Tabcorp is Australia's largest gambling company, employing more than 5,000 people. It is the largest provider of wagering and gaming products and services in Australia. Tabcorp is listed on the Australian Securities Exchange (ASX).

In 2017, Tatts Group combined with Tabcorp Holdings Limited to create a diversified entertainment group under the Tabcorp brand. The following year UBET was transitioned back into the flagship TAB brand. In July 2021, Tabcorp announced it would spin off its lotteries and keno business into a separate listed company, called The Lottery Corporation with Tabcorp retaining its wagering and media arm.

In 1961, the Victorian TAB (Totalisator Agency Board) was established, legalising off-course totalisator betting. Three years later in 1964, the NSW TAB was established, betting on two race meetings on its first day at Canterbury and Menangle.

Tabcorp was listed on the Australian Securities Exchange by the Government of Victoria in August 1994, operating a wagering and gaming licence in Victoria. In 1999, Tabcorp announced the acquisition of Star City Holdings and in 2000 it acquired Structured Data Systems which developed wagering and Keno systems and animated games.

Tabcorp merged with Jupiters in November 2003 and in 2004, took over Tab Limited, the New South Wales based wagering and media company, including Sky Channel.

Matthew Slatter became CEO of Tabcorp in 2002, and oversaw the merge with Jupiters in 2003. However, after a 10% fall in profits in early 2007, he was sacked by the Tabcorp board.

In 2011, Tabcorp demerged its casino operations resulting in Tabcorp's casinos business being separately listed as Echo Entertainment Group. The existing wagering, media, gaming and Keno businesses were retained by Tabcorp.

In 2012, Tabcorp commenced operating Victoria's new Wagering and Betting Licence. In 2014 Tabcorp acquired ACT TAB. In 2016, Tabcorp acquired the gaming systems company Intecq.