Case Study: City of Oklahoma City recovers $45M and boosts municipal performance with ACL

City of Oklahoma City - Customer Case Study

Oklahoma City’s eight-person Audit department, serving a sprawling city of more than 500,000, faced the challenge of reviewing vast quantities of siloed data and monitoring municipal performance where many departments lacked processes or benchmarks. The team needed reliable tools to track revenue streams, operational timelines and service performance across dozens of city systems.

Using ACL data‑analysis software, auditors transformed large datasets into actionable information, enabling an award‑winning sales tax audit that uncovered roughly $45 million in lost municipal revenues and recovered $3 million for Oklahoma City. Ongoing analytics now power bi‑weekly tax monitoring, reduce permit wait times (from three weeks to two), optimize judicial staffing, and provide performance measures that improve accountability, revenues and city operations.

City of Oklahoma City

Jim Williamson

Assistant City Auditor