NIS2 in Estonia
What binds you in Estonia is the national law transposing NIS2 — not the directive itself. Here is who supervises you, where you register, and where you report.
Reviewed . Verify against the national official journal before relying on this for a filing.
National transposition
Küberturvalisuse seadus (Cybersecurity Act), as amended for NIS2
The amendments bringing NIS2 into Estonian law took effect on 1 January 2026.
Eesti infoturbestandard — Estonian Information Security Standard — E-ITS
by Riigi Infosüsteemi Amet (RIA) — Information System Authority. Built on The Estonian national information security standard, developed from IT-Grundschutz methodology.
Estonia is one of the few member states to NAME the route to compliance: conformity with E-ITS, or with ISO/IEC 27001 as its recognised equivalent, is accepted as a means of meeting the security obligations. Elsewhere the choice of framework is left to the entity.
A label is not compliance
E-ITS conformity is a means of meeting the security obligations, not a discharge of every NIS2 duty: registration, governance and incident notification obligations stand on their own. Verify which version of the standard the supervisor currently expects before scoping an assessment.
E-ITS in full — levels, controls and what it does not cover →
Who supervises you
Information System Authority is the competent authority designated by Estonia. It holds the article 32 and 33 supervisory powers: inspections and audits, requests for information and evidence, binding instructions, orders to remedy deficiencies, and administrative fines. For essential entities those powers are exercised ex ante — without needing any indication of non-compliance.
Incident notifications under article 23 normally go to CERT-EE, though some member states route them through the competent authority instead. Confirm the channel before you need it: the 24-hour clock is not the moment to discover which portal applies.
What differs from the directive
Because NIS2 is a directive, Estonia legislated its own version of it. The security baseline in article 21 is common across the Union and will not differ. What does differ:
- Registration. The portal, the information required and the deadline are national.
- Scope. Several member states extended coverage below the directive's size thresholds, or added sectors of national importance.
- Penalty calibration. The article 34 ceilings are common; how the authority calibrates within them is not.
- Reporting format. Deadlines are fixed by the directive; the form and the language are national.
If you operate in several member states
You have one security programme and several compliance relationships. Registration, supervision and reporting are per-jurisdiction, and a cross-border incident can require filings in each affected member state. Article 26 sets jurisdiction rules — generally the member state of establishment, with specific rules for digital providers.