Sustainability disclosure review

Bank sustainability reports show progress, but climate and assurance gaps remain material

A review of two banking-sector integrated reports found improving sustainability narratives, but also recurring gaps in climate metrics, financed-emissions reporting, target-setting, materiality evidence, assurance scope and the connection between ESG risks and financial reporting.

Prepared: 27 May 2026 Comparative review of two banking institutions Framework lens: GRI, IFRS S1/S2 and banking-sector expectations
TM
Thuto Moyei, ACA BFP
Sustainability & Financial Reporting Analyst | Chartered Accountant (Botswana)

19

Total disclosure gaps identified

11

High-priority findings

8

Medium-priority findings

10

Cross-cutting recommendations

Article summary: The review indicates that the two institutions are moving in the right direction on integrated and sustainability reporting, but their disclosures are not yet sufficiently complete, quantified or assurance-ready for users seeking decision-useful ESG information.

Two major banking-sector integrated reports reviewed for the 2024 reporting cycle demonstrate that sustainability reporting is becoming more visible in Botswana's financial sector. Both institutions describe governance arrangements, stakeholder engagement, risk management, customer and social themes, and environmental priorities. However, the review found that the current reporting remains stronger on narrative than on quantified, standards-mapped and independently verifiable sustainability information.

The most significant gap concerns climate disclosure. Both reports discuss climate-related risks, sustainable finance and environmental responsibility, but neither provides a complete emissions profile covering Scope 1, Scope 2, relevant Scope 3 categories and financed emissions. For banks, financed emissions are particularly important because the largest climate impact often sits in lending and investment portfolios rather than in direct electricity or fuel use.

The review also found that transition plans need to become more measurable. Both institutions refer to sustainability strategy, green finance or renewable-energy ambitions, but the disclosures generally lack comprehensive baselines, interim milestones, target years, accountable owners and funded action plans.

Materiality disclosure is another area requiring improvement. Both reports refer to material matters and stakeholder considerations, yet the review found insufficient explanation of how topics were identified, scored, prioritised and approved. A stronger approach would separate financial materiality from impact materiality and show the evidence used to determine which issues matter most.

Assurance and reliability also need clearer presentation. The financial statements are supported by conventional audit processes, but the scope of assurance over sustainability information is not sufficiently explicit. This creates a risk that users may assume sustainability metrics have the same level of assurance as audited financial information.

A further banking-specific issue is the need to explain what banks can and cannot control. Banks can set lending criteria, engage clients, develop sustainable-finance products and integrate ESG risks into credit processes. However, borrower transition decisions, government policy, technology availability, market demand, prudential concentration limits and loan tenor all affect the pace and credibility of financed-emissions reductions.

Overall, the reviewed reports show progress, but they remain at a developing stage. The most valuable improvement would be a shift from broad sustainability commentary to a standards-mapped, metric-based and assurance-ready reporting package that explains both impact and financial implications.

Disclosure gap matrix

AreaInstitution AInstitution BPriority
Standards mapping and reporting basisPartial Integrated-reporting basis disclosed, but no full sustainability index.Partial GRI-labelled section visible, but completeness and mapping remain unclear.High
Materiality and stakeholder processPartial Material matters described, but impact-materiality methodology is limited.Partial Stakeholder principles discussed, but scoring evidence is weak.High
Climate and emissionsWeak / partial Early operational baseline, but full scopes and financed emissions incomplete.Weak / partial Climate narrative disclosed, but quantified GHG inventory is insufficient.High
Targets and transition planPartial Strategy disclosed, but time-bound targets are still developing.Weak / partial Broad aspirations need measurable KPIs.High
Assurance and reliabilityPartial Financial audit clear; sustainability assurance scope unclear.Partial Assurance governance discussed; metric assurance not explicit.Medium
Banking-sector transition limitationsPartial Green finance discussed, but client and policy dependencies need clearer explanation.Partial ESG risk discussed, but bank control versus client control is underdeveloped.High

Finding severity profile

High-priority gaps
11
Medium-priority gaps
8

Highest-risk disclosure themes

  • Climate metrics: incomplete operational emissions, Scope 3 and financed-emissions reporting.
  • Transition credibility: limited measurable targets, baselines, milestones and funded actions.
  • Financial connectivity: weak linkage between ESG risk, credit risk, expected credit loss, collateral values and capital planning.
  • Assurance: sustainability assurance scope not clearly separated from financial audit assurance.

Recommended reporting upgrades

  • 1. Sustainability basis of preparation: define boundary, standards, data owners, methods, estimates, restatements and assurance status.
  • 2. Standards cross-reference index: map GRI, IFRS S1, IFRS S2 and sector-specific disclosures to exact report pages.
  • 3. Materiality evidence: disclose issue universe, stakeholder inputs, scoring, thresholds, governance approval and prior-year changes.
  • 4. Climate data roadmap: expand from partial operational data to Scope 1, Scope 2, relevant Scope 3 and financed emissions.
  • 5. Measurable targets: state base year, target year, interim milestones, absolute and intensity metrics, planned actions and progress.
  • 6. Financial connectivity: explain links to credit risk, expected credit loss, impairments, collateral valuation, risk appetite and capital planning.

Priority action plan

Next 3 months

Create a standards mapping matrix, assign data owners, define reporting boundaries, identify gaps and resolve document-control weaknesses.

Next 6 months

Develop greenhouse-gas methodology, begin financed-emissions data collection, design materiality scoring and define sustainable-finance impact KPIs.

Next reporting cycle

Publish expanded climate, GRI and banking-sector disclosures with comparative data, measurable targets, transition assumptions and assurance scope.

Medium term

Integrate ESG and climate outputs into credit risk, expected credit loss, stress testing, capital planning and board reporting.