For most Indian listed companies, this is not a choice between three frameworks; it is a decision about sequence. BRSR is a regulatory filing you must make. GRI is the global standard your report is measured against. Integrated Reporting is the architecture that makes the whole thing add up to a story about value creation. The companies that get this right run all three off one data spine. The companies that get it wrong run three parallel projects and pay for the same numbers three times.
If you need a one-line rule: BRSR answers the regulator, GRI answers the stakeholder, and Integrated Reporting answers the investor.
Why this question has become urgent in FY 2026-27
Three things have changed at once, and they have moved the ESG BRSR conversation in Indian boardrooms from “which framework should we pick?” to “how do we stop paying for the same disclosure three times?”
First, the BRSR ESG assurance net has closed. SEBI’s glide path for reasonable assurance of BRSR Core reached the top 500 listed entities in FY 2025-26 and extends to the top 1,000 listed entities in FY 2026-27. For a large cohort of companies, this is the first year in which ESG numbers face the same evidentiary standard as financial numbers.
Second, the value chain has entered scope. ESG disclosures for upstream and downstream partners, each individually accounting for 2% or more of purchases or sales by value, with the option to cap coverage at 75% of transactions, apply from FY 2025-26 voluntarily, with assessment or assurance following from FY 2026-27. Voluntary today rarely stays voluntary.
Third, the global frameworks have started converging in a way that finally rewards good design. The GSSB has granted equivalence to IFRS S2 for GHG emissions reporting under GRI 102, meaning a single set of GHG disclosures prepared under IFRS S2 can satisfy both. The Integrated Reporting Framework now sits under the IFRS Foundation, overseen jointly by the IASB and the ISSB, explicitly positioned as the connective tissue between financial statements and sustainability-related financial disclosures.
Translation: the frameworks are no longer competing for your reporting budget. They are stacking. Your job is to stack them deliberately rather than accidentally.
BRSR: the compliance floor
What it is.
The Business Responsibility and Sustainability Report is SEBI’s mandated ESG disclosure format, applicable to the top 1,000 listed entities by market capitalisation and filed as part of the annual report. It is structured around the nine principles of the National Guidelines on Responsible Business Conduct and split into Essential Indicators (mandatory) and Leadership Indicators (voluntary).
BRSR Core is the subset that carries assurance weight for nine attributes with defined KPIs:
- Greenhouse gas footprint
- Water footprint
- Energy footprint
- Embracing circularity and waste management
- Enhancing employee wellbeing and safety
- Enabling gender diversity in business
- Enabling inclusive development
- Fairness in engaging with customers and suppliers
- Openness of business
The assurance glide path:
SEBI’s December 2024 amendments introduced meaningful flexibility: the requirement became “assessment or assurance,” with Industry Standards developed by the Industry Standards Forum in consultation with SEBI. Notably, in the first year that option existed, all 94 NIFTY 100 companies analysed in KPMG India’s FY 2024-25 review still chose reasonable assurance. The market has quietly set its own bar above the regulatory one.
What BRSR is good at.
Comparability, enforcement, and forcing internal data discipline. Because it is filed and assured, BRSR does something no voluntary framework achieves: it puts ESG numbers in front of the audit committee.
What BRSR is not.
It is not a narrative. It is a form. It will not explain why your emissions rose, how your human capital strategy connects to your margin profile, or what your board decided and why. That is not a criticism of BRSR; it is a description of its design.
GRI: the impact standard
What it is.
The GRI Standards are the world’s most widely used sustainability reporting standards, used by 77% of the G250 and 71% of the N100 in KPMG’s 2024 Survey of Sustainability Reporting. The architecture is three-part: Universal Standards (GRI 1, 2 and 3, revised in 2021), Sector Standards, and Topic Standards.
What is changing.
GRI 101: Biodiversity 2024 is now effective, and GRI 102: Climate Change 2025 and GRI 103: Energy 2025 take effect for reporting periods beginning 1 January 2027, with early adoption encouraged. Companies preparing FY 2026-27 reports should be building the data collection for these now, not in 2028.
The materiality distinction that matters.
GRI applies impact materiality to the organisation’s effects on the economy, environment and people, including human rights. ISSB’s IFRS S1 and S2 apply financial materiality to sustainability risks and opportunities that affect enterprise value. BRSR sits somewhere in between: prescriptive rather than materiality-driven. Understanding which lens each framework uses is the single most useful thing a reporting team can internalise, because it explains why the same topic can be material in one report and absent from another without either being wrong.
What GRI is good at.
Depth, credibility with rating agencies and global stakeholders, and comparability across borders. If your investors, lenders or customers sit outside India, GRI is the language they read in. In KPMG’s NIFTY 100 review, 41 companies obtained GRI-aligned assurance over and above their BRSR Core requirement.
What GRI is not.
It is not mandatory in India, and it will not on its own satisfy SEBI. Nor will it, by itself, connect sustainability performance to financial performance.
Integrated Reporting: the value creation architecture
What it is.
The Integrated Reporting Framework the <IR> Framework is a principles-based framework for communicating how an organisation creates, preserves or erodes value over the short, medium and long term across six capitals: financial, manufactured, intellectual, human, social and relationship, and natural. It is now maintained under the auspices of the IFRS Foundation, with oversight shared by the IASB and the ISSB and supported by the Integrated Reporting and Connectivity Council. It is used in approximately 75 countries.
Its Indian history is longer than most people remember. SEBI advised the top 500 listed entities to adopt integrated reporting voluntarily from FY 2017-18 , nearly five years before BRSR became mandatory. Many of India’s best annual reports have been quietly integrated for the better part of a decade.
What Integrated Reporting is good at.
This is where sustainability and integrated reporting stop being separate exercises. The <IR> Framework is the only one of the three that forces you to answer the question boards actually ask: what is our business model, what does it depend on, and how is that changing? It is the discipline that turns a compliance filing into an investment case.
What Integrated Reporting is not.
It is not a disclosure checklist, and it is not assured in the way BRSR Core is. It carries no regulatory force. Used badly, it becomes six capitals of decoration wrapped around unchanged content which is exactly how it earned its sceptics.
Head-to-head: BRSR vs GRI vs Integrated Reporting
| BRSR | GRI | Integrated Reporting | |
| Status in India | Mandatory top 1,000 listed entities | Voluntary, market-expected | Voluntary; SEBI-encouraged since FY 2017-18 |
| Primary audience | Regulator, audit committee, domestic investors | Broad stakeholders, ESG raters, global buyers | Providers of financial capital, board |
| Materiality lens | Prescribed indicators | Impact materiality | Value creation over time |
| Output | Standardised filing within the annual report | Standalone or embedded sustainability report | The annual report itself, restructured |
| Assurance | Reasonable assurance / assessment on BRSR Core, per glide path | Voluntary; commonly limited assurance | Not typically assured as a whole |
| Structural unit | 9 principles, Essential + Leadership indicators | Universal + Sector + Topic Standards | Six capitals, value creation model |
| Greatest strength | Comparability and enforceability | Depth and global credibility | Connectivity and strategic coherence |
| Greatest weakness | No narrative, no connectivity | No regulatory force in India | No assurance, easy to fake |
| Best used as | The floor | The depth | The frame |
The decision framework: five questions
Rather than asking “which framework,” ask these five questions in order. The answers will assemble your reporting architecture for you.
1. Are you in the top 1,000 listed entities by market cap?
If yes, BRSR is settled; the only live questions are your assurance readiness date and your value chain data strategy. If no, you have genuine freedom of choice, and GRI is usually the better first investment because it builds the underlying data system that BRSR would later demand anyway.
2. Who is the most demanding reader of your ESG disclosure?
A domestic lender reads BRSR. A European customer reads GRI and increasingly asks about ESRS-aligned data. A long-only global institutional investor reads your integrated report and your climate disclosures. Report to your hardest reader; the others are covered by definition.
3. Do you sell into the EU?
The Omnibus I Directive, in force since March 2026, has narrowed CSRD scope substantially to roughly 1,000 employees and €450 million net turnover for EU entities, with non-EU parents captured at €450 million of EU turnover plus an EU subsidiary above €200 million, and first reporting for FY 2027. Critically for Indian suppliers, in-scope companies are now restricted in the data they may demand from smaller value chain partners. Many Indian exporters who spent 2024 panicking about CSRD are, as of 2026, out of direct scope, but their customers’ expectations have not reset. GRI remains the safest common language here.
4. Is your ESG data assurance-ready, or only presentation-ready?
This is the question that separates comfortable companies from exposed ones. In the FY 2024-25 NIFTY 100 cohort, 45 companies restated their prior-year figures, 18 of them because of methodology changes and 16 to align with the newly issued Industry Standards. Restatement is not a scandal, but it is a signal that data systems were built for reporting rather than for auditing.
5. Does your board want a compliance document or a capital markets document?
If the honest answer is compliance, do BRSR extremely well and stop. A precise, well-evidenced BRSR beats a mediocre integrated report every time. If the answer is capital markets, integrated reporting is not optional; it is the only framework that structures the answer.
Six mistakes we see most often
Running three separate projects. BRSR, the sustainability report and the annual report built by three teams to three calendars, reconciling numbers in the final fortnight. The fix is a single ESG data spine with one owner, one definition set and one restatement policy reported out to three formats.
Treating assurance as a year-end event. In the NIFTY 100 review, 30 companies completed BRSR assurance more than 50 days after their financial audit; in one case, 98 days. Assurance readiness is a controls problem, not a reporting problem, and it is solved in Q1 and Q2, not in May.
Confusing impact materiality with financial materiality. Companies routinely run one materiality assessment and then apply it to frameworks that ask fundamentally different questions. Run one exercise but resolve it into two views.
Reporting the value chain before you can govern it. The 2% threshold and 75% coverage cap make the scope tractable. What makes it risky is publishing supplier data you cannot verify, one year before assessment or assurance attaches to it.
Using the six capitals as headings. If the human capital section would read identically after deleting the phrase “human capital,” it is decoration. Integrated reporting is a thinking discipline that shows up in the strategy section, not a naming convention.
Ignoring the 2027 standards while writing the 2026 report. GRI 102 and GRI 103 take effect for periods beginning 1 January 2027. The energy and climate data architecture they assume takes more than one cycle to build.
What good looks like: one spine, three outputs
The architecture we recommend to clients preparing for FY 2026-27 is deliberately unglamorous:
Layer 1 — The data spine.
One controlled ESG dataset, with documented boundaries (standalone vs consolidated a live issue, given that 61 of 94 NIFTY 100 companies reported standalone and 32 consolidated), one methodology register, one restatement log, and audit-grade evidence trails. Built once, governed continuously.
Layer 2 — The compliance output.
BRSR, including BRSR Core, assured to a reasonable assurance standard. Non-negotiable, unremarkable, correct.
Layer 3 — The depth output.
A GRI-referenced or GRI-in-accordance sustainability report, materiality-led, covering what BRSR’s fixed indicators cannot reach and, where relevant, aligned to IFRS S1 and S2 for investors in jurisdictions phasing those in.
Layer 4 — The frame.
An integrated annual report that uses the six capitals to connect all of it to strategy, risk, governance and outlook. Not a fourth document; the container the others sit inside.
Done this way, integrated reporting and sustainability reporting stop being two line items in the budget and become one production system with three audiences. That is the entire point.
Frequently asked questions
Is BRSR the same as ESG reporting?
No. BRSR is India’s mandated ESG disclosure format under SEBI’s LODR Regulations, applicable to the top 1,000 listed entities. ESG reporting is the broader practice. BRSR ESG disclosure is one prescribed output of an ESG reporting system the regulatory minimum, not the whole discipline.
Can GRI reporting replace BRSR?
No. GRI is voluntary and cannot satisfy a SEBI filing obligation. However, a company reporting under GRI will already hold most of the underlying data BRSR requires, which is why GRI-first companies typically find BRSR compliance straightforward rather than disruptive.
Do we need reasonable assurance or is assessment enough?
SEBI permits either for BRSR Core. In practice, every NIFTY 100 company reviewed for FY 2024-25 opted for reasonable assurance. If your peer set is large-cap, assessment may be technically compliant but will read as a step down.
Is integrated reporting mandatory in India?
No. SEBI advised the top 500 listed entities to adopt integrated reporting voluntarily from FY 2017-18, and that position stands. It remains voluntary, though it is now standard practice among India’s larger listed companies.
What is the difference between sustainability and integrated reporting?
Sustainability reporting discloses environmental, social and governance performance, usually against GRI. Integrated reporting explains how that performance alongside financial, manufactured and intellectual capital creates or erodes value over time. One reports performance; the other connects it to strategy.
When does BRSR Core assurance apply to the top 1,000 companies?
FY 2026-27, following the glide path of top 150 (FY 2023-24), top 250 (FY 2024-25) and top 500 (FY 2025-26).
Are value chain ESG disclosures mandatory yet?
They apply from FY 2025-26 voluntarily, covering upstream and downstream partners individually representing 2% or more of purchases or sales, with coverage capped at 75% of transactions. Assessment or assurance follows from FY 2026-27.
Should an unlisted company report at all?
Increasingly, yes but by choice of framework rather than obligation. Unlisted suppliers to listed entities are already being asked for BRSR Core data points, and lenders are asking for GRI-aligned disclosure. Starting with the data spine, rather than a document, is the efficient path.
Where K&A comes in
We build all three: the assured BRSR, the GRI-aligned sustainability report, and the integrated annual report that ties them together from a single data architecture, so your team answers each question once. If you are entering the FY 2026-27 assurance cohort, or your reporting has grown into three projects that should be one, let’s connect.
