International Standards on Auditing (ISAs) is issued by International Auditing and Assurance Standards Board (IAASB) and applies most commonly in Global. This page covers who typically pursues it, what drives the decision, and when it's worth the investment.
Who IAASB ISA Applies To
IAASB ISA is most relevant to:
- Enterprise
Industries That Pursue IAASB ISA
Teams working in the following sectors regularly engage with IAASB ISA:
- Professional Services
- Finance
- Technology
- Manufacturing
Common Drivers
Organizations typically pursue IAASB ISA for one or more of:
- Customer or enterprise procurement: prospects or existing customers require it as part of security review and vendor onboarding.
- Regulatory obligation: IAASB ISA audits are formally required and gated by regulators or auditors.
- Risk reduction: the control framework surfaces real gaps — access management, change control, incident response — that would eventually bite without structure.
- Market signal: many buyers now treat the framework as a trust shortcut; achieving it accelerates sales cycles.
Where It Applies
IAASB ISA is recognised in Global. If you sell outside those regions, confirm whether buyers will accept IAASB ISA or whether a locally-recognised alternative is required.
Alternatives and Adjacent Frameworks
If IAASB ISAisn't the right fit, buyers in the same space typically also accept:
Decision Checklist
- Is a customer or regulator asking for it in writing?
- Will the audit output be used repeatedly across prospects, or just once?
- Do you have the budget and six-month calendar required to see the process through?
- Could an adjacent framework (ISAE 3000 or ISAE 3402) satisfy the same ask more cheaply?
For a full step-by-step walkthrough, see the IAASB ISA certification process page. For cost breakdowns, see the cheapest path to IAASB ISA.