This comes after his contract was not renewed by AmaKhosi at the end of June despite serving them for more than five seasons.
“I have decided to hang up my boots. I walk away from the game with pride. My career was not ended by injury, because I have fully recovered and able to play,” said Tau in a press conference.
The 33-year-old former Pirates captain revealed that he will now be focusing on his businesses and the launch of his new book expected to be out in December.
“On the business front, I have a company and I will pursue that. I am also involved in business with Bataung Memorial Tombstone.
“I’m also writing a book about my life. It will document the truth about what has been said and written. All the truth about my time at Kaizer Chiefs,” added Tau.