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 a substantial amount. The allegations involve business banking fees. 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 the 11th and 12th of November 2026. The news outlets reported the story on consecutive days.