Tony McCluskie, 35, was arrested on Wednesday (February 7) after the actress's headless and limbless torso was found in a Hackney canal.
He will appear before Thames Magistrates' Court on Monday (March 12).
29-year-old Gemma, who appeared as Kerry Skinner in the soap throughout 2001, disappeared from Bethnal Green, east London, last Thursday (March 1).
Divers are continuing to search the canal for her missing body parts and police are currently reviewing CCTV footage from a hospital opening ceremony in Whitechapel on the day of her death, the last place she was seen alive.
Detective Superintendent Fiona Mallon, who is leading the investigation into Gemma's death, said recently: "We urge anyone with any significant information about this case to contact us as soon as possible.
"In particular we would like to hear from anyone who may have seen any suspicious activity around her home address in Pelter Street in Bethnal Green."
Gemma's EastEnders co-stars Joe Swash, Brooke Kinsella and Dean Gaffney have all paid tribute to her on Twitter.
An EastEnders spokesperson told Digital Spy today (March 10): "We are extremely saddened to hear the devastating news about Gemma McCluskie. Our thoughts are with her family and friends at this difficult time."