The native Hoosier graduated from Indiana University School of Law in 1933 and began to practice with his mentor, attorney Robert Miller. Tackitt became Monroe County prosecutor in 1942. After his term as prosecutor, he went on to work defending Liberty Mutal. He retired in 1975 because he had developed heart problems and couldn't take contested cases, according to a 2005 Indiana Lawyer article. He continued to practice law after he retired from the position, handling wills, estates, and probate matters.
Tackitt was a member of the Monroe County, Indiana State, and American bar associations. He was active in the community, serving in his church and working with Monroe County non-profits and organizations.
In 2005, Tackitt received the 50-year award from the Indiana Bar Foundation. In April 2008, he received the Golden Barrister Award from Indiana University School of Law on his 75th graduation anniversary.
Tackitt is survived by his daughter, Martha Tackitt Distler; granddaughter, Michelle Tackitt Gordon; grandson, Schott W. Tackitt; sister, Bonita Tackitt Davis; five great-grandchildren; four nephews; one neice; and several grandnieces and grandnephews. In lieu of flowers, donations may be made to Bloomington Hospital Foundation, First Christian Church, or a charity of choice.