The 30-year-old refused to answer questions from reporters when he was dropped off in a grey ute outside Castle Hill Police Station yesterday.
The two-time Dally M award-winner spent 10 minutes with police before trying to dodge the cameras as he got back into the ute and drove off.
NSW Police confirmed the charge, which came after a 26-year-old woman lodged a complaint to the NRL Integrity Unit earlier this year.
The alleged incident occurred on September 30, on NRL grand final night, at a home in the NSW Hunter region after Hayne and the woman met via social media, police said.
The woman claims she was badly bitten and first reported the incident to the NRL, which then referred the matter to police.
Hayne was questioned at the Ryde Police Station on Monday afternoon and later charged with "aggravated sexual assault inflict actual bodily harm on victim".
Hayne had finished his current contract at the Parramatta Eels on October 31, however the club said they were continuing to provide welfare support.
An Eels spokesperson said as it was a criminal matter, the club would make no further comment.
Hayne was given conditional bail and is due to appear at Burwood Local Court on December 10.
According to court documents, his bail conditions included reporting to police three times a week and surrendering his passport.
Hayne is prohibited from entering international airports or the Newcastle local government area, and must not contact the woman or any witness.