Sheil Kinnear was founded in the 19th Century by Joseph Lawton, with the firm taking its current form following a merger between Mr. Jimmy Sheil’s firm and J.A. Kinnear & Co in 1969. The firm is one of the oldest practices in the country and has stood the test of time through various economic peaks and troughs.

The firm has its headquarters in a 6,000 square foot office in Sinnottstown Business Park, Drinagh, Wexford with offices in Enniscorthy and Arklow. Sheil Kinnear is an active member of the Charter Group, a network of ten chartered accountancy firms located nationwide. On the 9th of September 2019, O’ Gorman Cosgrave merged with Sheil Kinnear to create one of the largest accountancy practices in the South East.