The National Layer — Guardians of Proximity
Europe wants its financial system to function increasingly as one market. Yet supervision, enforcement and institutional knowledge remain deeply national. Is that unfinished integration — or part of the architecture Europe actually needs?
GUARDIAN FILE — Europe’s financial architecture does not stop at ESMA, the ECB, EBA or the other institutions built at European level. Beneath them sits another layer: national supervisors, central banks and competent authorities that still interpret rules, inspect institutions, enforce conduct and understand the financial systems closest to them. The question is not simply why so much authority remains national. It is whether Europe knows which responsibilities should remain there.
At first sight, the national layer can look like evidence of unfinished integration. Europe wants deeper capital markets. It wants more cross-border investment. It wants companies to raise capital beyond their home countries and investors to treat European markets increasingly as one financial system.
Yet an asset manager in Amsterdam still encounters the AFM. A financial institution in Germany deals with BaFin. French markets remain embedded in an institutional environment shaped by the AMF and Banque de France. National central banks remain deeply involved in supervision, payments, financial stability and the implementation of European monetary architecture.
Europe therefore appears to be doing two things at once. It is building European authority. And preserving national authority. That may not be a contradiction. Integration does not require every institution to become European. It requires national and European institutions to know where their responsibilities connect.
🟦 If Europe wants one financial system, why does so much authority still remain national?
Financial markets cross borders more easily than economic systems do. Companies operate under national company law. Mortgages are shaped by domestic housing markets. Pension systems differ. Tax structures differ. Households save differently. SME financing differs. Insolvency regimes, consumer behaviour and financial traditions remain deeply embedded in national institutions.
A European regulation can establish a common rule. But the institution applying that rule encounters a much more local reality. This is one reason national supervisors have not simply disappeared as European institutions have grown stronger.
European authorities can create common frameworks, coordinate supervision, establish standards and increasingly intervene where markets have become genuinely cross-border.
National authorities remain closer to the institutions, customers and economic structures on which those frameworks operate. The relationship therefore does not have to be hierarchical. It can be complementary.
Europe may need rules that travel across borders and institutions that understand what those rules encounter when they arrive.
🟦 What can a national supervisor know that a European authority cannot?
Proximity has informational value.
A national authority can understand whether unusual lending behaviour reflects a systemic risk or a particular feature of the domestic economy. It can recognise local business practices, governance traditions and distribution models. It can see patterns in complaints, misconduct or financial products before those patterns become visible at European scale.
National central banks possess similarly deep knowledge of domestic banks, credit conditions, payment systems and financial cycles. But proximity has a blind spot.
Familiarity can become regulatory capture. National authorities can become more tolerant of risks that are deeply embedded in their own economic model, particularly when politically important institutions, property markets or national financial champions are involved.
Home bias does not have to mean deliberate protection. It can simply mean that risks which appear normal domestically look far less normal when viewed from elsewhere in Europe.
A housing boom can feel structurally justified until it is compared with wider credit conditions. A highly concentrated banking model can appear familiar until stress reveals how much exposure has accumulated. A national champion can look strategically important until its weaknesses become a European liability. But distance creates risks too.
A highly centralised authority may possess a better view of the whole system while understanding less about the texture of an individual market. That creates the real design problem. European supervision sees the system. National supervision sees the terrain. Neither perspective is sufficient on its own. The architecture needs both.
🟦 When does national judgement become European fragmentation?
This is where the national layer becomes difficult. Legitimate differences in local markets do not justify twenty-seven materially different interpretations of the same financial principles.
If similar activities receive substantially different supervisory treatment depending on where an institution is established, capital begins responding not only to economic opportunity but to regulatory geography. That creates arbitrage. It weakens trust. And it makes the Single Market less single than it appears.
The problem is therefore not national discretion itself. The problem begins when discretion becomes unpredictability. That is why supervisory convergence matters. European institutions do not merely create common rules. They also try to reduce unnecessary differences in how those rules are interpreted, applied and enforced.
Yet convergence cannot mean eliminating every difference. A mortgage market in the Netherlands is not identical to one in Italy. A German savings bank is not the same institution as a French universal bank. A Nordic pension system does not interact with capital markets in exactly the same way as household savings elsewhere in Europe.
The challenge is to distinguish economic diversity from regulatory fragmentation.
That boundary matters enormously. Difference can reflect genuine economic structure. It can also become an excuse for preserving national preferences long after the financial activity itself has become European. The purpose of integration should therefore not be to make every national system identical. It should be to prevent legitimate diversity from becoming an obstacle to a coherent market.
🟦 Should more authority move to European institutions — or should the interfaces improve first?
This question has followed Phase III from the beginning. Whenever Europe encounters fragmentation, centralisation appears to offer the simplest solution. Move more authority to ESMA. Expand common supervision. Harmonise more rules. Reduce national discretion. Sometimes that will be necessary.
Markets that have become genuinely European can become difficult to supervise through purely national lenses. Cross-border infrastructures, large financial groups and interconnected capital flows create risks that do not stop at borders. But centralisation is not the only form of integration.
A distributed system can also become more coherent through better interfaces. Common supervisory data can allow different authorities to see the same risks. Shared methodologies can reduce divergent interpretations. Joint teams and supervisory colleges can combine European scale with national knowledge.
Clear escalation procedures can determine when a problem that begins locally has become sufficiently cross-border or systemic to require European involvement. And better information flows can ensure that responsibility does not become trapped at the wrong institutional level.
This introduces another important architectural principle.
The critical question is not only who has authority. It is how responsibility moves when the nature of the problem changes.
A local anomaly may begin as a national supervisory matter. The same anomaly can become European when it affects cross-border institutions, liquidity, market confidence or wider financial stability. At that point the architecture requires a handover. Not because the national authority has failed. But because the problem itself has changed scale.
Integration therefore depends not only on mandates, but on the quality of the handover between them.
That may be more important than permanently moving every responsibility upward.
🟦 Could subsidiarity be financial infrastructure rather than an obstacle to it?
Subsidiarity is usually discussed as a political principle. It can also be understood as an institutional design principle. Not every problem benefits from being handled at the highest possible level. Some responsibilities require proximity. Others require scale.
A national market supervisor may be best placed to identify misconduct inside a domestic distribution network. ESMA may be better placed to determine whether different national approaches are undermining a European market. A national central bank can understand the mechanics of its domestic credit system.
The European monetary architecture can see what those credit systems collectively mean for liquidity, transmission and stability. A domestic authority can understand an institution. A European authority can understand its interdependence.
The challenge is placing responsibility where the problem actually exists.
Local where knowledge matters. European where interdependence matters.
That sounds simple. Institutionally, it is extremely demanding. It requires authorities to know their own limits. It requires common information. It requires trust between institutions. And it requires the ability to move responsibility upward — or leave it local — without every disagreement becoming a political struggle about sovereignty.
That is what makes subsidiarity more than a compromise between Brussels and national capitals. Properly designed, it becomes part of the infrastructure itself.
Guardian
Phase III began with a question about who guards Europe’s emerging financial architecture. The answer turned out not to be one institution.
ESMA guards the connections through which markets increasingly operate as one system.
EIF helps capital cross the transition between innovation and investability.
The EIB adds strategic balance-sheet capacity.
The ECB protects the system beneath the market.
EBA provides a common prudential language for the banking layer.
The SRB prepares for the moment when institutions fail despite those safeguards.
And beneath them all remains the national layer.
Not merely as the residue of incomplete integration, but as the place where European architecture encounters economic reality. That does not mean the current allocation of authority is automatically correct.
Some responsibilities may need to move upward as markets become more integrated. Some national differences may become increasingly difficult to justify. Supervisory arbitrage cannot be defended as subsidiarity. But neither should Europe confuse integration with institutional uniformity.
A financial system spanning twenty-seven economies will always contain differences in law, markets, savings behaviour, institutions and economic structure.
The architecture becomes European not when those differences disappear.
It becomes European when they can operate inside a framework that remains coherent despite them.
That is the broader lesson of Phase III. Europe does not lack institutions. It has built an extraordinary number of them.
There is no single Guardian of European finance. There is an architecture of Guardians — each protecting a different boundary, function or transition within the system. Its strength therefore does not depend on placing every responsibility in one institution.
It depends on whether each institution understands what it guards, where its authority ends — and how responsibility passes to the next layer when the problem changes scale.
Because a mature architecture is not defined by how much power sits at the centre.
It is defined by whether the whole system knows where responsibility belongs.
Credit
Illustration: Altair Media / OpenAI
Caption
Phase III reveals an architecture of Guardians rather than a single centre of control: ESMA, EIF, EIB, ECB, EBA, SRB and the national layer each protect a different function. Europe’s challenge is ensuring that their mandates connect — and that responsibility moves to the right level when the problem changes scale.
