GRA · Financial Regulation Nexus
Spatial financeWhere capital meets hazard, exposure and transition
Cross-border supervision
Large banks, insurers and market infrastructures operate across many jurisdictions, but supervisory and resolution powers stop at national borders. International standards, supervisory colleges, memoranda of understanding and peer review try to close that gap. This page explains how cross-border gaps and arbitrage develop, why home and host authorities can pull in different directions, which records show the state of cooperation, and who decides how far authorities defer to each other.
How the work runs.
Supervisory review console
Cross-border supervision · Bank supervision · Cycle 1
Firms by risk rating
| Bank B | High | 3 | 4 | Enhanced |
| Bank D | Medium | 2 | 3 | Standard |
| Insurer Alpha | High | 3 | 3 | Enhanced |
| Fintech F1 | Low | 2 | 2 | Light |
Findings
Climate expectations met
share of firms, thematic review
Fig.Supervisory review console: example names and illustrative values, not a record or a live system.
Cross-border supervision: how the risk develops.
International standards and cooperation. The dossier below sets out how the risk develops, what is measured, where the data come from, how it is modelled and who decides.
Home and host incentives diverge
A home supervisor looks at the whole group; a host supervisor looks at the local entity and its depositors. In calm times they cooperate, in stress each may ring-fence assets and liquidity, which can deepen the group's problem.
Information does not travel
Confidentiality laws, differing formats and slow processes limit what one authority can share with another. Risks that span entities in several countries can go unseen by each authority alone.
Booking models exploit borders
Firms can book activity where rules, taxes or supervision are lightest while serving clients elsewhere. Branches, back-to-back trades and remote booking move risk away from the authority that sees the client.
Standards rest on national will
International standard setters have no enforcement power. Implementation depends on peer pressure, market discipline and conditionality in IMF programmes, so gaps can persist for years.
Settlement dependencies, and what fails with a node.
How a failure at one financial centre can spread through settlement links. Design links, not real dependencies.
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.
| Indicator | Unit | Cadence | Source type | Label |
|---|---|---|---|---|
| Signatories to the IOSCO multilateral MoU | count and status of signatories | as updated | IOSCO signatory list | Published statistics |
| Crisis management groups for systemic firms | presence per global systemically important firm | annual | FSB resolution reporting | Published statistics |
| Cross-border bank claims | currency amount by counterparty country | quarterly | BIS locational and consolidated banking statistics | Published statistics |
| Equivalence and deference decisions | count by framework and third country | as adopted | Equivalence decision records | Published statistics |
| FSB peer review recommendations followed up | status per recommendation | per review | FSB peer reviews | Published statistics |
| FATF effectiveness ratings on international cooperation | rating per immediate outcome | per evaluation | FATF mutual evaluation reports | Published statistics |
| Supervisory colleges established | presence per cross-border group | annual | Authority annual reports | REPORTED |
Trace a shock in cross-border supervision to the balance sheet.
Assembled from the Nexus Standards area profile Central banks and financial supervisors: the shocks it names, the systems and sectors that carry the loss, the controls that dampen it and the data that observe it. Pick an initiating shock and step through the cascade to see which exposures it reaches and where losses could concentrate. The Map view places the run on an example geography with open data. Every weight is a stated assumption. An exercise, not a forecast, a valuation, a rating or investment advice. To model a place of your own choosing, open the full System Builder.
Hazards
- Tropical cyclone
- Earthquake
- Ice-jam flood
- Wildfire
- Storm surge (set off downstream)
- Intense rainfall (set off downstream)
- River flood (set off downstream)
- Flash flood (set off downstream)
- Dangerous surf (set off downstream)
- Widespread power outage (set off downstream)
- Mass displacement (set off downstream)
- Coastal flood (set off downstream)
- Aftershock sequence (set off downstream)
- Fault surface rupture (set off downstream)
- Soil liquefaction (set off downstream)
- Slope slide (set off downstream)
- Rockfall (set off downstream)
- Tsunami (set off downstream)
Systems and couplings
- Central banks and financial supervisors
- Banking Coupling
- Insurance and reinsurance Coupling
- Asset owners and asset management Coupling
- Financial and economic risk standards Coupling
Controls
NS-0Constitution and principlesNS-3Risk record UNIs (grammar, legacy crosswalk, allocation authority)NS-9Contextual UNIs (deployments, instances, programme instances)NS-10Policies and clauses (machine-readable obligations: definition, binding, evaluation and enforcement)NS-11Verification and monitoring (evidence, attestations, zero-trust conformance observation)NS-14Conformance and crosswalk to external standardsNRS-H113Hazard family: Financial-system fragility (NHS-1 soc.financial-system)NRS-H59Hazard family: Economic shocks and governance failure (NHS-1 soc.economic)NRS-H62Hazard family: Compound and multi-hazard events (NHS-1 sys.compound)NRS-C5Scenarios and stress testingNRS-H94Hazard family: Systemic cyber events (NHS-1 cyber.systemic-cyber)NRS-H118Hazard family: Organised crime and illicit economies (NHS-1 soc.crime)
Observation
- IMF data services (IFS, FSI, WEO, GFS) (listed for reference)
- BIS statistics (banking, credit, debt securities, property prices) (listed for reference)
- ECB Data Portal (listed for reference)
- NGFS Scenario Explorer (listed for reference)
- Bank nonperforming loans to total gross loans (%)
- Bank capital to assets ratio (%)
- Macroeconomic Dashboard
Example geography
- Western Europe: 152 hexagonal cells
- Rain rate, last half hour (IMERG), NASA GIBS
- Night lights tonight, outages (VIIRS Day/Night Band), NASA GIBS
- Surface water through cloud, 30 m (OPERA DSWx-S1 radar), NASA GIBS
- Carbon monoxide, smoke transport (AIRS), NASA GIBS
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.
| Source | What it gives | Licence class |
|---|---|---|
| BIS locational and consolidated banking statistics | Cross-border claims and liabilities of internationally active banks | Public, BIS terms of use with attribution |
| IOSCO multilateral MoU signatory list | Securities regulators committed to enforcement cooperation and information exchange | Public, terms per IOSCO |
| FSB peer reviews and annual implementation report | Country and thematic peer reviews and the status of G20 reforms | Public, terms per FSB |
| FATF mutual evaluation reports and consolidated ratings | Technical compliance and effectiveness ratings, including international cooperation | Public, terms per FATF |
| European Commission equivalence decisions | Third-country equivalence decisions under EU financial law | Public, EU reuse policy with attribution |
| IMF Financial Sector Assessment Program reports | Assessments of cross-border cooperation and home-host arrangements | Public, IMF copyright and terms |
What cross-border supervision means for exposure, loss and capital.
The exposure, loss, scenario and capital views a risk officer, supervisor or ministry of finance would ask for, with the frameworks they report against. Structures follow supervisory and actuarial practice. Values are illustrative: never prices, ratings or advice.
Disclosure crosswalk
Where evidence on cross-border supervision fits the disclosure and prudential frameworks institutions report against.
| Pillar | TCFD | ISSB IFRS S2 | Prudential (BCBS, IAIS) | Evidence this page can hold |
|---|---|---|---|---|
| Governance | Board oversight of climate-related risks | Governance requirements | Governance and risk appetite principles | Who owns the risk and how it is escalated |
| Strategy | Risks, opportunities and resilience | Scenario analysis and resilience | Strategy and business model principles | Scenario design and transmission paths |
| Risk management | Identify, assess, manage | Risk management processes | Internal control and ICAAP or ORSA | Exposure maps and loss views |
| Metrics and targets | Metrics used and targets set | Cross-industry and industry metrics | Data, metrics and reporting principles | Indicator definitions and units |
Who decides, and what the evidence serves.
Financial Regulation Nexus prepares evidence. The decisions below are taken by the authorities named, under their own rules, and never by the platform.
| Who decides | The question | Evidence this page serves |
|---|---|---|
| Financial Stability Board and international standard setters | Where cooperation arrangements need strengthening and how implementation is monitored | Peer review outcomes and documented gaps in cooperation |
| Home and host supervisors | What information to share and how to coordinate supervision and crisis action | College practice, MoU coverage and case histories of cooperation in stress |
| Legislatures and the European Commission | Whether to grant equivalence, require subsidiaries or allow branches | Comparative branch and equivalence regimes and their effects |
| G20 leaders and finance ministers | Which reforms to mandate and review | Implementation reports and peer reviews |
Outputs this topic produces
- Maps of cooperation agreements, colleges and crisis management groups
- Comparative briefs on equivalence, deference and branch regimes
- Supervisory learning material on home-host cooperation in stress
- Guides to cross-border banking statistics and their gaps
What experts ask.
Cross-border supervision researchers ask how national authorities oversee international activity.
- How are international standards developed, and how consistently are they implemented?
- How do home and host supervisors share information and coordinate on cross-border groups?
- What causes regulatory fragmentation, and what are its costs and benefits?
- How are cross-border resolution and crisis management coordinated?
- How do differences in rules create arbitrage opportunities?
Global institutions, national authority.
International standard setters develop standards through consensus among member authorities, but standards have no legal force until adopted nationally. Implementation varies in timing and detail. Cross-border groups are supervised by home authorities for the group and host authorities for local entities, coordinated through colleges and cooperation agreements.
Information sharing between authorities is a precondition for effective oversight of cross-border groups, but it is limited by confidentiality law, differing legal frameworks and trust. Memoranda of understanding and colleges help, yet authorities may still see only part of a group's risk.
In a crisis, national authorities face pressure to protect domestic depositors and taxpayers, which can lead to ring-fencing of assets and capital. Fragmentation can increase resilience locally while reducing efficiency and creating trapped liquidity. Balancing cooperation and national interest is a recurring theme.
How the evidence is built, and where it stops.
- 01
Implementation monitoring
Comparing national adoption of standards using policy and institutional science. Assessments may lag.
- 02
Game-theoretic analysis
Modelling incentives for cooperation with game theory and mechanism design. Simplifies real behaviour.
- 03
Case studies
Studying cross-border failures and resolutions. Few cases exist.
- 04
Legal analysis
Comparing cooperation agreements. Many are confidential.
How it is studied, and what the methods cannot say.
- 01Game theory and mechanism designHome-host cooperation in resolution · Regulatory competition between jurisdictionsApplied here
- 02Policy, institutional and decision scienceRegulatory impact assessment · Comparing supervisory architecturesApplied here
- 03Financial economics and macro-financeCosts and benefits of capital requirements · Tracing leakage of macroprudential measuresApplied here
- 04Data engineering, interoperability and stewardshipMapping templates to a common model · Entity resolution with identifiersApplied here
Questions and answers.
What is a supervisory college?
What does equivalence mean?
Why do host authorities ring-fence?
Are international standards binding?
Does the platform take part in standard setting?
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