The Australian singer, 45, admits that she will be busy with tour commitments next year.
In an interview with today's Mirror (22 March), she said: "I'm touring this year and the timings wouldn't work.
"Being on the show is a huge commitment. I have loved it although there have been parts which have been really difficult, too taxing and emotional."
Kylie was bought in on a rumoured £500,000 to replace previous coach Jessie J, who quit after two series on the singing talent show.
She sits in the famous revolving red chairs alongside fellow coaches will.i.am, Sir Tom Jones and Ricky Wilson.
She is currently promoting her new single 'Into The Blue', which she sang on last night's Sport Relief.
She also performed her famous hit 'Especially For You' alongside host David Walliams and her ex-boyfriend Jason Donovan - who duetted with Kylie on the original hit in the late 80s.
In the funny sketch, David Walliams (dressed as Jason) and the real Jason were in love with each other, while Kylie was left out in the cold... Not likely in real life!
The Voice live shows kick off tonight at 6.45pm on BBC1.
Will you be sorry to see Kylie Minogue leave The Voice? Tell us what you think in the comment box below!
Watch the video to Kylie's single 'Into The Blue':