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

Evolution of Sustainability Reporting: From Financial Reports to ESG

Updated 11 October 2026 · Fact-checked

Sustainability reporting evolved from financial-only disclosure to reporting on social and environmental impact. The stages are voluntary social and environmental reports, the triple bottom line (people, planet, profit), standardised frameworks such as GRI, integrated reporting, and mandatory ESG disclosures such as SEBI's BRSR. Stakeholders drove each stage by demanding non-financial information.

Understand Evolution of Sustainability Reporting

For a long time, a company reported only financial results: profit, assets, liabilities and cash flows. Shareholders and lenders were the main readers. The report told them what the company earned, not what it cost society or the environment.

This began to change as industrial accidents, pollution, labour issues and corporate scandals showed that financial statements missed real risks. Companies first published voluntary reports on their social and environmental work, often under headings such as corporate social responsibility, environment, health and safety. These reports were inconsistent and hard to compare.

The next step was the triple bottom line, a idea put forward by John Elkington in the 1990s. It asks a company to measure success on three lines: people (social), planet (environmental) and profit (economic). It widened what a company is accountable for, but it did not say how to measure or report each line.

Standardised frameworks then filled that gap. The Global Reporting Initiative (GRI) gave a common set of disclosures for sustainability reports. The International Integrated Reporting Council (IIRC) introduced integrated reporting, which links financial and non-financial information to show how a company creates value over time through several capitals. Investors then adopted the term ESG (environmental, social, governance) to assess risk and long-term value.

In India, the move went from voluntary to mandatory. Disclosure moved from the earlier Business Responsibility Report to the Business Responsibility and Sustainability Report (BRSR) required of top listed companies by SEBI. The pressure behind all of this comes from investors, regulators, customers, employees, lenders and communities. They want non-financial information because it shows risks, such as climate or governance failures, that can hit future earnings.

Key rules to remember

Triple bottom line: TBL = People (social) + Planet (environmental) + Profit (economic); A way of measuring performance on three lines, not a numerical formula. Profit is only one of the three.
ESG: ESG = Environmental + Social + Governance; The investor-side lens on non-financial factors that affect risk and long-term value.
Reporting progression: Financial-only → voluntary CSR/sustainability reports → triple bottom line → standardised frameworks (GRI) → integrated reporting → mandatory ESG disclosure (BRSR); Use this as the spine of any answer on evolution.

How to solve Evolution of Sustainability Reporting questions

Use this method for any question on how and why reporting evolved, or why companies report on sustainability.

1Read the verb. 'Trace' or 'discuss evolution' needs stages in order. 'Why' needs reasons. 'Explain' needs meaning plus an example.
2Start with the baseline: financial-only reporting and who it served.
3Name the trigger for change: scandals, pollution, social pressure and investor demand for risk information.
4Walk through the stages in order: voluntary reports, triple bottom line, GRI, integrated reporting, ESG, mandatory disclosure in India.
5For each stage, give one line on what it added that the earlier stage lacked.
6Give the stakeholder reasons: investors, regulators, customers, employees, lenders and communities each want something specific.
7Close with a one-line conclusion linking to Indian practice, such as BRSR, and the role of the company secretary.

Quickest way: Stage-and-reason grid

When to use it: Use when time is short and the question is a 5 to 8 mark theory answer.

Write the progression line from the key formulas in one sentence.
Give one or two lines per stage, starting with the reason it arose.
Add three stakeholder reasons for demanding non-financial information.
End with one line on mandatory disclosure in India.

Common mistakes in Evolution of Sustainability Reporting

Treating the triple bottom line as a profit formula with numbers
The word 'bottom line' suggests accounting.
Fix: Say it is a three-part measure of performance: people, planet, profit. It has no single arithmetic formula.
Mixing up the order of stages, for example placing GRI before voluntary reports
Students memorise names but not the logic of why each stage arose.
Fix: Remember the logic: voluntary, then conceptual (TBL), then standardised (GRI), then connected (integrated), then mandatory.
Saying sustainability reporting replaces financial reporting
The new frameworks are described as a shift away from financial-only reports.
Fix: State that it adds to financial reporting. Integrated reporting links the two.
Listing only investors as the stakeholders who want the information
ESG is often linked to investing.
Fix: Name several groups and give each a reason: regulators for compliance, employees for workplace conditions, communities for impact, lenders for risk.
Writing a history answer with no Indian link
Students stay with global names.
Fix: Finish with the Indian position: movement from voluntary to mandatory reporting under SEBI's BRSR.

Worked examples

Example 1

Trace the evolution of corporate reporting from financial-only disclosure to integrated reporting. (Model answer)

Show the solution

Baseline: companies reported only financial results for shareholders and lenders. It showed profit but not social or environmental cost.
Trigger: pollution, labour issues and scandals showed that financial statements missed material risks, so pressure grew for wider disclosure.
Voluntary stage: companies published separate social and environmental reports. They were inconsistent and hard to compare.
Triple bottom line: introduced by John Elkington, it asked companies to measure people, planet and profit.
Standardisation: GRI gave common disclosures so that sustainability reports could be compared.
Integrated reporting: the IIRC framework links financial and non-financial information to show how value is created over time.
Mandatory stage: ESG became an investor lens, and in India SEBI requires BRSR from top listed companies.

Answer: Reporting moved from financial-only disclosure to voluntary reports, then triple bottom line, standardised frameworks like GRI, integrated reporting and finally mandatory ESG disclosure such as BRSR, each stage fixing a gap in the last.

Example 2

Why is sustainability reporting important for a company, and which stakeholders demand it? (Model answer)

Show the solution

Define: sustainability reporting discloses a company's environmental, social and governance performance beyond financial results.
Reason 1, risk: non-financial issues such as climate exposure or poor governance can hurt future earnings, so investors need the information.
Reason 2, compliance: regulators such as SEBI require disclosures from listed companies, so reporting avoids penalties and action.
Reason 3, trust and reputation: transparent reporting builds confidence among customers, employees and communities.
Reason 4, access to capital: lenders and investors increasingly screen on ESG performance.
Reason 5, internal management: collecting the data helps the board spot risks and set targets.
Stakeholders: investors, regulators, lenders, customers, employees and communities, each with a distinct interest.

Answer: Sustainability reporting matters because it shows risks and long-term value that financial statements miss, meets regulatory requirements and builds trust and access to capital, and it is demanded by investors, regulators, lenders, customers, employees and communities.

Exam tips

Write evolution answers as ordered stages. Examiners look for the sequence and for what each stage added.
Always name the triple bottom line as people, planet, profit and credit John Elkington for it.
For 'why' questions, give at least four reasons and tie each to a named stakeholder.
Finish with the Indian position, SEBI's BRSR, and link to the company secretary's role in disclosure and compliance.
Keep dates out unless you are certain of them. Stages and logic earn marks, not guessed years.

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

Evolution of Sustainability Reporting in other exams

The same ground in other exams, if you are preparing for more than one or want another angle on it.

Evolution of Sustainability Reporting: frequently asked questions

What is the triple bottom line in sustainability reporting?

It is a way of measuring a company's performance on three lines: people (social), planet (environmental) and profit (economic). It widens accountability beyond profit. It does not give a single number.

Why do stakeholders want non-financial information?

Financial statements show past results, but social, environmental and governance factors can affect future earnings and reputation. Investors, regulators, lenders, employees and communities use non-financial data to judge risk and long-term value.

Is ESG the same as sustainability reporting?

Not exactly. ESG is the lens of environmental, social and governance factors, mostly used by investors. Sustainability reporting is the disclosure a company makes on these matters. The two are closely linked.

How did India move from voluntary to mandatory sustainability reporting?

Earlier, listed companies filed a Business Responsibility Report. SEBI replaced this with the Business Responsibility and Sustainability Report (BRSR), which is mandatory for top listed companies and has more detailed ESG disclosures.