I recently read an article on the disadvantages of hiring an independent auditor, and was surprised that the article didn’t mention the advantages external resources can provide.
The article I read (at www.chron.com) talked about disadvantages such as an independent auditor taking time to get up to speed on the business; the cost of an independent auditor being higher than salaries of internal audit functions; the time it takes to find the right person for the work; and fears around confidentiality.
I wouldn’t necessarily argue that these are legitimate concerns. But, I would offer the following advantages in using independent business audit resources in your audit plan: