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2 min readBlockingBank of England banking taxonomy 4.1.1Updated 11 November 2026

Total risk-weighted exposure amount on SA and IRB (OF08.07.01.01, Bank of England check boe_b1045)

A blocking check on the credit risk and free deliveries: IRB approach to capital requirements: scope of use of IRB and SA approaches (CR IRB 7) template (OF08.07.01.01), in the own funds (PRA001) return.

Line4 Check runs it on the own funds (PRA001) return, proven on test files, check by check: the same outcome on all three test files of that return.

Check your file for this ruleWhat to do if it fails

The rule in plain words

Total risk-weighted exposure amount on SA and IRB

In each of 9 rows (listed below) of Credit risk and free deliveries: IRB approach to capital requirements: scope of use of IRB and SA approaches (CR IRB 7) (OF08.07.01.01): "Total risk-weighted exposure amount for exposures subject to either the standardised approach or the internal ratings based approach" (column 0060) must equal the sum of 9 columns (listed below).

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  3. 03If they differ, a part is missing, a value sits in the wrong cell, or the total is out of date.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 OF08.07.01 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

Credit risk and free deliveries: IRB approach to capital requirements: scope of use of IRB and SA approaches (CR IRB 7) (OF08.07.01.01)

Rows

  • R0180Exposures to institutions
  • R0190Specialised lending exposures
  • R0200Exposures to purchased receivables within the corporate exposure class
  • R0210Exposures to financial corporates, large corporates and other general corporates
  • R0220Exposures to qualifying revolving retail exposures
  • R0230Retail exposures secured by residential immovable property
  • R0240Exposures to purchased receivables within the retail exposure class
  • R0250Exposures to other retail
  • R0260Total

Columns

  • C0060Total risk-weighted exposure amount for exposures subject to either the standardised approach or the internal ratings based approach
  • C0070Connected counterparties
  • C0080Where the standardised approach does not result in significantly lower capital requirements
  • C0090Where the institution cannot reasonably model the exposures
  • C0100Where the exposures in each roll-out class are immaterial
  • C0110Where the institution cannot reasonably model the exposures
  • C0120Where the exposures are immaterial in aggregate
  • C0130Due to a roll-out plan
  • C0140Other
  • C0150Risk-weighted exposure amount for exposures subject to the IRB approach

Which returns it applies to

Line4 Check runs it on the own funds (PRA001) return on Bank of England banking taxonomy 4.1.1. The Bank of England applies it to own funds (PRA001) returns, as a blocking check.

The Bank’s own words and formula

The first paragraph of the plain words above is the Bank of England’s own, word for word, from its list of validations. The second spells out its formula, with each cell named from its templates.

Show the formulaShow

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

{t: OF08.07.01.01, c: 0060} = sum({t: OF08.07.01.01, c: 0070; 0080; 0090; 0100; 0110; 0120; 0130; 0140; 0150})

Where it applies, in the Bank's words (its scope):

scope({t: OF08.07.01.01, r:0180;0190;0200;0210;0220;0230;0240;0250;0260, f: banking, fv: banking_reporting})

Every PRA banking rule on OF08.07.01.01

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.