Kerr-Wilson is a graduate of the University of British Columbia and Nashotah House Theological Seminary.

He was ordained to the priesthood in 1990, beginning his ministry as curate of St. Paul's, Bloor Street, Toronto.

He then was rector of the Church of the Holy Family, Brampton, then Dean of Edmonton before his ordination to the episcopate in the Diocese of Qu'Appelle on May 23, 2006.

On June 18, 2015, Kerr-Wilson was elected as the Metropolitan of Rupert's Land, later renamed the Province of the Northern Lights.

In 2019, Kerr-Wilson was a candidate for Primate of the Anglican Church of Canada, but was not successful, coming in third.