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1 min readBlockingBank of England taxonomy 2.2.0Updated 11 November 2026

Solvency capital requirement - non-life and health catastrophe risk: values must agree (IR.27.01, Bank of England rule IR_bv0638)

A blocking check on the solvency capital requirement - non-life and health catastrophe risk template (IR.27.01), in the annual solo (ARS) return.

Check your file for this rule

The rule in plain words

The item "Catastrophe Risk Charge Factor before risk mitigation" reported in Solvency Capital Requirement - Non-life and Health catastrophe risk (IR.27.01.01.02) should be equal to the ratio between "Specified Gross Loss" and "Exposure"

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.

This is a blocking check. A return that fails it is normally rejected, so fix it before you submit. It runs only when your filing indicators mark IR.27.01 as reported.

The cells it reads

Solvency capital requirement - non-life and health catastrophe risk: natural catastrophe risk - windstorm (IR.27.01.01.02)

Rows

  • R0400Republic of Austria
  • R0410Kingdom of Belgium
  • R0420Czech Republic
  • R0430Swiss Confederation; Principality of Lichtenstein
  • R0440Kingdom of Denmark
  • R0441Republic of Slovenia
  • R0450French Republic [except Guadeloupe, Martinique, the Collectivity of Saint Martin and Réunion]; Principality of Monaco; Principality of Andorra
  • R0460Federal Republic of Germany
  • R0461Republic of Hungary
  • R0470Republic of Iceland
  • R0480Ireland
  • R0490Grand Duchy of Luxemburg
  • R0500Kingdom of the Netherlands
  • R0510Kingdom of Norway
  • R0520Republic of Poland
  • R0521Republic of Finland
  • R0530Kingdom of Spain
  • R0540Kingdom of Sweden
  • R0550United Kingdom of Great Britain and Northern Ireland
  • R0560Guadeloupe
  • R0570Martinique
  • R0580Collectivity of Saint Martin
  • R0590Réunion
  • R0600Total Windstorm specified Regions before diversification

Columns

  • C0050Exposure
  • C0060Specified Gross Loss
  • C0070Catastrophe Risk Charge Factor before risk mitigation

Which returns it applies to

Line4 Check runs it on annual solo (ARS) return on Bank of England taxonomy 2.2.0. The Bank of England applies it to annual solo (ARS) returns, as a blocking check.

The Bank’s own words and formula

In the Bank of England’s list of validations, word for word:

The item "Catastrophe Risk Charge Factor before risk mitigation" reported in IR.27.01.01.02 - Solvency Capital Requirement - Non-life and Health catastrophe risk should be equal to the ratio between "Specified Gross Loss" and "Exposure".
Show the formulaShow

The Bank of England's formula. Cells are written as {t: table, r: row, c: column}.

{t: IR.27.01.01.02, c: C0070, z: Z0001} * {t: IR.27.01.01.02, c: C0050, z: Z0001} = {t: IR.27.01.01.02, c: C0060, z: Z0001}

Every Solvency UK rule on IR.27.01

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.