Bookkeeping help
GPM311 for individual activity
GPM311 is the annual income-tax return for a person with individual activity in Lithuania. VectorInvoice builds a local summary from the journal. That summary is not an official GPM311 file, and VectorInvoice does not submit it.
The due date used here is 1 May of the year after the income year. 1 May is a public holiday, so the date moves to the next working day.
A tax reserve for 2026 is shown only for a natural person, and only when the profit is at most €42,500. Up to €20,000 the published rate is 5%. Between those amounts the app draws a straight line and labels it as its own estimate, not a VMI worked example. Above €42,500 the rate depends on all annual income, so no figure is shown. An MB or a UAB gets no personal-income figures.
Official source
Read the VMI page for the current rules.
VectorInvoice is software, not tax advice. For individual questions, consult a certified tax advisor (mokesčių konsultantas / Steuerberater).