Ewing previously signed with a US talent management company, prompting speculation that he would be leaving the soap.
However, the actor, who has played Heath Braxton for three years, has now confirmed that he is due to leave.
Speaking to TV Week, Ewing said: "I will say I do go, but I am not sure about the exact date yet. It will be fun - and scary."
Ewing also hinted that Steve Peacocke and Lincoln Younes, who play Heath's brothers Brax and Casey, could be bowing out of the soap as well.
He said: "They are going to scatter us a bit. We are not all going to leave at the same time.
"One of us has to die. It could be a cool exit like a shark attack. One has to get a career elsewhere, and another has to follow a chick out of town. Another might stay longer."
Reflecting on his time on Home and Away, Ewing added: "I think the River Boys did bring something different. They brought a new edge to the show."
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