OutKast member Big Boi is the latest celeb whose debt to Uncle Sam has been revealed. According to reports, the Atlanta native, who is one-half of the rap group Outkast owes over $55,000 in unpaid taxes. The state of Louisiana filed a lien against Big Boi born Antwan Patton, and his wife for $55,727 on June 1 in Fulton County Superior Court.

As a member of Outkast, Big Boi and his partner Andre "3000" Benjamin ranked No. 13 on Forbes' 2007 Hip-Hop Cash Kings list. Collectively they pulled in a reported $14 million. They have taken since a break. Their last effort was 2003 'Speakerboxx/The Love Below', which became their first album to debut atop the Billboard Hot 100 charts spawned the hits including 'Hey Ya!' and 'The Way You Move.'

Big Boi is said to be prepping the release long-delayed solo project, 'Sir Lucious Left Foot: The Son of Chico Dusty.' "That's me," he said of the album's title. "That's the grown-man version of Big Boi. The Son of Chico Dusty -- that just goes deeper into who I am. Chico Dusty actually is my father, who is a bad bad man. Very smart, but a bad bad man. At the same time, I'm in my father's shoes, and I'm ready for whatever."

Neither he nor his wife has commented on his current tax troubles.