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

Off balance sheet exposure value should be equal to or smaller than the overall exposure value (OF08.01.01.02, OF08.01.01.01, Bank of England check boe_b0368_3)

A blocking check on the credit and counterparty credit risks and free deliveries: IRB approach to capital requirements (CR IRB 1) - Of which arising from counterparty credit risk and off balance sheet (OF08.01.01.02) and credit and counterparty credit risks and free deliveries: IRB approach to capital requirements (CR IRB 1) (OF08.01.01.01) 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.

The rule in plain words

off balance sheet exposure value should be equal to or smaller than the overall exposure value

In Credit and counterparty credit risks and free deliveries: IRB approach to capital requirements (CR IRB 1) - Of which arising from counterparty credit risk and off balance sheet (OF08.01.01.02): "Specialised lending slotting approach: total" in column "Of which: off balance sheet items" (row 0080, column 0120) must not be more than "Specialised lending slotting approach: Total" in column "Exposure value" (row 0080, column 0110) in Credit and counterparty credit risks and free deliveries: IRB approach to capital requirements (CR IRB 1) (OF08.01.01.01).

What to do if your return fails it

  1. 01Open the tables below and find the cells the rule reads.
  2. 02Compare the values in your return. If the first is bigger than it may be, one of them is wrong: check both before you change either.
  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 OF08.01.01 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

Credit and counterparty credit risks and free deliveries: IRB approach to capital requirements (CR IRB 1) (OF08.01.01.01)

Row

  • R0080Specialised lending slotting approach: Total

Column

  • C0110Exposure value

Sheet

  • S0002Total (FIRB approach and slotting approach)

Credit and counterparty credit risks and free deliveries: IRB approach to capital requirements (CR IRB 1) - Of which arising from counterparty credit risk and off balance sheet (OF08.01.01.02)

Row

  • R0080Specialised lending slotting approach: total

Column

  • C0120Of which: off balance sheet items

Sheet

  • S0002Total (FIRB approach and slotting 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: OF08.01.01.02, r: 0080, c: 0120} <= {t: OF08.01.01.01, r: 0080, c: 0110}

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

scope({t: OF08.01.01.02, z:0002, f: banking, fv: banking_reporting},{t: OF08.01.01.01, z:0002, f: banking, fv: banking_reporting})

Every PRA banking rule on OF08.01.01.02

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.