In 1908, Smith was named King's Counsel. Smith was a director and secretary-treasurer for the Montreal and Cornwall Navigation Company. He served as lieutenant-colonel in the militia.
In 1922, he was appointed to the High Court Division of the Supreme Court of Ontario and then to the Appellate Division. In 1926, he sat on the Supreme Court as an ad host judge and was appointed as a judge in 1927. He retired in 1933.