## 1. Profitability

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### Abstract — key findings
- Banks that were more successful at protecting their profits:
  - had a less pronounced deterioration in loan quality;
  - had a larger improvement in cost efficiency;
  - downsized their assets more aggressively during the crisis;
  - reduced reliance on wholesale funding more markedly post-crisis.
- Net interest margins remained broadly stable over the financial cycle, including post-crisis.
- There is no clear evidence that aspects of bank business model, such as higher reliance on fees and commission income, were associated with better profitability post-crisis.
- JEL Classification Numbers: E30, G01, G21.
- Keywords: Financial Cycle, Bank Profitability, Financial Crisis.
- Authors: Enrica Detragiache, Thierry Tressel, Rima Turk-Ariss.
- WP/18/99.

### Context and systemic drivers
- EU banking system experience over the sample:
  - rapid expansion, deep crisis, tepid recovery over ~15 years.
- Post-crisis headwinds listed:
  - crisis legacies;
  - adaptation to stricter financial regulation;
  - increased competition from nonbank intermediaries;
  - disruption from new technologies;
  - weak economic growth and lackluster business investment reducing credit demand;
  - negative policy interest rates and a flat yield curve pressuring interest margins.
- Result: bank profitability plunged during the crisis and remained low post-crisis.

### Empirical emphasis and data scope
- Data: bank-level balance sheet and income statement data for 114 EU banks over 2000–2016 (Fitch database).
- Focus: determinants of profitability performance across banks and over time, including loan quality, cost efficiency, asset growth/downsizing, funding structure, net interest margins, and revenue mix.
- Subperiods: 2000–04 (pre-boom), 2005–07 (boom), 2008–12 (crisis), 2013–16 (post-crisis).

### I. Main findings and summary
- Containing rise in NPLs associated with better profit preservation.
- Cost discipline (reductions in operating costs) translated into better profit performance.
- Banks that reduced assets more aggressively during the crisis experienced smaller post-crisis profit declines.
- Larger declines in the share of wholesale funding correlated with better post-crisis profit performance.
- Net interest margins (NIM) broadly stable over the cycle.
- No evidence that greater reliance on fees and commission income was systematically associated with better profit performance post-crisis.

### II. Sample construction and subperiods
- Sample composition:
  - 114 EU banks reporting consolidated accounts over 2000–2016.
  - Country groups: Eastern EU (Hungary, Poland, Romania, Slovenia), Nordics (Denmark, Finland, Sweden), Other EU (Austria, Belgium, France, Germany, Luxembourg, Netherlands, UK), EC-6 (Cyprus, Greece, Ireland, Italy, Portugal, Spain).
  - Includes G-SIBs for international comparisons; U.S. assets adjusted for accounting differences.
- Exclusions: unconsolidated accounts, subsidiaries, banks that closed during the sample.

### III. Stylized facts: profitability, asset quality, dividends, assets, leverage, funding

- Profitability patterns
  - ROA and ROE: rose in the boom, declined dramatically in the crisis, remained depressed post-crisis.
  - Nordics post-crisis ROE: 9.1 percent (down from 13.8 percent in the pre-boom period).
  - EC-6 experienced the sharpest decline in ROE (partly due to provisioning for high NPLs).
- Net interest margin (selected weighted averages for EU G-SIBs by period)
  - Net Interest Margin: Pre-boom 1.4, Boom 1.0, Crisis 1.1, Post-crisis 1.2.
  - ROA: Pre-boom 0.6, Boom 0.6, Crisis 0.2, Post-crisis 0.1.
  - ROE: Pre-boom 13.4, Boom 16.3, Crisis 2.7, Post-crisis 2.4.
- NPLs / Gross loans (selected weighted averages)
  - EC-6: Pre-boom 2.4, Boom 34.1, Crisis 98.9, Post-crisis 17.4.
  - Eastern EU: Pre-boom 20.6, Boom 37.0, Crisis 48.7, Post-crisis 29.6.
- Dividends
  - Eastern EU and EC-6 cut dividend payouts post-crisis.
  - Other EU and Nordics increased payout ratios to close to 70 percent post-crisis (from around 50 percent pre-crisis).
  - For largest banks, post-crisis dividend payout ratios averaged close to 75 percent of earnings.
  - US G-SIB dividend payout ratio dropped to 18 percent post-crisis.
- Asset growth (annual rates, weighted averages by region)
  - EC-6: Pre-boom 13.8, Boom 21.4, Crisis 1.6, Post-crisis -6.2.
  - Eastern EU: Pre-boom 29.3, Boom 28.7, Crisis 5.4, Post-crisis -0.6.
  - Other EU: Pre-boom 16.1, Boom 23.0, Crisis -0.6, Post-crisis -7.3.
  - Nordics: Pre-boom 21.7, Boom 20.8, Crisis 4.1, Post-crisis -4.7.
  - Overall sample: mean asset growth ~7.7 percent, median 1.7 percent.
- Leverage / capitalization (Tangible equity / Tangible assets, TE ratio; weighted averages)
  - EC-6: Pre-boom 4.5, Boom 4.4, Crisis 4.2, Post-crisis 5.2.
  - Eastern EU: Pre-boom 9.5, Boom 8.0, Crisis 9.1, Post-crisis 10.5.
  - Other EU: Pre-boom 3.2, Boom 2.8, Crisis 2.9, Post-crisis 4.4.
  - Nordics: Pre-boom 4.2, Boom 3.8, Crisis 3.6, Post-crisis 4.6.
  - Large banks had lower TE than small banks in pre-boom (3.4 percent vs 6.0 percent); TE fell to 2.8 percent for largest banks in boom.
- Funding (wholesale funding / total funding, weighted averages)
  - EC-6: Pre-boom 30.3, Boom 38.7, Crisis 32.9, Post-crisis 26.3.
  - Eastern EU: Pre-boom 3.1, Boom 12.4, Crisis 12.0, Post-crisis 6.4.
  - Other EU: Pre-boom 23.1, Boom 39.2, Crisis 33.7, Post-crisis 27.4.
  - Nordics: Pre-boom 39.2, Boom 44.1, Crisis 48.1, Post-crisis 49.0.
  - Average wholesale funding / total funding: Pre-boom 25.9, Boom 37.8, Crisis 34.3, Post-crisis 29.3.

### IV. Decomposing the decline in ROA (components and regional patterns)
- Accounting identity used: change in ROA = ∆Non-interest income – ∆Non-interest expense – ∆Provisions + ∆NIM (full formula in source).
- Regional drivers of boom → post-crisis decline:
  - Eastern EU: large decline driven by sharp fall in NIM and non-interest income, and increased loan-loss provisions; partially offset by contraction in operating expenses.
  - EC-6: decline mainly driven by provisioning for NPLs; operational cost savings did not offset provisioning.
  - Other EU: decline mainly reflected fall in revenue from non-traditional banking activities (other non-interest income).
  - Nordics: reduction in income from non-traditional activities and some increased provisioning contributed to lower ROA, but operational cost savings limited deterioration.
- NIM patterns:
  - Only Eastern EU showed sizable decline in NIM among regions; Other EU experienced improvement.
  - By size: small banks saw worsening intermediation spreads; largest banks registered slight increase in NIM.
- G-SIBs:
  - Intermediation spreads rose for EU G-SIBs but declined for non-EU peers.
  - All G-SIBs except Swiss and Chinese saw declines in earnings from non-traditional sources.
  - EU G-SIBs faced greater increases in operating and provisioning costs relative to other G-SIBs; U.S. G-SIBs compensated with sharp cost cutting.

### V. Empirical approach and estimation
- Dependent variable: change in ROA between consecutive financial-cycle phases (pre-boom → boom, boom → crisis, crisis → post-crisis).
- Main regression (panel): ΔROA_ijt = X_{ijt-1} β + ΔZ_ijt γ + ΔM_jt δ + α_t + ε_ijt.
  - X: bank initial characteristics averaged over previous period.
  - ΔZ: contemporaneous changes in bank variables (percentage points).
  - ΔM: changes in country-specific macro variables (decimals) in some specifications.
  - Period fixed effects and some specifications include regional fixed effects.
- Estimation: OLS with robust standard errors clustered at bank level; panel has three period changes; winsorization at 5 percent used in robustness checks.

### VI. Bank-level explanatory variables
- Initial conditions (averaged over previous period):
  - Bank size (log of assets).
  - Past expansion (asset growth rate).
  - Funding model (share of wholesale funding).
  - Loan portfolio quality (NPLs / net loans).
  - Share of interest income in total income.
  - Tangible equity / tangible assets (TCE/TA).
  - Initial profitability (for mean reversion).
- Contemporaneous changes:
  - Change in wholesale funding share.
  - Change in operating costs (non-interest expenses / TA).
  - Change in reliance on fees and commission income.
  - Change in NPL ratio.

### VII. Macroeconomic controls
- Country-specific macro proxies experimented with:
  - Real GDP growth, output gap, unemployment rate.
  - Policy rate proxies, term premium, aggregate credit growth.
  - Stock price growth, housing price growth.
  - Sovereign stress: spreads relative to bunds.
  - Difference between average system-wide deposit interest rates and policy rate.
- Note: cross-border operations of EU banks may limit relevance of domestic macro variables.

### VIII. Key empirical facts, summary statistics, and regression results

- Sample summary statistics (selected)
  - ROA: overall sample mean 0.24 percent; median 0.31 percent.
  - Asset growth: overall sample mean 7.68; median 1.67.
  - Wholesale funding / total funding: mean 30.90; median 27.89.
  - NPLs: average 6.4 percent of gross loans; median 3.9 percent.
  - Interest income share: on average 80 percent of total income (source text reports “on average 80 percent”).
  - Tangible common equity: on average about 5 percent of total tangible assets (source text).
- ROA changes and correlations
  - ROA declined on average by 0.21 percentage points from one period to the next; median decline -0.06 percentage points.
  - Share of fees and commission income approximately stable on average; large heterogeneity across banks.
  - Average decline in wholesale funding share: -1.72 percentage points; median -0.87 percentage points.
  - Ratio of non-interest expenses to total assets declined (widespread cost cutting).
  - NPL ratio increased on average by 3 percentage points.
- Pairwise correlations (selected)
  - Level correlations: ROA : Asset growth 0.6842; ROA : Tangible common equity / total equity 0.4609; ROA : Non performing loans / gross loans -0.4132.
  - Change correlations: ROA : Wholesale funding / total funding -0.5918; ROA : ROE -0.7173; Non interest expenses / total assets : Non performing loans / gross loans -0.6152.
- Panel regression key coefficients and magnitudes (selected)
  - Mean reversion: A 100-basis points higher initial ROA associated with an additional decline in profits of some 80 basis points in the subsequent phase.
  - Asset growth: A ten percentage-point higher asset growth in the previous phase associated with a subsequent decline in profitability of an additional 12 basis points. Unweighted sample average decline in ROA is 21 basis points.
  - Capitalization: An increase in tangible capital ratio of 1 percentage point raises ROA by slightly over 4 basis points (significant at 10 percent).
  - Period effects: Crisis period associated with decline in ROA of some 50 basis points; post-crisis associated with further decline of some 50 basis points.
  - Regional effects: “Other EU” dummy estimated 18 basis points lower change in profits than Nordic banks (Nordics omitted).
  - Region × period interactions:
    - EC-6 * crisis coefficient: -0.584***.
    - Eastern EU * crisis coefficient: -0.781***.
    - Eastern EU * post crisis coefficient: -1.307**.
  - Macroeconomic controls (example coefficients):
    - Stock price growth coefficient 1.544*** (positive for bank profits).
    - Spread to Bunds coefficient -0.109*** (negative for profits).
    - Deposit rate minus short-term rate coefficient -0.237* (widening associated with declining profitability in one specification).
  - Contemporaneous bank changes:
    - Wholesale funding change coefficient ~ -0.0132*** (decline in wholesale funding associated with higher ΔROA): a 5-percentage point decline → increase in ROA of 8 basis points.
    - Operating cost efficiency: lowering non-interest expenses / TA by 100 basis points → increase in ROA by some 30–40 basis points.
    - Asset quality: a 5 percentage points increase in NPL ratio → additional decline in ROA by more than 30 basis points.
  - Fees and commission income: changes not systematically related to ΔROA in most specifications.

### Probit results — characteristics of highly profitable post-crisis banks
- Definition: top quintile of ROE distribution during post-crisis period; ROE ≥ 9 percent.
- Country-group effects (selected coefficients)
  - EC-6 dummy: -0.949* (negative and significant in one specification).
  - Other EU dummy: -1.414*** (negative and significant).
  - Eastern EU coefficient reported as 0.543 in one specification (not consistently significant).
- Macro variables (post-crisis averages):
  - Short-term interest rate (ST rate) positive and significant: ST rate coefficient 0.841*** in one specification.
  - Deposit rate minus ST rate coefficients reported as -0.395 and -0.154 (not significant across all).
- Bank-specific characteristics associated with higher probability of high post-crisis profitability:
  - Smaller size: log(assets) negative and significant (e.g., -0.193**).
  - Better loan quality: NPL/GL negative and highly significant (e.g., -0.102***).
  - Some evidence that lower reliance on interest income relates to higher profitability (interest income share coefficients include -0.677, -4.224***, -4.093*** across specifications).
  - Wholesale funding share not robustly associated with being highly profitable.
  - Asset growth marginally significant negative in some specifications (e.g., -0.00189*).

### Conclusions and policy-relevant implications
- 2000–2007: rapid balance sheet expansion financed by rising wholesale funding share; leverage rose without commensurate high-quality capital; ROE mechanically boosted.
- From 2008: wholesale funding withdrew, banks downsized and delevered; deteriorating loan quality in some countries; state liquidity and capital injections often required.
- Post-crisis profitability remained low owing to lower leverage, difficulty cutting costs while downsizing, and persistent high NPLs for some banks.
- Net interest margins remained broadly stable over the financial cycle in the sample; interest earnings and expenses fell in lockstep during downturns.
- Policy and supervisory implications (empirically supported):
  - Strengthen asset-quality monitoring and loss-recognition practices to limit deterioration in loan quality and support profitability.
  - Policies and supervisory measures that promote cost efficiency can materially affect profitability outcomes; lowering non-interest expenses yields substantial ROA gains.
  - Incentives or frameworks that encourage active balance-sheet management (downsizing non-core assets during stress) can be associated with better profit protection, subject to macroprudential trade-offs.
  - Monitoring and, where appropriate, reducing reliance on wholesale funding can improve resilience and post-crisis profitability; the quality and orderliness of the funding shift matters.
  - Stability of NIMs suggests measures aimed solely at restoring margins may have limited short-term payoff; broader structural and demand-side recovery and a more favorable interest-rate environment matter for bank returns (post-crisis higher short-term rates increase probability of ROE ≥ 9 percent).

*Source: IMF Working Paper WP/18/99 (wp1899) — extracted sections on profitability, sample, stylized facts, empirical methodology, regression and probit results, and policy implications.*

### 1. Profitability

### 1. Profitability

### Abstract — key findings
- Banks that were more successful at protecting their profits:
  - had a less pronounced deterioration in loan quality;
  - had a larger improvement in cost efficiency;
  - downsized their assets more aggressively during the crisis;
  - reduced reliance on wholesale funding more markedly post-crisis.
- Net interest margins remained broadly stable over the financial cycle, including post-crisis.
- There is no clear evidence that aspects of bank business model, such as higher reliance on fees and commission income, were associated with better profitability post-crisis.
- JEL Classification Numbers: E30, G01, G21.
- Keywords: Financial Cycle, Bank Profitability, Financial Crisis.
- Authors: Enrica Detragiache, Thierry Tressel, Rima Turk-Ariss.
- WP/18/99.

### Context and systemic drivers
- The EU banking system experienced a rapid expansion, a deep crisis, and a tepid recovery over the last 15 years or so.
- The post-crisis recovery was hampered by:
  - crisis legacies;
  - the need to adapt to stricter financial regulation;
  - increased competition from nonbank financial intermediaries;
  - disruption from new technologies;
  - weak economic growth and lackluster business investment reducing credit demand;
  - negative policy interest rates and a flat yield curve putting pressure on interest margins.
- As a result, bank profitability plunged during the crisis and has remained low in the post-crisis period.

### Empirical emphasis and data scope
- Analysis based on bank-level balance sheet and income statement data for EU banks over the recent financial cycle.
- Focus on determinants of profitability performance across banks and over time, including loan quality, cost efficiency, asset growth/downsizing, funding structure, net interest margins, and revenue mix.

### Implications for policy and supervision
- Strengthening asset-quality monitoring and loss-recognition practices can support profitability by limiting deterioration in loan quality.
- Policies and supervisory measures that promote cost efficiency may materially affect profitability outcomes.
- Incentives or frameworks that encourage the active management of balance-sheet size during stress episodes can be associated with better profit protection.
- Monitoring and, where appropriate, reducing reliance on wholesale funding can improve resilience and post-crisis profitability.
- Persistence of stable net interest margins suggests that measures aimed solely at restoring margins may have limited short-term payoff; broader structural and demand-side recovery remains important.

*Source: IMF Working Paper WP/18/99, April 2018.*

### section II for the definition of subperiods). For listed banks, the extent of the current

### wp1899 - section II for the definition of subperiods). For listed banks, the extent of the current

### I. Main findings and summary
- Banks that managed to contain the rise in NPLs were better able to preserve profitability.
- Cost discipline mattered: reductions in operating costs translated into better profit performance.
- Banks that reduced their assets more aggressively during the crisis experienced a smaller decline in profits in the post-crisis years.
- Better profit performance post-crisis is associated with larger decline in the share of wholesale funding.
- Net interest margins (NIM) remained broadly stable over the financial cycle.
- No evidence that reliance on fees and commission income (diversification of income sources) was associated with better profit performance in the post-crisis environment.

### II. Sample construction and subperiods
- Sample: 114 EU banks reporting consolidated balance sheet and income statement data over 2000-2016 (Fitch database).
- Exclusions: banks reporting only unconsolidated accounts, subsidiaries (to avoid double-counting), and banks that closed during the sample (survivorship bias acknowledged).
- Subperiods defined: 2000-04 (pre-boom), 2005-07 (boom), 2008-12 (crisis), 2013-16 (post-crisis).
- Country groups: Eastern EU (Hungary, Poland, Romania, Slovenia), Nordics (Denmark, Finland, Sweden), Other EU (Austria, Belgium, France, Germany, Luxembourg, Netherlands, UK), EC-6 (Cyprus, Greece, Ireland, Italy, Portugal, Spain).
- Sample also includes G-SIBs for international comparisons; total assets for U.S. banks adjusted for accounting differences.

### III. Stylized facts: profitability, asset quality, dividends, assets, leverage, funding
- Profitability
  - ROA and ROE rose in the boom, declined dramatically in the crisis, and remained depressed post-crisis.
  - Nordic banks post-crisis ROE: 9.1 percent (down from 13.8 percent in the pre-boom period).
  - EC-6 experienced the sharpest decline in ROE (partly due to provisioning for high NPLs).
  - Net interest margins declined from pre-boom to boom but remained on average broadly stable since the boom.
  - Weighted averages by G-SIB country (selected figures):
    - EU G-SIBs: Net Interest Margin by period — Pre-boom 1.4, Boom 1.0, Crisis 1.1, Post-crisis 1.2; ROA — Pre-boom 0.6, Boom 0.6, Crisis 0.2, Post-crisis 0.1; ROE — Pre-boom 13.4, Boom 16.3, Crisis 2.7, Post-crisis 2.4.
    - China: Net Interest Margin — Pre-boom 2.1, Boom 2.4, Crisis 2.5, Post-crisis 2.4; ROA — Pre-boom 4.6, Boom 10.9, Crisis 18.7, Post-crisis 17.1; ROE — Pre-boom 0.4, Boom 0.7, Crisis 1.1, Post-crisis 1.2.
    - US: Net Interest Margin — Pre-boom 2.3, Boom 1.9, Crisis 1.9, Post-crisis 1.7; ROA — Pre-boom 15.0, Boom 15.0, Crisis 4.2, Post-crisis 8.4; ROE — Pre-boom 1.0, Boom 1.0, Crisis 0.3, Post-crisis 0.6.
- Asset quality and dividends
  - Dividend behavior: Eastern EU and EC-6 cut dividend payouts post-crisis; Other EU and Nordics increased payout ratios to close to 70 percent post-crisis (from around 50 percent pre-crisis).
  - For largest banks, post-crisis dividend payout ratios averaged close to 75 percent of earnings.
  - US G-SIB dividend payout ratio dropped to 18 percent post-crisis.
  - NPLs / Gross loans (selected weighted averages by region and period):
    - EC-6: Pre-boom 2.4, Boom 34.1, Crisis 98.9, Post-crisis 17.4.
    - Eastern EU: Pre-boom 20.6, Boom 37.0, Crisis 48.7, Post-crisis 29.6.
    - Other EU and Nordics data reported in tables (see sample).
- Asset growth
  - Assets grew at annual rates over 15 percent (pre-boom) and over 20 percent (boom) on average across the sample; contraction in post-crisis period.
  - Weighted averages by region (Assets annual growth):
    - EC-6: Pre-boom 13.8, Boom 21.4, Crisis 1.6, Post-crisis -6.2.
    - Eastern EU: Pre-boom 29.3, Boom 28.7, Crisis 5.4, Post-crisis -0.6.
    - Other EU: Pre-boom 16.1, Boom 23.0, Crisis -0.6, Post-crisis -7.3.
    - Nordics: Pre-boom 21.7, Boom 20.8, Crisis 4.1, Post-crisis -4.7.
  - Median asset growth differs from mean: overall sample mean asset growth ~7.7 percent, median 1.7 percent.
- Leverage and capitalization
  - Tangible common equity / Tangible assets (TE ratio) used as capitalization measure.
  - TE ratio weighted averages by region (percent):
    - EC-6: Pre-boom 4.5, Boom 4.4, Crisis 4.2, Post-crisis 5.2.
    - Eastern EU: Pre-boom 9.5, Boom 8.0, Crisis 9.1, Post-crisis 10.5.
    - Other EU: Pre-boom 3.2, Boom 2.8, Crisis 2.9, Post-crisis 4.4.
    - Nordics: Pre-boom 4.2, Boom 3.8, Crisis 3.6, Post-crisis 4.6.
  - Large banks had lower TE ratio than small banks in pre-boom (3.4 percent vs 6.0 percent).
  - TE ratio fell to lowest level during the boom (2.8 percent) for the largest banks group.
  - Post-crisis, EU banks increased capitalization but remained below some non-EU G-SIB peers.
- Funding
  - Wholesale funding rose pre-crisis and fell after market disruptions; customer deposits increased correspondingly (except Nordics).
  - Wholesale funding ratio defined as (total funding - deposits – equity)/(total funding - equity); includes central bank liquidity provision.
  - Wholesale funding / Total funding weighted averages by region (percent):
    - EC-6: Pre-boom 30.3, Boom 38.7, Crisis 32.9, Post-crisis 26.3.
    - Eastern EU: Pre-boom 3.1, Boom 12.4, Crisis 12.0, Post-crisis 6.4.
    - Other EU: Pre-boom 23.1, Boom 39.2, Crisis 33.7, Post-crisis 27.4.
    - Nordics: Pre-boom 39.2, Boom 44.1, Crisis 48.1, Post-crisis 49.0.
  - Average wholesale funding / Total funding: Pre-boom 25.9, Boom 37.8, Crisis 34.3, Post-crisis 29.3.

### IV. Decomposing the decline in ROA (components and regional patterns)
- ROA decomposition identity (accounting-based): change in ROA = ∆Non-interest income – ∆Non-interest expense – ∆Provisions + ∆NIM (as expressed in text; full formula and components provided in source).
- Regional patterns in change from boom to post-crisis:
  - Eastern EU: large decline driven by sharp fall in NIM and non-interest income, and an increase in loan-loss provisions; partially offset by contraction in operating expenses.
  - EC-6: decline mainly driven by provisioning for NPLs; operational cost savings did not offset provisioning.
  - Other EU: decline mainly reflected fall in revenue from non-traditional banking activities (other non-interest income category).
  - Nordics: reduction in income from non-traditional activities and some increased provisioning contributed to lower ROA, but operational cost savings limited deterioration.
- NIM specifics:
  - Only Eastern EU showed a sizable decline in NIM among regions; Other EU experienced an improvement in NIM.
  - Across banks by size: small banks experienced worsening intermediation spreads, while the largest banks registered a slight increase in NIM.
- G-SIBs decomposition:
  - Intermediation spreads rose for EU G-SIBs but declined for non-EU peers.
  - All G-SIBs except Swiss and Chinese saw a decline in earnings from non-traditional sources.
  - EU G-SIBs faced greater increases in operating and provisioning costs relative to other G-SIBs; U.S. G-SIBs compensated with sharp cost cutting.

### V. Empirical approach to explain changes in profitability
- Dependent variable: change in ROA between consecutive financial-cycle phases (pre-boom → boom, boom → crisis, crisis → post-crisis). ROA favored over ROE to limit sensitivity to leverage changes.
- Regression specification (panel):
  - ΔROA_ijt = X_{ijt-1} β + ΔZ_ijt γ + ΔM_jt δ + α_t + ε_ijt (notation summarized from source; OLS with robust standard errors clustered at bank level).
  - X: vector of bank initial characteristics averaged over previous period (pre-determined).
  - ΔZ: vector of contemporaneous changes in bank variables (in percentage points).
  - ΔM: changes in country-specific macroeconomic variables (in decimals) in some specifications.
  - Period fixed effects included; some specifications include regional fixed effects.
- Estimation details and robustness:
  - Regressions estimated using OLS with robust standard errors clustered at the bank level.
  - Panel has three periods (four stages imply three changes).
  - Robustness: winsorization at 5 percent for some extreme changers in robustness checks; results robust to such winsorization.
  - Separate cross-sectional regressions run for each phase due to potential changing impacts over the cycle.

### VI. Bank-level explanatory variables used
- Initial conditions (pre-determined, averaged over previous period):
  - Bank size (log of assets).
  - Past expansion (asset growth rate over previous subperiod).
  - Funding model (share of wholesale funding in total funding).
  - Loan portfolio quality (NPLs / net loans).
  - Share of interest income in total income (proxy for reliance on traditional intermediation).
  - Initial tangible equity / total tangible assets (buffer measure).
  - Initial profitability to control for mean reversion.
- Contemporaneous changes (from t-1 to t):
  - Change in funding model (change in share of wholesale funding).
  - Change in operating costs (cost efficiency adjustments).
  - Change in reliance on fees and commission income (income diversification).
  - Change in NPL ratio (deterioration in loan quality).

### VII. Macroeconomic controls and considerations
- Country-specific macroeconomic proxies experimented with include:
  - Real GDP growth, output gap, unemployment rate.
  - Policy rate proxies, term premium, aggregate credit growth.
  - Stock price growth, housing price growth.
  - Sovereign stress: spreads relative to bunds.
  - Difference between average system-wide deposit interest rates and policy rate (to capture deposit market rigidities or regulatory floors).
- Acknowledgement: several EU banks have significant cross-border operations; domestic macro variables may not fully capture the macroeconomic environment relevant for these banks.

### VIII. Sample summary statistics (selected)
- Profitability (ROA): overall sample mean 0.24 percent; median 0.31 percent.
- Asset growth: overall sample mean ~7.7 percent; median 1.7 percent.
- Wholesale funding: average about 30 percent of total funding (wide dispersion across banks).
- NPLs: average 6.4 percent of gross loans; median 3.9 percent.
- Interest income share: on average 80 percent of total income.
- Tangible common equity: on average about 5 percent of total tangible assets.

*Italic: Source — wp1899 (section II and surrounding sections) — IMF staff working paper content provided in the supplied PDF content.*

### 0.21 percentage points on average from one period to the next, with a median decline of -

### wp1899 - 0.21 percentage points on average from one period to the next, with a median decline of -

### Key empirical facts and aggregate changes
- ROA declined on average by 0.21 percentage points from one period to the next, with a median decline of -0.06 percentage points, driven by a tail of banks with large declines in ROA.
- The share of fees and commission income was approximately stable on average, but with significant heterogeneity across banks.
- The share of wholesale funding: average decline of 1.72 percentage points; median decline of 0.87 percentage points; large dispersion across banks.
- Ratio of non-interest expenses to total assets declined, indicating widespread cost cutting.
- The ratio of non-performing loans (NPL) to gross loans increased on average by 3 percentage points.

### Pairwise correlations (summary)
- Low correlation between ROA and ROE, implying substantial changes in bank leverage over the sample.
- ROA positively correlated with asset growth and capitalization (tangible common equity to tangible asset).
- ROA negatively correlated with level of NPLs and change in NPLs.
- Change in ROA positively correlated with change in operating expenses.

### Panel regressions — determinants of changes in profitability
- Initial profitability (previous period ROA) enters negatively: higher past profits predict larger subsequent profit declines (mean reversion).
  - A 100-basis points higher initial ROA is associated with an additional decline in profits of some 80 basis points in the subsequent phase of the financial cycle.
- Asset growth negatively associated with subsequent change in ROA.
  - A ten percentage-point higher asset growth in the previous phase is associated with a subsequent decline in profitability of an additional 12 basis points.
  - Unweighted average decline in ROA in the sample is 21 basis points.
- Capitalization (TCE/TA) positively associated with subsequent ROA but effect is small:
  - An increase in tangible capital ratio of 1 percentage point raises ROA by slightly over 4 basis points.
  - Coefficient significant only at the 10 percent level.
- Period effects:
  - Crisis period associated with decline in ROA of some 50 basis points.
  - Post-crisis period associated with a further decline of some 50 basis points.
- Regional effects:
  - “Other EU” dummy negative and significant: estimated 18 basis points lower change in profits than Nordic banks over the full cycle (Nordics omitted).
- Interaction of region and period:
  - EC-6 and Eastern EU had higher profit growth than Nordics during the boom but this reversed during the crisis.
  - EC-6 * crisis coefficient: -0.584***.
  - Eastern EU * crisis coefficient: -0.781***.
  - Eastern EU * post crisis coefficient: -1.307**.
- Macroeconomic variables (when included instead of region dummies):
  - Stock price growth positive for bank profits (coefficient 1.544*** reported).
  - Spread to Bunds negative for profits (coefficient -0.109*** reported).
  - Deposit rate minus short-term rate: widening associated with declining profitability (coefficient -0.237* in one specification).
  - Real GDP growth not significantly correlated with bank profitability changes in primary specifications.
- Contemporaneous bank-level changes:
  - Changes in share of fee & commission income: not systematic in most specifications.
  - Reduction in wholesale funding correlated with stronger profit growth (or smaller decline):
    - Wholesale funding change coefficient: about -0.0132*** (i.e., decline in wholesale funding associated with higher ROA change).
    - Magnitude: a 5-percentage point decline in wholesale funding to assets → increase in ROA of 8 basis points.
  - Operating cost efficiency:
    - Lowering non-interest expenses / TA by 100 basis points → increase in ROA by some 30–40 basis points.
  - Asset quality:
    - A 5 percentage points increase in NPL ratio → additional decline in ROA by more than 30 basis points.

### Cross-sectional regressions — phases of the financial cycle
- Mean reversion strongest in transitions:
  - Boom to crisis and crisis to post-crisis show pronounced mean reversion.
  - Mean reversion smaller in pre-boom to boom transition.
- Asset growth negative relationship with subsequent profit change particularly pronounced post-crisis (significant in larger sample).
- Cost cutting and asset quality protection mattered more during crisis and post-crisis than during boom.
- Peak NPL effect on profitability occurred during the crisis period.
- Benefits of switching away from wholesale funding mainly visible in post-crisis period; small/insignificant during the crisis (possible fire-sale dynamics during crisis).

### Probit regressions — characteristics of highly profitable post-crisis banks
- Definition: highly profitable banks = top quintile of ROE distribution during post-crisis period; ROE ≥ 9 percent.
- Country-group effects:
  - EC-6 dummy significant and negative (coefficient -0.949* in one specification).
  - Other EU dummy significant and negative (coefficient -1.414*** in one specification).
  - Eastern EU coefficient reported as 0.543 in one specification (not statistically significant across all).
- Macro variables (post-crisis averages):
  - Short-term interest rate positive and significant (ST rate coefficient 0.841*** in one specification), implying higher short-term rates increase probability of high profitability.
  - Deposit rate minus ST rate coefficients reported as -0.395 and -0.154 in specifications (not significant across all).
- Bank-specific characteristics associated with higher probability of post-crisis high profitability:
  - Smaller size (log(assets) negative and significant: e.g., -0.193**).
  - Better loan quality (NPL/GL negative and highly significant: e.g., -0.102***).
  - Some evidence that lower reliance on interest income relates to higher profitability, though this is less robust across specifications (interest income share coefficients include -0.677, -4.224***, -4.093***).
  - Reliance on wholesale funding by itself is not robustly associated with being highly profitable (share of wholesale funding coefficients not significant across specifications).
  - Asset growth marginally significant with negative coefficient in some specifications (e.g., -0.00189*).

### Conclusions and interpretive findings
- 2000–2007: rapid balance sheet expansion financed by rising share of wholesale funding; leverage rose without a commensurate increase in high-quality capital; returns on equity mechanically boosted.
- From 2008: reversal—wholesale funding withdrew, banks downsized and delevered; deteriorating loan quality in some countries; state liquidity and capital injections were often necessary.
- Post-crisis: profitability remained low due to lower leverage, difficulty cutting costs while downsizing, and persistent high NPLs for some banks.
- Net interest margins remained broadly stable over the financial cycle in the sample: interest earnings and expenses fell in lockstep during downturns, leaving margins little changed.
- Low interest rate environment not yet visible in the data as large adverse effect on profitability, but prolonged low rates pose a challenge going forward.

### Policy-relevant implications and behavioral findings
- Containing NPLs materially supports profitability; differences across banks suggest credit risk management and institutional settings matter.
- Cost discipline (reducing non-interest expenses) significantly protects profits; consolidation, branch reduction, technology adoption, and compensation policies are plausible channels.
- Rapid disposal of non-performing or non-core assets during crisis may improve post-crisis profitability, but could cause macroprudential trade-offs (credit crunch, corporate insolvency).
- Reorienting funding away from wholesale markets and toward deposits associated with better post-crisis profit outcomes; the quality and orderliness of the funding shift matters (fire sales during crisis may negate benefits).
- In the post-crisis environment, higher short-term interest rates increase likelihood of banks earning ROE ≥ 9 percent, suggesting interest-rate environment matters for bank capital returns.

*Italicized source: wp1899 — IMF working paper content (extracts from Tables 8–10 and accompanying text).*

### References

### References

### Bibliographic references
- Acharya, V., and S. Steffen, 2014, “Falling Short of Expectations? Stress Testing the European Banking System,” CEPS Policy Brief No. 315.
- Alessandri, P., and B. Nelson, 2014, “Simple Banking: Profitability and the Yield Curve,” Journal of Money, Credit and Banking 47, 143–175.
- Bonaccorsi di Patti, Emilia, and Anil Kashyap, 2017, Which Banks Recover from Large Adverse Shocks, NBER Working Paper No. 23654.
- Borio, C., L. Gambacorta, and B. Hofmann, 2015, “The Influence of Monetary Policy on Bank Profitability,” BIS Working Papers, No. 514 (October).
- Borio, C, 2014, “The Financial Cycle and Macroeconomics: What Have we Learnt?”, Journal of Banking and Finance 45, 182-198.
- Busch, R., and C. Memmel, 2015, “Bank’s Net Interest Margin and the Level of Interest Rates,” Deutsche Bundesbank Discussion Paper, No. 16/2015.
- Calomiris, C. and D. Nissim, “Crisis-Related Shifts in the Market Valuation of Banking Activities,” Journal of Financial Intermediation 23, 400–435.
- Claessens, S. N. Coleman, and M. Donnelly, 2016, “Low-for-long" Interest Rates and Net Interest Margins of Banks in Advanced Foreign Economies. Federal Reserve Board of Governors International Finance Discussion Papers Notes, April 11, 2016.
- Constancio, Vitor, 2017, Challenges Faced by the European Banking Sector, speech at the Italian Banking Association, Rome, June 14.
- Demirgüç-Kunt, A., E. Detragiache, and O. Merrouche, 2013, “Bank Capital: Lessons from the Financial Crisis,” Journal of Money, Credit, and Banking, Vol. 45, No. 6, 1147–1164. 2013.
- Ennis, H., H. Fesseden, and J. Walter, 2016, “Do Net Interest Margins and Interest Rates Move Together?” Economic Brief 16–05, Federal Reserve Bank of Richmond.
- European Central Bank, “Financial Stability Review,” November 2016, Euro Area Financial Institutions.
- International Monetary Fund (IMF), Global Financial Stability Report, 2016a, October, Washington DC.
- International Monetary Fund (IMF), 2016b, France – Selected Macro-financial Issues, Country Report No. 16/228, July, Washington DC.
- International Monetary Fund (IMF), 2017a, Global Financial Stability Report, April, Washington DC.
- International Monetary Fund (IMF), 2017b, Spain Financial Sector Assessment Program – Technical Note: The Determinants of Bank Profitability, December, Washington DC.
- Kok, Christoffer, Csaba Móré and Cosimo Pancaro, 2015, Bank Profitability Challenges in Euro Area Banks: The Role of Cyclical and Structural Factors, European Central Bank, Financial Stability Review, pp. 134-145.
- McCauley, Robert N., Agustín S. Bénétrix, Patrick M. McGuire, and Goetz von Peter, 2017, Financial Deglobalisation in Banking?, BIS Working Papers No. 650, June.
- Roengpita, Rungporn, Nikola Tarashev, and Kostas Tsatsaronis, 2014, Bank Business Models, BIS Quarterly Review, December Issue, pp. 55-65.
- Sarin, N. and L. Summers, 2016, Have Big Banks Gotten Safer? Brookings Papers on Economic Activity.
- Turk, Rima, 2016, Negative Interest Rates: How Big a Challenge for Large Danish and Swedish Banks? IMF WP/16/198, Washington DC.

### Data Appendix overview
- The Data Appendix contains:
  - Table A1. Number of Banks by Country.
  - Table A2. List of G-SIBs.
  - Table A3. Initial Conditions and Changes over Time (summary statistics).
  - Table A4. Cross-correlations (variables in level and in change).

### Table A1. Number of Banks by Country (Total 114)
- Austria 12
- Belgium 3
- Cyprus 2
- Denmark 5
- Finland 1
- France 7
- Germany 19
- Greece 4
- Hungary 3
- Ireland 3
- Italy 18
- Luxembourg 3
- Netherlands 5
- Poland 1
- Portugal 5
- Romania 1
- Slovenia 2
- Spain 7
- Sweden 4
- UK 9
- Total 114

### Table A2. List of G-SIBs (Total 29)
- China: Agricultural Bank of China
- China: Bank of China
- China: China Construction Bank
- China: Industrial and Commercial Bank of China
- France: BNP Paribas
- France: Groupe Credit Agricole
- France: Societe Generale
- Germany: Deutsche Bank
- Italy: UniCredit
- Japan: Mitsubishi UFJ FG
- Japan: Mizuho FG
- Japan: Sumitomo Mitsui FG
- Netherlands: ING Bank
- Spain: Banco Santander
- Sweden: Nordea Bank
- Switzerland: Credit Suisse
- Switzerland: UBS
- United Kingdom: Barclays
- United Kingdom: HSBC
- United Kingdom: Standard Chartered
- United Kingdom: Royal Bank of Scotland
- United States: Bank of America
- United States: Bank of New York Mellon
- United States: Citigroup
- United States: Goldman Sachs
- United States: JP Morgan Chase
- United States: Morgan Stanley
- United States: State Street Corporation
- United States: Wells Fargo
- Total 29

### Table A3. Initial Conditions and Changes over Time (summary statistics)
- Variables in level
  - ROA 0.24  Median 0.31  Std. Dev. 0.80‐  Min -3.77  Max 2.86
  - Log (assets) 11.42  Median 11.25  Std. Dev. 1.52  Min 7.18  Max 14.81
  - Asset growth 7.68  Median 1.67  Std. Dev. 41.08  Min -34.99  Max 754.69
  - Wholesale funding / total funding 30.90  Median 27.89  Std. Dev. 21.11  Min 0.60  Max 100.00
  - Non performing loans / gross loans 0.00  Median 3.91  Std. Dev. 0.00  Min 0.00  Max 0.00
  - Share of interest income 6.39  Median 0.81  Std. Dev. 7.46  Min 0.00  Max 51.26
  - Tangible common equity / total equity 0.80  Median 4.63  Std. Dev. 0.27  Min -2.06  Max 4.28
- Variables in change
  - ROA -2.85  Median -0.06  Std. Dev. 125.10  Min -1490.81  Max 1470.31
  - Fees and commission inc. / total income 0.01  Median 0.01  Std. Dev. 0.09  Min -0.68  Max 0.66
  - Wholesale funding / total funding -1.83  Median -0.88  Std. Dev. 11.59  Min -83.51  Max 32.86
  - Non interest expenses / total assets -0.21  Median -0.07  Std. Dev. 1.19  Min -19.70  Max 2.36
  - Non performing loans / gross loans 2.98  Median 1.30  Std. Dev. 5.77  Min -7.99  Max 38.17

### Table A4. Cross-correlations (selected entries; variables in level and in change)
- Variables in level (pair : correlation)
  - ROA : ROE 0.1504
  - ROA : Log (assets) -0.2084
  - ROA : Asset growth 0.6842
  - ROA : Wholesale funding / total funding -0.1221
  - ROA : Non performing loans / gross loans -0.4132
  - ROA : Share of interest income -0.196
  - ROA : Tangible common equity / total equity 0.4609
  - ROE : Log (assets) -0.0404
  - Log (assets) : Asset growth -0.1704
  - Wholesale funding / total funding : Log (assets) 0.2855
  - Non performing loans / gross loans : ROE -0.0296
  - Share of interest income : Wholesale funding / total funding 0.2674
  - Tangible common equity / total equity : Asset growth 0.4082
- Variables in change (pair : correlation)
  - ROA : ROE -0.7173
  - ROA : Log (assets) -0.1557
  - ROA : Asset growth 0.1194
  - ROA : Wholesale funding / total funding -0.5918
  - ROA : Non performing loans / gross loans 0.1005
  - ROA : Fees and commission inc. / total income 0.1328
  - ROA : Non interest expenses / total assets 0.114
  - ROE : Fees and commission inc. / total income -0.0677
  - Fees and commission inc. / total income : Wholesale funding / total funding -0.0614
  - Wholesale funding / total funding : Non interest expenses / total assets 0.1972
  - Non interest expenses / total assets : Non performing loans / gross loans -0.6152
  - Non performing loans / gross loans : ROE 0.0994

*Source: wp1899 - References (Data Appendix tables and reference list).*

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_Source: https://www.imf.org/-/media/files/publications/wp/2018/wp1899.pdf_
