The exit will mark the end of the former Colbys actor's 12-month stint as love rat Mark Wylde.
Maxwell said: "I can't believe how fast my year in beautiful Yorkshire has flown by - but there was only so long Mark could keep those two women on the boil before he was the one getting burned, I'm confident the viewers will find this story gripping to the very end."
Millionaire Mark arrived in the Dales with his wife Natasha (Amanda Donohoe) in search of a tranquil life.
But his first wife Faye (Kim Thomson) tracked him down and exposed him as a bigamist with a false name and a secret son, Ryan (James Sutton).
The nature of Mark's exit from the village is being kept under wraps, but series producer Gavin Blyth promised viewers would be kept gripped.
Gavin added: "We could see history repeated and Mark ditch the Dales for a brand new life. Or will he keep his promise and leave the village with ex flame Faye? Perhaps a twist will ensue and Natasha will get her man for keeps, or could something far more sinister rid Mark of his demons forever?
"This is the final act to be played out for Mark Wylde and it's guaranteed to be as unpredictable and explosive as when any major character leaves Emmerdale."