The 30-year-old said he upped the compensation claim by A$4m to include potential lost earnings from match performances and sponsorship deals.
In a claim filed on Wednesday he also said the Wallabies would have had a "superior performance" at the Rugby World Cup in September if he had been playing.
Folau, who was one of Australia's highest-paid athletes, was fired in May after he made comments on social media that Rugby Australia deemed "anti-gay".
Folau posted on his Instagram account in April that read: "Drunks, homosexuals, adulterers, liars, fornicators, thieves, atheists and idolators - Hell awaits you."
A panel found him guilty of a "high level breach' of the players" code of conduct and upheld a decision by Rugby Australia to sack him.
Folau's case will be heard in the Federal Circuit Court in February 2020.
In June, Folau raised more than A$2m in a crowdfunding campaign to help with court fees.
An earlier fundraiser on GoFundMe was shut down by the company from promoting discrimination.
Last week Folau was criticised by Australian Prime Minister Scott Morrison for saying that the country's deadly bushfires were linked to the nation's stance on abortion and same-sex marriage.
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