An internal auditor's primarily responsibility is to protect a company from incurring any penalties enforced by the IRS. Companies often have so much money coming from so many places that it is easy to miss something in their paperwork and the proper taxes might not be paid. Internal auditors review all of this information before taxes are actually taken care of.
Internal Auditor Tasks
Evaluate and document existing or proposed procedures and controls.
Provide management with recommendations for policy, procedure and practice improvements.
Conduct operational, compliance, financial and SOX audits within an organization.
Acts as a liaison for audits with internal departments as well as outside auditors.