2 min readBlockingBank of England taxonomy 2.2.0Updated 11 November 2026

Own funds: a total must equal the sum of its parts (IR.23.01, Bank of England rule IR_bv2035)

A blocking check on the own funds template (IR.23.01), in the quarterly solo (QRS) and annual solo (ARS) returns.

The rule in plain words

The item "Tier 2" value of the "Total basic own funds after deductions" reported in Own funds (IR.23.01.01.01) should be equal to the sum of the items reported above

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 table below and find the cells the rule reads.
  2. 02Add up the parts in your return and compare the result with the total.
  3. 03If they differ, a part is missing, a value sits in the wrong cell, or the total is out of date.
  4. 04The Bank of England allows a small rounding difference, worked out from the decimals each value is reported with.
  5. 05It runs only when your filing indicators mark IR.23.01 as reported.
  6. 06This 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.23.01.01.01)

Rows

  • R0010Ordinary share capital (gross of own shares)
  • R0030Share premium account related to ordinary share capital
  • R0040Initial funds, members' contributions or the equivalent basic own - fund item for mutual and mutual-type undertakings
  • R0050Subordinated mutual member accounts
  • R0090Preference shares
  • R0110Share premium account related to preference shares
  • R0140Equity- and liability-accounted subordinated instruments
  • R0180Other own fund items approved by the supervisory authority as basic own funds not specified above
  • R0290Total basic own funds

Column

  • C0040Tier 2

A worked example

With simple numbers.

Illustrative values
Ordinary share capital (gross of own shares)1,200
Share premium account related to ordinary share capital800
Initial funds, members' contributions or the equivalent basic own - fund item for mutual and mutual-type undertakings450
Subordinated mutual member accounts300
Preference shares150
Share premium account related to preference shares100
Equity- and liability-accounted subordinated instruments60
Other own fund items approved by the supervisory authority as basic own funds not specified above40
Together3,100
What the rule then expects

Total basic own funds must then be 3,100.

3,100Passes
3,200Fails

A file that reports 3,100 passes. One that reports 3,200 fails, by 100.

The numbers are illustrative, reported to the unit, so the rounding tolerance does not change the result.

Which returns it applies to

Line4 Check runs it on quarterly solo (QRS) and annual solo (ARS) returns on Bank of England taxonomy 2.2.0. The Bank of England applies it to quarterly solo (QRS) and 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 "Tier 2" value of the "Total basic own funds after deductions" reported in IR.23.01.01.01 - Own funds should be equal to the sum of the items reported above.
Show the formulaShow

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

{t: IR.23.01.01.01, r: R0290, c: C0040, z: Z0001} = {t: IR.23.01.01.01, r: R0010, c: C0040, z: Z0001} + {t: IR.23.01.01.01, r: R0030, c: C0040, z: Z0001} + {t: IR.23.01.01.01, r: R0040, c: C0040, z: Z0001} + {t: IR.23.01.01.01, r: R0050, c: C0040, z: Z0001} + {t: IR.23.01.01.01, r: R0090, c: C0040, z: Z0001} + {t: IR.23.01.01.01, r: R0110, c: C0040, z: Z0001} + {t: IR.23.01.01.01, r: R0140, c: C0040, z: Z0001} + {t: IR.23.01.01.01, r: R0180, c: C0040, 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.