Non-banks amplify monetary policy transmission, ECB paper
A new European Central Bank (ECB) Occasional Paper finds that non-bank financial intermediaries (NBFIs) tend to amplify monetary policy transmission in the euro area. This amplification is particularly pronounced during financial stress and depends on NBFIs' funding structures.
Funding structures dictate impact
The paper, part of the ESCB's ChaMP Research Network, highlights the growing importance of NBFIs, which held over half of euro area financial assets by 2025.
It finds that NBFIs generally amplify monetary policy transmission within the financial sector, especially those with uninsured short-term funding whose costs adjust rapidly to interest rate changes.
Conversely, institutions with stable long-term funding, such as insurers and pension funds, may attenuate transmission, though their cushioning effect is limited due to their smaller share in total credit provision.
This heterogeneity means monetary policy transmission is not uniform across the non-bank sector.
Stress amplifies, collateral matters
Transmission through NBFIs is highly state-dependent, with amplification strengthening during financial stress when NBFIs face investor withdrawals and forced deleveraging.
Lacking direct central bank liquidity access, NBFIs may rebalance portfolios abruptly.
Beyond lending, NBFIs influence transmission through portfolio rebalancing and collateral dynamics.
As major securities holders, their reallocation across asset classes, maturities, and risk profiles responds to monetary policy.
Collateral availability and pricing in repo markets are crucial, as scarcity can dampen or amplify monetary transmission depending on safe asset holdings and central bank facility access.
More complex, less predictable
Non-banks have fundamentally reshaped monetary policy transmission, rendering it more heterogeneous, state-dependent, and intertwined with financial stability.
This demands urgent monitoring of NBFI funding structures, collateral dynamics, and banking system linkages.
Without such oversight, central banks face a less predictable environment for effective policy and safeguarding market stability.