Rate hikes vs. rate cuts: asymmetries in Euro Area monetary policy transmission
In this paper, Michael Pfarrhofer and Anna Stelzer examine whether a rate hike and a rate cut of the same magnitude produce mirror-image effects on credit, output, and inflation, or whether one is systematically more powerful than the other. The authors develop a nonlinear mixed-frequency model that combines monthly and quarterly euro area data in a single framework, avoiding information loss from aggregation. To capture nonlinearities without imposing a specific functional form, they use Bayesian Additive Regression Trees (BART), letting the data determine the shape of relationships.
The model incorporates both standard macro/financial variables from January 2003 to September 2023 and four Bank Lending Survey (BLS) factors measuring credit channel dynamics (broad credit conditions, bank lending, borrower balance sheets, and credit demand).
Findings
- Tightening dominates easing: Contractionary monetary policy produces strong, statistically significant, and persistent responses in credit, output, and inflation. Expansionary policy yields muted or insignificant effects.
- Bank channels are asymmetric: The credit, bank lending, and borrower balance sheet channels all show pronounced sign asymmetries. Tightening sharply tightens credit standards; easing does not comparably loosen them. The one partial exception is credit demand, which responds positively to easing, though still less than it falls under tightening.
- Nonlinear shapes matter: Parametric approximations (linear, sign-nonlinearity, size-nonlinearity) fit poorly compared to the flexible BART estimates, confirming that richer nonlinear structures are needed.
- Limited state-dependence: The asymmetries hold up whether the economy is in recession or expansion, and whether interest rates are near the effective lower bound or not, suggesting the asymmetry is structural, rooted in how banks and borrowers respond, rather than cyclical.
- Inflation behaves differently: Larger contractionary shocks have disproportionately smaller effects on inflation , while large expansionary shocks have disproportionately larger effects, a subtle but policy-relevant nonlinearity.
Are there asymmetries in euro area monetary policy?
Authors: Michael Pfarrhofer, Anna Stelzer
From: Vienna University of Economics and Business, Oesterreichische Nationalbank
The micro roots of asymmetric monetary policy transmission in the euro area
Pfarrhofer and Stelzer, above, show that the credit channel and bank lending channel react strongly to tightening but weakly to easing. In this paper, Donata Faccia, Franziska Hünnekes, and Petra Köhler-Ulbrich supply a bank-level rationale: the structural asymmetry arises because impaired banks are forced to tighten standards during rate hikes but face far less pressure to loosen them when rates fall.
The authors build a unique quarterly bank-firm panel dataset spanning 10 euro area countries from 2008 to 2020. The dataset links three sources: confidential Individual Bank Lending Survey (IBLS) data (the bank-level replies underlying the aggregate BLS), bank financial data from SNL (CET1 capital ratios, CDS spreads, loan loss provisions), and firm balance sheet data from Orbis Europe (leverage, Altman Z-score, ROA) — matching roughly 101 banks to 1.8 million firms.
Findings
- Bank health drives credit standards: Banks with lower CET1 capital ratios set tighter credit standards i.e. a one standard deviation increase in the CET1 ratio leads to approximately 0.2 standard deviations easier credit standards.
- Firm risk interacts with bank health: Banks tighten standards more when linked to higher-risk firms (higher leverage or lower Altman Z-score), but this effect is substantially dampened when the bank itself is well-capitalised.
- Funding costs amplify tightening for weak banks: When bank funding costs rise, less well-capitalised banks tighten their credit standards significantly more especially when their borrowers are already risky. Healthy banks barely adjust.
- Heterogeneity in the bank lending channel: Overall, the paper provides systematic micro-level evidence that the strength of the bank lending channel depends critically on the joint financial health of both the lender and the borrower.
What drives banks’ credit standards? An analysis based on a large bank-firm panel
Authors: Donata Faccia, Franziska Hünnekes, Petra Köhler-Ulbrich
From: ECB
