It was earlier reported that the show bosses are trying to rope in Minogue as a judge, but she was unsure about it due to other work commitments.
"I'm excited to announce that I'll be coaching on 'The Voice' UK next season," Minogue posted on Twitter, reports contactmusic.com.
Minogue will join Tom Jones and Will.i.am on the judging panel.
"I'm very excited to become a coach on 'The Voice'. I love the concept of the show and have been an avid viewer of both series. The search for new talent is such an important aspect of the music industry and 'The Voice' gives us all a part to play in that," she said.