Every EU compliance deadline that applies to your company, on one timeline.

Lithuania: advance corporate income tax payment (FR0430), due quarterly by the 15th

Re-checked 2026-09-09: vmi.lt/evmi/pelno-mokestis is reachable but is a collapsed navigation menu with no extractable article text on quarterly advance payments this session. The 15th-of-month-3/6/9/12 pattern and ~EUR 300,000 exemption threshold remain well-established under CIT Art. 47 but were not independently re-confirmed against primary-source text. Re-verify Art. 47 text and the current-year threshold with VMI.

Next: 15 September 2026then 15 December 2026, 15 March 2027

Lithuanian companies (UAB and similar) whose prior-year taxable income exceeded the exemption threshold; does not apply to newly registered companies in their first tax period or to companies below the threshold, which likely covers many micro-sized (P1-type) businesses.

Lithuania: i.SAF VAT invoice register submission due by the 20th

Next: 20 September 2026then 20 October 2026, 20 November 2026

Lithuania-registered VAT-payer companies with a monthly VAT tax period; companies on a quarterly or half-yearly VAT tax period submit i.SAF on the same schedule as their VAT return instead.

Lithuania: VAT (PVM) return (FR0600) and payment due by the 25th

Next: 25 September 2026then 25 October 2026, 25 November 2026

Lithuania-registered companies whose taxable turnover exceeds the €45,000 mandatory registration threshold (current or preceding calendar year), plus companies that register voluntarily below that threshold and use a monthly tax period.

Data Act: cloud providers must stop charging switching and data-egress fees

All cloud, SaaS, PaaS and hosting providers serving EU customers; every business that buys cloud services benefits.

Lithuania: AGM approval and Legal Entities Register filing of annual financial statements, yearly 5-month deadline

Recurring version of the former one-off entry lt-annual-financial-statements-5-months-2026, which is retired by this entry. Applies from a financial year ending on/after 2026-07-01, so a standard 1 Jan-31 Dec 2026 financial year is the first to fall under the combined 5-month deadline (2027-05-31).

Next: 31 May 2027then 31 May 2028, 31 May 2029

All Lithuanian akcinės bendrovės (AB) and uždarosios akcinės bendrovės (UAB) - the standard legal forms used by the great majority of Lithuanian SMEs - for financial years ending on or after 1 July 2026.

Lithuania: annual corporate income tax return (PLN204) due 15 June

Recurring version of the former one-off entry lt-cit-annual-return-pln204-2027, which is retired by this entry.

Next: 15 June 2027then 15 June 2028, 15 June 2029

All Lithuanian companies liable to corporate income tax, including small entities taxed at 0%/7% and standard-rate (17%) taxpayers.