*Katt Williams can now add tax troubles to his mounting legal woes.

TMZ is reporting that the IRS just pimp slapped the comedian with a tax lien totaling over $4 million, claiming he failed to pay $3.2 million in taxes in 2008, and also bailed on another $829,352 in 2009.

Williams is also accused of stiffing the Feds in 2010, when the IRS filed another tax lien against the comedian totaling $284,000.

It’s the latest misfortune to befall Katt in the last few months — he’s been arrested several times and is facing a bunch of lawsuits.