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

Total credit risk RWAs under standardised approaches should reflect the sum of SA on the SA, and IRB exposures on the SA (OF02.00.01.01, OF02.01.01.03, OF02.01.01.02 and others, Bank of England check boe_b0793)

A blocking check on the own funds requirements (CA2) (OF02.00.01.01), output floor - Total RWA (OFL) (OF02.01.01.03), output floor - RWA for Standardised approaches (OFL) (OF02.01.01.02) and operational risk: part 2 - minimum required capital (OPR) (OF16.00.01.02) templates, 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 credit risk RWAs under standardised approaches should reflect the sum of SA on the SA, and IRB exposures on the SA

In Own funds requirements (CA2) (OF02.00.01.01): if "Total risk exposure amount" in column "Output Floor" (row 0010, column 0030) is reported, "Total risk exposure amount" in column "Output Floor" (row 0010, column 0030) must equal the sum of 10 cells (listed below) multiplied by "Output floor multiplier" in column "Output Floor" (row 0035, column 0030).

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 OF02.00.01 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

Own funds requirements (CA2) (OF02.00.01.01)

Rows

  • R0010Total risk exposure amount
  • R0035Output floor multiplier
  • R0036Output floor adjustment (OF-ADJ)
  • R0040Risk weighted exposure amounts for credit, counterparty credit and dilution risks and free deliveries
  • R0490Total risk exposure amount for settlement/delivery
  • R0520Total risk exposure amount for position, foreign exchange and commodities risks
  • R0590Total risk exposure amount for operational risk (OpR)
  • R0630Additional risk exposure amount due to fixed overheads
  • R0640Total risk exposure amount for credit valuation adjustment
  • R0680Total risk exposure amount related to large exposures in the trading book
  • R0690Other risk exposure amounts
  • R5898Total risk exposure amount for capital charge due to switching positions between trading and non-trading book

Columns

  • C0010All approaches
  • C0020Standardised approaches only (Output Floor)
  • C0030Output Floor

Output floor - RWA for Standardised approaches (OFL) (OF02.01.01.02)

Row

  • R0060Operational risk

Column

  • C0020RWA for portfolios on standardised approaches

Output floor - Total RWA (OFL) (OF02.01.01.03)

Row

  • R0050Market risk

Column

  • C0040Standardised total RWA (S-TREA)

Operational risk: part 2 - minimum required capital (OPR) (OF16.00.01.02)

Row

  • R0020Operational risk RWAs

Column

  • C0010Internal Loss Multiplier (ILM)=1

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}.

if not(isNull({t: OF02.00.01.01, r: 0010, c: 0030})) then {t: OF02.00.01.01, r: 0010, c: 0030} = ({t: OF02.00.01.01, r: 0036, c: 0030} + {t: OF02.00.01.01, r: 0040, c: 0020} + {t: OF02.00.01.01, r: 0490, c: 0010} + {t: OF02.00.01.01, r: 0520, c: 0020} + {t: OF02.00.01.01, r: 5898, c: 0010} + {t: OF02.00.01.01, r: 0590, c: 0010} + {t: OF02.00.01.01, r: 0630, c: 0010} + {t: OF02.00.01.01, r: 0640, c: 0020} + {t: OF02.00.01.01, r: 0680, c: 0020} + {t: OF02.00.01.01, r: 0690, c: 0020}) * {t: OF02.00.01.01, r: 0035, c: 0030} else true()

Every PRA banking rule on OF02.00.01.01

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.