Audit evidence

Audit evidence is the documentation collected by an auditor as part of his or her review of the financial accounts, internal controls, and other matters needed to certify a client’s financial statements. The amount and type of audit evidence collected varies by client, depending on the type of industry, the condition of the client’s financial system, and the type of audit. The amount of evidence collected must provide a reasonable basis for the auditor’s opinion. Once collected, the audit evidence is assembled into the auditor’s working papers.