Commission Delegated Regulation (EU) 2023/1578 of 20 April 2023 supplementing Regulation (EU) No 575/2013 of the European Parliament and of the Council with regard to regulatory technical standards specifying the requirements for the internal methodology or external sources used under the internal default risk model for estimating default probabilities and losses given default (Text with EEA relevance)
Commission Delegated Regulation (EU) 2023/1578 of 20 April 2023 supplementing Regulation (EU) No 575/2013 of the European Parliament and of the Council with regard to regulatory technical standards specifying the requirements for the internal methodology or external sources used under the internal default risk model for estimating default probabilities and losses given default (Text with EEA relevance)
Data as of 2026-07-04 · Compiled from an official source version. Later amendments or repeals may not be reflected; the official text prevails. · Read the official text ↗
Requirements for the internal methodology for estimating default probabilities
1. An institution’s internal methodology, or a part of it, used for estimating default probabilities in accordance with Article 325bp(5), point (e), of Regulation (EU) No 575/2013, shall fulfil the same requirements as those that apply to the methodologies used by institutions that have been permitted to estimate default probabilities in accordance with Part Three, Title II, Chapter 3 of that Regulation.
2. By way of derogation from paragraph 1, an institution’s internal methodology, or a part of it, for estimating default probabilities shall fulfil the requirements set out in paragraphs 3 or 4, as applicable, where, for a given issuer, all of the following conditions are met on a quarterly basis:
(a)
no external sources fulfilling the requirements set out in Article 2 are already available for estimating default probabilities for that issuer;
(b)
the use of an internal methodology, or a part of it, fulfilling the requirements set out in paragraph 1 is either:
(i)
not feasible due to a lack of input data for that issuer; or
(ii)
disproportionate in relation to the materiality or the holding period of the relevant positions for that issuer, based on the trading strategy adopted for such positions;
(c)
the value of ‘m’, calculated in accordance the formula laid down in paragraph 5, is any of the following:
(i)
lower than or equal to 10 %;
(ii)
higher than 10 %, and the institution carries out all of the following:
(1)
the institution investigates whether additional external sources fulfilling the requirements set out in Article 2 are available and uses those sources to reduce the value of ‘m’ to a value which is lower than or equal to 10 %;
(2)
the institution conducts a sensitivity and scenario analysis to assess the qualitative and quantitative soundness of the internal methodology or part of it.
For the sensitivity analysis referred to in point (c)(ii)(2), the institution shall assess the sensitivity of the own funds requirements calculated in accordance with Article 325bn(1) of Regulation (EU) No 575/2013 in relation to all trading book positions referred to in Article 325bl of that Regulation. The institution shall do so by assigning to the issuers covered at the time of the calculation by the internal methodology or part of it, which fulfils the requirements set out in paragraphs 3 or 4, as applicable, one rating grade higher than and one rating grade lower than the one used to fulfil the requirements set out in those paragraphs.
3. Where the conditions set out in paragraph 2 are met, an institution’s internal methodology, or a part of it, shall assign to an issuer an estimate of default probability which is equal to or higher than the maximum of the following values:
(a)
the highest default probability assigned to investment grade issuers of positions under the scope of the institution’s internal default risk model and for which the conditions set out in paragraph 2 are not met;
(b)
the equally weighted average of default probabilities assigned to issuers of positions under the scope of the institution’s internal default risk model and for which the conditions set out in paragraph 2 are not met.
For the purposes of point (b), institutions may exclude defaulted issuers when calculating the equally weighted average of default probabilities, where they can ensure that the conditions set out in paragraph 2 are not met for such defaulted issuers.
4. By way of derogation from paragraph 3, where the conditions set out in paragraph 2 are met and the own funds requirements for default risk decrease as the value of default probability assigned to a given issuer increases, an institution’s internal methodology or a part of it shall assign to that issuer an estimate of default probability which is equal to or lower than the value assigned in accordance with paragraph 3, point (b).
5. For the purposes of paragraph 2, point (c), institutions shall calculate the value of ‘m’ in accordance with the following formula:
, where:
DRC(full scope)
=
the own funds requirements calculated in accordance with Article 325bn(1) of Regulation (EU) No 575/2013 on the full scope of the trading book positions referred to in Article 325bl of that Regulation;
DRC(other methodologies and external sources)
=
the own funds requirements calculated in accordance with Article 325bn(1) of Regulation (EU) No 575/2013 relating exclusively to the trading book positions referred to in Article 325bl of that Regulation for the issuers of which the conditions set out in paragraph 2 are not met.
Requirements for external sources for estimating default probabilities
1. When using external sources for estimating default probabilities in accordance with Article 325bp(5), point (e), of Regulation (EU) No 575/2013, institutions shall, in accordance with Articles 325bj(2) and 325bp(7) of that Regulation, validate the estimates of default probabilities on a periodic basis for their use in the internal default risk model.
2. Institutions shall obtain the estimates of default probabilities from external sources by employing a methodology that is conceptually sound and that fulfils the requirements set out in paragraph 4.
3. Institutions that use more than one external source shall establish a hierarchy of those external sources.
4. Before applying the floor referred to in Article 325bp(5), point (a), of Regulation (EU) No 575/2013, institutions shall ensure that the methodology referred to in paragraph 2 of this Article fulfils all of the following requirements:
(a)
the methodology, based on the obligor grade scale used, where that scale could also be continuous, shall provide estimates of default probabilities corresponding to the applicable time horizon referred to in Article 325bp(5), point (b), of Regulation (EU) No 575/2013 that meet all of the following conditions:
(i)
the estimates of default probabilities are considered accurate for all obligor grades having analysed their expected range of estimation errors;
(ii)
the estimates of default probabilities are consistent across obligor grades;
(iii)
the estimates of default probabilities provide a meaningful differentiation of risk and strictly increase as the creditworthiness of the obligor decreases;
(iv)
the values of the estimates of default probabilities are not set to zero for an obligor grade solely on the basis that no defaults have been observed in the past for that obligor grade.
(b)
where the methodology’s estimates of default probabilities are not derived in combination with current market prices, institutions shall analyse any differences they observe between those estimates and estimates that are derived in combination with current market prices, as referred to in Article 325bp(5), point (c), of Regulation (EU) No 575/2013.
Requirements for the internal methodology for estimating losses given default
1. An institution’s internal methodology, or a part of it, used for estimating losses given default in accordance with Article 325bp(6), point (d), of Regulation (EU) No 575/2013 shall fulfil the same requirements as those that apply to the methodologies used by institutions that have been permitted to estimate losses given default in accordance with Part Three, Title II, Chapter 3 of that Regulation.
2. By way of derogation from paragraph 1, an institution’s internal methodology, or a part of it, for estimating losses given default shall fulfil the requirements set out in paragraphs 3 or 4, as applicable, where, in relation to a given position, all of the following conditions are met on a quarterly basis:
(a)
no external sources fulfilling the requirements set out in Article 4 are already available for estimating losses given default for that position;
(b)
the use of an internal methodology, or a part of it, fulfilling the requirements set out in paragraph 1 is either:
(i)
not feasible due to a lack of input data for that position; or
(ii)
disproportionate in relation to the materiality or the holding period of that position, based on the trading strategy adopted for that position;
(c)
the value of ‘m’, calculated in accordance with the formula laid down in paragraph 5, is any of the following:
(i)
lower than or equal to 10 %;
(ii)
higher than 10 %, and the institution investigates whether additional external sources fulfilling the requirements set out in Article 4 are available and uses those sources to reduce the value of ‘m’ to a value which is lower than or equal to 10 %.
3. Where the conditions set out in paragraph 2 are met, an institution’s internal methodology, or a part of it, shall assign to a position an estimate of loss given default which is equal to or higher than the following:
(a)
75 % for subordinated debt positions;
(b)
45 % for senior unsecured debt positions;
(c)
11,25 % for covered bond positions;
(d)
25 % for any other positions.
4. By way of derogation from paragraph 3, where the conditions set out in paragraph 2 are met and the own funds requirements for default risk decrease as the value of loss given default assigned to a given position increases, an institution’s internal methodology, or a part of it, shall assign to that position an estimate of loss given default which is equal to or lower than the values set out in paragraph 3.
5. For the purposes of paragraph 2, point (c), institutions shall calculate the value of ‘m’ in accordance with the formula set out in Article 1(5), where the term DRC (other methodologies and external sources) represents the own funds requirements calculated in accordance with Article 325bn(1) of Regulation (EU) No 575/2013 relating exclusively to the trading book positions referred to in Article 325bl of that Regulation for which the conditions set out in paragraph 2 are not met.
Requirements for external sources for estimating losses given default
1. When using external sources for estimating losses given default in accordance with Article 325bp(6), point (d), of Regulation (EU) No 575/2013, institutions shall, in accordance with Articles 325bj(2) and 325bp(7) of that Regulation, validate the estimates of losses given default on a periodic basis for their use in the internal default risk model.
2. Institutions that use more than one external source shall establish a hierarchy of those external sources.
1. Institutions whose internal methodology, or a part of it, meets the conditions set out in Article 1(2) or Article 3(2), shall, in relation to all the issuers and positions covered under those Articles, document all of the following:
(a)
that no external sources fulfilling the requirements set out in Article 2 or in Article 4, as applicable, are available for estimating default probabilities for those issuers and losses given default for those positions, respectively;
(b)
that the use of an internal methodology fulfilling the requirements set out in Article 1(1) for estimating default probabilities for those issuers, or in Article 3(1) for estimating losses given default for those positions, respectively, would not be feasible due to a lack of input data, or that it would be disproportionate in relation to the materiality or the holding period in line with the trading strategy adopted for those issuers or positions;
(c)
the values of ‘m’, calculated in accordance with the formulae laid down in Article 1(5) and Article 3(5).
2. Institutions shall keep an up-to-date inventory of the external data sources used for the purposes of Articles 2 and 4, which shall contain all of the following:
(a)
a description of the methodologies used to obtain estimates of default probabilities from external sources in accordance with Article 2(1) and Article 2(2);
(b)
documentation and underlying rationale where an institution has identified different terms, information or assumptions in accounting for expected credit losses and the estimates of default probabilities from external sources for exposures under the internal default risk model for the purpose of ensuring sound credit risk management, as approved by senior management;
(c)
a description of the methodologies used to obtain estimates of losses given default from external sources in accordance with Article 4(1);
(d)
the results of the validation performed in accordance with Article 2(1) and Article 4(1);
(e)
the hierarchy of the external sources used, in accordance with Article 2(3) and Article 4(2).
For the purposes of point (a), where the estimates of default probabilities differ from those used in the institutions’ internal risk management methodologies and those differences are not due to the requirements set out in Article 325bp(5) of Regulation (EU) No 575/2013, those differences shall be part of the description of the methodologies.
For the purposes of point (c), where the estimates of losses given default differ from those used in the institutions’ internal risk management methodologies and those differences are not due to the requirements set out in Article 325bp(6) of Regulation (EU) No 575/2013, those differences shall be part of the description of the methodologies.
