ISSA Sustainability

Launch webinar

See ISSA Sustainability in action

Join us for the launch of a purpose-built solution for sustainability assurance engagements, from planning and risk assessment through to evidence gathering and reporting.
17 November 2026

Guided and structured assurance for every ISSA 5000 engagement

Structured workflows for sustainability assurance engagements.

Want to know more?

Leave your details and we will be in touch about ISSA Sustainability.


ISSA Sustainability is a cloud-based app on the Caseware Cloud platform, built on Caseware Smart Engagement, that supports practitioners in performing sustainability assurance engagements in accordance with ISSA 5000, General Requirements for Sustainability Assurance Engagements.
Many firms still deliver these engagements in spreadsheets and adapted audit templates. ISSA Sustainability replaces this with one structured engagement file that guides teams from acceptance through to the assurance report.

Features of ISSA Sustainability

Purpose-built ISSA 5000 workflow

Documentation follows the flow of a sustainability assurance engagement, from acceptance through risk assessment, evidence gathering, completion and reporting, rather than a repurposed financial statement audit.

Double materiality assessment

A dedicated materiality document supports teams to assess and document both impact materiality and financial materiality, as required for sustainability assurance engagements.

Limited, reasonable and combined assurance

Supports all three engagement types, with a dedicated assurance report template for each.

Sustainability-specific coverage

Includes guided documentation for estimates and forward-looking information, the work of experts and internal audit, and group sustainability information and aggregation.

Deliver credible sustainability assurance with confidence

Sustainability reporting is fast becoming a regulatory and investor expectation. ISSA Sustainability supports audit and assurance firms to deliver ISSA 5000 engagements on their clients’ sustainability information with consistent documentation, clear review trails and a structured approach across every phase of the engagement.

Benefits that support sustainability assurance

Standards alignment

Supports compliance with ISSA 5000 through an engagement file designed specifically for sustainability assurance.

Consistency

Replaces spreadsheets and adapted audit templates with one standardised, reviewable engagement file for every client.

Quality and oversight

Built-in sign-offs, senior checklists, engagement leader declarations and engagement quality review support oversight from planning to completion.

Flexibility

Cloud-based access allows teams to work from any location, on any device, at any time, with no installation required.

How ISSA Sustainability works

A guided workflow from acceptance to assurance report.

Accept the engagement

Evaluate the engagement, capture practitioner information and issue the engagement letter.

Understand the entity

Gather information on the entity and its process to identify the sustainability information to be reported.

Assess risk and materiality

Assess inherent risk, controls, fraud and non-compliance, and document double materiality from an impact and financial perspective.

Gather evidence

Perform work programmes, tests of controls, and procedures on estimates, forward-looking information and group aggregation, and evaluate the work of others.

Complete and report

Address subsequent events, misstatements and written representations, then generate the limited, reasonable or combined assurance report.

Review and sign off

Finalise the senior checklist, engagement leader declaration and engagement quality review.

Ready to deliver ISSA 5000 sustainability assurance?

Give your team one structured, standards-aligned engagement file for every sustainability assurance engagement. If you want to see how ISSA Sustainability can support your firm, speak to Caseware Africa.