In the world of Islamic finance, where ethics and religion govern every transaction, a new question has emerged: does caring for the planet also care for the balance sheet? An empirical study answers with a definitive yes.
Researchers analyzed 11 Saudi Islamic banks from 2011 to 2023—a period spanning the launch of Saudi Vision 2030 to the global ESG (Environmental, Social, Governance) boom. Using panel data regression and 20 semi-structured interviews with board members, Sharia scholars, and regulators, the study reveals a clear, quantifiable link between environmental disclosure and financial performance.
The Data: What Got Measured
The study used three financial performance metrics:
- Return on Assets (ROA): How efficiently a bank uses its assets to generate profit.
- Return on Equity (ROE): Profit relative to shareholder equity.
- RAROE: Risk-adjusted return on equity (accounting for volatility).
Environmental disclosure was measured using a composite score based on carbon emissions reporting, green technology investments, and resource efficiency initiatives. Corporate governance was assessed via board environmental expertise, presence of sustainability committees, and gender diversity.
Impact of Environmental Disclosure on ROA (Panel Data Regression)
| Predictor Variable | Fixed Effects Model (Coefficient) | Random Effects Model (Coefficient) | Significance |
|---|---|---|---|
| Environmental Disclosure (ED) | 0.033 | 0.031 | 5% (Significant) |
| Board Environmental Expertise | 0.027 | 0.029 | 10% (Significant) |
| Board Gender Diversity | 0.018 | 0.021 | Not Significant |
| Bank Size (Log Assets) | 0.042 | 0.039 | 5% (Significant) |
| Capitalization Ratio | 0.115 | 0.110 | 1% (Significant) |
| GDP Growth | 0.019 | 0.017 | 10% (Significant) |
| Interest Rate | -0.026 | -0.025 | 10% (Significant) |
| Model R-squared | 45.2% | 47.5% | – |
Interpretation: A bank that improves its environmental disclosure score by 1 unit can expect its ROA to increase by approximately 0.033 percentage points, holding other factors constant. While this seems small, over a large asset base, this represents millions in additional profit. The R-squared values indicate that the model explains nearly half of all variation in financial performance.
The Governance Multiplier: Why Boards Matter
The most powerful finding emerged when the researchers tested interaction effects. Environmental disclosure alone is good. Environmental disclosure plus board members with environmental expertise is transformative.
Interaction Effect – Environmental Disclosure × Board Expertise
| Model | ED Coefficient | BEE Coefficient | ED × BEE Coefficient | R-squared |
|---|---|---|---|---|
| Model 1 | 0.025* | 0.018 | 0.042 (5% sig) | 0.480 |
| Model 2 | 0.028** | 0.020 | 0.045 (5% sig) | 0.488 |
| Model 3 | 0.030** | 0.022 | 0.048 (5% sig) | 0.495 |
*Note: *p<0.10, *p<0.05
Why this matters: The interaction coefficient (0.042–0.048) is larger than the standalone effect of environmental disclosure (0.025–0.030). This means that the combination of transparency and expertise produces a synergistic profit boost. A bank with high environmental disclosure but no board expertise will see moderate gains. A bank with both will see substantially higher gains.
Practical implication for bank CEOs: Hiring one board member with a sustainability background is not a symbolic gesture. According to this data, it is a profit-maximizing investment.
The Sharia Supervisory Board: An Untapped Asset
One of the study’s unique contributions involves the Sharia Supervisory Board (SSB). In conventional banks, governance means shareholders and regulators. In Islamic banks, SSBs ensure religious compliance. But the researchers found that SSBs can do more: they can drive sustainability.
Qualitative insight (from interview, Table 5): A senior SSB member stated, “The bank’s board environmental expertise influences green finance projects and decision-making. Our role is to ensure that these projects fulfill both Sharia principles and sustainability goals.”
The study argues that Islamic finance has a theological head start on ESG. Sharia law explicitly mandates:
- Khalifah (Stewardship): Humans are trustees of the earth.
- Adl (Justice): Fairness across generations.
- Maslahah (Public Interest): Actions should benefit the community.
Thus, environmental disclosure is not a Western import—it is a religious obligation. Banks that frame ESG as Sharia compliance rather than regulatory burden may find internal resistance evaporates.
Gender Diversity: Promising but Not Yet Proven
The quantitative data on board gender diversity showed positive but statistically non-significant coefficients (0.018–0.021). However, the qualitative interviews painted a different picture.
Key qualitative code frequency (Table 3):
- Board gender diversity: 16 mentions (as a challenge/opportunity)
- Accountability in governance: 27 mentions
- Stakeholder trust: 26 mentions
Interviewees noted that low female board representation limits sustainability perspectives. The study recommends that Saudi banks actively recruit women for boards, not as a diversity quota but as a governance improvement tool. The authors note that Saudi Vision 2030 explicitly promotes women’s economic participation, creating a policy window for change.
The Economic Context: GDP, Interest Rates, and Oil
The study controlled for macroeconomic variables, yielding important insights:
- GDP Growth (positive, 10% significance): When the economy grows, banks perform better—unsurprising. But the coefficient is small (0.017–0.019), suggesting that bank-specific factors (like governance) matter more than the economic cycle.
- Interest Rates (negative, 10% significance): Even though Islamic banks are Sharia-compliant (avoiding riba/interest), they are not immune to interest rate shocks. Higher rates increase their cost of funds (through commodity murabahah benchmarks) and reduce lending demand.
- Inflation & Bank Age: Not statistically significant. Older banks do not automatically perform better.
Critical note for investors: The negative interest rate coefficient (−0.025 to −0.027) implies that a 1% rate hike reduces ROA by approximately 0.026%. Banks with strong environmental disclosure partially hedge against this because they attract sticky, long-term ESG-focused deposits.
The Saudi Vision 2030 Connection
The study explicitly ties its findings to Saudi Arabia’s national transformation plan. Vision 2030 aims to diversify the economy away from oil, promote sustainable development, and increase transparency. Islamic banks that align with these goals receive both regulatory support and market rewards.
From the paper: “Saudi Islamic banks can lead regional and global sustainable banking by adopting these strategies to align with global sustainability trends, improve financial performance, and meet ethical finance expectations.”
The researchers argue that Saudi banks have an advantage over Western banks: they operate in a centralized regulatory environment. The Saudi Central Bank (SAMA) can mandate ESG disclosure standards more quickly than fragmented Western regulators. This could position Saudi Arabia as a global hub for Sharia-compliant sustainable finance.
The Challenges (Qualitative Findings)
Not everything is rosy. Table 3 and Table 5 highlight persistent barriers:
- Regulatory complexity (45 codes): Banks struggle to navigate overlapping Sharia, SAMA, and global ESG rules.
- Implementation costs (21 codes): Smaller banks cannot afford sustainability reporting systems.
- Resistance to change (15 codes): Some board members view ESG as a Western fad.
- Carbon reporting accuracy (22 codes): Banks fear reputational risk if they report emissions incorrectly.
But also opportunities (from Table 3):
- Competitive advantage (17 codes)
- Investor attraction (23 codes)
- Long-term value creation (20 codes)
- Green finance demand (customers want eco-friendly loans)
What This Means for Different Audiences
For Islamic bank executives:
- Stop viewing sustainability reporting as a cost center. It is a profit driver.
- Recruit at least one board member with verified environmental expertise.
- Task your Sharia Supervisory Board with issuing a fatwa (religious ruling) on the obligation of environmental stewardship.
For investors (institutional and retail):
- When comparing two Islamic banks with similar financials, choose the one with higher environmental disclosure scores.
- Look for banks that publish sustainability reports aligned with GRI or TCFD standards.
- Ask about board environmental expertise during annual general meetings.
For regulators (SAMA, Ministry of Finance):
- Standardize ESG disclosure requirements for all Islamic banks.
- Offer tax incentives or lower capital requirements for banks that achieve high disclosure scores.
- Fund training programs for Sharia scholars on ESG integration.
For customers:
- Your deposits matter. Choose a bank that publishes its environmental impact.
- Ask for green financing products (solar panels, energy-efficient homes).
Limitations of the Study
The authors are transparent about constraints:
- Saudi-only sample: Findings may not generalize to Malaysia, UAE, or Turkey.
- Pre-2024 data: The study ends in 2023, before the full impact of post-COP28 regulations.
- Self-reported disclosure: Banks control what they report. A bank with poor environmental performance could simply stay silent.
- Gender diversity not significant in quantitative data: More longitudinal data is needed.
Conclusion: The Virtuous Cycle
This study demolishes the myth that environmental responsibility hurts profitability—at least for Saudi Islamic banks. The data shows a consistent, positive, statistically significant relationship between transparency and financial performance, amplified by board expertise and supported by Sharia principles.
The authors conclude: “Environmental openness is a strategic asset that aligns with Islamic banking values.” For an industry built on ethics, that is not just good finance. It is good religion.
Reference: here
Other Articles:
