15 september 2026 Lithuania corporate income tax (Pelno mokesčio įstatymas) Lithuania: advance corporate income tax payment (FR0430), due quarterly by the 15th Terugkerend 20 september 2026 Lithuania i.SAF VAT invoice register Lithuania: i.SAF VAT invoice register submission due by the 20th Terugkerend 25 september 2026 Lithuania PVM (VAT) return Lithuania: VAT (PVM) return (FR0600) and payment due by the 25th Terugkerend 20 oktober 2026 Lithuania i.SAF VAT invoice register Lithuania: i.SAF VAT invoice register submission due by the 20th Terugkerend 25 oktober 2026 Lithuania PVM (VAT) return Lithuania: VAT (PVM) return (FR0600) and payment due by the 25th Terugkerend 20 november 2026 Lithuania i.SAF VAT invoice register Lithuania: i.SAF VAT invoice register submission due by the 20th Terugkerend 25 november 2026 Lithuania PVM (VAT) return Lithuania: VAT (PVM) return (FR0600) and payment due by the 25th Terugkerend 15 december 2026 Lithuania corporate income tax (Pelno mokesčio įstatymas) Lithuania: advance corporate income tax payment (FR0430), due quarterly by the 15th Terugkerend 20 december 2026 Lithuania i.SAF VAT invoice register Lithuania: i.SAF VAT invoice register submission due by the 20th Terugkerend 25 december 2026 Lithuania PVM (VAT) return Lithuania: VAT (PVM) return (FR0600) and payment due by the 25th Terugkerend 12 januari 2027 Data Act Dataverordening (Data Act): cloudaanbieders moeten stoppen met kosten voor overstappen en data-egress 20 januari 2027 Lithuania i.SAF VAT invoice register Lithuania: i.SAF VAT invoice register submission due by the 20th Terugkerend 25 januari 2027 Lithuania PVM (VAT) return Lithuania: VAT (PVM) return (FR0600) and payment due by the 25th Terugkerend 20 februari 2027 Lithuania i.SAF VAT invoice register Lithuania: i.SAF VAT invoice register submission due by the 20th Terugkerend 25 februari 2027 Lithuania PVM (VAT) return Lithuania: VAT (PVM) return (FR0600) and payment due by the 25th Terugkerend 15 maart 2027 Lithuania corporate income tax (Pelno mokesčio įstatymas) Lithuania: advance corporate income tax payment (FR0430), due quarterly by the 15th Terugkerend 20 maart 2027 Lithuania i.SAF VAT invoice register Lithuania: i.SAF VAT invoice register submission due by the 20th Terugkerend 25 maart 2027 Lithuania PVM (VAT) return Lithuania: VAT (PVM) return (FR0600) and payment due by the 25th Terugkerend 20 april 2027 Lithuania i.SAF VAT invoice register Lithuania: i.SAF VAT invoice register submission due by the 20th Terugkerend 25 april 2027 Lithuania PVM (VAT) return Lithuania: VAT (PVM) return (FR0600) and payment due by the 25th Terugkerend 20 mei 2027 Lithuania i.SAF VAT invoice register Lithuania: i.SAF VAT invoice register submission due by the 20th Terugkerend 25 mei 2027 Lithuania PVM (VAT) return Lithuania: VAT (PVM) return (FR0600) and payment due by the 25th Terugkerend 31 mei 2027 Lithuania Company Law (Akcinių bendrovių įstatymas) Lithuania: AGM approval and Legal Entities Register filing of annual financial statements, yearly 5-month deadline Terugkerend 15 juni 2027 Lithuania corporate income tax (Pelno mokesčio įstatymas) Lithuania: advance corporate income tax payment (FR0430), due quarterly by the 15th Terugkerend 15 juni 2027 Lithuania corporate income tax (Pelno mokesčio įstatymas) Lithuania: annual corporate income tax return (PLN204) due 15 June Terugkerend 20 juni 2027 Lithuania i.SAF VAT invoice register Lithuania: i.SAF VAT invoice register submission due by the 20th Terugkerend 25 juni 2027 Lithuania PVM (VAT) return Lithuania: VAT (PVM) return (FR0600) and payment due by the 25th Terugkerend 20 juli 2027 Lithuania i.SAF VAT invoice register Lithuania: i.SAF VAT invoice register submission due by the 20th Terugkerend 25 juli 2027 Lithuania PVM (VAT) return Lithuania: VAT (PVM) return (FR0600) and payment due by the 25th Terugkerend 20 augustus 2027 Lithuania i.SAF VAT invoice register Lithuania: i.SAF VAT invoice register submission due by the 20th Terugkerend 25 augustus 2027 Lithuania PVM (VAT) return Lithuania: VAT (PVM) return (FR0600) and payment due by the 25th Terugkerend