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

MREL Resources - accounting value: all the accounting values shall be greater than or equal to zero (MR02.01.01.02, Bank of England check boe_b4006_2)

A blocking check on the MREL Resources - accounting value template (MR02.01.01.02), in the MREL resources (MRL001) return.

Line4 Check runs it on the MREL resources (MRL001) return, proven on test files, check by check: the same outcome on all eight test files of that return.

Check your file for this ruleWhat to do if it fails

The rule in plain words

All the accounting values shall be greater than or equal to zero

In MREL Resources - accounting value (MR02.01.01.02): every value in 17 rows (listed below) in 7 columns (listed below) must be zero or more.

What to do if your return fails it

  1. 01Open the table below and find the cells the rule reads.
  2. 02Look for a value below zero in these cells, such as an amount entered as a negative number.
  3. 03It runs only when your filing indicators mark MR02.01.01 as reported.
  4. 04This is a blocking check. A return that fails it is normally rejected, so fix it before you submit.

The cells it reads

MREL Resources - accounting value (MR02.01.01.02)

Rows

  • R005AT1 capital instruments that qualify to count towards MREL
  • R030Tier 2 capital instruments that qualify to count towards MREL
  • R050MREL contractually or statutorily subordinated eligible liabilities (senior non-preferred)
  • R060MREL senior unsecured eligible liabilities (holding company issued senior)
  • R070Liabilities that do not qualify for MREL but which rank pari passu with any MREL resources
  • R073Liabilities that do not qualify for external MREL, calculated as a proportion of external MREL resources where the ratio exceeds 2.5%
  • R075Liabilities that do not qualify for internal MREL, calculated as a proportion of internal MREL resources where the ratio exceeds 2.5%
  • R080Total MREL resources
  • R085Shares that do not qualify for CET1
  • R090For multiple point of entry (MPE) resolution groups only: exposures to other resolution groups or entities or sub-groups, that correspond to MREL eligible liabilities instruments
  • R100Institution’s holdings of MREL eligible liabilities instruments issued by the institution itself
  • R110Institution’s holdings of MREL eligible liabilities instruments of other entities with reciprocal cross-holdings
  • R120Institution’s holdings of MREL eligible liabilities instruments of G-SIB entities without significant investment in those entities
  • R130Of which held in the trading book for no longer than 30 business days, without significant investment
  • R140Institution’s holdings of MREL eligible liabilities instruments of G-SIB entities in which the institution has a significant investment
  • R143Of which held in the trading book for no longer than 30 business days, with significant investment
  • R160AT1 capital instruments that do not qualify for MREL

Columns

  • C080Less than one year (accounting value)
  • C090One year and greater, less than two years (accounting value)
  • C100Two years and greater, less than five years (accounting value)
  • C110Five years and greater (accounting value)
  • C120Perpetual (accounting value)
  • C130Calculated amount that does not have maturity (accounting value)
  • C140Current reporting aggregate (accounting value)

Which returns it applies to

Line4 Check runs it on the MREL resources (MRL001) return on Bank of England banking taxonomy 4.1.1. The Bank of England applies it to MREL resources (MRL001) 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: MR02.01.01.02, r: 005; 030; 050; 060; 070; 073; 075; 080; 085; 090; 100; 110; 120; 130; 140; 143; 160, c: 080; 090; 100; 110; 120; 130; 140} >= 0

Every PRA banking rule on MR02.01.01.02

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.