FAQ Category: Attest / Assurance & Nonattest Services
Attest / Assurance & Nonattest Services
What is the difference between an audit and a review engagement?
There are significant differences between an audit and a review regarding the amount of test work required and the cost of the engagement. An audit provides greater assurance to the end user than the limited assurance provided by a review engagement. Because of this, considerably more test work must be performed during an audit to achieve this higher level of assurance. Auditors will avail themselves of all the tools in the audit toolbox. This includes vouching, tracing, scanning, observation, inspection, confirmation, inquiry, recalculations, reperformance, testing of details, and analytical procedures.
Additionally, the standards require the auditor to perform a more robust risk assessment and gain a deeper understanding of the Company’s system of internal controls than is necessary for a review engagement. Because a review engagement is substantially less in scope than an audit and therefore provides less assurance to the end-user than an audit, it requires fewer procedures and less time to perform. Generally, a review engagement only borrows two tools from the audit toolbox: inquiries and analytical procedures. In some cases, other procedures are performed to obtain the limited assurance required in a review engagement.