Version status: Amended | Document consolidation status: Updated to reflect all known changes
Version date: 27 June 2019 - 27 June 2021
  Version 5 of 6  

Article 403 Substitution approach

1. Where an exposure to a client is guaranteed by a third party, or secured by collateral issued by a third party, an institution may:

(a) treat the portion of the exposure which is guaranteed as having been incurred to the guarantor rather than to the client provided that the unsecured exposure to the guarantor would be assigned an equal or lower risk weight than a risk weight of the unsecured exposure to the client under Part Three, Title II, Chapter 2;

(b) treat the portion of the exposure collateralised by the market value of recognised collateral as having been incurred to the third party rather than to the client, if the exposure is secured by collateral and provided that the collateralised portion of the exposure would be assigned an equal or lower risk weight than a risk weight of the unsecured exposure to the client under Part Three, Title II, Chapter 2.

The approach referred to in point (b) of the first subparagraph shall not be used by an institution where there is a mismatc