The clean opinion problem: why more assurance is producing less trust

We are producing more assurance and generating less confidence. That should worry anyone who thinks the answer to greenwashing scrutiny is simply more audit hours, because it means the model is wrong, not that auditors aren't working hard enough.

The root problem is structural: today's assurance validates what a company chooses to disclose, not whether disclosure itself is honest. That creates a perverse incentive. A company that admits it missed a target invites activist scrutiny and litigation risk, while a competitor that quietly hedges the same failure in vaguer language escapes both. Rationally, the system punishes transparency, so companies give less of it.

Trust isn't a compliance output, it's a relationship: stakeholders have to be willing to be vulnerable to a company's actions because they believe its competence, motivation, fairness and responsibility are real. Current assurance barely touches three of those four dimensions.

Fixing it means four shifts: challenging materiality decisions before a report is finalised, not after; testing the governance behind a number, not just the number; moving from an annual check to continuous monitoring of the assumptions underpinning a report; and verifying the overall impression a report creates, not only the individual figures in it. Organisations that build genuine disclosure credibility this way get better terms of capital and a more durable reputation than the ones spending on reputation management instead.