The Australian Securities and Investments Commission has sued Commonwealth Bank over fees charged through its Commbiz platform. The regulator accuses the bank of overcharging business customers about 8.5 million dollars. The allegations involve fees associated with business banking. Tens of thousands of businesses were affected. As many as 42,000 firms may have lost millions of dollars. ABC News, The Courier Mail, Nine.com.au and SMH reported the allegations on 11 and 12 November 2026. The news outlets reported the story on back-to-back days.