Preparing Mid-Market Enterprises for ESG Reporting

Environmental, Social, and Governance (ESG) reporting is no longer just a concern for massive public corporations. Mid-market companies now face new mandatory climate disclosures driven by state laws, federal rules, and global standards. Preparing your business today will protect your revenue and keep you compliant.

The New Rules Affecting the Middle Market

Mid-market enterprises typically generate between $10 million and $1 billion in annual revenue. In the past, companies in this bracket could ignore climate reporting. That is no longer true due to several specific new laws.

First, the state of California passed the Climate-Related Financial Risk Act (SB 261). This law directly impacts mid-market businesses. If your company does business in California and generates more than $500 million in total annual revenue, you must submit a climate risk report by January 1, 2026. This means you need to start collecting your 2025 data immediately.

California also passed the Climate Corporate Data Accountability Act (SB 253). This law targets larger companies with over $1 billion in revenue. However, as we will explain later, this law indirectly forces smaller companies to report their data as well.

If your mid-market company has operations in Europe, you also face the Corporate Sustainability Reporting Directive (CSRD). The European Union requires US-based companies to file sustainability reports if they generate more than €40 million in the EU and have at least one large subsidiary or branch there. Phased reporting for the CSRD begins in 2025 for data collected in 2024.

Publicly traded mid-cap companies must also pay attention to the Securities and Exchange Commission (SEC). In March 2024, the SEC adopted rules requiring accelerated filers to disclose material Scope 1 and Scope 2 greenhouse gas emissions. While these rules face ongoing legal challenges, smart finance teams are preparing as if they will take effect.

The Scope 3 Trickle-Down Effect

Even if your company generates less than $500 million, you are not exempt from ESG reporting. The biggest driver of mid-market ESG adoption is the supply chain.

Large corporations must report their Scope 3 emissions. Scope 3 covers all the indirect emissions that happen in a company’s value chain. For a retail giant like Walmart or Target, Scope 3 includes the carbon emissions of every supplier that manufactures the goods they sell.

If you sell products or services to Fortune 500 companies, they will ask for your carbon footprint. Buyers are sending out ESG questionnaires through platforms like EcoVadis. If your mid-market business cannot provide accurate greenhouse gas numbers, large buyers will eventually replace you with a competitor who can. Getting your data in order is a matter of protecting your sales pipeline.

Steps to Prepare Your Business

Do not wait until a major client or a regulatory agency asks for your data. You can take specific steps right now to get your company ready.

Conduct a Materiality Assessment

Start by identifying which ESG issues matter most to your specific business and your investors. A software company might focus heavily on data privacy and server energy use. A manufacturing company will need to focus on factory emissions and waste management. Use established frameworks like the International Sustainability Standards Board (ISSB) to guide your assessment.

Establish a Carbon Baseline

You need to know your starting point. Begin by calculating your Scope 1 and Scope 2 emissions. Scope 1 includes direct emissions, like the fuel burned by your company-owned delivery vans. Scope 2 covers the indirect emissions from the electricity you buy to power your office buildings. The Greenhouse Gas (GHG) Protocol provides free calculation tools on their website to help you measure these numbers accurately.

Invest in ESG Software

Mid-market companies cannot manage compliance using complex Excel spreadsheets. The risk of human error is too high, and audits require clear data trails. You should invest in dedicated carbon accounting software. Platforms like Persefoni, Watershed, and Workiva are popular choices for the middle market. These platforms plug directly into your accounting software to convert your utility bills and travel expenses into accurate carbon metrics.

Assign Internal Ownership

Reporting will fail if no one is officially in charge. You do not necessarily need to hire a Chief Sustainability Officer. In many mid-market firms, the Chief Financial Officer (CFO) takes ownership of ESG reporting because it closely mirrors traditional financial reporting. Assign a specific team to track the data, train them on the software, and hold them accountable for meeting reporting deadlines.

The Financial Value of Early Compliance

Treating ESG reporting purely as a compliance burden is a mistake. Companies that prepare early gain a strong competitive advantage.

Private equity firms are heavily focused on sustainability data. Firms like Carlyle and KKR track the ESG performance of their portfolio companies because it reduces risk. If you plan to sell your mid-market business or raise capital, having a clean, audited ESG report will increase your valuation. Furthermore, commercial banks often offer sustainability-linked loans. These loans provide lower interest rates if your company meets specific environmental targets.

By preparing for mandatory reporting today, you secure better financing, win larger enterprise contracts, and avoid costly regulatory fines down the road.

Frequently Asked Questions

What are Scope 1, 2, and 3 emissions? Scope 1 emissions come directly from sources your company owns, like factory furnaces or company cars. Scope 2 emissions come from the generation of the electricity, heating, or cooling you purchase. Scope 3 emissions are all other indirect emissions in your supply chain, such as the waste generated in operations or emissions from business travel on commercial airlines.

Do private mid-market companies have to report ESG data? Yes, depending on their size and location. Private companies with over $500 million in revenue doing business in California must comply with SB 261. Private companies may also be forced to report data to their enterprise clients to satisfy Scope 3 requirements.

How much does ESG software cost for a mid-market company? Pricing varies widely based on your company size and the complexity of your supply chain. Basic carbon accounting platforms for smaller mid-market businesses often start around $10,000 per year. More comprehensive enterprise platforms like Workiva can cost $30,000 to $50,000 or more annually.