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Dr Ross KurinkoLinkedIn
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15+ years on FTSE 100 & Fortune Global 500 disclosures
Canary Wharf, London
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GRI 305: Emissions·Disclosure GRI 305-3
Other indirect (Scope 3) GHG emissions
Practical guidance for preparing this disclosure. Use this card to identify the information to prepare, verify claims and organise supporting evidence. For exact requirements, always refer to the official Global Reporting Initiative source.
Legal status
Disclosure 305-3 has been superseded by Disclosure 102-7 Scope 3 GHG emissions in GRI 102: Climate Change 2025. GRI 102 applies to reports or other materials published on or after 1 January 2027. Use this page when preparing information under GRI 305-3 and consult GRI 102-7 when preparing reporting to be published from that date.
Published passport
Last reviewed 2026-08-03
Reviewed by
Dr Ross KurinkoLinkedIn
Strategic ESG Advisor · IFRS S1 & S2 / GRI / ESRS expert
GRI Certified Global Trainer · PhD, University of Cambridge · ESG-AI expert
15+ years on FTSE 100 & Fortune Global 500 disclosures
Canary Wharf, London
LRA educational guidance · Not issued or endorsed by Global Reporting Initiative
Standard
GRI 305: Emissions
Disclosure GRI 305-3 · 2016
Last reviewed
2026-08-03
LRA educational guidance · Not issued or endorsed by Global Reporting Initiative
To prepare this disclosure
Disclosure focus
This disclosure requires an organisation to report its gross other indirect (Scope 3) GHG emissions. These emissions are a consequence of the organisation’s activities but occur at sources that it does not own or control, excluding energy indirect Scope 2 emissions. They can arise across both the upstream and downstream value chain.
The disclosure requires the organisation to identify the Scope 3 categories and activities included in the calculation and to explain the calculation basis. Clearly documenting exclusions and data gaps is an LRA preparation recommendation that can help readers understand the coverage, but it is not an additional datapoint expressly required by Disclosure 305-3.
This LRA educational guidance supports disclosure preparation. For the exact requirements, always refer to the official Global Reporting Initiative source.
Before you start
Before you start
A quick mental checklist before you prepare this disclosure — tick each as you settle it.
Preparation
Key information to prepare
| Preparation field | What to capture | Evidence hint | Owner |
|---|---|---|---|
| Gross Scope 3 GHG emissions | Prepare and reconcile this field using the definitions and scope in the reviewed Disclosure focus. | Approved source records, calculation files and review evidence supporting gross scope 3 ghg emissions. | Climate / Environment / Sustainability Reporting |
| Included Scope 3 categories and activities | Prepare and reconcile this field using the definitions and scope in the reviewed Disclosure focus. | Approved source records, calculation files and review evidence supporting included scope 3 categories and activities. | Climate / Environment / Sustainability Reporting |
| Gases included | Prepare and reconcile this field using the definitions and scope in the reviewed Disclosure focus. | Approved source records, calculation files and review evidence supporting gases included. | Climate / Environment / Sustainability Reporting |
| Biogenic CO2 emissions | Prepare and reconcile this field using the definitions and scope in the reviewed Disclosure focus. | Approved source records, calculation files and review evidence supporting biogenic co2 emissions. | Climate / Environment / Sustainability Reporting |
| Base year | Prepare and reconcile this field using the definitions and scope in the reviewed Disclosure focus. | Approved source records, calculation files and review evidence supporting base year. | Climate / Environment / Sustainability Reporting |
| Emission-factor and GWP sources | Prepare and reconcile this field using the definitions and scope in the reviewed Disclosure focus. | Approved source records, calculation files and review evidence supporting emission-factor and gwp sources. | Climate / Environment / Sustainability Reporting |
| Calculation basis, assumptions and tools | Prepare and reconcile this field using the definitions and scope in the reviewed Disclosure focus. | Approved source records, calculation files and review evidence supporting calculation basis, assumptions and tools. | Climate / Environment / Sustainability Reporting |
| Documented exclusions and data gaps | Prepare and reconcile this field using the definitions and scope in the reviewed Disclosure focus. | Approved source records, calculation files and review evidence supporting documented exclusions and data gaps. | Climate / Environment / Sustainability Reporting |
＋ Show GRI 305-3 sub-elements (LRA working checklist)
Prepare and reconcile this field using the definitions and scope in the reviewed Disclosure focus.
Prepare and reconcile this field using the definitions and scope in the reviewed Disclosure focus.
Prepare and reconcile this field using the definitions and scope in the reviewed Disclosure focus.
Prepare and reconcile this field using the definitions and scope in the reviewed Disclosure focus.
Prepare and reconcile this field using the definitions and scope in the reviewed Disclosure focus.
Prepare and reconcile this field using the definitions and scope in the reviewed Disclosure focus.
Prepare and reconcile this field using the definitions and scope in the reviewed Disclosure focus.
Prepare and reconcile this field using the definitions and scope in the reviewed Disclosure focus.
How to prepare it
This disclosure requires an organisation to report its gross other indirect (Scope 3) GHG emissions. These emissions are a consequence of the organisation’s activities but occur at sources that it does not own or control, excluding energy indirect Scope 2 emissions. They can arise across both the upstream and downstream value chain.
Collect and reconcile the records for: Gross Scope 3 GHG emissions; Included Scope 3 categories and activities; Gases included; Biogenic CO2 emissions; Base year; Emission-factor and GWP sources; Calculation basis, assumptions and tools; Documented exclusions and data gaps.
Apply Disclosure 305-3 when the related topic is material and the disclosure is applicable under the relevant GRI Standard.
Draft the response using the defined terms shown in the disclosure focus; do not substitute broader internal labels.
Review the final wording against every requirement and the supporting governance or data records before sign-off.
Request the data
Request the disclosure evidence
Translate the disclosure into an internal business question — then adapt it to your organisation's own language.
Provide the reporting-period records and reconciliations for Disclosure 305-3: Gross Scope 3 GHG emissions; Included Scope 3 categories and activities; Gases included; Biogenic CO2 emissions; Base year; Emission-factor and GWP sources; Calculation basis, assumptions and tools; Documented exclusions and data gaps. Include scope, definitions, methods, assumptions, limitations, owners and approvals.
Use the organisation's own role and document names, but preserve the defined GRI terms and the scope described above.
Better request
Provide the reporting-period records and reconciliations for Disclosure 305-3: Gross Scope 3 GHG emissions; Included Scope 3 categories and activities; Gases included; Biogenic CO2 emissions; Base year; Emission-factor and GWP sources; Calculation basis, assumptions and tools; Documented exclusions and data gaps. Include scope, definitions, methods, assumptions, limitations, owners and approvals.
Draft your disclosure
Notes that turn data into a disclosure
LRA training templates — adapt them to your organisation, and check the official source before sign-off.
Method note
The disclosure requires the organisation to identify the Scope 3 categories and activities included in the calculation and to explain the calculation basis. Clearly documenting exclusions and data gaps is an LRA preparation recommendation that can help readers understand the coverage, but it is not an additional datapoint expressly required by Disclosure 305-3.
Context note
Keep mandatory GRI Requirements, GRI recommendations and additional LRA preparation controls clearly distinguished. Apply a GRI 1 reason for omission where required information cannot be reported.
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Preparation tools & forms
Professional preparation tools for GRI 305-3 — free with an LRA Community membership. Register once (it's free) and every download unlocks, together with the Disclosure Library, templates and the LRA AI Assistant.
Assurance readiness
For each claim, check the evidence
| Claim | Risk | Evidence to check |
|---|---|---|
| Gross Scope 3 GHG emissions is reported accurately and completely. | The response omits, misclassifies or overstates gross scope 3 ghg emissions. | Approved source records, calculation files and review evidence supporting gross scope 3 ghg emissions. |
| Included Scope 3 categories and activities is reported accurately and completely. | The response omits, misclassifies or overstates included scope 3 categories and activities. | Approved source records, calculation files and review evidence supporting included scope 3 categories and activities. |
| Gases included is reported accurately and completely. | The response omits, misclassifies or overstates gases included. | Approved source records, calculation files and review evidence supporting gases included. |
| Biogenic CO2 emissions is reported accurately and completely. | The response omits, misclassifies or overstates biogenic co2 emissions. | Approved source records, calculation files and review evidence supporting biogenic co2 emissions. |
| Base year is reported accurately and completely. | The response omits, misclassifies or overstates base year. | Approved source records, calculation files and review evidence supporting base year. |
| Emission-factor and GWP sources is reported accurately and completely. | The response omits, misclassifies or overstates emission-factor and gwp sources. | Approved source records, calculation files and review evidence supporting emission-factor and gwp sources. |
| Calculation basis, assumptions and tools is reported accurately and completely. | The response omits, misclassifies or overstates calculation basis, assumptions and tools. | Approved source records, calculation files and review evidence supporting calculation basis, assumptions and tools. |
| Documented exclusions and data gaps is reported accurately and completely. | The response omits, misclassifies or overstates documented exclusions and data gaps. | Approved source records, calculation files and review evidence supporting documented exclusions and data gaps. |
Evidence pack to prepare
Common reporting gaps
Using internal or approximate wording in place of the defined GRI terms.
Changing the required reporting population or denominator without explanation.
Treating GRI recommendations or LRA preparation controls as mandatory disclosure requirements.
Leaving a reported field unsupported by traceable source evidence and review records.
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Framework references
Relevant GRI requirements and related disclosures
Available framework references and nearby disclosures relevant to preparing this requirement.
GRI
GRI 305-3
within GRI 305: Emissions
Related & explore
Direct (Scope 1) GHG emissions → CardEnergy indirect (Scope 2) GHG emissions → CardGHG emissions intensity → CardReduction of GHG emissions → CardEmissions of ozone-depleting substances (ODS) → Card
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