Supply Chain Due Diligence: How to Build an Audit-Ready Program for EUDR, CSDDD and Beyond

Supply chain due diligence is the ongoing process of identifying, preventing and documenting human rights, environmental and legality risks across every tier of your suppliers. EUDR, CSDDD, the EU Forced Labour Regulation and national laws such as Germany’s LkSG now require companies to prove that process with records, not policies.

Key Takeaways

• Due diligence is continuous: map, assess, mitigate, monitor and document, then repeat.
• EUDR applies from 30 December 2026 for large and medium operators; CSDDD applies from 26 July 2029 to companies with more than 5,000 employees and over EUR 1.5 billion turnover.
• Suppliers of in-scope companies will face questionnaires and evidence requests well before those dates.
• Certifications support risk mitigation but do not replace supplier-level and plot-level evidence.
• A due diligence platform replaces spreadsheet chasing with risk scoring and audit-ready records

Supply chain due diligence used to mean a supplier code of conduct and an annual audit sample. Regulators now expect a documented, risk-based process that reaches past Tier 1 suppliers and produces evidence on request.

Supply Chain Due Diligence Explained: What It Is and What It Covers

Supply chain due diligence is a structured, repeatable process for finding and addressing risks linked to your suppliers, from deforestation and illegal harvesting to forced labour and unsafe working conditions.

Most laws build on the OECD Due Diligence Guidance for Responsible Business Conduct, so supply chain due diligence follows the same logic in every regime. Companies are expected to:

• Embed responsible sourcing into policies and supplier contracts
• Identify and assess actual and potential adverse impacts
• Prevent, mitigate or stop those impacts
• Track whether the measures work
• Communicate what was done and provide for remediation

Supply Chain Due Diligence Laws: What Applies and When

Several regimes now overlap, each with its own scope and evidence standard.

The practical effect is that one supply chain due diligence program has to satisfy several authorities at once.

Even if your company sits below the CSDDD thresholds, your largest customers do not. Expect their supply chain due diligence requests to reach you first.

EUDR and the Corporate Sustainability Due Diligence Directive (CSDDD) address different aspects of responsible business conduct, from deforestation-free sourcing to identifying and addressing human rights and environmental impacts across value chains. Discover their key differences, overlapping requirements, and how businesses can strengthen compliance processes through better supply-chain visibility, risk assessment, and traceability.

[Read our complete guide to EUDR and CSDDD →]

Supply Chain Due Diligence Process: Six Steps That Hold Up in an Audit

An audit-ready process moves from mapping to evidence in six repeatable steps.

1. Map suppliers across tiers: link each supplier to sites, materials and product flows, not just contracts.
2. Collect origin and legality evidence: geolocation, land-use records, permits and certificates tied to specific lots.
3. Score risk: combine country, commodity and supplier factors, including satellite deforestation checks where relevant.
4. Mitigate: request more data, run audits, train suppliers or suspend sourcing from high-risk plots.
5. Monitor continuously: set alerts for expired documents, new risk signals and changes in supplier status.
6. Document and report: keep a retrievable record of every decision and file statements such as the EUDR DDS.

A global tire manufacturer applied this model to natural rubber, combining remote-sensing risk assessment, geolocation traceability and integration with the EU Information System to support supply chain due diligence for EUDR.

EUDR due diligence requires businesses to collect accurate supply-chain information, verify geolocation data, assess deforestation and legality risks, and take appropriate mitigation measures. Discover the key steps, documentation requirements, and digital solutions that can help your business strengthen EUDR readiness and improve supply-chain transparency.

[Read our complete guide to EUDR Due Diligence →]

Supply Chain Due Diligence Mistakes That Fail Audits

Most supply chain due diligence failures trace back to five avoidable habits.

• Relying on certificates alone: FSC, Fairtrade or RSPO support mitigation but do not replace plot-level geolocation or an EUDR due diligence statement
• Stopping at Tier 1: the highest risks usually sit with traders, collectors and smallholders upstream
• Running on spreadsheets and email: versions multiply, deadlines slip and evidence cannot be retrieved quickly
• Missing documents: land-use records, permits and risk reports absent when an authority asks
• Reacting only when asked: rushed file assembly after a request, instead of continuous monitoring

Each gap turns an authority request or customer audit into days of manual work, and under EUDR can mean a blocked shipment and penalties.

Due diligence works when it runs inside daily sourcing, not as a year-end exercise. When supplier onboarding, field data, risk scoring and documentation live in one system, the answer to any regulator or customer request already exists. The TraceX platform is built on that principle, and TraceX EUDR Solutions applies it to EUDR due diligence statements,

Supply Chain Due Diligence Software vs Manual Processes

Manual processes can record due diligence; they struggle to prove it at scale.

Moving supply chain due diligence onto a platform shortens response times, reduces audit preparation and gives procurement teams a defensible basis for sourcing decisions

Supply Chain Due Diligence Software: Buyer Evaluation Checklist

Evaluate vendors on the evidence they produce, not the dashboards they show.

• Does it map suppliers beyond Tier 1, down to plots or sites?
• Can it validate EUDR geolocation (GeoJSON) and run deforestation checks?
• Does risk scoring combine country, commodity and supplier factors?
• Can smallholders and small suppliers submit data offline via mobile?
• Does it track mitigation actions and document expiry automatically?
• Can it cover EUDR, CSDDD and forced labour requirements in one data model?
• Does it integrate with your ERP and the EU Information System?

A platform that meets all seven gives you supply chain due diligence you can defend in front of any authority.

Frequently Asked Questions