The late Michael Jackson’s estate is facing a dispute over tax with the IRS in the US.

Following the singer’s death back in 2009, there have been a number of disputes within the Jackson family over whether his will was authentic.

Now the estate is set to see further problems due to the IRS claiming that $505 million is owed in taxes due to it being worth $1.125 billion rather than the $7million that was reported at the time of his death.

In addition to concerns over unpaid tax, there is also a dispute relating to the value of the Beatles’ music catalogue which Michael bought when he was at the height of his musical career.

A spokesperson has yet to comment.