Investors and lenders now ask the follow-up question: who checked this?
Early ESG reports in most markets were self-published and rarely questioned. That is changing. After reading a report, investors, lenders and large customers increasingly ask who verified it.
ESG assurance means an independent party reviews and confirms the accuracy of sustainability disclosures. It is following the path financial audit took: optional and rare, then expected of large listed companies, then standard.
Greenwashing now draws action. Regulators in several markets have acted against companies whose sustainability claims did not hold up. An unassured report carries more legal exposure than it used to.
Lenders price it in. Sustainability-linked loans, increasingly common in the region, often tie interest rates to ESG performance, and lenders want assurance over the metrics that set their return.
The level of assurance matters. Limited assurance is a review-level check. Reasonable assurance is audit-level. A report that says "assured" without the level is often limited assurance, and the market is starting to notice.
Building for assurance is cheaper than retrofitting. Clear data trails, consistent definitions and documented sources cost far less up front than rebuilding evidence afterwards.
Publishing ESG reports today without a path to assurance is not wrong yet. But the bar is moving, and companies preparing now will not be scrambling when a lender or regulator asks.