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

Credit risk and free deliveries: IRB approach to capital requirements: breakdown by PD ranges (CR IRB 3): sum of PD ranges from 0 to 0.15 (OF08.03.01.01, Bank of England check boe_b0767)

A blocking check on the credit risk and free deliveries: IRB approach to capital requirements: breakdown by PD ranges (CR IRB 3) template (OF08.03.01.01), 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

Sum of PD ranges from 0 to 0.15

In each of 7 columns (listed below) of Credit risk and free deliveries: IRB approach to capital requirements: breakdown by PD ranges (CR IRB 3) (OF08.03.01.01): "0.00 to <0.15" (row 0010) must equal the sum of "0.00 to <0.05" (row 0015), "0.05 to <0.10" (row 0025) and "0.10 to <0.15" (row 0030).

What to do if your return fails it

  1. 01Open the table 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  3. 03If they differ, a part is missing, a value sits in the wrong cell, or the total is out of date.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 OF08.03.01 as reported.
  6. 06This is a blocking check. A return that fails it is normally rejected, so fix it before you submit.

The cells it reads

Credit risk and free deliveries: IRB approach to capital requirements: breakdown by PD ranges (CR IRB 3) (OF08.03.01.01)

Rows

  • R00100.00 to <0.15
  • R00150.00 to <0.05
  • R00250.05 to <0.10
  • R00300.10 to <0.15

Columns

  • C0010On-balance sheet exposures
  • C0020Off-balance-sheet exposures pre-conversion factors
  • C0040Exposure value post conversion factors and post CRM
  • C0060Number of obligors
  • C0090Risk-weighted exposure amount
  • C0100Expected loss amount
  • C0110Value adjustments and provisions

Sheets

  • S0001Total (AIRB approach)
  • S0002Total (FIRB approach and slotting approach)
  • S0006Institutions (FIRB approach)
  • S0009Corporates - Specialised Lending (AIRB approach)
  • S0010Corporates - Specialised Lending (FIRB approach or slotting approach)
  • S0011Corporates - Other general corporates - non-SME (AIRB approach)
  • S0012Corporates - Other general corporates - non-SME (FIRB approach)
  • S0015Retail - Qualifying revolving (AIRB approach)
  • S0016Retail - Other SME (AIRB approach)
  • S0017Retail - Other non-SME (AIRB approach)
  • S0018Retail - Secured by commercial immovable property SME (AIRB approach)
  • S0019Retail - Secured by commercial immovable property non-SME (AIRB approach)
  • S0020Retail - Secured by residential immovable property - SME (AIRB approach)
  • S0021Retail - Secured by residential immovable property non-SME (AIRB approach)
  • S0022Corporates - Financial corporates and large corporates (FIRB approach)
  • S0023Corporates - Other general corporates - SME (AIRB approach)
  • S0024Corporates - Other general corporates - SME (FIRB 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: OF08.03.01.01, r: 0010} = sum({t: OF08.03.01.01, r: 0015; 0025; 0030})

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

scope({t: OF08.03.01.01, c:0010;0020;0040;0060;0090;0100;0110,z:0001;0002;0006;0009;0010;0011;0012;0015;0016;0017;0018;0019;0020;0021;0022;0023;0024, f: banking, fv: banking_reporting})

Every PRA banking rule on OF08.03.01.01

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.