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

"of which: trading book" must not be more than "Fair-valued assets and liabilities" (C32.01.01.01, Bank of England check v6327_m)

A blocking check on the prudent valuation: fair-valued assets and liabilities (PRUVAL 1) template (C32.01.01.01), 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

In each of 19 rows (listed below) of Prudent valuation: fair-valued assets and liabilities (PRUVAL 1) (C32.01.01.01): "of which: trading book" (column 0020) must not be more than "Fair-valued assets and liabilities" (column 0010).

What to do if your return fails it

  1. 01Open the table 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 C32.01.01 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

Prudent valuation: fair-valued assets and liabilities (PRUVAL 1) (C32.01.01.01)

Rows

  • R0010Total fair-valued assets and liabilities
  • R0020Total fair-valued assets
  • R0030Financial assets held for trading
  • R0040Trading financial assets
  • R0050Non-trading financial assets mandatorily at fair value through profit or loss
  • R0060Financial assets designated at fair value through profit or loss
  • R0070Financial assets at fair value through other comprehensive income
  • R0080Non-trading non-derivative financial assets measured at fair value through profit or loss
  • R0090Non-trading non-derivative financial assets measured at fair value to equity
  • R0100Other non-trading non-derivative financial assets
  • R0110Derivatives - hedge accounting
  • R0120Fair value changes of the hedged items in portfolio hedge of interest rate risk
  • R0130Investments in subsidiaries, joint ventures and associates
  • R0150Total fair-valued liabilities
  • R0160Financial liabilities held for trading
  • R0170Trading financial liabilities
  • R0180Financial liabilities designated at fair value through profit or loss
  • R0190Derivatives - hedge accounting
  • R0210Haircuts for trading liabilities at fair value

Columns

  • C0010Fair-valued assets and liabilities
  • C0020of which: trading book

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 plain words above spell out the Bank’s formula, with each cell named from its templates. In the Bank of England’s list of validations, word for word:

v6327_m: [C32.01.01.01 (r0010;0020;0030;0040;0050;0060;0070;0080;0090;0100;0110;0120;0130;0150;0160;0170;0180;0190;0210)] {c0020} <= {c0010}
Show the formulaShow

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

{t: C32.01.01.01, c: 0020} <= {t: C32.01.01.01, c: 0010}

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

scope({t: C32.01.01.01, r:0010;0020;0030;0040;0050;0060;0070;0080;0090;0100;0110;0120;0130;0150;0160;0170;0180;0190;0210, f: banking, fv: banking_reporting})

Every PRA banking rule on C32.01.01.01

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.