Prenuptial agreements are not just for the rich. While they are often used to protect the assets of the wealthy, couples of more modest means are increasingly turning to them for their own purposes. For example, a marrying couple with children from prior marriages may use a prenup to spell out what will happen to their property when they die, so that they can pass on separate property to their children. Without a prenuptial agreement, a surviving spouse might have the right to claim a large portion of the other spouse’s property, leaving much less for the kids.