"I'm touring this year and the timings wouldn't work," the 45-year-old confirmed. "I have loved it although there have been parts which have been really difficult, too taxing and emotional.
Kylie and Ricky have become good friends after judging on the show together
"You can't second-guess yourself. You deal with a lot of decisions and emotions."
Ricky isn't the only member of The Voice panel hoping she will change her mind. Sir Tom Jones has said he thinks the BBC "should do whatever they can to keep Kylie".
"It works how it is right now," he told the Mirror. "With the four of us, I think it's a good combination. It's working now, so why spoil it. Why change it?"
The BBC, meanwhile, have said it is too early to "speculate" about Kylie's future on the show.
Sir Tom Jones has said that he thinks the four judges are a good combination
"Kylie is a fantastic addition to the coaching line-up." a spokesperson said."We are aware of Kylie's touring commitments and are looking to accommodate them so that if the series is recommissioned she could return to her coaching role.
"Discussions are ongoing and it's too early to speculate as we've not finished this series yet."
Kylie's exit would certainly come as a blow to the BBC. Her debut appearance alongside Sir Tom, Ricky and Will.i.am helped attract 8.4 million viewers — two million more than in the previous year, when Jessie J and Danny O'Donoghue appeared alongside Tom and Will.