Lauryn Hill faces charges of failing to file federal income tax returns for over three years, throughout of which the singer earned more than $1.8 million. Hill had not filed an income tax return to the Internal Revenue Service (IRS) between the years 2005-2007, according to the Department of Justice. The $1.8 million in question came primarily from recording and film royalties. The three counts against Hill each carry a maximum sentence of one year in prison and a $100,000 fine. Hill also owns and operates four companies: Obverse Creations Music Inc., Boogie Tours Inc., L.H. Productions 2001 Inc. and Studio 22 Inc. Hill is scheduled to appear on the charges before U.S. Magistrate Judge Michael A. Shipp in Newark on June 29.