SAQ (Self-Assessment Questionnaire) Response Guide for Suppliers

A self-assessment questionnaire arrives in your inbox—sometimes from a buyer you've worked with for years, sometimes from a procurement platform you've never logged into before. The questions span environmental practices, labor conditions, governance structures, and your own suppliers. You have a deadline. You may not have a sustainability team.

This guide explains what SAQs are, what each section actually asks for, how they differ from third-party assessments, and how to complete them without getting stuck.

What an SAQ Is (and What It Isn't)

An SAQ—self-assessment questionnaire—is a structured form that buyers use to evaluate whether their suppliers meet minimum sustainability standards. You fill it in yourself. There's no external auditor reviewing your operations before submission (at least not at the SAQ stage). The buyer receives your answers, may follow up for documentation, and uses the results to qualify, rank, or retain suppliers.

SAQs are distinct from third-party assessments like EcoVadis, CDP, or Sedex SMETA audits. Those platforms involve external scoring teams or independent auditors who verify your data. An SAQ is self-reported, which makes it faster to complete but also means your answers carry more reputational weight—buyers know you wrote them without oversight.

Many large buyers use SAQs as a first filter. If your answers fall below a threshold, you may be asked to complete a third-party assessment, remediate gaps, or, in some cases, lose preferred-supplier status. The stakes are real even if the format is informal.

Why Buyers Send SAQs

The proximate cause for most SAQs is regulation. Under the EU's Corporate Sustainability Reporting Directive (CSRD) and the Corporate Sustainability Due Diligence Directive (CSDDD), large companies must assess and report the sustainability performance of their supply chains. SAQs are the practical mechanism for doing this at scale—sending one questionnaire to hundreds of suppliers costs far less than commissioning audits of each.

Buyers also use SAQ data for internal risk scoring, ESG procurement policies, and investor reporting. If you've never received one before, you likely will. If you've received one, expect more from other customers.

The Four Standard Sections

SAQs vary by buyer and industry, but almost all follow the same core structure: environment, social and labor, governance, and supply chain. Understanding what each section actually covers saves time when you're staring at 60 questions under a two-week deadline.

Environment

This section covers your direct impact on the natural environment. Typical questions include:

Energy and emissions. Total electricity and fuel consumption, broken down by source where possible. Greenhouse gas emissions in tonnes of CO2e—ideally Scope 1 (direct combustion from your operations), Scope 2 (purchased electricity), and a summary of Scope 3 if available. Many SAQs accept estimates if you don't have verified figures, but you should flag them as estimates.

Water. Total water withdrawal by source (municipal supply, groundwater, surface water). Some SAQs ask specifically about operations in water-stressed regions.

Waste. Total waste generated, split between hazardous and non-hazardous, and disposal methods (landfill, recycling, incineration, composting). If you track waste diversion rates, include them.

Certifications and targets. Do you hold ISO 14001 or similar? Have you set reduction targets for emissions, energy, or waste? Buyers want to see that your environmental management is systematic, not ad hoc.

If you're missing specific figures, the guide on responding when you don't have all your ESG data covers how to frame gaps honestly without undermining your response.

Social and Labor

This section is often the most sensitive, particularly for manufacturers and companies with complex workforces. Expect questions on:

Working conditions. Contracted working hours, overtime policies, and whether you comply with local labor laws. If you have shift workers, you may need to specify conditions by site or employment category.

Wages. Whether you pay at or above national minimum wage. Some SAQs ask about living wage alignment, which is a higher bar.

Health and safety. Total recordable injury rate (TRIR) or lost-time injury frequency rate (LTIFR). Do you have a formal health and safety management system? ISO 45001 certification counts here.

Diversity and inclusion. Gender split at management and board level. Some SAQs ask about pay equity analysis, parental leave policies, or neurodiversity initiatives—these tend to appear in enterprise buyer questionnaires more than SME-focused ones.

Forced and child labor. A binary policy question: do you have a policy explicitly prohibiting these? This is not optional in any serious SAQ. If you don't have a written policy, create one before submitting. The ESG policy documents guide covers what these documents need to contain.

Grievance mechanisms. How can workers raise concerns anonymously? A whistleblower line, anonymous suggestion box, or third-party hotline all qualify. The important thing is having a documented mechanism.

Governance

This section covers how your company is run—not as an abstract ethics question, but in concrete structural terms.

Anti-bribery and corruption. Do you have a written ABC policy? Have employees received training on it in the last 12 months? This comes up on virtually every SAQ.

Code of conduct. A supplier code of conduct (or equivalent) that sets behavioral standards for employees and, ideally, suppliers. Many buyers want to know if you've extended these requirements down your own supply chain.

Data privacy. GDPR compliance if you operate in or serve customers in the EU. Questions typically focus on whether you have a privacy policy and a data protection officer (DPO) where required.

Business ethics. Some SAQs ask about political contributions, lobbying activities, or tax transparency. These are usually optional or lower-weighted unless you're in a regulated sector.

Supply Chain

Buyers are increasingly required to assess not just you, but your suppliers—sometimes called "second-tier" or "n-tier" supply chain transparency.

Typical questions: Do you assess your own suppliers' ESG performance? Do you have a supplier code of conduct? What percentage of your procurement spend do you cover with supplier assessments?

If you don't have formal supplier assessments in place, answer honestly. Most buyers using SAQs expect smaller suppliers to be at the beginning of this journey. A credible plan for implementing supplier assessments is more useful than an inflated claim.

How SAQs Differ from EcoVadis, CDP, and Sedex

The distinction matters because the preparation and effort required are different.

EcoVadis scores you against 21 indicators across four themes, with trained reviewers examining your documentation and checking it against your answers. A strong EcoVadis score requires not just answering questions but uploading supporting evidence—policies, certificates, monitoring data. You can't score above 45/100 on documentation alone without corroborating files. A detailed comparison of these platforms is in the EcoVadis vs CDP vs Sedex guide.

CDP is a disclosure platform, not an assessment. You report your carbon, water, or deforestation data to a public database. Buyers who use CDP want to see your climate strategy and emissions trajectory, not just a snapshot of your current footprint.

Sedex SMETA audits involve on-site inspection by accredited auditors. The SAQ (SSAQ) is a precursor—you fill it in to describe your practices, and the auditor then verifies those claims in person.

Self-assessment questionnaires from buyers directly are lower-friction than any of these, but they're also more variable. You may get a 10-question Google Form from one customer and a 90-item Excel workbook from another. The underlying data you need is largely the same; the format changes.

Completing an SAQ Efficiently

Read the scoring notes before you start. Many SAQs weight certain sections more heavily. If environment is worth 40% of your score and governance is worth 10%, prioritize accordingly.

Don't skip questions. Leaving questions blank signals avoidance, not absence of risk. If you genuinely don't have data, write "not currently tracked" or "in scope for 2025 data collection" rather than leaving the field empty.

Keep answers concise and factual. SAQs are reviewed by procurement teams, not sustainability experts. Plain statements of fact—"We consumed 450 MWh of electricity in 2024, sourced from the national grid"—are more credible than vague qualitative claims.

Attach documentation where permitted. Even when supporting files aren't required, uploading your environmental policy or safety statistics strengthens your response. It shifts the answer from self-reported to partially evidenced.

Version and date your responses. Buyers often ask the same SAQ annually. Maintaining a record of what you submitted and when makes year-on-year comparisons faster and protects you if a discrepancy is queried later.

If you're receiving SAQs from multiple customers simultaneously, the guide on managing multiple ESG questionnaires at once covers how to build a single data set that covers most of the common questions across buyers.

Building a Foundation That Handles Any SAQ

Most SAQ questions draw from the same underlying data: energy consumption, headcount, injury rates, policy documents, waste figures, emissions estimates. Suppliers who have collected and organized this data once can respond to new SAQs in hours rather than days.

The most common bottleneck isn't knowledge—it's data availability. If you've never tracked electricity consumption by site, or never written an anti-bribery policy, those gaps take time to close. The ESG response checklist identifies the specific data points that appear most frequently across standard questionnaires, so you can prioritize what to collect first.

Start with what you have. Estimate what you must. Document your methodology. Commit to improving your data collection for the next reporting cycle. Buyers who send SAQs regularly understand that small suppliers are at different stages—they're looking for honesty and a credible direction, not perfection.