A02 · TOPIC · credit-and-counterparty-riskGRA dossier · service level R0
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Topic dossier · Banking Nexus

Credit and counterparty risk

Credit risk is the chance that a borrower or counterparty fails to pay in full and on time, and it remains the main source of loss for most banks. This page sets out how credit quality deteriorates, how losses concentrate in sectors, regions and single names, and how counterparty exposures in derivatives and securities financing pass stress from one institution to another. It names the measures risk committees and supervisors use and the limits of each.

01In brief

The short answer.

Credit risk is the chance that a borrower or counterparty fails to pay in full and on time, and it is the main source of loss for most banks. Quality erodes before default, losses concentrate in sectors, regions and single names, and counterparty exposure on derivatives moves with markets.

02Spatial finance

A loan book under scenario families.

How physical and transition risk could reach a loan book under different scenarios. Illustrative design values.

A loan book across Europe under physical and transition risk.Design values; NGFS scenario names are labels only, not stress test results.
03Console

Capital and liquidity console, in outline.

The working screen behind this subject: its structure, terms and states. Names are placeholders and values illustrative.

Capital and liquidity console

Credit and counterparty risk · Bank B · Reporting date Q3

All ratios above requirementGRA · Banking Nexus

Capital stack

% of RWA vs requirement and buffers

CET112 pct · req 10.5Tier 112.6 pct · req 12Total capital17 pct · req 14.5Leverage6 pct · req 3.25

Liquidity

% vs minimum

LCR145 pct · req 100NSFR123 pct · req 100Survival horizon59 days · req 30

CET1 ratio walk, stress scenario

Capital and liquidity console: the screen's structure, terms and states for Credit and counterparty risk.Placeholder names and illustrative values; a design, not a record or a live system.
04The question

Credit and counterparty risk: how the risk develops.

Credit quality, concentration and contagion. The dossier below sets out how the risk develops, what is measured, where the data come from, how it is modelled and who decides.

Mechanism

Quality erodes before default

Arrears, covenant breaches, rating downgrades and forbearance usually precede default by several quarters. Under IFRS 9 a significant increase in credit risk moves a loan from a twelve-month to a lifetime loss allowance, so provisions rise before losses are realised.

Mechanism

Losses concentrate

Exposures cluster in sectors, regions, collateral types and large single names. A shock to one segment, such as commercial property or an export industry, can drive losses well beyond what a diversified portfolio model implies.

Mechanism

Counterparty exposure moves with markets

In derivatives and securities financing the amount owed changes with prices. Wrong-way risk arises when exposure grows just as the counterparty weakens, and margin calls in volatile markets can drain liquidity at the same moment.

Mechanism

Defaults propagate

A large counterparty failure imposes losses on creditors, freezes collateral and triggers close-out across many contracts. Uncertainty about who holds the exposure can lead lenders to withdraw from sound institutions as well.

05Key terms

Terms used on this page.

Each term as this page uses it. Where a standard-setting body defines the term, the wording follows that body.

TermDefinition
Non-performing loanA loan ninety days or more past due, or unlikely to be repaid in full without collateral.
IFRS 9 stage 2Loans whose credit risk has increased significantly since origination, provisioned for lifetime expected loss.
Wrong-way riskExposure to a counterparty that rises as the counterparty's credit quality falls.
Loss given defaultThe share of an exposure lost if the borrower defaults, after recoveries.
06Indicators

What is measured, and how well.

Each indicator carries its unit, its cadence, the kind of source behind it and the evidence label a value would carry. No values are shown: a programme supplies them under its own authority.

IndicatorUnitCadenceSource typeLabel
Non-performing loan ratiopercent of gross loansquarterlySupervisory returns, Pillar 3 disclosuresOFFICIAL
Stage 2 and stage 3 loan sharepercent of gross loansquarterlyIFRS 9 financial statementsREPORTED
Coverage ratio of non-performing loanspercent of non-performing loans provisionedquarterlySupervisory returnsOFFICIAL
Probability of default by rating gradepercent over one yearannualInternal ratings-based modelsMODELLED
Loss given defaultpercent of exposure at defaultannualWorkout and recovery dataESTIMATED
Large exposures to single counterpartiespercent of Tier 1 capitalquarterlyLarge exposures reportingOFFICIAL
Sectoral concentration indexHerfindahl index of exposures by sectorquarterlyCredit registers, supervisory returnsESTIMATED
Potential future exposure on derivativescurrency units at a stated confidence leveldailyCounterparty credit risk modelsMODELLED
07Canvas

From sources to decisions.

The topic as a computational graph: named sources feed the methods, an evidence review gates the outputs, and the decisions stay with the authorities that hold them.

Pipeline canvas · Credit and counterparty risk as a run graphDesign, not a record
Credit and counterparty risk: climate scenario analysis pipelineOrderly, disorderly and hot house scenarios supply pathways for carbon prices and macro variables; transition and physical channels change sector and asset outcomes; credit parameters and portfolio losses follow, and results are disclosed with their limits. Design of the process, not a record of a run.

Fig. 02Nodes carry their type, two metric rows and a state; connectors show what feeds what; dashed frames name the owners; the timeline is the cadence. Design of the pipeline, not a record of a run.

08Sources

Where the evidence comes from.

Named public datasets and institutional records, each with its licence class. Sources by agreement are used only under their terms and never republished.

SourceWhat it givesLicence class
IMF Financial Soundness IndicatorsNon-performing loans, provisioning and sectoral loan distribution reported by national authoritiesFree, IMF terms of use
EBA risk dashboard and EU-wide transparency exerciseBank-level asset quality, forbearance and IFRS 9 stage data for EU banksFree, attribution
ECB Supervisory Banking StatisticsAsset quality and credit risk aggregates for significant institutions in the euro areaFree, attribution
FFIEC Call Reports and Federal Reserve FR Y-9CLoan categories, past-due and charge-off data for US banks and holding companiesPublic domain
BIS consolidated banking statisticsBanks' foreign claims by counterparty country and sector on an ultimate-risk basisFree, BIS terms of use
Rating agency default and recovery studiesHistorical default and recovery rates by rating grade and sectorLicensed, subscription
National central credit registersBorrower-level exposures for concentration and interconnection analysisRestricted, supervisory access
09Decisions

Who decides, and what the evidence serves.

Banking Nexus prepares evidence. The decisions below are taken by the authorities named, under their own rules, and never by the platform.

Who decidesThe questionEvidence this page serves
Bank board and board risk committeeWhat credit risk appetite to set, and which sector and single-name limits to imposeConcentration measures, stage migration and stress losses by segment
Chief risk officer and credit committeeWhen to tighten underwriting, raise provisions or reduce exposure to a weakening sectorEarly warning indicators, rating migration and the assumptions of loss models
Prudential supervisorWhether asset quality, provisioning and large exposures warrant supervisory action or a Pillar 2 add-onPeer comparison of non-performing loans, coverage and concentration
Macroprudential authorityWhether a sectoral systemic risk buffer or a borrower-based measure is neededSystem-wide concentration and interconnection measures

Outputs this topic produces

  • Explainers on IFRS 9 staging, provisioning and concentration measures
  • Concentration and contagion maps of sector and counterparty exposures built from public aggregates
  • Comparisons of default and loss modelling approaches with their stated assumptions
  • Sector briefings on emerging credit stress, with evidence labels
10Core questions

Shared questions the industry asks.

  1. 01

    How do shocks become defaults?

    How income loss, collateral damage and refinancing difficulty translate into missed payments and losses.

  2. 02

    Where do exposures concentrate?

    Common exposures to regions, sectors and large borrowers across many lenders.

  3. 03

    How does counterparty failure spread?

    How losses on derivatives, repo and interbank exposures pass between institutions.

  4. 04

    How early can deterioration be seen?

    Which data signal credit migration before it appears in defaults.

11Mechanisms

How the risk arises and transmits.

Credit losses depend on three elements: the likelihood of default, the exposure at default and the loss given default after recovering collateral. Shocks can move all three at once: a disaster raises defaults, draws on credit lines increase exposure and damaged collateral lowers recoveries.

Defaults are correlated. Borrowers in the same region or sector are hit by the same shocks, so portfolio losses are lumpier than models assuming independence suggest. Correlations tend to rise in stress, precisely when diversification is most needed.

Concentration amplifies. Large exposures to a single borrower group, or many banks lending to the same exposed sector, mean that one failure can cause large losses across the system.

Counterparty risk links institutions directly. Margining and central clearing reduce it but create liquidity demands in stress, when collateral must be posted quickly.

Credit cycles have their own dynamics. Lending standards loosen in good times and tighten in bad, amplifying economic swings.

12Methods and limits

How evidence is gathered, and where it stops.

Method or dataWhat it showsIts limit
Loan-level dataBorrower characteristics and performanceConfidential; access limited and aggregated
Credit scoring and rating modelsRelative default likelihoodCalibrated on past conditions
Portfolio modelsLoss distributions and concentrationSensitive to correlation assumptions
Network analysisInterbank and counterparty linkagesExposure data often incomplete
13Methods

How it is studied, and what the methods cannot say.

  1. Financial and risk engineeringExpected credit loss modelling · Counterparty exposure and valuation adjustmentsApplied here
  2. Probability and statisticsEstimating default and loss parameters · Operational loss modellingApplied here
  3. Network science and contagionInterbank and counterparty contagion · Overlapping portfolios and fire salesApplied here
  4. Financial economics and macro-financeMacro-financial stress scenarios · Credit cycle and buffer calibrationApplied here
  5. Artificial intelligence and machine learningCredit decisioning with explainability · Early warning and transaction monitoringApplied here
14Questions

Questions and answers.

What is the difference between credit risk and counterparty risk?
Credit risk is the risk that a borrower fails to repay a loan or bond. Counterparty risk is credit risk on contracts whose value moves with markets, such as derivatives and repos, so the size of the exposure is itself uncertain.
Why do provisions rise before defaults?
IFRS 9 requires a lifetime expected loss allowance once credit risk has increased significantly since origination. Banks recognise deterioration early, using forward-looking information, rather than waiting for a loss event.
What is wrong-way risk?
Exposure to a counterparty that grows as that counterparty's credit quality falls, for example a derivative whose value to the bank rises when the counterparty's own sector is under stress.
Does Banking Nexus assess individual banks or borrowers?
No. It explains the measures, methods and evidence used across the industry. Credit decisions sit with banks, and supervisory judgements sit with the competent authorities.
Does GRA rate borrowers or banks?
No. GRA rates no borrower, bank or security. It researches credit risk mechanisms with aggregated data.
Why do correlations matter so much?
Because losses that occur together are far harder to absorb than the same losses spread over time.
Can banks share loan data through GRA?
Only aggregated data under the competition safeguards, so that no firm, borrower or price is identifiable.
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