1 min readBlockingBank of England taxonomy 2.2.0Updated 11 November 2026

Own funds and detailed information by tiers on own funds: two values must match (IR.23.01, IR.23.02, Bank of England rule IR_bv0490_02)

A blocking check on the own funds (IR.23.01) and detailed information by tiers on own funds (IR.23.02) templates, in the annual group (ARG) return.

The rule in plain words

The item "Total Tier 1" value of "Total ordinary share capital" reported in template Detailed information by tiers on own funds (IR.23.02) should be equal to the "Total Tier 1 - unrestricted" value of "Ordinary share capital (gross of own shares)" reported in template Own funds (IR.23.01)

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 two values must be the same. Find which of the two is right, and correct the other one.
  3. 03It runs only when your filing indicators mark IR.23.01 and IR.23.02 as reported.
  4. 04This is a blocking check. A return that fails it is normally rejected, so fix it before you submit.

The cells it reads

Own funds (IR.23.01.04.01)

Row

  • R0010Ordinary share capital (gross of own shares)

Column

  • C0020Tier 1 - unrestricted

Detailed information by tiers on own funds: basic own funds (IR.23.02.04.01)

Row

  • R0100Total ordinary share capital

Column

  • C0020Tier 1

A worked example

With simple numbers.

Illustrative values
Ordinary share capital (gross of own shares), Tier 1 - unrestricted1,200
What the rule then expects

Total ordinary share capital, Tier 1 must then be 1,200.

1,200Passes
1,300Fails

A file that reports 1,200 passes. One that reports 1,300 fails, by 100.

The numbers are illustrative.

Which returns it applies to

Line4 Check runs it on annual group (ARG) return on Bank of England taxonomy 2.2.0. The Bank of England applies it to annual group (ARG) 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 "Total Tier 1" value of "Total ordinary share capital" reported in template IR.23.02 - Detailed information by tiers on own funds should be equal to the "Total Tier 1 - unrestricted" value of "Ordinary share capital (gross of own shares)" reported in template IR.23.01 - Own funds.
Show the formulaShow

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

{t: IR.23.02.04.01, r: R0100, c: C0020, z: Z0001} = {t: IR.23.01.04.01, r: R0010, c: C0020, z: Z0001}

Every Solvency UK rule on IR.23.01

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.