Double Materiality Assessment (DMA) is the foundation of modern ESG strategy and CSRD reporting. Rather than reporting on everything, a DMA identifies the sustainability topics that genuinely matter, to your business and to the people and environment affected by it, so that strategy, data collection, and reporting can focus where it counts.
What Does “Double” Mean?
A DMA looks at materiality from two directions at once.
Impact Materiality (Inside-Out)
This asks: how does our organisation affect people and the planet? It considers actual and potential impacts, positive and negative, across our own operations and our value chain, for example emissions generated, working conditions at a key supplier, or water consumption in a water-stressed region.
Financial Materiality (Outside-In)
This asks: how do sustainability issues affect our organisation’s financial position, performance, and prospects? It considers risks and opportunities, such as exposure to carbon pricing, physical climate risk to facilities, changing customer expectations, or new market opportunities in low carbon products.
Under CSRD and the ESRS, a topic is considered material if it is material from either perspective, impact or financial, not only when both apply. This is what distinguishes double materiality from the single, purely financial materiality historically used in traditional financial reporting.
How is a DMA Conducted?
While every organisation’s process is tailored to its structure and sector, most DMAs follow a similar sequence.
| Step | What happens |
|---|---|
| 1. Understand the business context | Map operations, value chain, business model, and strategy. |
| 2. Identify a long list of topics | Screen against the ESRS topical standards (environment, social, governance) and sector-specific issues. |
| 3. Engage stakeholders | Consult employees, customers, investors, suppliers, and affected communities to understand real world impacts and expectations. |
| 4. Assess impact materiality | Score each topic by scale, scope, irremediability, and likelihood of the impact. |
| 5. Assess financial materiality | Score each topic by the likelihood and magnitude of financial effect. |
| 6. Set thresholds and prioritise | Apply a materiality threshold to determine which topics are reported on in depth. |
| 7. Validate and document | Review results with leadership, document the methodology, and prepare for assurance. |
Why Does It Matter?
A well conducted DMA does more than satisfy a CSRD requirement. It focuses your ESG strategy on the handful of topics that carry real weight, rather than spreading effort thinly across a long generic checklist. It also gives your sustainability report a defensible, evidence based structure, since every disclosed topic can be traced back to a documented materiality assessment rather than an arbitrary choice.
How ecorune Can Help
We run structured Double Materiality Assessments aligned with the ESRS, combining stakeholder engagement, impact and financial scoring, and clear documentation, sized to your organisation’s complexity rather than a one-size-fits-all template.