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

Operational risk: part 4 - business indicator and subcomponents (OPR): values must agree (OF16.00.01.04, SC16.00.01.04, Bank of England check boe_b0794)

A warning on the operational risk: part 4 - business indicator and subcomponents (OPR) (OF16.00.01.04) and operational risk: part 4 - business indicator and subcomponents (OPR) (SC16.00.01.04) templates, in the own funds (PRA001) and own funds for SDDTs (PRA116) returns.

Line4 Check runs it on the own funds (PRA001) and own funds for SDDTs (PRA116) returns, proven on test files, check by check: the same outcome on all six test files of those returns.

Check your file for this rule

The rule in plain words

c:0040 Average amount represents the average value over the last three periods (T, T-1, T-2) with the positive or negative annual amounts treated as Absolute values in this calculation

In each of 10 rows (listed below) of Operational risk: part 4 - business indicator and subcomponents (OPR) (OF16.00.01.04): "Average amount" (column 0040) must equal the size of "T-2" (column 0010) (ignoring its sign) plus the size of "T-1" (column 0020) (ignoring its sign) plus the size of "T" (column 0030) (ignoring its sign) divided by 3.

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.

This is a warning. It does not stop the return on its own, but your supervisor may ask you to explain it. It runs only when your filing indicators mark OF16.00.01.04 as reported.

The cells it reads

Operational risk: part 4 - business indicator and subcomponents (OPR) (OF16.00.01.04)

Rows

  • R0030Reduction in BI due to PRA-approved excluded divested activities
  • R0050Absolute value of interest income minus interest expense
  • R0120Interest earning assets
  • R0210Dividend income
  • R0230Fee and commission income
  • R0240Fee and commission expense
  • R0250Other operating income
  • R0290Other operating expense
  • R0360Net profit (loss) on trading book
  • R0370Net profit (loss) on banking book

Columns

  • C0010T-2
  • C0020T-1
  • C0030T
  • C0040Average amount

Operational risk: part 4 - business indicator and subcomponents (OPR) (SC16.00.01.04)

Rows

  • R0030Reduction in BI due to PRA-approved excluded divested activities
  • R0050Absolute value of interest income minus interest expense
  • R0120Interest earning assets
  • R0210Dividend income
  • R0230Fee and commission income
  • R0240Fee and commission expense
  • R0250Other operating income
  • R0290Other operating expense
  • R0360Net profit (loss) on trading book
  • R0370Net profit (loss) on banking book

Columns

  • C0010T-2
  • C0020T-1
  • C0030T
  • C0040Average amount

Which returns it applies to

Line4 Check runs it on the own funds (PRA001) and own funds for SDDTs (PRA116) returns on Bank of England banking taxonomy 4.1.1. The Bank of England applies it to own funds for SDDTs (PRA116) and own funds (PRA001) returns, as a warning.

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: OF16.00.01.04, c: 0040} = (abs({t: OF16.00.01.04, c: 0010}) + abs({t: OF16.00.01.04, c: 0020}) + abs({t: OF16.00.01.04, c: 0030})) / 3

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

scope({t: OF16.00.01.04, r:0030;0050;0120;0210;0230;0240;0250;0290;0360;0370, f: banking, fv: banking_reporting})

Every PRA banking rule on OF16.00.01.04

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.