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

Operational risk: part 4 - business indicator and subcomponents (OPR): a total must equal the sum of its parts (OF16.00.01.04, SC16.00.01.04, Bank of England check boe_b0479)

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.

The rule in plain words

This represents Total Other Operating expenses, including increases in provisions and reserves for operational loss events and Losses from non-current Assets held for sale, excluding Operating Leases (other than investment property) and deducting any unused operational loss provisions/reserves

In each of "T-2" (column 0010), "T-1" (column 0020) and "T" (column 0030) of Operational risk: part 4 - business indicator and subcomponents (OPR) (OF16.00.01.04): "Other operating expense" (row 0290) must equal "Other operating expense" (row 0300) minus "Operating leases other than investment property" (row 0310) plus "Expenses related to establishing provisions/reserves for operational loss events: new additions including increases in existing provisions" (row 0320) minus "Expenses related to establishing provisions/reserves for operational loss events: unused amounts reversed during the period" (row 0330) plus "Losses from non-current assets and disposal groups classified as held for sale not qualifying as discontinued operations" (row 0340).

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 tables 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  3. 03If they differ, a part is missing, a value sits in the wrong cell, or the total is out of date.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 OF16.00.01.04 as reported.
  6. 06This is a warning. It does not stop the return on its own, but your supervisor may ask you to explain it.

The cells it reads

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

Rows

  • R0290Other operating expense
  • R0300Other operating expense
  • R0310Operating leases other than investment property
  • R0320Expenses related to establishing provisions/reserves for operational loss events: new additions including increases in existing provisions
  • R0330Expenses related to establishing provisions/reserves for operational loss events: unused amounts reversed during the period
  • R0340Losses from non-current assets and disposal groups classified as held for sale not qualifying as discontinued operations

Columns

  • C0010T-2
  • C0020T-1
  • C0030T

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

Rows

  • R0290Other operating expense
  • R0300Other operating expense
  • R0310Operating leases other than investment property
  • R0320Expenses related to establishing provisions/reserves for operational loss events: new additions including increases in existing provisions
  • R0330Expenses related to establishing provisions/reserves for operational loss events: unused amounts reversed during the period
  • R0340Losses from non-current assets and disposal groups classified as held for sale not qualifying as discontinued operations

Columns

  • C0010T-2
  • C0020T-1
  • C0030T

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, r: 0290} = {t: OF16.00.01.04, r: 0300} - {t: OF16.00.01.04, r: 0310} + {t: OF16.00.01.04, r: 0320} - {t: OF16.00.01.04, r: 0330} + {t: OF16.00.01.04, r: 0340}

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

scope({t: OF16.00.01.04, c:0010;0020;0030, 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.