The Banker automobile brand was established in 1905 in Chicago, Illinois, by the AC. Banker Company. Marketed as "A Chicago Car for Chicago People," the Banker was designed as a conventional four-seater tonneau. It featured a 4.6-litre four-cylinder engine and utilized shaft drive technology.

The construction of the Banker vehicles included options for either wood or aluminum bodies, priced at $2,250 and $2,500 respectively. Additionally, a limousine variant was available in both materials, costing $3,000. Despite its local appeal, the Banker brand struggled to attract a sufficient customer base and ultimately ceased production by 1906.