Asia: Family and Matrimonial

Many parents worry about what will happen to their hard-earned assets after they die. Some worry, in particular, that one of their children may challenge their will and unravel the careful plans they have made. One approach (but fairly extreme strategy), is to restructure assets during their lifetime, transferring property or control of family trusts to a trusted child so that there is less in the estate for anyone to fight over. But can those lifetime transfers themselves be unwound later, on the basis that the parent was taken advantage of?