A threshold is the exact mathematical line where an impact, risk, or opportunity crosses from being legally irrelevant to legally material. Without thresholds, your sustainability report would devolve into a chaotic, thousand-page list of every minor issue on earth. Thresholds enforce discipline.
The ESRS Refusal to Set Universal Numbers
The ESRS refuses to hand companies a fixed, universal threshold (e.g., "Any risk over €5 million is material").
The ESRS is aggressively principles-based because a €5 million risk might bankrupt a small manufacturer but be a rounding error for a massive global bank. Instead, ESRS 1 strictly defines the criteria for materiality (Severity, Magnitude, Likelihood) and legally forces the company to build its own bespoke thresholds based on its specific reality.
The ESRS demands you build your own thresholds, but it also strips away your ability to hide them. EFRAG absolutely mandates that you publicly publish your exact threshold methodology in your ESRS 2 IRO-1 disclosure. If your thresholds are suspiciously high, auditors and regulators will attack them.
Setting Thresholds for Impact Materiality
For impact materiality, companies must build thresholds entirely around the concept of Severity (and for potential impacts, Likelihood).
Calculating Severity for Negative Impacts
The ESRS forces you to look at the damage entirely from the perspective of the victims or the dying ecosystem, not from the perspective of corporate PR. Severity is calculated by aggressively scoring three variables:
- Scale: How absolutely devastating is the damage? Does it destroy livelihoods, violate fundamental freedoms, or cause lethal harm?
- Scope: What is the blast radius? How many thousands of people are affected, or how many miles of ecosystem are destroyed?
- Irremediable Character: Is the damage permanent? Can the corporation ever actually put the broken ecosystem or shattered lives back to exactly how they were before the impact?
Think of Irremediable Character as the ultimate multiplier. If a company accidentally spills a mild chemical that naturally breaks down in 24 hours (highly remediable), the severity remains low. If a company bulldozes an ancient, sacred indigenous burial ground, the destruction is utterly permanent (highly irremediable). The permanent nature of the act violently spikes the overall severity score, likely pushing it over the materiality threshold instantly.
Calculating Severity for Positive Impacts
When calculating positive impacts, the ESRS deletes "irremediable character" from the equation (because you do not need to "fix" a positive outcome). Positive impacts are judged purely on Scale (how great the benefit is) and Scope (how widespread the benefit is).
The Likelihood Multiplier
For things happening right now (actual impacts), the likelihood is 100%.
For things that might happen (potential impacts), you must multiply your Severity score by the Likelihood of the event occurring. The Brutal Exception: If a potential event involves severe human rights violations, the ESRS legally orders you to ignore the likelihood multiplier. Severe human rights risks are always material, even if the corporate risk team claims they have only a 1% chance of happening.
Setting Thresholds for Financial Materiality
For financial materiality, the threshold calculation is driven by two brutal corporate realities: Likelihood of Occurrence and the Potential Magnitude of Financial Effects.
Companies are permitted to build these thresholds using:
- Relative Financial Metrics: (e.g., "Any risk exceeding 3% of total global revenue.")
- Qualitative Metrics: If a risk cannot accurately be priced yet, the company must use a defensible scale (e.g., Low, Medium, High).
The Temporal Trap
Accountants typically look at financial risks over a tight 12-month window. The ESRS utterly destroys this short-term view. When setting financial thresholds for sustainability, the company must calculate the cumulative financial damage over the short, medium, and long term. A slow-moving physical climate risk that will slowly devour profit margins over the next decade must cross the threshold today.
Executives frequently claim that "reputational risk" cannot be reliably quantified, so it cannot cross the financial threshold. EFRAG violently rejects this. If a massive reputational catastrophe (like a high-profile child labor scandal) is severe enough to make major banks refuse to lend you money or forcefully spike your cost of capital, that risk is entirely financially material, even if you cannot trace it to a specific lost sale.
Documenting the Threshold Formula
Setting thresholds is not a casual boardroom conversation. It is an auditable legal process.
The company absolutely must maintain rigid internal documentation proving exactly:
- The exact quantitative formulas used.
- The qualitative scales adopted.
- The explicit reasoning behind why these specific thresholds were chosen.
This documentation serves as the ultimate corporate defense mechanism when hostile external auditors arrive to validate the sustainability statement.
Key Takeaways
- 1The ESRS does not set universal numeric thresholds - each company must build bespoke thresholds suited to its specific scale and context
- 2Impact materiality thresholds are built around severity (scale, scope, irremediable character) and likelihood for potential impacts
- 3Financial materiality thresholds combine likelihood of occurrence with potential magnitude of financial effects across short, medium, and long term
- 4The ESRS destroys the traditional 12-month risk horizon - you must calculate cumulative financial damage over multi-year timeframes
- 5All threshold methodologies must be publicly disclosed in ESRS 2 IRO-1 and fully documented for audit defense