The most effective way to ensure that a newly formed internal audit activity remains free from undue management influence is to establish the internal audit activity's position within the organization through an audit charter. According to the Institute of Internal Auditors (IIA) standards, the audit charter should define the purpose, authority, and responsibility of the internal audit activity, clearly outlining the scope of internal auditing within the organization. This foundational document formalizes the internal audit function's role and provides a framework that supports its operational independence.References: The Institute of Internal Auditors (IIA) - International Standards for the Professional Practice of Internal Auditing.