Keating started in the AARP Tax-Aide Program in 1998 preparing tax returns with pen and pencil after a fellow golfer suggested that he could occupy his time in the winter when it was too cold to play golf. In 2000, he started using laptop computers to assist in the preparation of the electronic filed tax returns. Also in 2000, Keating became a Tax-Aide instructor to teach the preparation of returns and the IRS and Maryland State tax codes to fellow volunteers. In 2006, Keating was asked to become the backup for Tony Zalowski, the district coordinator for Harford County. A year later Zalowski retired for health concerns and Keating became the district coordinator.