Nic Cage Half-Way Back To Solvency

According to official documents obtained by TMZ ... Cage paid off the $6,257,005 he failed to pay in federal income tax for 2007.

It's a huge step ... considering Cage fell around $13 million behind in taxes for 2002, 2003, 2004 and 2007. Cage blamed his former business manager for driving him to what he called "financial ruin."