Since Micheal Jackson death, His Estate has made $2billion

According to TMZ

The estate has grossed nearly $2 billion since MJ's death. The money comes from the movies "This is It," the Cirque show "Michael Jackson: The Immortal World Tour," 50 million albums sold and various other ventures.
After expenses, that $2 bil gets whittled down to around $800m - which is a very good return. But the $800 mil gets significantly cut by taxes - we're told to around $450 mil.

MJ's debts at the time of his death were around $500 million, so just on those 2 numbers the estate approaches being in the black.
But there are other ventures, like Sony, where the estate generates a lot of cash.
As for Michael's kids, there's a trust where millions gets distributed as they get older.
Our sources familiar with the financials tell TMZ ... if the estate were completely liquidated today, each kid would get around $100 million. Never miss our updates again. Download our Android app from your mobile phone here Live on Mobango or on the Amazon play store Submit Your Email Here, to get them our updates first for free. Remember to verify the Mail that will be sent to you. Follow us on Twitter @loadedcrew & like us on facebook @Loadedteam