The Irish singer rose to fame as a member of the Flying Without Wings hitmakers in the late 1990s and they split for good in 2012 after completing a farewell tour.
Now Egan, who serves as a mentor on the Irish version of reality TV contest The Voice, reveals he will be resuming his music career as a solo star.
Breaking the news to fans on Twitter on Tuesday, he wrote: "Excited to announce I have signed a record deal today with Warner bros. My debut album will be released on March 17th 2014".
Following the announcement, Egan added: "I am incredibly excited to be recording an album with Warner Music. Music is my first love, and to be able to get in the studio to record these amazing songs by such wonderful writers is such a thrill and an honour for me."
The singer's public profile was given a big boost in December after he was crowned the king of the jungle following a stint on I'm a Celebrity... Get Me Out of Here!
He won't be the first Westlife star to break out on his own - Shane Filan unveiled his debut solo album, You and Me, in November, while Brian McFadden quit the group in 2004 to release his own music.