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In forceInsurers and reinsurers: Solvency II reporting (EU, EIOPA)Last checked 13 November 2026

Annual Solvency II return, solo (ars)

A regulatory return listed by the Czech National Bank (CNB), Czech Republic.

The EU-harmonised annual Solvency II quantitative reporting templates for an individual insurer, giving fuller detail than the quarterly return on technical provisions, own funds, capital requirements and the insurer's risk profile. Source

The facts

Who files
Domestic insurance and reinsurance undertakings (Decree No. 305/2016 Coll., section 3(1) and section 4(1)). Source
How often
Annual. Source
Deadline
Not separately restated by the CNB's decree for most templates; EIOPA's implementing technical standard sets the EU-wide remittance dates relative to the reference date. Filed through the CNB's SDAT system. Source
Format
XBRL-XML, Other. Filed in SDAT using the EIOPA Solvency II taxonomy (version 2.8.2 for 2026 year-end reporting, moving to 2.10.0 from the first quarter of 2027); an XBRL instance or SDAT's own native SDAT-XML format may be used. Source
How it is filed
Filing route recorded for the CNB: SDAT (Sběr dat ČNB). See how firms file with the CNB.
Status
In force
Group
Insurers and reinsurers: Solvency II reporting (EU, EIOPA)

Templates (0)

The library lists no templates for this return.

EU return: the templates and instructions are defined by EIOPA. See the library's EIOPA entry eiopa/ars (docs/eiopa/ars.md). Czech firms use EIOPA's templates and taxonomy. Source

Validation rules

The CNB publishes the checks it runs on this return. They could not be counted from the published material. Software can run them exactly as published. Source

How they are written: EIOPA validation rules in the EIOPA taxonomy (see the EIOPA entry); SDAT taxonomy checks plus the CNB's own national validation rules.

The CNB also runs 431 of its own national validation rules on top of the EIOPA taxonomy's rules (see national-validation-rules-insurance), covering the Solvency II QRTs, the ECB add-on templates and five national templates (ROPE10_11, DOPE32_11, DOPE32_21, DOPE34_14 and DOPES34_12).

How they were counted

Not counted here: EIOPA's validation rules apply (see eiopa/qrs).

Counts are in the CNB's own unit, so they are not comparable with other regulators' counts.

Public data

Published only added up across firms. Aggregate indicators built from this return are published in the CNB's ARAD time series database, broken down by life and non-life insurance. Source

Where it is published (Web time-series database (ARAD), with CSV/Excel export)

  • ARAD time series database: insurers and pension companies

    Added up across firms · Web time-series database (ARAD), with CSV/Excel export

    Aggregate indicator sets for insurers (assets, liabilities and equity, profit and loss for life and non-life business), and for pension management companies and the funds they manage (assets, liabilities and equity, profit and loss, capital and capital requirements, and receipts, payments and benefit numbers), built from their Solvency II and national returns. Source

Official documents (4)

The CNB's own files, with the size and SHA-256 fingerprint of each as downloaded on 13 November 2026, so anyone can tell whether a copy is the same version.

Sources

Every page and document this return's facts were read from.

Knowing exactly what is collected, in what format and under which rules is the first step to real-time supervision. Line4 builds SupTech software for financial regulators that runs checks like these as each return arrives.

Line4's text and records here are free to reuse under CC BY 4.0. Please credit: “Source: Line4 regulatory submissions library (CC BY 4.0), https://www.line4.ai”. The regulators' documents, forms, taxonomies, rules and data belong to them: see CNB's reuse terms. This describes what regulators publish. It is not legal or regulatory advice: always rely on the regulator's own text.

Source: the CNB (Czech National Bank, https://www.cnb.cz). Documents copied here are unchanged. The plain-English summaries are Line4's own; the CNB does not endorse this library.

Last checked 13 November 2026.