ESG Accounting
Building Reliable Sustainability Data Systems for Indian Businesses
Materiality and scope definition, GHG Protocol methodology selection, data source mapping, collection template design, internal controls over ESG data, ERP integration and dry-run validation — the system that makes every disclosure traceable.
Overview
What Is ESG Accounting and Why Has It Become Essential for Indian Companies?
Behind every credible ESG disclosure sits a system that collects, measures, validates, and records the underlying data. This system is ESG accounting — and it is the foundation without which ESG reporting is little more than guesswork dressed in green graphics. When SEBI mandated the BRSR for India's largest listed companies and then introduced assurance requirements on top, the message was clear: ESG data must be held to the same standard of accuracy and auditability as financial data. The era of qualitative sustainability narratives is over. What matters now is quantified, verified, and comparable ESG information.
N D Savla & Associates helps companies build ESG accounting systems that produce reliable, audit-ready data from day one. Our chartered accountants design measurement methodologies, implement data collection frameworks, establish internal controls over ESG data, and ensure that every number in the company's sustainability disclosures can be traced back to a documented source. We work across the full scope of ESG services — from accounting through ESG audit and reporting framework implementation.
Our approach treats ESG accounting as a discipline, not an afterthought. We apply the same principles that govern financial accounting — completeness, accuracy, consistency, timeliness, and verifiability — to every ESG metric we help our clients capture. This rigour is what distinguishes companies that merely produce ESG reports from companies whose ESG data actually withstands the scrutiny of auditors, investors, and regulators.
In India, ESG accounting has become essential because of the BRSR mandate. SEBI requires the top 1000 listed companies to report over 100 quantitative and qualitative ESG data points annually. These data points span all three pillars — from Scope 1 and Scope 2 greenhouse gas emissions to employee turnover rates to board independence ratios. Starting from FY 2023-24, the top 150 companies must also obtain reasonable assurance on select BRSR Core parameters. The Securities and Exchange Board of India has made it clear that ESG data must be produced with the same rigour as financial data — which means companies need proper ESG accounting systems, not ad hoc spreadsheets assembled at year-end.
Beyond regulatory compliance, ESG accounting serves strategic purposes. Accurate ESG data enables companies to identify operational inefficiencies — a company that accurately measures its energy consumption can identify cost-saving opportunities. It enables meaningful target-setting — you cannot commit to reducing emissions by 30 per cent if you do not know your baseline. And it enables credible stakeholder communication — investors, customers, and employees increasingly demand transparency backed by verifiable data, not aspirational statements.
Who It Applies To
Who Needs ESG Accounting Services?
Listed Companies Building BRSR Data Infrastructure
Companies subject to the BRSR mandate need to build internal systems that capture over 100 data points across environmental, social, and governance dimensions. Many of these metrics — particularly environmental ones like greenhouse gas emissions, water footprint, and waste classification — require specialised measurement methodologies that go beyond traditional financial accounting capabilities. Our firm assists companies in designing these systems from the ground up, ensuring integration with existing ERP and MIS platforms. We coordinate with our ESG assurance practice to ensure that systems are designed for auditability from the outset.
Companies Preparing for Scope 3 Emissions Accounting
Scope 3 emissions — those arising from a company's value chain, including upstream suppliers and downstream customers — are the next frontier of ESG accounting. While SEBI currently requires only Scope 1 and Scope 2 emissions reporting, global frameworks like the GHG Protocol and ISSB Standards require Scope 3 disclosures. Companies with international investors or customers in regulated markets are already being asked for Scope 3 data. Our firm assists companies in mapping their value chains, identifying material Scope 3 categories, and implementing data collection mechanisms across their supplier networks.
Mid-Sized Companies Entering Global Supply Chains
Indian companies that supply goods to multinational corporations are increasingly required to provide ESG data as a condition of doing business. European Union regulations are creating a cascade effect — EU-regulated companies must report on their supply chain ESG performance, which means their Indian suppliers must provide accurate ESG data. Our firm helps mid-sized companies establish ESG accounting systems proportionate to their size and complexity, ensuring compliance with customer requirements without creating disproportionate administrative burden.
Companies Seeking Green Finance and ESG Ratings
Accurate ESG accounting is a prerequisite for accessing green bonds, sustainability-linked loans, and favourable ESG ratings. Rating agencies and investors scrutinise the quality and consistency of ESG data — inconsistencies, gaps, or unverifiable claims can result in rating downgrades or investor disengagement. Our firm ensures that ESG accounting systems produce data that meets the standards expected by rating agencies, lenders, and investors. We also advise on the broader regulatory landscape governing sustainable finance disclosures in India.
How It Evolved
How Has ESG Accounting Evolved in India?
The CSR Spending Era (2014–2020)
The earliest form of ESG-adjacent accounting in India was the tracking of CSR spending under Section 135 of the Companies Act, 2013. Companies were required to calculate their CSR obligation (two per cent of average net profits), allocate spending to approved CSR activities, and report on utilisation. While this created basic accounting discipline around social spending, it did not require companies to measure their actual environmental or social impact — only how much money they spent. The accounting was simple: it tracked financial outflows, not non-financial outcomes.
The BRR Period (2012–2022)
SEBI's Business Responsibility Report introduced limited quantitative ESG disclosures for listed companies. However, the BRR format was largely qualitative — asking companies to describe their policies and practices rather than measure and report specific metrics. Most companies treated BRR compliance as a corporate communications exercise rather than an accounting function. ESG data was typically compiled by sustainability teams or external consultants with limited involvement from the finance and accounting function.
The BRSR Transformation (2022 Onwards)
The BRSR represented a fundamental shift in ESG accounting expectations. For the first time, Indian companies were required to report specific quantitative metrics using standardised methodologies — greenhouse gas emissions calculated using the GHG Protocol, water metrics aligned with the Water Footprint Network methodology, waste data classified according to hazardous and non-hazardous categories, and workforce data disaggregated by gender, employment type, and contractual status. The BRSR effectively created a new accounting discipline that sits alongside financial accounting and requires dedicated systems, controls, and professional expertise.
The Assurance Era (2024 Onwards)
The introduction of reasonable assurance requirements on BRSR Core parameters marks the maturation of ESG accounting as a formal discipline. Assurance means that ESG data is now subject to independent verification — the same kind of scrutiny that financial statements have always received. This requires ESG accounting systems to maintain complete audit trails, documented measurement methodologies, source data retention, and internal controls. Companies that treated ESG data as an afterthought are now facing the reality that auditors will examine their ESG numbers with the same scepticism they apply to revenue recognition or asset valuations. Our Ind AS implementation experience provides a strong foundation for building similarly rigorous ESG accounting systems.
Our Process
What Is the Step-by-Step Process for Implementing ESG Accounting?
Implementing an effective ESG accounting system follows a structured methodology that mirrors the implementation of any new accounting framework.
Materiality and Scope Definition
Methodology Selection
GHG Protocol · Water Footprint
Data Source Mapping
Data Collection Template Design
Internal Controls Framework
System Integration and Automation
Dry Run and Validation
Sector Application
How Does ESG Accounting Differ Across Industries?
Manufacturing
Manufacturing companies generate the most complex ESG accounting requirements. Environmental metrics include energy consumption by fuel type and source, direct emissions from combustion and process activities, water withdrawal by source and discharge by destination, waste generation by type and disposal method, and air and water pollutant discharges. Social metrics include safety incident rates, lost time injury frequency, and occupational health data. Our firm designs manufacturing-specific ESG accounting systems that capture these metrics at the plant level and aggregate them for corporate reporting.
Information Technology
IT companies have relatively straightforward environmental accounting — primarily Scope 2 emissions from purchased electricity for offices and data centres, and Scope 3 emissions from employee commuting and business travel. Social accounting is more significant — workforce diversity metrics, attrition rates, training investment, and data privacy practices require systematic tracking. Governance accounting covers board composition, ethics policy compliance, and cybersecurity incident reporting. Our firm assists IT companies in building lean ESG accounting systems that capture material metrics without unnecessary complexity, coordinating with our internal audit team to embed ESG data controls into existing governance frameworks.
Financial Services
Banks and NBFCs face unique ESG accounting challenges related to their financed emissions — the greenhouse gas emissions attributable to their lending and investment portfolios. Calculating financed emissions requires data from borrowers and investee companies, which may not always be available or reliable. Social metrics for financial institutions include financial inclusion indicators, customer complaint resolution rates, and responsible lending practices. Our firm assists financial institutions in developing methodologies for financed emissions accounting and integrating ESG metrics into credit risk assessment processes.
Real Estate
Real estate companies must account for the energy and water performance of their buildings, construction waste generation, green building certification status, community impact metrics, and affordable housing contributions. ESG accounting for real estate requires site-level data collection across potentially dozens of projects at different stages of development, each with different environmental profiles. Our firm designs scalable ESG accounting systems that accommodate the project-based nature of real estate operations.
Why Our Firm
Why Should You Choose N D Savla & Associates for ESG Accounting?
Chartered Accountants Approach to ESG Data
We treat ESG data with the same professional standards that we apply to financial data. Every ESG metric we help our clients capture is documented, validated, and maintained with a complete audit trail. This is not just good practice — it is essential for companies subject to assurance requirements.
System Design for Long-Term Compliance
We design ESG accounting systems that work not just for this year's report but for the foreseeable future. Our systems are built to accommodate expanding disclosure requirements, evolving methodologies, and increasing assurance scope. We leverage our experience in implementing IFRS and Ind AS frameworks to apply the same structured implementation methodology to ESG accounting.
Integration with Financial Accounting
We recognise that ESG accounting does not exist in isolation. Environmental liabilities, carbon costs, sustainability-linked loan covenants, and ESG-related asset impairments all have financial reporting implications. Our integrated approach ensures that ESG accounting and financial accounting are coordinated, consistent, and mutually reinforcing.
Practical and Proportionate Solutions
We do not over-engineer ESG accounting systems. Our solutions are proportionate to the company's size, complexity, and regulatory obligations. A mid-sized manufacturer entering its first year of ESG reporting needs a different system from a large listed conglomerate with global operations. We design accordingly.
Broader Practice
Our Broader ESG and Assurance Services
ESG accounting is the foundation — it feeds every disclosure and every assurance engagement that follows:
Frequently Asked Questions
Frequently Asked Questions About ESG Accounting
What is ESG accounting and how is it different from traditional financial accounting?
Which ESG metrics must Indian listed companies account for under the BRSR?
How does a company set up an ESG accounting system?
What role do chartered accountants play in ESG accounting?
Can ESG accounting data affect a company's financial statements?
Need expert ESG accounting support?
Talk to our ESG team — data system design, GHG accounting methodology, internal controls, ERP integration and assurance readiness.
Book a ConsultationEmail: nainitsavla@savlagroup.in | N D Savla & Associates, Chartered Accountants, Mumbai