ORBA is a full-service accounting, tax, and business consulting firm located in downtown Chicago serving privately-held companies, individuals, and not-for-profit organizations. ORBA’s Certified Public Accountants have experience with accounting and assurance, business advisory services, financial and estate planning, fraud investigation, tax, litigation, and mergers and acquisitions. With some of the highest levels of direct client involvement in the industry, ORBA is where clients go to build long-standing, meaningful, and successful relationships with resourceful, proactive business and tax advisors.