Food Waste Reporting: ESG Rules for Retailers in 2026

You cannot report what you do not measure

Somewhere in your organization right now, there is a spreadsheet that purports to track food waste. It was probably created by an operations manager who was asked by someone in corporate to "get some numbers together" for an investor presentation or a sustainability page on the company website. The spreadsheet contains estimates. The estimates are wrong. Not wrong in the sense that the decimal point is in the wrong place -- wrong in the sense that they capture maybe 30-40% of actual waste, miss entire categories of loss, and conflate generation with disposal in ways that make the data almost useless for the regulatory filings that are about to become mandatory.

This is not a criticism of the operations manager. It is a description of the state of food waste measurement across the retail industry as of early 2026. The vast majority of retailers -- including many large chains -- do not have systems capable of producing the granular, auditable, category-level food waste data that multiple regulatory frameworks now require or will require within the next 12-24 months.

If you are an operations director, sustainability lead, or CFO at a mid-size or large retailer, this is the article where I explain what is coming, what you need to measure, and how to build a measurement system from scratch before the deadlines arrive.

The regulatory landscape: What is actually mandatory (and what is about to be)

SEC Climate Disclosure Rules

The SEC's climate-related disclosure rules, finalized in March 2024, require publicly traded companies to disclose material climate-related risks and their financial impact. For food retailers, food waste is a material climate risk for two reasons: it represents direct financial loss (cost of goods sold that generates zero revenue), and it contributes to greenhouse gas emissions when organic waste decomposes in landfills (methane, which has roughly 80 times the warming potential of CO2 over a 20-year period).

The rules require disclosure of Scope 1 and Scope 2 emissions, with Scope 3 reporting required for companies that have set Scope 3 targets or where Scope 3 emissions are material. For food retailers, waste-related emissions frequently fall under Scope 3 Category 5 (Waste Generated in Operations). If your waste ends up in a landfill generating methane, that is a reportable emission. If you divert it to composting or anaerobic digestion, that is a different (and lower) emission factor. The distinction matters for your filing, and making the distinction requires knowing not just how much you wasted but where it went.

While the SEC rules have faced legal challenges and the compliance timeline has been adjusted, the direction of travel is clear: climate-related financial disclosure is becoming standard, and food waste is a material component of that disclosure for anyone in the food supply chain.

EU Corporate Sustainability Reporting Directive (CSRD)

If you operate in or sell into the European Union, the CSRD is not optional and it is not coming -- it is here. The directive, which began phasing in for large companies in fiscal year 2024, requires detailed sustainability reporting under the European Sustainability Reporting Standards (ESRS). For food retailers, the relevant standards include ESRS E1 (Climate Change), ESRS E5 (Resource Use and Circular Economy), and ESRS S3 (Affected Communities).

The CSRD is notable for two things that distinguish it from earlier sustainability reporting frameworks. First, it requires double materiality assessment -- you must report on both how sustainability issues affect your business and how your business affects sustainability outcomes. Second, the reported data must be auditable. Not "auditable" in the sense of "we can explain how we got these numbers if someone asks." Auditable in the sense of "a third-party assurance provider will verify these numbers to the same standard as financial statements."

For food waste, this means you need measurement systems that produce data with a clear audit trail: when waste was generated, what type of product it was, how much it weighed (or its retail/wholesale value), and what happened to it (landfill, composting, donation, animal feed, anaerobic digestion). Estimates and back-of-envelope calculations will not survive an audit.

California SB 253 and SB 261

California's Climate Corporate Data Accountability Act (SB 253) requires companies with annual revenues exceeding $1 billion that do business in California to report Scope 1, 2, and 3 greenhouse gas emissions starting in 2026 (for Scope 1 and 2) and 2027 (for Scope 3). SB 261 requires climate-related financial risk reports from companies with revenues over $500 million.

For food retailers, the Scope 3 requirement is particularly significant because waste disposal emissions are Scope 3. A grocery chain with $2 billion in revenue that generates 15 million pounds of food waste annually and sends 60% of it to landfill has a meaningful Scope 3 reporting obligation that requires granular waste data.

Even if you are not a billion-dollar company, California's legislation signals where state-level regulation is heading. Washington, New York, and Illinois have similar bills in various stages of the legislative process.

Investor and buyer pressure (the requirements that do not have legal force but have economic force)

Beyond regulatory mandates, two market forces are making food waste reporting effectively mandatory for any retailer that wants to maintain access to capital and shelf space:

Institutional investors increasingly use ESG ratings as investment screening criteria. A 2025 Morgan Stanley survey found that 77% of institutional investors considered sustainability data when making investment decisions, up from 58% in 2021. Food waste is a standard metric in food retail ESG assessments. If you cannot report it accurately, your ESG score suffers, your cost of capital rises, and your access to certain investment pools narrows.

Retail buyers at major chains are increasingly requiring sustainability data from their suppliers. If you are a food distributor or mid-size retailer that sells to larger chains, you may already be receiving questionnaires about your waste diversion rates, donation percentages, and emissions from waste. These are not optional questionnaires. They are purchasing criteria. A distributor that cannot demonstrate waste management capabilities may find itself replaced by one that can.

What you actually need to measure

The specific metrics vary by framework, but at minimum, a compliant food waste measurement program needs to capture data across five dimensions:

1. Waste generation by category

You need to know how much food waste you generate, broken down by product category and (ideally) by cause. The categories that most frameworks recognize:

The measurement challenge: Most retailers can tell you total shrinkage dollars. Very few can tell you what percentage of that shrinkage was expired dairy versus overproduced deli items versus damaged canned goods. This category-level breakdown is essential for both reporting and for actually reducing waste, because the interventions are completely different for each category.

2. Diversion method

Generating waste is one number. What you do with it is another, and the reporting frameworks care deeply about the distinction. The hierarchy, from most preferred to least:

• Source reduction (waste prevented entirely through better ordering, forecasting, or inventory management)
• Feeding people (donation to food banks, food rescue organizations, employee meals)
• Feeding animals (diversion to animal feed operations)
• Industrial uses (rendering, composting, anaerobic digestion for energy)
• Landfill/incineration (last resort, highest emissions)

Each diversion pathway has a different greenhouse gas emission factor, which matters for your Scope 3 calculation. Food sent to an anaerobic digester has a fraction of the emissions impact of food sent to a landfill. Donated food has essentially zero waste emissions (and may generate tax benefits under Section 170 enhanced deductions). Your measurement system needs to track not just pounds of waste but pounds by destination.

3. Financial value

Every reporting framework asks for waste in both weight/volume and financial terms. You need to know the retail value, wholesale cost, or both of the food you wasted. This connects your sustainability reporting to your financial reporting and allows investors to assess the business impact of your waste performance.

If you have an inventory tracking system that records batch-level cost data, you already have this information. If you do not, you are going to have to build it -- and building it retroactively is orders of magnitude harder than building it into your receiving and inventory processes from the start.

4. Temporal patterns

Waste reporting is not just an annual aggregate. Useful reporting (and the kind that demonstrates genuine management attention to auditors and investors) shows trends over time: monthly waste rates, seasonal variation, the impact of specific interventions. This requires consistent, ongoing measurement -- not a year-end estimation exercise.

5. Scope 3 emissions calculation

For companies subject to Scope 3 reporting requirements, you need to convert your waste quantities into CO2-equivalent emissions. The basic formula:

Emissions (tCO2e) = Waste quantity (tonnes) x Emission factor (tCO2e/tonne) x (1 - Diversion rate)

The emission factors vary by waste type and disposal method. The EPA's WARM model (Waste Reduction Model) provides standard emission factors for food waste: approximately 0.52 metric tons of CO2e per short ton of food waste sent to landfill, versus -0.09 metric tons per short ton composted (negative because composting avoids methane generation and produces a soil amendment that offsets fertilizer production).

The precision of this calculation depends entirely on the precision of your waste tracking data. If you know you sent 500 tons of mixed food waste to landfill, you can calculate a rough emissions number. If you know you sent 200 tons of produce trim to composting, 150 tons of expired dairy to anaerobic digestion, 100 tons of bakery overproduction to food banks, and 50 tons of damaged goods to landfill, you can calculate a much more accurate (and much more favorable) emissions number.

The reporting frameworks: GRI, SASB, and CDP

Three frameworks dominate sustainability reporting for food retailers. You will likely need to report under at least one; many companies report under all three.

GRI (Global Reporting Initiative)

GRI is the most widely used sustainability reporting framework globally. The relevant standard for food waste is GRI 306: Waste (2020 revision). It requires disclosure of:

• Total waste generated (by composition)
• Waste diverted from disposal (by type and recovery operation)
• Waste directed to disposal (by type and disposal operation)
• Management approach to waste (policies, targets, initiatives)

GRI 306 explicitly requires organizations to report waste "in metric tons" and to distinguish between hazardous and non-hazardous waste. For food retailers, all food waste is non-hazardous, but you still need weight-based data, not just dollar values.

SASB (Sustainability Accounting Standards Board)

SASB, now part of the IFRS Foundation through the International Sustainability Standards Board (ISSB), provides industry-specific disclosure standards. For food retailers (classified under "Food & Staples Retailing"), the relevant metrics include:

• Amount of food waste generated, percentage diverted from the waste stream
• Number of recalls issued, total weight of products recalled
• Revenue from products third-party certified to environmental or social sustainability standards

SASB metrics are designed to be financially material and decision-useful for investors. The food waste metric is explicitly linked to financial performance: waste represents both a direct cost (cost of goods wasted) and an operational efficiency indicator.

CDP (formerly Carbon Disclosure Project)

CDP runs a global disclosure system for environmental data. Their food waste questionnaire, part of the broader climate change questionnaire, asks companies to report:

• Total food waste generated (in metric tons)
• Food waste by destination (landfill, composting, anaerobic digestion, donation, animal feed)
• Food waste reduction targets and progress
• Food waste measurement methodology

CDP scores companies on a scale from A to D-minus, and these scores are used directly by institutional investors. A low CDP score can translate to higher cost of capital. In 2025, CDP added more granular food-specific questions that require category-level waste data.

Building a measurement system from scratch

If you are starting from zero -- no waste tracking, no diversion data, no batch-level inventory system -- here is a practical implementation timeline.

Month 1: Establish baseline measurement

Week 1-2: Physical waste audits. Before you install any software, you need to know what you are actually throwing away. Conduct a one-week physical waste audit: place designated, labeled bins in each department (produce, dairy, bakery, deli, meat, grocery) and have staff sort waste into them. At the end of each day, weigh each bin and log the results. This is labor-intensive and you only need to do it for one representative week.

Week 3-4: Analyze results and set categories. Take your audit data and categorize it. What percentage is spoilage versus preparation waste versus overproduction? Which departments generate the most waste by weight and by value? This baseline tells you where to focus your measurement system.

Typical findings from first waste audits:

Note the divergence between weight and value: produce dominates by weight (because lettuce and watermelon are heavy and watery) but dairy and meat dominate by value (because a pound of expired cheese costs more than a pound of expired lettuce). Your reporting needs to capture both dimensions.

Month 2-3: Implement digital tracking

This is where inventory management software becomes a sustainability reporting tool. An expiry tracking system like ShelfLifePro that records batch-level data -- product, category, quantity, cost, expiry date -- gives you the foundation for waste reporting because every item that expires and is pulled from the shelf is a documented waste event with a category, a weight (or unit count convertible to weight), a dollar value, and a timestamp.

The key integration point: Your inventory system needs a waste disposition workflow. When an item is pulled as expired or near-expired, the system should ask: what happened to it? Was it marked down and sold (source reduction -- the best outcome)? Donated to a food bank? Sent to composting? Put in the dumpster? This single data point -- what happened to the waste -- is the difference between a system that tracks loss and a system that supports ESG reporting.

What to configure:

• Waste categories aligned with your reporting framework (GRI 306 categories, SASB metrics, or both)
• Diversion pathways with their corresponding emission factors
• Automated aggregation that rolls up daily waste events into monthly, quarterly, and annual totals by category and diversion method
• Export capability in formats compatible with your reporting framework (GRI content index, SASB data tables, CDP questionnaire format)

Month 4-6: Establish diversion partnerships

You cannot report high diversion rates if you do not have somewhere to divert waste. The practical infrastructure:

Food bank partnerships. Contact your local Feeding America affiliate or equivalent food rescue organization. Most will pick up donations on a regular schedule. Under the Bill Emerson Good Samaritan Food Donation Act (and similar state-level protections), donors are protected from liability for donated food as long as donations are made in good faith. The Enhanced Tax Deduction for food donations under IRC Section 170(e)(3) allows qualifying businesses to deduct the lesser of twice the basis or the basis plus half the fair market value of donated food -- this can make donation financially superior to disposal.

Composting or anaerobic digestion. Identify commercial composting or anaerobic digestion facilities in your area. Many municipalities now offer organic waste collection. If your waste volume is large enough, you may negotiate favorable tipping fees that are lower than landfill costs, making diversion cheaper than disposal even before you account for the ESG benefits.

Animal feed. Some waste categories (particularly produce trim and bakery overproduction) are suitable for animal feed. Local farms or animal feed processors may accept this waste for free or at nominal cost.

Month 7-12: Refine and audit-proof

Your first reporting cycle will have gaps. That is expected. Use months 7-12 to:

• Fill measurement gaps. Identify categories or locations where waste data is incomplete and implement additional capture points.
• Validate against financial data. Cross-reference your waste tracking data against your shrinkage numbers, your cost of goods sold, and your physical inventory counts. The numbers should be consistent (though they will not match exactly, because waste tracking captures only one component of total shrinkage).
• Prepare for assurance. If your reporting will be subject to third-party assurance (mandatory under CSRD, likely under SEC rules), document your measurement methodology, data sources, estimation techniques (for any categories where you use estimates), and internal controls. An assurance provider will ask for all of this.

The competitive advantage of early reporting

I want to make a business case for proactive waste reporting that goes beyond compliance.

Retail buyer requirements are tightening

If you sell to Walmart, Target, Kroger, or any major chain, you have likely noticed that sustainability questionnaires are becoming longer, more specific, and more consequential. Walmart's Project Gigaton, for example, asks suppliers to set and report on waste reduction targets. Target's sustainability standards include waste diversion metrics. These are not feel-good exercises -- they are purchasing criteria that influence shelf placement, promotional support, and contract renewals.

A supplier or distributor that can provide accurate, auditable food waste data has a concrete advantage over one that submits estimates or declines to report. In a market where private label and supplier consolidation give buyers leverage, sustainability performance is becoming a tie-breaker -- and increasingly, a deal-breaker.

Insurance and financing benefits

Lenders and insurers are incorporating ESG data into risk assessment. A retailer with documented waste reduction programs and auditable sustainability data may qualify for sustainability-linked loans with favorable terms (lower interest rates tied to meeting ESG targets) or reduced insurance premiums (because lower waste correlates with better operational controls, which correlates with lower risk across multiple categories).

These financial benefits are not hypothetical. The sustainability-linked loan market exceeded $700 billion in annual issuance in recent years, and food retailers are increasingly accessing this market. But the loans require verified ESG data -- which brings you back to the measurement problem.

Consumer perception and brand value

Consumers, particularly younger demographics, increasingly factor sustainability into purchasing decisions. A 2025 NielsenIQ study found that products with sustainability claims grew at more than twice the rate of conventional alternatives. For retailers, demonstrating credible waste reduction (emphasis on credible -- consumers are increasingly skeptical of vague sustainability claims) builds brand equity and customer loyalty.

The key word is credible. Publishing a sustainability report that says "we are committed to reducing food waste" is worth approximately nothing. Publishing a report that says "we reduced food waste by 23% year-over-year, from 4.2% to 3.2% of total inventory value, and diverted 71% of remaining waste from landfill through donation and composting programs" is worth something, because it is specific, measurable, and verifiable.

The connection between inventory tracking and waste reporting

Here is the part that matters most for operations teams: your expiry tracking system is your waste measurement system. They are the same thing, or they should be.

Every batch of product in an inventory tracking system has a cost, a category, a quantity, and an expiry date. When that batch expires and is removed from inventory, you have a waste event with all four data points captured automatically. If your system also records what happened to the waste (sold at markdown, donated, composted, landfilled), you have a complete waste event record that is audit-ready.

This means that the investment in batch-level expiry tracking -- which most retailers justify on the basis of reduced shrinkage and improved margins -- simultaneously builds the measurement infrastructure required for ESG reporting. You get two capabilities for the price of one.

The retailers who will struggle most with the coming reporting requirements are the ones who track inventory at the SKU level but not the batch level. SKU-level tracking tells you how many units of Brand X Yogurt you have. Batch-level tracking tells you that you have 12 units expiring March 3, 8 units expiring March 10, and 15 units expiring March 18. Only batch-level tracking gives you the expiry-based waste data that sustainability reporting requires.

What to do Monday morning

If you have read this far, you are probably in one of three positions:

Position 1: You have no waste tracking. Start with the one-week physical waste audit described in the Month 1 section above. You need a baseline before you can do anything else. Simultaneously, evaluate batch-level inventory tracking systems that include waste disposition workflows. Your timeline is tight -- if you are subject to California SB 253, your Scope 3 data needs to be collected starting in fiscal year 2027, which means your measurement system needs to be operational by early 2027 at the latest.

Position 2: You have basic inventory tracking but no waste reporting. Your immediate task is adding a waste disposition workflow to your existing system. When items are pulled from inventory, where do they go? If your system cannot answer that question at the item level, you need to either upgrade your system or add a parallel tracking process. Also, establish at least one diversion partnership (food bank, composter) so you have somewhere to send waste other than the dumpster.

Position 3: You have good data but have not started reporting. You are in the best position. Map your existing data to the GRI 306 and SASB disclosure requirements. Identify any gaps (most likely: diversion pathway data, emission factor calculations, or temporal granularity). Fill the gaps, run your first draft report, and consider voluntary CDP disclosure even if you are not yet required to report -- early disclosure builds credibility and gives you practice cycles before mandatory reporting arrives.

Regardless of your position, the underlying principle is the same: food waste reporting is transitioning from voluntary to mandatory, from vague to specific, and from "nice to have on the website" to "auditable like financial statements." The retailers who build measurement capability now will be ready when the deadlines arrive. The retailers who wait will be scrambling to backfill years of data from estimates and guesswork -- and their auditors, investors, and retail buyers will be able to tell the difference.

The infrastructure is not expensive. Batch-level inventory tracking systems cost tens to hundreds of dollars per month, not millions. Food bank partnerships are free. Composting contracts often cost less than landfill tipping fees. The bottleneck is not money -- it is attention. The operations directors who make waste measurement a priority in 2026 will be the ones whose companies are compliant, competitive, and credible when the reporting deadlines arrive in 2027 and beyond.

The data is already in your supply chain. You just need to start capturing it.