The 14-time grand slam winner has withdrawn from an exhibition match in Thailand following the surgery but Brisbane International tournament director Cameron Pearson says he's been assured by Williams' agent that the superstar will compete at Pat Rafter Arena.
"She'll be fit and ready for Brisbane," Pearson told AAP on Thursday.
"She just needed a little bit more time than what the Thailand exhibition match gave her to be ready.
"I guess it's a bit of a compliment that she wants to tailor her preparation around playing Brisbane."
The American world No.3 has been dogged by foot problems after stepping on glass and badly cutting both feet in 2010.
Williams will be joining seven of the world's top 10 women's players for the Brisbane tournament including No.1-ranked Victoria Azarenka and No.2 Maria Sharapova.
The five-time Australian Open winner played at last year's Brisbane International but pulled out with an ankle injury at the quarter-final stage.
The Brisbane International begins on December 30.