Line4

1 min readBlockingBank of England taxonomy 2.2.0Updated 11 November 2026

SCR excluding capital add-on (PIM and IM firms) = sum of IR.25.05 components + diversification between risk modules (IRR.25.04, IRR.25.05, IR.01.02, Bank of England rule IR_bv2048_03-01)

A blocking check on the solvency capital requirement (IRR.25.04), solvency capital requirement - partial or full internal model components (IRR.25.05) and basic information - general (IR.01.02) templates, in the annual solo (ARS) return.

The Bank writes the same rule out under another validation ID, IR_bv2048_03-02, each with its own page.

Check your file for this ruleWhat to do if it fails

The rule in plain words

SCR excluding capital add-on (PIM and IM firms) = sum of IR.25.05 components + diversification between risk modules

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. 03The Bank of England allows a small rounding difference, worked out from the decimals each value is reported with.
  4. 04It runs only when your filing indicators mark IR.01.02, IRR.25.04 and IRR.25.05 as reported.
  5. 05This is a blocking check. A return that fails it is normally rejected, so fix it before you submit.

The cells it reads

Solvency capital requirement (IRR.25.04.01.01)

Rows

  • R0436Diversification between risk modules
  • R0460Solvency capital requirement excluding capital add-on

Column

  • C0010c

Solvency capital requirement - partial or full internal model components (IRR.25.05.01.01)

Column

  • C0030Calculation of the Solvency Capital Requirement

Basic information - general (IR.01.02.01.01)

Row

  • R0130Method of Calculation of the SCR

Column

  • C0010c

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

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

Show the formulaShow

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

if ({t: IR.01.02.01.01, r: R0130, c: C0010} = $[s2c_AP:x1] or {t: IR.01.02.01.01, r: R0130, c: C0010} = $[s2c_AP:x2]) then {t: IRR.25.04.01.01, r: R0460, c: C0010, z: Z0001, filter: [s2c_dim:PO] = [s2c_PU:x60]} = sum({t: IRR.25.05.01.01, c: C0030, z: Z0001, filter: [s2c_dim:PO] = [s2c_PU:x60]}) + {t: IRR.25.04.01.01, r: R0436, c: C0010, z: Z0001, filter: [s2c_dim:PO] = [s2c_PU:x60]} else true()

Every Solvency UK rule on IRR.25.04

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.