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1 min readWarningBank of England taxonomy 2.2.0Updated 11 November 2026

For each LoB and Total in Non-Life Technical Provisions, "Risk margin" should not be negative (IR.05.04, Bank of England rule IR_bv0117)

A warning on the non-life income and expenditure template (IR.05.04), in the annual solo (ARS) and annual third-country branch (ARB) returns.

Check your file for this ruleWhat to do if it fails

The rule in plain words

For each LoB and Total in Non-Life Technical Provisions (IR.17.01.01.01), "Risk margin" should not be negative

What to do if your return fails it

  1. 01Open the table below and find the cells the rule reads.
  2. 02Look for a value below zero in these cells, such as an amount entered as a negative number.
  3. 03It runs only when your filing indicators mark IR.17.01 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

Non-life income and expenditure: non-life income, expenditure and business model analysis: reporting period (IR.05.04.01.01)

Row

  • R1950Risk margin

Columns

  • C0015All non-life business (ie excluding annuities stemming from accepted insurance and reinsurance contracts)
  • C0110Medical expense insurance (lines of business 1 and 13)
  • C0120Income protection insurance (lines of business 2 and 14)
  • C0130Workers' compensation insurance (lines of business 3 and 15)
  • C0135All (lines of business 4 and 16)
  • C0145All (lines of business 5 and 17)
  • C0160Marine, aviation and transport insurance (lines of business 6 and 18)
  • C0165All (lines of business 7 and 19)
  • C0185All (lines of business 8 and 20)
  • C0230Credit and suretyship insurance (lines of business 9 and 21)
  • C0240Legal expenses insurance (lines of business 10 and 22)
  • C0250Assistance (lines of business 11 and 23)
  • C0260Miscellaneous financial loss (lines of business 12 and 24)
  • C0310Health
  • C0320Casualty
  • C0330Marine, aviation and transport
  • C0340Property

Which returns it applies to

Line4 Check runs it on annual solo (ARS) and annual third-country branch (ARB) returns on Bank of England taxonomy 2.2.0. The Bank of England applies it to annual solo (ARS) and annual third-country branch (ARB) returns, as a warning.

The Bank’s own words and formula

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

For each LoB and Total in IR.17.01.01.01 - Non-Life Technical Provisions , "Risk margin" should not be negative.
Show the formulaShow

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

{t: IR.17.01.01.01, r: R0280} >= 0

Every Solvency UK rule on IR.05.04

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.