Environmental, Social and Governance (ESG) - Principles and Practice · Integrated Reporting Framework, Global Reporting Initiative Framework and Business Responsibility and Sustainability Reporting

GRI Reporting Principles and Materiality Explained

Updated 11 October 2026 · Fact-checked

GRI reporting principles are the rules that make a sustainability report credible: accuracy, balance, clarity, comparability, completeness, sustainability context, timeliness and verifiability. Materiality decides what goes in. Under GRI 3, you identify impacts, assess their significance, and prioritise them into material topics. A report is 'in accordance' only if it meets all nine GRI 1 requirements.

Understand GRI Reporting Principles and Materiality

The Global Reporting Initiative (GRI) Standards help an organisation report its impacts on the economy, environment and people, including human rights. Two questions sit behind every GRI report. What should we report? And how good must the reporting be? Materiality answers the first. The reporting principles answer the second.

The current Universal Standards are GRI 1 (Foundation 2021), GRI 2 (General Disclosures 2021) and GRI 3 (Material Topics 2021). GRI 1 sets out the principles for defining report quality. These are accuracy, balance, clarity, comparability, completeness, sustainability context, timeliness and verifiability. Older study notes and the 2016 Standards grouped principles differently: stakeholder inclusiveness, sustainability context, materiality and completeness for content, and accuracy, balance, clarity, comparability, reliability and timeliness for quality. In the 2021 version, stakeholder inclusiveness and materiality are no longer principles, and verifiability replaced reliability. Materiality is now handled through the GRI 3 process, and stakeholder engagement is a GRI 2 disclosure. Know both versions so you can answer whichever way the question is framed, but prefer the 2021 position.

A material topic in GRI is a topic that represents the organisation's most significant impacts on the economy, environment and people. This is impact materiality. It differs from financial materiality, which asks what affects the company's enterprise value. Do not mix the two.

GRI 3 gives a four-step process: understand the organisation's context, identify actual and potential impacts, assess the significance of those impacts, and prioritise them to decide the material topics. Stakeholders are involved throughout. You consult affected stakeholders and credible experts, and you do not rely only on management's view.

Finally, there is the claim the report makes about itself. An organisation can report in accordance with the GRI Standards, which has nine requirements, or with reference to them, which has fewer requirements and does not require the GRI 3 process. The first is the stronger claim. Both claims need a GRI content index, a statement of use and notification to GRI.

Key rules to remember

Principles for report quality (GRI 1: 2021): Accuracy, Balance, Clarity, Comparability, Completeness, Sustainability context, Timeliness, Verifiability; Eight principles. They run in alphabetical order, so memorise them as A-B-C-C-C-S-T-V. The 2016 Standards used reliability instead of verifiability, and listed stakeholder inclusiveness and materiality as content principles. Those two are no longer principles.
Meaning of the key quality principles: Accuracy = correct and detailed enough to assess impacts; Balance = positive and negative; Clarity = understandable and accessible; Comparability = across time and organisations; Completeness = enough information on material topics and boundary to assess impacts. Timeliness = regular schedule, information available in time for decisions. Verifiability = information can be checked.
GRI 3 process for material topics: Step 1 Understand context → Step 2 Identify actual and potential impacts → Step 3 Assess significance → Step 4 Prioritise and decide material topics; Impacts on economy, environment and people, including human rights. Involve stakeholders and experts.
Significance of impacts: Actual negative impact: severity. Potential negative impact: severity and likelihood. Actual positive impact: scale and scope. Potential positive impact: scale, scope and likelihood.; Severity of a negative impact = scale, scope and irremediable character. For human rights impacts, severity takes precedence over likelihood.
GRI 3 disclosures on material topics: 3-1 Process to determine material topics; 3-2 List of material topics; 3-3 Management of each material topic; Disclosure 3-3 is reported for every material topic.
In accordance with GRI: nine requirements: 1 Apply the reporting principles; 2 Report GRI 2 disclosures; 3 Determine material topics; 4 Report GRI 3 disclosures; 5 Report relevant Topic Standard disclosures for each material topic; 6 Give reasons for omission where needed; 7 Publish a GRI content index; 8 Provide a statement of use; 9 Notify GRI; Omission reasons are limited to: not applicable, legal prohibition, confidentiality constraints, or information unavailable or incomplete. 'With reference to' has its own, lighter requirements: publish a content index, provide a statement of use, notify GRI, and report the disclosures it claims to use, giving reasons for omission where applicable. The reporting principles are not formal requirements for this claim. It does not require the GRI 3 process or the GRI 2 and GRI 3 disclosures.

How to solve GRI Reporting Principles and Materiality questions

Most questions on this topic ask you to explain a principle, describe a process, or judge a company's report against GRI. Use this method for all three.

1Read the question and mark the task word: explain, describe, evaluate, or advise. This tells you whether you need a list, a process or an analysis.
2Name the source: GRI 1 for principles and the in accordance requirements, GRI 2 for stakeholder engagement and general disclosures, GRI 3 for materiality.
3State the rule first. Give the principle or step with its meaning in one line each.
4Apply it to the facts. Pick the facts in the case that match a principle or a step, and quote them.
5Test impact materiality, not financial materiality. Ask what the company's significant impacts are on people, environment and economy, and whether affected stakeholders were consulted.
6Check the claim of use: in accordance or with reference to. Count what is missing against the nine requirements.
7Conclude clearly: material topics identified, principle breached, or claim valid or invalid. Add one practical step, such as publishing the content index or documenting the process.

Quickest way: Principle, process, claim: a three-point scan

When to use it: Use this for case questions when you have limited time and the facts mix quality issues, topic selection and the GRI claim.

Scan the facts for quality failures. Only good news means balance. Vague text means clarity. Changed metrics each year means comparability. Missing data on a material topic means completeness.
Scan for topic selection. Ask who chose the topics. If management alone chose by cost or reputation, the GRI 3 process was not followed.
Scan for the claim. Look for a missing content index, statement of use or GRI 3 disclosures.
Write one short paragraph for each of the three scans, rule first and then the fact, and end with a conclusion.

Common mistakes in GRI Reporting Principles and Materiality

Treating GRI materiality as financial materiality.
Students carry over the idea of materiality from accounting, where it means what affects investors.
Fix: Write that GRI uses impact materiality, based on the organisation's significant impacts on economy, environment and people. Mention that financial materiality is a separate lens.
Listing the old 2016 principles as if they are the current GRI 1 principles.
Many notes and videos still use the 2016 grouping with stakeholder inclusiveness and materiality as principles.
Fix: Give the eight 2021 principles. Add a line that earlier versions grouped them as content and quality principles, and that stakeholder inclusiveness and materiality are no longer principles. Materiality is now handled through the GRI 3 process, and stakeholder engagement is a GRI 2 disclosure.
Confusing accuracy with completeness.
Both sound like 'getting the data right'.
Fix: Accuracy is about correct and sufficiently detailed information. Completeness is about covering all that is needed on material topics so impacts can be assessed. A report can be accurate but incomplete.
Choosing material topics only from management's priorities or survey results.
Students think stakeholder consultation is all of materiality.
Fix: Show the full GRI 3 sequence: context, impact identification, significance assessment, prioritisation. Stakeholder input feeds the process but does not replace the assessment.
Saying a company reports in accordance with GRI because it has used some GRI disclosures.
Students ignore the full list of requirements.
Fix: Check all nine requirements. Using selected disclosures without meeting them is at best 'with reference to', and that needs its own content index, statement of use and notification to GRI.
Treating omission as a free choice.
Students assume a company can skip any disclosure that is inconvenient.
Fix: Remember omission is allowed only for stated reasons: not applicable, legal prohibition, confidentiality constraints, or information unavailable or incomplete. The report must explain the reason.

Worked examples

Example 1

Himgiri Cements Ltd, an Indian company, is preparing its first GRI report. The sustainability team proposes to pick material topics from a list of last year's investor questions. Advise the company on how to determine its material topics under the GRI Standards.

Show the solution

Rule: GRI 3 (Material Topics 2021) requires material topics to be based on the organisation's most significant impacts on the economy, environment and people, including human rights.
Fact: Himgiri plans to use investor questions only. That reflects one stakeholder group's financial interests, not an impact assessment.
Step 1, understand context: map its activities and business relationships, such as limestone quarrying, kiln operations, transport and community areas near plants, and identify stakeholders.
Step 2, identify impacts: list actual and potential, negative and positive impacts, for example air emissions, water use, dust affecting nearby villages, worker safety and local employment.
Step 3, assess significance: for actual negative impacts, use severity, covering scale, scope and irremediable character. For potential negative impacts, use severity and likelihood. For actual positive impacts, use scale and scope. For potential positive impacts, use scale, scope and likelihood. Give priority to severity for any human rights impact.
Step 4, prioritise: rank the impacts and set a cut-off to select the material topics. Consult affected stakeholders and experts, and document the process.
Reporting: disclose the process (3-1), list the topics (3-2) and describe how each is managed (3-3). Investor input may be one input, but cannot be the only basis.

Answer: Himgiri should follow the four-step GRI 3 process of understanding context, identifying impacts, assessing their significance and prioritising them. It should use impact materiality with stakeholder and expert input, document the process and report GRI 3-1, 3-2 and 3-3. A list of investor questions alone is not enough.

Example 2

Sagar Textiles Ltd publishes a sustainability report stating that it is 'in accordance with the GRI Standards'. The report highlights only its tree-plantation drives and awards, omits a fire incident at a dyeing unit that injured workers, uses different emission metrics from last year without explanation, and has no GRI content index. Evaluate the claim.

Show the solution

Rule: GRI 1 requires an in accordance report to apply the reporting principles, report GRI 2 and GRI 3 disclosures, and report Topic Standard disclosures for material topics. It must also publish a content index and statement of use, and notify GRI.
Balance: the report shows only positive items and leaves out the fire incident. This breaches balance, which requires reporting both positive and negative impacts.
Completeness: worker health and safety is likely a material topic for a dyeing unit. Leaving out the incident means there is not enough information to assess the impact.
Comparability: changing emission metrics without explanation prevents comparison over time, so comparability is breached.
Documentation: there is no GRI content index. Requirement 7 is not met, so the in accordance claim fails on that ground alone.
Consequence: at best the company might say it reported with reference to GRI, but that too needs a content index, a statement of use and notification to GRI.
Recommendation: disclose the incident and the corrective action, keep metrics consistent or explain changes, complete GRI 2 and 3 disclosures, publish the content index and statement of use.

Answer: The claim is not valid. The report breaches balance, completeness and comparability and lacks a GRI content index, so it does not meet the in accordance requirements. Sagar Textiles should correct these points or change its claim to with reference to, after meeting that option's own requirements.

Exam tips

Write the principles as a list with a one-line meaning each. Examiners reward correct meaning, not just names.
State the version you follow. Say GRI 1 (2021) lists eight quality principles and note the older grouping briefly.
For process questions, always show the four GRI 3 steps in order, then tie each to the facts given.
In case questions, build the answer as provision, analysis, conclusion. Quote the fact that triggers each principle or requirement.
Always contrast impact materiality with financial materiality in one line when materiality is asked. It is a common scoring point.

Practice questions from Integrated Reporting Framework, Global Reporting Initiative Framework and Business Responsibility and Sustainability Reporting

GRI Reporting Principles and Materiality: frequently asked questions

What are the GRI reporting principles?

Under GRI 1 (2021), they are accuracy, balance, clarity, comparability, completeness, sustainability context, timeliness and verifiability. They define the quality of a sustainability report. Earlier versions also listed stakeholder inclusiveness and materiality as principles.

How is materiality defined in GRI reporting?

A material topic is one that represents the organisation's most significant impacts on the economy, environment and people, including human rights. This is impact materiality. It is different from financial materiality, which looks at effects on enterprise value.

What is the GRI process to identify material topics?

GRI 3 gives four steps: understand the organisation's context, identify actual and potential impacts, assess their significance, and prioritise them to decide the material topics. Stakeholders and experts should be involved, and the process must be disclosed.

What is the difference between in accordance with and with reference to GRI?

In accordance with is the stronger claim and needs nine requirements to be met, including applying the principles, reporting GRI 2 and GRI 3 disclosures and Topic Standard disclosures for material topics. With reference to has lighter requirements: publishing a content index, providing a statement of use, notifying GRI and reporting the disclosures it claims to use. It does not require the GRI 3 process.