Every entry below is the rule as Estonia publishes it. It is a reference, not a calendar: where a deadline runs from something only you know, this page says so instead of showing a date.
This is the rule as published by the registry, checked against the primary source on the date shown. It is not your filing date. Where a deadline runs from incorporation, from a fiscal year the company itself elects, or from an event only you know about, no date can be derived here at all — the figure you see is the formula, not the answer. Extensions, transitional regimes and entity-specific exemptions are not reflected. Confirm with the registry before you rely on a date.
The Estonian registrar publishes the annual report deadline as a period counted from the end of the financial year, not as a calendar date: the report must be submitted «within six (6) months of the end of the financial year». The registrar's own reminders show what that means in the ordinary case — «legal entities … whose financial year ended on 31.12.2023 must submit the annual report by June 30» — so the calendar year is the usual financial year, but it is the end of the financial year, not a statutory date, that the deadline runs from. The provision of the Accounting Act that fixes the length of the financial year and allows a company to set a different start and end date could not be read from the primary publisher, so this record does not assert a statutory financial year. It treats the financial year end as a date the user must supply, and therefore no deadline counted from it is shown here as a calendar number. The Estonian tax calendar is independent of the financial year: the monthly returns below run from the calendar month, not from the company's year end.