Every Lithuanian company registered for VAT files an i.SAF register every month, even an empty one, and has to produce a full SAF-T audit file within about ten days when VMI asks. A missed register is a fine of up to €390 under the Code of Administrative Offences; ignoring a written VMI request can reach €6,000.
A map of VMI, Sodra, customs and the Centre of Registers from a developer's point of view, with the data fields, deadlines and endpoints behind each Lithuanian filing.
The monthly, quarterly and annual filing and payment dates a Lithuanian company has to meet in 2026, who each one applies to, and the exact day each falls on this year.
A grounded comparison of accounting and tax platforms that handle Lithuanian and EU VAT through APIs, SDKs and webhooks, with clear notes on what each one actually covers.