Short answer
The answer, before the reasoning
For a bank, IFRS S2 financed-emissions disclosure is not only a greenhouse-gas inventory exercise. The bank must disclose absolute gross financed emissions, disaggregated by Scope 1, Scope 2 and Scope 3 for each industry by asset class, together with gross exposure, portfolio coverage, exclusions and the calculation methodology.
The useful disclosure then connects those metrics to transition and physical risk, credit analysis, portfolio concentrations, risk appetite, client engagement, capital allocation and climate targets. Financed emissions indicate exposure; they do not replace borrower-level credit judgement.
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PUBLIC ARTICLE
In practice
FORMAT
| FORMAT | LANGUAGE | VERSION |
|---|---|---|
| Sector deep guide and data-control tool | British English | 1.0 • 1 August 2026 |
Rule
WHO THIS IS FOR
Commercial-bank sustainability, finance, credit-risk, portfolio-management, data, internal-audit and investor-relations teams, together with consultants and assurance-readiness reviewers.
Technical status
STANDARD STATUS
The original IFRS S2 requirements apply for annual reporting periods beginning on or after 1 January 2024. The December 2025 greenhouse-gas amendments, including paragraphs 29A-29C and B62A, apply for periods beginning on or after 1 January 2027, with earlier application permitted. A bank should state which version it has applied and check local adoption requirements.
Financed emissions are an exposure indicator - not a credit score
Banks are exposed to climate-related risk through borrowers, counterparties, projects and securities as well as through their own operations. A carbon-intensive counterparty may face policy, technology, demand, litigation or reputation pressures. A geographically concentrated loan book can also face physical hazards that affect collateral, operations, revenues or insurance availability. IFRS S2 therefore treats financed emissions as information about the emissions associated with financial activities and as a possible indicator of exposure to climate-related risks and opportunities.
The metric remains only one part of the analysis. Two borrowers with similar attributed emissions can have very different transition pathways, margins, technologies, contractual protections and repayment capacity. Conversely, a low current emissions number can obscure a high physical-risk concentration, financed growth in a carbon-intensive activity or poor data coverage. The bank should connect the inventory to the credit and strategy story without presenting financed emissions as a mechanical probability-of-default measure.
Figure 1. The portfolio calculation becomes decision-useful only when its population, exposure, credit-risk and strategic connections are controlled.
Rule
PRACTITIONER PRINCIPLE
Use financed emissions to locate and explain concentrations, data gaps and transition exposure. Keep the borrower-level credit decision separate and supported by forward-looking financial, operational and collateral evidence.
What IFRS S2 requires a commercial bank to disclose
The bank also applies the general IFRS S2 greenhouse-gas requirements. It discloses its measurement approach, inputs and assumptions, why they were selected, changes during the period, the categories included in Scope 3 and information about the characteristics and verification of Scope 3 inputs. The current issued text permits an entity to limit Scope 3 Category 15 to financed emissions and to exclude emissions attributable to derivatives for that limitation, but the treatment and excluded financial activities must be explained.
In practice
| REQUIRED ELEMENT | COMMERCIAL-BANKING APPLICATION | CONTROL QUESTION |
|---|---|---|
| Absolute gross financed emissions | Disaggregate attributed emissions by Scope 1, Scope 2 and Scope 3 for each industry by asset class. | Can every reported cell be traced to a controlled portfolio population, emissions input and allocation calculation? |
| Gross exposure | Report exposure to each industry by asset class in the presentation currency of the financial statements. Funded amounts use funded carrying amounts before loss allowance. | Does the exposure population reconcile to the general ledger or an approved finance subledger before impairment allowance? |
| Undrawn commitments | Report the full amount of undrawn loan commitments separately from the drawn portion. | Are drawn and undrawn amounts separately identified, and is the undrawn financed-emissions coverage percentage disclosed? |
| Coverage percentage | Report the percentage of gross exposure included in the financed-emissions calculation and explain exclusions if coverage is below 100%. | Can the bank reproduce the numerator and denominator and explain excluded asset types? |
| Risk mitigants | For funded amounts, gross exposure excludes the effects of risk mitigants. | Has collateral, guarantee or hedging treatment been kept out of the gross-exposure denominator required for this disclosure? |
| Methodology | Explain the calculation and allocation method used to attribute emissions relative to exposure. | Are methodology, data hierarchy, allocation factors, estimates, changes and limitations documented? |
| Industry classification | Use a system that enables users to understand transition-risk exposure; prioritise a commonly used system when equally useful; disclose the system and rationale. | Does the mapping reflect the counterparty activity driving risk and remain comparable across periods? |
| Asset classes | Include loans, project finance, bonds, equity investments and undrawn loan commitments; explain any additional asset classes. | Does the disclosure table preserve the required classes rather than aggregating them into one portfolio total? |
Rule
VERSION CONTROL
For reporting periods before the 2025 amendments become mandatory, the bank must distinguish the requirements in the version adopted in its jurisdiction from any amendments it has early applied. The article uses the current December 2025 issued text.
Build a controlled portfolio population before calculating emissions
The most common failure is to begin with an emissions-data vendor extract and then attempt to infer the disclosure population. Start instead with the bank’s controlled financial exposures. Create a stable record for each facility or security, map it to the relevant customer or project, classify the asset class and industry, determine funded and undrawn exposure, and only then attach emissions and allocation data.
1. Freeze the reporting-date portfolio population and reconcile funded and undrawn exposure to controlled finance and credit systems.
2. Map each exposure to an asset class and an industry classification that supports transition-risk analysis.
3. Identify duplicate, syndicated, participated, securitised, transferred, written-off or restructured exposures and document their treatment.
4. Attach counterparty or project emissions data, data year, source, verification status and estimation method.
5. Calculate attributed emissions using the approved methodology and retain allocation inputs.
6. Aggregate by scope, industry and asset class; calculate coverage using controlled numerators and denominators.
7. Perform finance, emissions-methodology and portfolio-owner review before drafting the public table.
In practice
| REGISTER FIELD | PURPOSE | EXAMPLE CONTROL |
|---|---|---|
| Stable customer / facility / instrument ID | Supports reconciliation, deduplication and repeatable updates. | Prevent one borrower from appearing under multiple aliases or systems without a master mapping. |
| Asset class | Preserves loans, project finance, bonds, equity investments and undrawn commitments. | Apply documented rules for hybrid instruments and changes in instrument status. |
| Industry and classification version | Enables transition-risk disaggregation and comparability. | Record original customer code, mapped code, rationale, effective date and reviewer. |
| Funded carrying amount before loss allowance | Creates the required funded gross exposure denominator. | Reconcile to finance records before expected-credit-loss allowance; document foreign-currency conversion. |
| Undrawn commitment | Preserves the full commitment separately from drawn exposure. | Reconcile to limits and facility systems; distinguish cancellable or expired facilities according to the bank’s approved population policy. |
| Emissions scopes and reporting year | Connects attributed Scope 1, 2 and 3 emissions to the source period. | Record whether data are reported, estimated, modelled or proxied and whether verified. |
| Allocation factor and denominator | Shows how the bank’s share of counterparty or project emissions was attributed. | Retain exposure, enterprise value or project-cost inputs and calculation version. |
| Coverage and exclusion reason | Explains missing portfolio segments. | Use controlled reason codes; separate unavailable data from excluded asset classes or methodological limitations. |
| Data owner and reviewer | Creates accountability. | Separate preparation, methodology review and finance reconciliation where practical. |
Rule
LRA IMPLEMENTATION TOOL
The portfolio register is not a prescribed IFRS template. It is a practical control that supports completeness, calculation, reconciliation, disclosure and future assurance.
Use estimation transparently and improve data quality over time
Scope 3 information will frequently contain estimates. IFRS S2 does not require perfect counterparty data before disclosure. It requires a measurement approach, inputs and assumptions that faithfully represent the measurement, using reasonable and supportable information available without undue cost or effort. The Scope 3 framework prioritises direct measurement, activity-specific data, timely and representative information and verified inputs, while recognising that secondary data and industry averages may be necessary.
PCAF can provide a practical financed-emissions methodology and data-quality framework, but IFRS S2 does not prescribe PCAF. A bank using PCAF, another jurisdictionally required method or an internally developed method still needs to satisfy the IFRS S2 disclosure requirements and explain the method and allocation choices. The public wording should not imply that use of a recognised methodology removes the need for entity-specific boundaries, exclusions or data-quality disclosures.
In practice
| DATA LEVEL | TYPICAL SOURCE | DISCLOSURE / CONTROL TREATMENT |
|---|---|---|
| Counterparty-reported and externally verified | Published inventory or assured counterparty disclosure. | Record scopes, boundary, period, standard, verification scope and any restatement. |
| Counterparty-reported but unverified | Borrower questionnaire, annual report or direct submission. | Run plausibility and consistency checks; identify whether the data cover the financed activity. |
| Activity-specific estimate | Production, energy, asset, project or physical-activity data converted using emission factors. | Document activity source, factor source, jurisdiction, technology and data year. |
| Financial or sector proxy | Revenue, asset, project-cost or industry-average model. | Identify model version, classification, currency/inflation treatment, uncertainty and planned remediation. |
| No usable estimate after every reasonable effort | Rare impracticability case. | Explain how the bank is managing the relevant Scope 3 exposure rather than silently excluding it. |
In practice
| MYTH | Estimated financed emissions are too unreliable to report. |
|---|---|
| REALITY | IFRS S2 anticipates estimation in Scope 3. The bank should use the best reasonable and supportable inputs available, disclose the approach and limitations, and improve the data hierarchy rather than wait for perfect borrower data. |
Connect financed emissions to credit risk and enterprise risk management
A decision-useful disclosure explains whether and how portfolio climate information informs the bank’s risk process. IFRS S2 asks for the inputs and parameters used to identify, assess, prioritise and monitor climate-related risks, the use of scenario analysis, the assessment of nature, likelihood and magnitude, prioritisation relative to other risks and integration into overall risk management. It does not prescribe a specific credit-rating model or require financed emissions to be inserted mechanically into probability of default or loss given default.
In practice
| RISK PROCESS | POSSIBLE CLIMATE INPUT | EVIDENCE TO RETAIN |
|---|---|---|
| Origination and due diligence | Sector transition pathway, borrower emissions, transition plan, energy mix, physical location and insurance. | Credit policy, sector guidance, borrower questions, analysis and approval record. |
| Risk grading | Potential revenue, cost, capex, asset-value, collateral or business-model effects. | Model or expert-judgement methodology, overrides and validation. |
| Portfolio limits and appetite | Concentrations by industry, geography, technology, financed emissions or transition classification. | Risk appetite, limit design, breach and escalation records. |
| Pricing and terms | Expected transition costs, covenants, use-of-proceeds conditions or information undertakings. | Pricing governance, covenant language and monitoring evidence. |
| Monitoring and watchlist | Target progress, regulatory change, carbon price, incidents, climate hazards and data deterioration. | Trigger catalogue, watchlist decisions and remedial action. |
| Stress testing and scenario analysis | Macroeconomic, sector, policy, technology and physical-hazard pathways. | Scenario sources, assumptions, exposure mapping, model limitations and management response. |
| Expected credit loss and financial reporting | Climate information relevant to forward-looking scenarios, credit deterioration, collateral or overlays. | Finance-risk reconciliation and documented judgement; avoid claiming automatic accounting effects. |
Rule
IMPORTANT DISTINCTION
A financed-emissions concentration can be a screening and monitoring signal. The final credit conclusion requires borrower-specific and forward-looking analysis. Conversely, a portfolio can face material physical or transition risk even where financed-emissions data are incomplete or currently low.
Link climate metrics to strategy, targets and capital allocation
IFRS S2 asks for more than greenhouse-gas information. Cross-industry metrics cover the amount and percentage of assets or business activities vulnerable to transition and physical risk, aligned with climate-related opportunities, and the amount of financing or investment deployed towards climate-related risks and opportunities. A bank should explain how the metrics used are connected to where risk is concentrated, how the business model is changing and how resources are allocated.
Targets should not be detached from risk appetite and client strategy. A target can affect sector priorities, origination, engagement, product design and capital deployment, but the bank should explain dependencies and trade-offs. Portfolio movement can result from client decarbonisation, new lending, repayments, sales, refinancing, foreign exchange, data changes or methodology changes. Progress analysis should distinguish these effects rather than attributing every movement to real-world emissions reduction.
In practice
| METRIC OR TARGET | STRATEGIC QUESTION | GOOD DISCLOSURE CONNECTION |
|---|---|---|
| Financed emissions by industry and asset class | Where is current attributed emissions exposure concentrated? | Explain which portfolios drive the total and why those concentrations matter to the bank’s strategy. |
| Gross exposure and coverage | How much financial exposure is represented and where are data gaps? | Connect coverage improvement to client-data plans and risk-management priorities. |
| Assets vulnerable to transition risk | Which exposures could be affected by policy, technology or market change? | Explain the classification method, time horizon and relationship to limits or engagement. |
| Assets vulnerable to physical risk | Which borrowers, projects or collateral are exposed to acute or chronic hazards? | Connect geospatial/scenario analysis to portfolio actions and resilience. |
| Capital deployment / financing | What financing is directed towards risk response or opportunity? | Define qualifying finance, reconcile the amount and explain how it supports the strategy. |
| Sector or portfolio target | What outcome is the bank seeking, for which portfolio and by when? | Disclose metric, objective, boundary, base period, milestones, methodology, revisions and performance. |
Rule
TARGET ANALYSIS
For each material target, retain a bridge explaining operational counterparty change, portfolio composition, financing activity, methodology change, data-quality change and carbon-credit reliance where relevant.
Hypothetical case: power-generation portfolio
The bank should not conclude simply that climate performance deteriorated. It analyses the movement bridge, transition-risk concentration, borrower plans, maturity profile, covenants and scenario results. It decides to retain exposure to two gas utilities with approved transition investments and enhanced monitoring, stops new financing for certain high-risk activities under its sector policy, and creates a client-data programme for undrawn facilities. The strategy narrative explains those decisions, the limits of the financed-emissions metric and the link to capital allocation.
The stronger wording is useful because it connects performance, portfolio concentration, data coverage and actual decisions. The numbers are illustrative and must not be copied into a real disclosure.
Hypothetical scenario
HYPOTHETICAL SCENARIO
A regional bank has a power-generation portfolio comprising renewable developers, gas-fired utilities and one coal-related project-finance exposure. Coverage is 86% of funded gross exposure and 42% of undrawn commitments. The bank’s financed emissions rose 9% although several clients reduced their emissions, mainly because a large acquisition facility closed late in the year and the bank improved Scope 3 data coverage.
Illustrative only. It shows how the decision is made, not wording that can be copied or relied on.
In practice
| WEAK WORDING | STRONGER ILLUSTRATIVE WORDING |
|---|---|
| We measured financed emissions and remain committed to supporting the transition. | Financed emissions for the power-generation portfolio increased by 9%. Approximately six percentage points arose from a new acquisition facility and two points from improved Scope 3 coverage; counterparty operational changes reduced the total by approximately one point. The portfolio represented 14% of funded commercial-banking exposure and 31% of financed emissions. During the period, the Credit Risk Committee introduced sector-specific information requirements, approved enhanced monitoring for two gas utilities and restricted new financing for defined high-transition-risk activities. Coverage of funded exposure was 86%; the principal exclusions were smaller private borrowers without sufficient activity data. These limitations and the planned data-remediation programme are described below. |
In practice
Assurance-ready controls and common reporting errors
| CONTROL | CONTROL OBJECTIVE | MINIMUM EVIDENCE |
|---|---|---|
| Population completeness | All in-scope funded and undrawn exposures are included once. | Finance reconciliation, population rules, duplicate report and exception log. |
| Industry and asset-class mapping | Disaggregation is consistent, relevant and comparable. | Mapping table, classification version, rationale, overrides and reviewer approval. |
| Exposure calculation | Funded and undrawn amounts follow the required basis. | Source extracts, currency conversion, reconciliation and treatment memo. |
| Emissions inputs | Reported and estimated data are traceable and appropriate. | Source files, reporting year, scopes, verification status, factor/model version and quality assessment. |
| Allocation and aggregation | Attributed emissions are mathematically correct and not double counted. | Calculation files, model controls, independent recalculation and aggregation checks. |
| Coverage and exclusions | Percentages and excluded categories are complete and understandable. | Controlled numerator/denominator, exclusion codes, amounts and public explanation. |
| Narrative consistency | Metrics agree with credit-risk, strategy, target and financial disclosures. | Disclosure tie-out, risk committee challenge and sign-off record. |
| Change management | Method, classification and data changes are approved and disclosed where material. | Change log, impact analysis, restatement decision and approval. |
In practice
Common errors
| ERROR | WHY IT MISLEADS | CORRECTION |
|---|---|---|
| Reporting one portfolio total | It hides industries, asset classes, exposure and risk concentrations. | Preserve the required disaggregation and explain concentration. |
| Using exposure after loss allowance or risk mitigants | It does not follow the required gross-exposure basis. | Reconcile to funded carrying amounts before loss allowance and exclude risk-mitigant effects for funded exposure. |
| Combining drawn and undrawn facilities | Coverage and exposure cannot be understood. | Present full undrawn commitments separately and disclose their coverage separately. |
| Treating missing emissions as zero | It understates emissions and obscures data quality. | Estimate where feasible, disclose limitations and retain an improvement plan. |
| Equating lower financed emissions with lower credit risk | Portfolio sales or data changes can reduce the metric without improving borrower resilience. | Connect the metric to borrower, scenario and financial analysis. |
| Publishing a target without portfolio boundary | Users cannot understand what is managed or excluded. | Disclose target metric, scope, asset class, sector, base period, milestones and progress method. |
| Claiming the calculation is assured without scope detail | The public may infer broader assurance than was performed. | State the subject matter, period, methodology, coverage, level and provider according to the assurance engagement. |
In practice
| MYTH | A complete financed-emissions inventory proves that the bank has integrated clim |
|---|---|
| REALITY | The inventory is evidence of measurement. Integration requires separate evidence that climate information affects identification, assessment, prioritisation, monitoring, risk appetite, credit decisions and strategy. |
Readiness
Final disclosure checklist
- • ☐ The funded and undrawn portfolio populations reconcile to controlled financial and credit systems.
- • ☐ Financed emissions are disaggregated by Scope, industry and asset class.
- • ☐ Gross exposure follows the required basis and separately presents undrawn commitments.
- • ☐ Coverage percentages, exclusions and additional asset classes are transparent.
- • ☐ The industry-classification system and selection rationale are disclosed.
- • ☐ Methodology, allocation, inputs, assumptions, estimates and changes are described.
- • ☐ The disclosure connects financed emissions to transition and physical risk, credit process, portfolio concentration and strategy.
- • ☐ Targets identify portfolio boundary, metric, base period, milestones, methodology and performance drivers.
- • ☐ Population, calculation, narrative and change controls are retained for review or assurance readiness.
- • ☐ The applied IFRS S2 version, amendment status and any first-year Scope 3 relief are clearly stated.
Bottom line
A bank’s IFRS S2 disclosure is strongest when the financed-emissions table is the controlled starting point for a wider explanation of gross exposure, portfolio concentration, credit-risk integration, strategic response, targets and data limitations. The metric should illuminate decisions without being presented as a substitute for borrower-level credit analysis.
Official source anchors
The source set below should be rechecked as part of the pre-publication update control. Normative conclusions are based on current official IFRS Foundation and ISSB sources. Registers, templates, workflow steps and control suggestions identified as LRA practice are implementation aids rather than prescribed IFRS templates.
1. IFRS S2 Climate-related Disclosures. Current December 2025 issued text; paragraphs 13-16, 24-37 and B38-B62A, including commercial-banking financed-emissions requirements. Open official source
2. Amendments to Greenhouse Gas Emissions Disclosures. December 2025 amendments; Category 15 limitation, derivative treatment and industry-classification changes effective from 2027 unless early applied. Open official source
3. Industry-based Guidance on Implementing IFRS S2 - Commercial Banks. Commercial-banking climate disclosure topics and industry metrics, including incorporation of environmental factors in credit analysis. Open official source
4. PCAF Global GHG Accounting and Reporting Standard Part A - Financed Emissions. Third edition, 2025. Optional implementation methodology; not prescribed by IFRS S2. Open official source
5. GHG Protocol Technical Guidance - Category 15 Investments. Calculation guidance for Scope 3 Category 15. Open official source
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