1 min readWarningEIOPA taxonomy 2.10.0Updated 11 November 2026

Solvency capital requirement - for undertakings on standard formula and solvency capital requirement - for undertakings using an internal model (partial or full): a conditional check (S.25.01, S.25.05, EIOPA rule BV1080)

A warning on the solvency capital requirement - for undertakings on standard formula (S.25.01) and solvency capital requirement - for undertakings using an internal model (partial or full) (S.25.05) templates, in the annual solo (ARS) and annual branch (ARB) returns.

It applies to 2.8.2 returns too, the release for the 2026 returns, and Line4 Check runs it there as well.

The rule in plain words

These cells should be empty when Approach based on average tax rate is used

The headline gives only the template and the kind of check, because the rule is too long to say in a headline. The plain words above say all of it.

What to do if your return fails it

  1. 01Open the tables below and find the cells the rule reads.
  2. 02The check applies only when its first part holds in your return. When it does, the second part must hold too: fix the second part, or correct the first.
  3. 03It runs only when your filing indicators mark S.25.05 as reported.
  4. 04This is a warning. It does not stop the return on its own, but your supervisor may ask you to explain it.

The cells it reads

Solvency capital requirement - for undertakings on standard formula: approach to tax rate (S.25.01.01.03)

Row

  • R0590Approach based on average tax rate

Column

  • C0109Yes/No

Solvency capital requirement - for undertakings on standard formula: calculation of loss absorbing capacity of deferred taxes (S.25.01.01.04)

Rows

  • R0600DTA
  • R0610DTA carry forward
  • R0620DTA due to deductible temporary differences
  • R0630DTL

Column

  • C0120After the shock

Solvency capital requirement - for undertakings using an internal model (partial or full): approach to tax rate (S.25.05.01.03)

Row

  • R0590Approach based on average tax rate

Column

  • C0109Yes/No

Solvency capital requirement - for undertakings using an internal model (partial or full): calculation of loss absorbing capacity of deferred taxes (S.25.05.01.04)

Rows

  • R0600DTA
  • R0610DTA carry forward
  • R0620DTA due to deductible temporary differences
  • R0630DTL

Column

  • C0120After the shock

Which returns it applies to

Line4 Check runs it on annual solo (ARS) and annual branch (ARB) returns on EIOPA taxonomy 2.10.0. EIOPA applies it to annual ECB solo (AES), annual ECB branch (AEB), annual solo (ARS) and annual branch (ARB) returns, as a warning.

EIOPA’s own words and formula

The plain words above are EIOPA’s own, word for word, from its list of validations.

Show the formulaShow

EIOPA's formula. Cells are written as {t: table, r: row, c: column}.

if ({t: S.25.05.01.03, r: R0590, c: C0109} = [s2c_AP:x55]) then isNull({t: S.25.05.01.04, r: R0600, c: C0120, z: Z0001}) and isNull({t: S.25.05.01.04, r: R0610, c: C0120, z: Z0001}) and isNull({t: S.25.05.01.04, r: R0620, c: C0120, z: Z0001}) and isNull({t: S.25.05.01.04, r: R0630, c: C0120, z: Z0001}) else true()

Every Solvency II rule on S.25.01

Checks like this one, run at the point of submission, are the first step to real-time supervision. Line4 builds SupTech software for financial regulators that runs checks like these as each return arrives.