Why ECB M2 Monetary Statistics Are Considered “Fictitious”

Educational Document: Why ECB M2 Monetary Statistics Are Considered “Fictitious” – The Role and Origins of Shadow Banking (NBFI)

Author: CISM – Centro Italiano Studi Monetari - Prepared as teaching material

Date: March 2026 

Target Audience: Economics students, finance professionals, and informed citizens 

Objective: Understand the limitations of official monetary aggregates like M2, the structural gap created by shadow banking/NBFI, and its implications for money creation, liquidity, financial stability, and policy.

1. Introduction: What Is M2 and Why Does It Matter?

The European Central Bank (ECB) publishes monetary statistics to track money supply and guide policy. M2 (broad money) includes cash, overnight deposits, short-term deposits, and certain money market funds within the regulated banking perimeter.

As of February 2026, eurozone M2 stood at approximately €16.246 trillion. However, critics argue that M2 provides a partial and somewhat “fictitious” picture because it excludes the much larger shadow banking / Non-Bank Financial Intermediation (NBFI) sector, which circulates significant liquidity and performs money-like functions outside direct central bank oversight.

2. The Scale of the “Gap”: Official M2 vs. Real Liquidity

    • Official M2 (eurozone, Feb 2026): ~€16.25 trillion 

    • EU/Eurozone NBFI / Shadow Banking: ~€50.7–55 trillion (based on ESRB data through 2025, with continued growth) — roughly 3 times larger than M2. 

This gap is structural, not a simple measurement error. It reflects “free capital” and liquidity created within the banking system but channeled outside the regulatory perimeter, continuing to act as purchasing power and credit.

3. Why Are M2 Statistics Considered “Fictitious”?

M2 only captures the regulated banking sector. It misses liquidity recycled into investment funds, hedge funds, private equity, securitization vehicles, and other NBFI entities. When banks create money through loans and that capital is later repaid or transferred, it often migrates outside bank balance sheets without “disappearing.” This hidden liquidity influences asset prices, credit conditions, and economic activity but escapes traditional M2 tracking — leading to an underestimation of total money-like claims in the economy.

4. Origins and Mechanics of Shadow Banking (NBFI)

Shadow banking (NBFI) involves credit intermediation — maturity/liquidity transformation and credit enhancement — outside the traditional regulated banking system. It grew after the 2008 crisis due to tighter bank regulation (Basel III), pushing activity toward less-regulated entities.

Key features include the creation and recycling of “free capital,” the provision of money-like instruments to institutional investors, and complex interconnections with banks via repo markets, securities financing, and collateral reuse.

5. The ECB’s Own Perspective on Shadow Banking / NBFI

The ECB does not use the term “fictitious” for M2 statistics. Instead, it acknowledges that traditional monetary aggregates like M2 have become less comprehensive in a modern financial system where market-based finance and NBFI play a growing role. The ECB monitors NBFI closely through its Financial Stability Review, Occasional Papers, and joint work with the European Systemic Risk Board (ESRB).

Key elements of the ECB’s view (2025–2026 publications):

    • NBFI provides benefits but carries structural vulnerabilities: Non-banks offer valuable services such as credit to the real economy, liquidity transformation, and risk-sharing. However, they often feature liquidity mismatches (long-term assets funded by short-term or redeemable liabilities), leverage (including synthetic leverage via derivatives), and opacity, which can amplify shocks.

    • Interconnections with banks create spill-over risks: Euro-area banks are net borrowers from the NBFI sector (especially via short-term repo and securities financing transactions). A large share of this funding matures within days or a week. Stress in NBFI (e.g., large redemptions from investment funds or margin calls) can quickly transmit to banks through:

        ◦ Funding outflows 

        ◦ Counterparty credit losses 

        ◦ Forced asset sales (fire sales) that depress prices and collateral values 

        ◦ Reduced provision of leverage by banks to NBFI entities 

      These linkages are concentrated among a small number of large global systemically important banks (G-SIBs).

    • Systemic risk potential: While current linkages do not pose acute threats, they can amplify stress in adverse scenarios (e.g., “dash for cash” episodes like March 2020, UK gilt crisis 2022, or Archegos 2021). The ECB highlights two main channels of systemic vulnerability:

        ◦ Liquidity risk to the banking system 

        ◦ Procyclical provision of leverage to NBFI 

    • Impact on monetary policy transmission: NBFI growth can weaken or alter how ECB policy (interest rates, QE/QT) affects the real economy. Liquidity and credit creation increasingly occur outside the banking perimeter, making traditional transmission channels less predictable. The ECB has published dedicated analysis on this (e.g., Occasional Paper No. 270, 2021, with ongoing updates).

    • Policy stance: The ECB supports:

        ◦ Better data and monitoring (granular data on bank-NBFI linkages remain incomplete) 

        ◦ Activity-based regulation rather than entity-based only 

        ◦ Liquidity management tools for funds (e.g., redemption gates, swing pricing) 

        ◦ Enhanced resilience measures for money market funds, margining practices, and leverage 

        ◦ Closer macroprudential oversight and system-wide stress testing 

In summary, the ECB sees NBFI as an important and growing part of the financial ecosystem that requires vigilant monitoring and targeted policy tools to mitigate risks without stifling innovation. It complements — rather than replaces — traditional banking and monetary aggregates.

6. Implications for the Economy and Policy

    • Liquidity and inflation: Real purchasing power may be significantly larger than M2 suggests, potentially fueling asset bubbles or hidden inflationary pressures. 

    • Policy effectiveness: Monetary policy primarily influences the regulated sector; leakage to NBFI can reduce its impact. 

    • Financial stability: Interconnections increase the risk of contagion. Central banks may still need to act as “lender/market maker of last resort” in stress events. 

    • Broader effects: The M2–NBFI gap contributes to distortions in capital allocation and economic inequality debates. 

7. Key Data Summary (early 2026 context)

    • Eurozone M2: ~€16.25 trillion 

    • EU NBFI: ~€50–55 trillion (≈3× M2) 

    • Global NBFI (FSB broad measure, 2024): ~$257 trillion, continuing to grow faster than banking assets 

8. Discussion Questions

    1. How does the ECB’s focus on “linkages and spill-overs” differ from the critique that M2 is “fictitious”? 

    2. Should regulators expand the monetary perimeter to include more NBFI liabilities, or is activity-based regulation sufficient? 

    3. In what ways might NBFI both support and undermine the ECB’s price stability mandate? 

    4. Compare the ECB/ESRB emphasis on data gaps and interconnections with post-2008 reforms. 

9. Further Reading

    • ECB & ESRB Joint Report (February 2026): Financial stability risks from linkages between banks and the non-bank financial intermediation sector 

    • ECB Financial Stability Review – Special features on bank-NBFI linkages (2025) 

    • ESRB EU Non-bank Financial Intermediation Risk Monitor 2025 

    • ECB Occasional Paper Series on NBFI and monetary policy transmission 

    • Original blog post: “BCE: Perché le statistiche monetarie di M2 sono fittizie” https://centralerischibanche.blogspot.com/2026/03/bce-perche-le-statistiche-monetarie-di.html