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Two of the most recognised social audit systems in global supply chains are amfori BSCI and SEDEX / SMETA. Both help brands and suppliers assess working conditions, but they differ in ownership, structure, scoring, and how results are shared. This guide compares them side by side so you can understand which audit fits your supply chain.
Key point: Neither BSCI nor SMETA is a traditional pass/fail certificate. Both are social audit and monitoring systems that measure performance against internationally recognised labour standards and produce a report rather than a simple "certified / not certified" outcome.
What is amfori BSCI?
The Business Social Compliance Initiative (BSCI) is a social compliance system operated by amfori, a global business association headquartered in Brussels, Belgium. An amfori BSCI audit is built on the amfori BSCI Code of Conduct 2021, which is referenced to the UN Universal Declaration of Human Rights, International Labour Organization (ILO) Conventions, the UN Guiding Principles on Business and Human Rights (UNGP), and the OECD Guidelines for Multinational Enterprises.
An amfori BSCI audit is made up of 81 audit questions, of which 20 are "crucial questions" that carry greater weight in scoring. These questions are divided among 13 Performance Areas (PAs), each rated from A to E — where A indicates "very good" and E indicates "unacceptable". The 13 Performance Areas combine into a single overall audit rating from A to E.
The amfori BSCI system supports continuous improvement. A site rated A or B is scheduled for its next full audit after two years, while a site rated C or below requires a follow-up audit and a next full audit after one year.
What is SEDEX / SMETA?
Sedex (Supplier Ethical Data Exchange) was founded in 2001 by a group of retailers as a membership-based data platform. Its audit methodology, the Sedex Members' Ethical Trade Audit (SMETA), was launched in 2004 and is described as the world's most widely used social audit methodology. The latest version, SMETA 7.0, was released in June 2024.
SMETA measures a site against both local legislation and the ETI (Ethical Trade Initiative) Base Code, which is founded on ILO conventions. Whichever standard provides greater protection becomes the benchmark. Rather than imposing a pass/fail certification model, SMETA encourages transparency and continuous improvement.
A SMETA audit can be conducted as a 2-pillar assessment (with an illustrative duration of about 2 days) or a 4-pillar assessment (about 3 days). The four pillars cover Labour Standards, Health & Safety, Environment, and Business Ethics. A distinctive feature is the Management Systems Assessment (MSA), which evaluates four elements: Policies & Procedures, Resources & Responsibilities, Communication & Training, and Monitoring.
BSCI vs SEDEX: Key Differences at a Glance
| Aspect | amfori BSCI | SEDEX / SMETA |
|---|---|---|
| Operator | amfori (Brussels, Belgium) | Sedex (London, UK) |
| Launched | amfori BSCI Code of Conduct 2021 | Sedex 2001; SMETA 2004; SMETA 7.0 (June 2024) |
| Underlying standard | amfori BSCI Code of Conduct (UN / ILO / UNGP / OECD) | ETI Base Code (founded on ILO conventions) |
| Audit structure | 81 questions across 13 Performance Areas | 2-pillar or 4-pillar; Labour, Health & Safety, Environment, Business Ethics |
| Scoring / rating | Overall A–E rating (A very good, E unacceptable) | No pass/fail; CAPR report, MSA grades, finding types |
| Key questions | 20 crucial questions | Management Systems Assessment (4 elements) |
| Result sharing | amfori Sustainability Platform | Sedex platform (shareable with multiple customers) |
| Follow-up timing | C or below → follow-up; A/B 2 yrs, C/below 1 yr | Desktop review (≈5 working days) or follow-up audit (≈6 months) |
Rating and Results: A–E vs CAPR
The most visible difference is how each system reports results. amfori BSCI assigns a graded A–E rating. The rating rules are: A requires at least 7 Performance Areas rated A and none rated C, D, or E; B allows a maximum of 3 PAs rated C and none rated D or E; C allows a maximum of 2 PAs rated D and none rated E; D allows a maximum of 6 PAs rated E; and E allows a maximum of 7 PAs rated E. (The algorithm that converts the 81 answers into PA ratings is not publicly available, to prevent "gaming" of the system.)
SMETA does not issue an A–E grade. Instead, it produces a Corrective Action Plan Report (CAPR) and a Full Audit Report. Findings are classified as Non-Compliance (fails local or international law), Non-Conformance (meets law but not the ETI Base Code), Collaborative Action Required (CAR), or Good Example. Criticality levels are Business Critical, Critical, Major, and Minor. The MSA is graded as Not Addressed, Fundamental Improvements Required, Some Improvements Recommended, or Robust Management System.
Audit Methodology Compared
BSCI's 81 questions map to 13 Performance Areas that mirror its Code of Conduct principles — from Social Management System and Cascade Effect, through Fair Remuneration, Decent Working Hours, and Occupational Health and Safety (the largest area, with 25 questions), to Protection of the Environment and Ethical Business Behaviour. The 20 crucial questions focus on the highest-risk harms to workers, such as child labour, forced labour, and the right to a safe evacuation route.
SMETA's structure is organised around its four pillars and assessed against both local law and the ETI Base Code, with the higher standard prevailing. Its unique Management Systems Assessment looks at whether a site's policies, responsibilities, training, and monitoring are "fit for purpose" given the site's size and risk profile — rather than enforcing one fixed management model.
Recognition and Data Sharing
Both systems reduce audit duplication by letting suppliers share one audit with multiple customers. amfori reports that its platform draws on 2,400+ members in 50+ countries, 58,000+ suppliers in 120+ countries, and 40,000+ audits performed every year, supported by 15 local network representatives. BSCI results are managed on the amfori Sustainability Platform.
SMETA's defining advantage is shareability: a single SMETA audit uploaded to the Sedex platform can be shared with multiple buyer customers, reducing "audit fatigue". SMETA is accepted by major international brands and is widely recognised as a global social audit methodology. Audits are delivered through Sedex's network of Affiliated Audit Companies (AACs), which are APSCA-approved and use CSCA-level auditors.
How to Decide Between BSCI and SEDEX
Step 1: Confirm your customer's requirement
The starting point is simple — ask which audit your buyer actually accepts. Many brands specify either amfori BSCI or SMETA in their supplier code, and some accept both.
Step 2: Check existing audit coverage
If you already hold a valid SMETA on the Sedex platform or a BSCI audit on the amfori Sustainability Platform, share that result before commissioning a new audit.
Step 3: Assess your supply chain risk profile
Higher-risk sites generally need more frequent audits. SMETA guidance recommends annual audits for high-risk sites, every two years for medium-risk, and buyer discretion for low-risk. BSCI uses its A–E rating to set the next full-audit interval.
Step 4: Decide on audit scope
For SMETA, choose between a 2-pillar (Labour + Health & Safety, with basic environment) and a 4-pillar audit (adding full Environment and Business Ethics). For BSCI, the 13 Performance Areas apply to all sites.
Step 5: Select an approved audit provider
Book SMETA through a Sedex-approved Affiliated Audit Company (AAC). For BSCI, use an auditing company or quality partner qualified by amfori.
Step 6: Prepare, audit, and share results
Prepare documentation and worker-facing systems, complete the on-site audit, then upload and share the report on the relevant platform (Sedex or amfori) with your customers.
FAQ: BSCI vs SEDEX Frequently Asked Questions
Q: Is BSCI or SEDEX a certificate?
A: Neither is a traditional pass/fail certificate. Both are social audit and monitoring systems that produce a report. amfori BSCI issues an A–E rating; SMETA issues a CAPR and Full Audit Report without a pass/fail grade.
Q: What is the main difference between BSCI and SMETA?
A: BSCI uses 81 questions across 13 Performance Areas with an overall A–E rating, operated by amfori. SMETA uses a 2-pillar or 4-pillar structure against the ETI Base Code with no grade, operated by Sedex, and is designed to be shared with multiple customers from one audit.
Q: Which is more widely accepted by brands?
A: Both are widely recognised. SMETA is described as the world's most widely used social audit methodology and is accepted by major international brands. amfori BSCI is used by 2,400+ members across 50+ countries. Acceptance ultimately depends on what each individual buyer requires.
Q: How long is a BSCI or SMETA audit valid?
A: For amfori BSCI, a site rated A or B is re-audited after two years, and C or below after one year. SMETA guidance recommends annual audits for high-risk sites, every two years for medium-risk, and buyer discretion for low-risk sites.
Q: Can I share one audit with multiple customers?
A: Yes. SMETA is built around shareability on the Sedex platform, letting one audit serve multiple buyers. BSCI results are managed on the amfori Sustainability Platform and shared with amfori members and their business partners.
Q: What does a SMETA 2-pillar vs 4-pillar audit cover?
A: A 2-pillar SMETA covers Labour Standards and Health & Safety (with a basic environment assessment). A 4-pillar SMETA adds a comprehensive Environment pillar and a Business Ethics pillar. The 4-pillar audit has an illustrative duration of about 3 days versus about 2 days for 2-pillar.
Q: Which should my factory choose?
A: Choose based on your buyer's requirement first. If a customer mandates one system, follow that. If both are accepted, consider existing coverage, your risk profile, and whether shareability with multiple customers (SMETA) or an A–E rating (BSCI) better serves your goals.
Conclusion
amfori BSCI and SEDEX / SMETA are both leading social audit systems built on ILO-based labour standards, but they serve suppliers in different ways. BSCI offers a structured 81-question, 13-Performance-Area model with a clear A–E rating. SMETA offers a flexible 2-pillar or 4-pillar methodology with a strong focus on shareability and continuous improvement rather than grading. The right choice depends on your customers' requirements, your current audit coverage, and your supply chain risk profile.
Need help deciding or preparing for a BSCI or SMETA audit? Our team supports suppliers through gap analysis, documentation, and on-site readiness. Contact us for a consultation.
References
- amfori. (2021). amfori BSCI Code of Conduct 2021. Brussels, Belgium.
- amfori. (2023). amfori BSCI audit rating overview (December 2023).
- amfori. amfori official website (amfori.org) — Key numbers and BSCI solution overview.
- Sedex. The Complete SMETA Audit Guide (SMETA 7.0, June 2024). sedex.com.
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