Individual, Corporation, Partnerships, Trust, Gift, and Estate. IRS Representation. Airington & Associates was one of the first CPA and accounting firms in Edmond. We strive to minimize taxes for businesses and individuals while offering a full range of accounting and tax services. We have been serving Oklahoma for over 30 years and provide expert guidance to achieve your financial goals. Our employees have a background working with and for the IRS. We prefer a proactive vs. reactive approach to tax services, while staying ahead on the latest technology to better serve our clients.