuania PVM (VAT) return Lithuania: VAT (PVM) return (FR0600) and payment due by the 25th Wiederkehrend 30. November 2026 Lithuania PSD (self-employed compulsory health insurance) Lithuania: monthly compulsory health insurance (PSD) contribution for individual activity, due by month-end Wiederkehrend 2. Dezember 2026 EU AI Act AI Act: Ende der Übergangsfrist für die Kennzeichnung KI-generierter Inhalte in Bestandssystemen; Verbot von Generatoren für nicht einvernehmliche intime Deepfakes 9. Dezember 2026 Product Liability Directive Neue Produkthaftungsrichtlinie gilt: verschuldensunabhängige Haftung erstreckt sich auf Software, KI und digitale Dienste 20. Dezember 2026 Lithuania i.SAF VAT invoice register Lithuania: i.SAF VAT invoice register submission due by the 20th Wiederkehrend 24. Dezember 2026 eIDAS 2 EU Digital Identity Wallet: jeder Mitgliedstaat muss eine Brieftasche anbieten; öffentliche Stellen müssen sie akzeptieren 25. Dezember 2026 Lithuania PVM (VAT) return Lithuania: VAT (PVM) return (FR0600) and payment due by the 25th Wiederkehrend 31. Dezember 2026 Lithuania PSD (self-employed compulsory health insurance) Lithuania: monthly compulsory health insurance (PSD) contribution for individual activity, due by month-end Wiederkehrend 12. Januar 2027 Data Act Data Act: Cloud-Anbieter dürfen keine Wechsel- und Datenausgangsgebühren mehr verlangen 20. Januar 2027 Lithuania i.SAF VAT invoice register Lithuania: i.SAF VAT invoice register submission due by the 20th Wiederkehrend 20. Januar 2027 Machinery Regulation Maschinenverordnung ersetzt die Maschinenrichtlinie: neue CE-Anforderungen einschließlich Cybersicherheit und Software 25. Januar 2027 Lithuania PVM (VAT) return Lithuania: VAT (PVM) return (FR0600) and payment due by the 25th Wiederkehrend 30. Januar 2027 Lithuania packaging EPR (GPAIS) Lithuania: quarterly packaging/product producer report via GPAIS due 30 days after quarter-end Wiederkehrend 31. Januar 2027 Lithuania PSD (self-employed compulsory health insurance) Lithuania: monthly compulsory health insurance (PSD) contribution for individual activity, due by month-end Wiederkehrend 31. Januar 2027 Lithuania VAT (EU One-Stop-Shop scheme) Lithuania: One-Stop-Shop (OSS) VAT return for cross-border B2C sales, due end of month after each quarter Wiederkehrend 18. Februar 2027 Battery Regulation Digitaler Batteriepass verpflichtend für Elektrofahrzeug-, LV- und Industriebatterien über 2 kWh 19. Februar 2027 Lithuania packaging EPR (GPAIS) Lithuania: annual packaging/product producer report via GPAIS due 19 February Wiederkehrend 20. Februar 2027 Lithuania i.SAF VAT invoice register Lithuania: i.SAF VAT invoice register submission due by the 20th Wiederkehrend 25. Februar 2027 Lithuania PVM (VAT) return Lithuania: VAT (PVM) return (FR0600) and payment due by the 25th Wiederkehrend 28. Februar 2027 Lithuania PSD (self-employed compulsory health insurance) Lithuania: monthly compulsory health insurance (PSD) contribution for individual activity, due by month-end Wiederkehrend 20. März 2027 Lithuania i.SAF VAT invoice register Lithuania: i.SAF VAT invoice register submission due by the 20th Wiederkehrend 25. März 2027 Lithuania PVM (VAT) return Lithuania: VAT (PVM) return (FR0600) and payment due by the 25th Wiederkehrend 31. März 2027 Lithuania PSD (self-employed compulsory health insurance) Lithuania: monthly compulsory health insurance (PSD) contribution for individual activity, due by month-end Wiederkehrend 20. April 2027 Lithuania i.SAF VAT invoice register Lithuania: i.SAF VAT invoice register submission due by the 20th Wiederkehrend 25. April 2027 Lithuania PVM (VAT) return Lithuania: VAT (PVM) return (FR0600) and payment due by the 25th Wiederkehrend 30. April 2027 Lithuania PSD (self-employed compulsory health insurance) Lithuania: monthly compulsory health insurance (PSD) contribution for individual activity, due by month-end Wiederkehrend 30. April 2027 Lithuania packaging EPR (GPAIS) Lithuania: quarterly packaging/product producer report via GPAIS due 30 days after quarter-end Wiederkehrend 30. April 2027 Lithuania VAT (EU One-Stop-Shop scheme) Lithuania: One-Stop-Shop (OSS) VAT return for cross-border B2C sales, due end of month after each quarter Wiederkehrend 4. Mai 2027 Lithuania GPM (individual activity annual income tax) Lithuania: self-employed (individual activity) annual income tax return (GPM311) and payment, due 4 May 2027 Wiederkehrend 4. Mai 2027 Lithuania VSD/PSD (self-employed social insurance) Lithuania: annual VSD and PSD contributions settlement for individual activity, due 4 May 2027 Wiederkehrend 20. Mai 2027 Lithuania i.SAF VAT invoice register Lithuania: i.SAF VAT invoice register submission due by the 20th Wiederkehrend 25. Mai 2027 Lithuania PVM (VAT) return Lithuania: VAT (PVM) return (FR0600) and payment due by the 25th Wiederkehrend 31. Mai 2027 Lithuania PSD (self-employed compulsory health insurance) Lithuania: monthly compulsory health insurance (PSD) contribution for individual activity, due by month-end Wiederkehrend 31. Mai 2027 Lithuania Company Law (Akcinių bendrovių įstatymas) Lithuania: AGM approval and Legal Entities Register filing of annual financial statements, yearly 5-month deadline Wiederkehrend 15. Juni 2027 Lithuania corporate income tax (Pelno mokesčio įstatymas) Lithuania: annual corporate income tax return (PLN204) due 15 June Wiederkehrend 20. Juni 2027 Lithuania i.SAF VAT invoice register Lithuania: i.SAF VAT invoice register submission due by the 20th Wiederkehrend 25. Juni 2027 Lithuania PVM (VAT) return Lithuania: VAT (PVM) return (FR0600) and payment due by the 25th Wiederkehrend 30. Juni 2027 Lithuania PSD (self-employed compulsory health insurance) Lithuania: monthly compulsory health insurance (PSD) contribution for individual activity, due by month-end Wiederkehrend 30. Juni 2027 EUDR EU-Entwaldungsverordnung: Sorgfaltspflichten gelten für Kleinst- und Kleinunternehmen 9. Juli 2027 Instant Payments Regulation Sofortzahlungsverordnung: Senden von Euro-Echtzeitüberweisungen und Empfängerprüfung verpflichtend für Banken außerhalb des Euroraums (Polen, Schweden, Tschechien usw.) 20. Juli 2027 Lithuania i.SAF VAT invoice register Lithuania: i.SAF VAT invoice register submission due by the 20th Wiederkehrend 25. Juli 2027 Lithuania PVM (VAT) return Lithuania: VAT (PVM) return (FR0600) and payment due by the 25th Wiederkehrend 30. Juli 2027 Lithuania packaging EPR (GPAIS) Lithuania: quarterly packaging/product producer report via GPAIS due 30 days after quarter-end Wiederkehrend 31. Juli 2027 Lithuania PSD (self-employed compulsory health insurance) Lithuania: monthly compulsory health insurance (PSD) contribution for individual activity, due by month-end Wiederkehrend 31. Juli 2027 Lithuania VAT (EU One-Stop-Shop scheme) Lithuania: One-Stop-Shop (OSS) VAT return for cross-border B2C sales, due end of month after each quarter Wiederkehrend 2. August 2027 EU AI Act AI Act: vor August 2025 in Verkehr gebrachte GPAI-Modelle müssen die Anforderungen erfüllen 20. August 2027 Lithuania i.SAF VAT invoice register Lithuania: i.SAF VAT invoice register submission due by the 20th Wiederkehrend 25. August 2027 Lithuania PVM (VAT) return Lithuania: VAT (PVM) return (FR0600) and payment due by the 25th Wiederkehrend 31. August 2027 Lithuania PSD (self-employed compulsory health insurance) Lithuania: monthly compulsory health insurance (PSD) contribution for individual activity, due by month-end Wiederkehrend