Although he was initially selected for Australia as a right-arm leg spinner, Smith later played primarily as a batsman. After a few matches in 2010 and 2011, he was a regular player in the Australian team after 2013, and took over captaincy from Michael Clarke in late 2015, after which he predominantly batted at number 3 or 4.
In March 2018, Smith was widely criticised for overseeing ball tampering in the third Test against South Africa, during which he stood down from the team captaincy and was replaced by Tim Paine. Following an investigation by Cricket Australia, Smith was banned from all international cricket and domestic cricket in Australia for one year, and will not be considered for a leadership role for another year after that.
Steve Smith was born on 2 June 1989 in Kogarah, Sydney to an Australian father, Peter, who has a degree in chemistry, and an English mother, Gillian. Smith attended Menai High School, and left at age 17 to play cricket in England where he played club cricket for Sevenoaks Vine in the premier division of the Kent Cricket League. He did so well for Sevenoaks that he was picked to play for Surrey's second XI.
Because his mother was born in London, Smith has dual British and Australian citizenship. In 2011, Smith started dating Dani Willis, a commerce and law student at Macquarie University. In June 2017, the couple announced their engagement while on holiday in New York. The couple married at Berrima, New South Wales on 15 September 2018.