Annual Performance Report

We produce an annual Internal Audit Department Performance Report to provide the Board of Supervisors, the Audit Advisory Committee, County Management, and county residents with information about Internal Audit's performance, accomplishments, and results achieved during the fiscal year.

FY23 Report
FY22 Report
FY21 Report


Quality of Performance

The Internal Audit Department undergoes assessments to ensure we are meeting authoritative guidance promulgated by the Institute of Internal Auditors (IIA).  Mandatory requirements include meeting attribute and performance standards defined by the International Standards for the Professional Practice of Internal Auditing.  Conformance to these standards is verified by independent external reviews and periodic self-assessments.

External Assessments

An external assessment of our department's activities is conducted every five years by an independent party.  Our most recent review was completed in June 2022 by representatives from the Association of Local Government Auditors.  It covered audit work performed during the period of July 1, 2016, through June 30, 2021.  The results are in the following report:

Maricopa County Internal Audit External Quality Control Review Report (PDF)

Internal Self-Assessments

An internal team of auditors assesses our compliance each year using the prescribed IIA practice guide.  Any identified deficiencies are addressed, and updates are made to policies and procedures as needed.  

Annual Results of Internal Audit's Quality Assurance and Improvement Program - FY2022 (PDF)