1. Audit fee: refers to the fee required for hiring professional auditors or audit teams to carry out audit work. In most cases, the audit fee is determined according to the scope, complexity and human resources required.

2. Labor cost: The audit needs the participation of auditors and related support personnel. Labor costs include salaries, allowances, benefits and training expenses of audit team members.

3, field trips and audit activities, then travel expenses will become part of the audit input. This includes airfare, accommodation, transportation, catering and other expenses.