Mueller & Co., LLP, ranked as the 19th largest accounting firm in the Chicago region by Crain's, operates offices in Elgin and Chicago, Illinois. The firm employs over 100 individuals, comprising 15 partners, professional accountants, and auditors, along with paraprofessionals and administrative staff. Since its establishment in 1968, our skilled professionals have been delivering a diverse array of services, such as internal and external auditing, accounting, taxation, business valuation, mergers and acquisitions, employee benefits, and management consulting.