Sustainability Initiatives
View this service
ISSA 5000: Preparing for the future of sustainability assurance
Organisations are facing increasing expectations around the quality, transparency and reliability of sustainability information. As sustainability reporting continues to evolve, stakeholders are placing greater emphasis not only on what is reported, but also on how that information is prepared, governed and independently assured.
The publication of ISSA 5000 – International Standard on Sustainability Assurance by the International Auditing and Assurance Standards Board (IAASB) marks an important milestone in the evolution of sustainability assurance. Effective for assurance engagements covering periods beginning on or after 15 December 2026 (with early adoption permitted), ISSA 5000 establishes a globally consistent framework for providing assurance over sustainability information.
While the standard is primarily intended for assurance practitioners, it also provides organisations with valuable insight into the areas that are increasingly expected to support high-quality sustainability reporting and independent assurance.
ISSA 5000 does not introduce new sustainability reporting requirements. Instead, it sets out how assurance practitioners plan and perform assurance engagements to obtain sufficient and appropriate evidence before expressing a conclusion on sustainability information.
For organisations, this highlights the importance of having reporting processes that are well governed, consistently applied and supported by reliable evidence. As sustainability reporting matures, greater attention is likely to be placed on areas such as governance arrangements, internal controls, reporting criteria, data quality and documentation.
Organisations that begin strengthening these foundations today may be better positioned for future assurance engagements while also improving the overall quality and credibility of their sustainability reporting.
Although ISSA 5000 is not yet effective for all engagements, many organisations are already taking steps to assess whether their reporting processes are ready for evolving assurance expectations.
This may include reviewing governance structures, evaluating internal controls over sustainability data, confirming that reporting methodologies are consistently applied, and ensuring that reported information can be supported by appropriate evidence.
A readiness or gap assessment can also help identify opportunities to strengthen existing processes before an assurance engagement begins.
At Normec Verifavia, we continue to monitor developments in sustainability assurance and work closely with organisations to support robust, transparent and credible sustainability reporting.
Whether you are preparing for an upcoming assurance engagement, evaluating your current reporting processes or considering a readiness assessment, our specialists can provide practical, risk-based support aligned with recognised assurance frameworks and industry best practices.
As sustainability assurance continues to evolve, organisations that invest early in strong governance, reliable data and effective reporting processes will be better placed to respond to increasing stakeholder expectations and future assurance requirements.
Contact us at: [email protected]
