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1 min readBlockingBank of England taxonomy 2.2.0Updated 11 November 2026

The item "Total ancillary own funds" for "Tier 3" reported in Own funds should be equal to the sum of the items reported above (IR.23.01, Bank of England rule IR_bv0843)

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

Check your file for this ruleWhat to do if it fails

The rule in plain words

The item "Total ancillary own funds" for "Tier 3" reported in Own funds (IR.23.01.01.01) should be equal to the sum of the items reported above

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  3. 03If they differ, a part is missing, a value sits in the wrong cell, or the total is out of date.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

  • R0320Unpaid and uncalled preference shares callable on demand
  • R0330A legally binding commitment to subscribe and pay for equity- and liability-accounted subordinated instruments on demand
  • R0350Letters of credit and guarantees other
  • R0370Supplementary members calls - other
  • R0390Other ancillary own funds
  • R0400Total ancillary own funds

Column

  • C0050Tier 3

A worked example

With simple numbers.

Illustrative values
Unpaid and uncalled preference shares callable on demand1,200
A legally binding commitment to subscribe and pay for equity- and liability-accounted subordinated instruments on demand800
Letters of credit and guarantees other450
Supplementary members calls - other300
Other ancillary own funds150
Together2,900
What the rule then expects

Total ancillary own funds must then be 2,900.

2,900Passes
3,000Fails

A file that reports 2,900 passes. One that reports 3,000 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 "Total ancillary own funds" for "Tier 3" 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: R0400, c: C0050, z: Z0001} = {t: IR.23.01.01.01, r: R0320, c: C0050, z: Z0001} + {t: IR.23.01.01.01, r: R0330, c: C0050, z: Z0001} + {t: IR.23.01.01.01, r: R0350, c: C0050, z: Z0001} + {t: IR.23.01.01.01, r: R0370, c: C0050, z: Z0001} + {t: IR.23.01.01.01, r: R0390, c: C0050, 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.