Neilson and his former wife, Judith, have two children. In 2009, Kerr and Judith Neilson opened the White Rabbit Gallery in Sydney to share with the public their extensive collection of contemporary Chinese art. Kerr and Judith Neilson divorced in 2015. Kerr has been listed on the BRW Rich 200 since 2011. Following his divorce, according to the BRW his net worth fell from A$3.35 billion to A$2 billion in 2015, and to A$1.95 billion in 2016. Meanwhile, his former wife, Judith Neilson debuted on the 2015 BRW Rich 200 with a net worth of A$1.55 billion in 2015, and was assessed as having a net worth of A$1.45 billion in 2016.