Cotner & Company, LLC is a McArthur, Ohio accounting firm serving families, individuals, businesses, and other agencies with tax and accounting support. The firm describes itself as a full-service professional accounting firm experienced in both business and individual taxation, with service to clients in Southeastern Ohio as well as across the United States and Canada.

Its listed services include tax preparation and planning, income and estate tax planning, financial statement compilations and reviews, business valuations, bookkeeping-related support, and accounting services. Cotner & Company also identifies QuickBooks training and Gusto Payroll Software among its capabilities, and its source materials note CPA credentials, AICPA membership, and activity in the Ohio Society of CPAs.