A joint will is one will for two people, often for a married couple, which acts as a last will and testament for both. It has specific rules, often stated in the will itself, which include that after the first spouse dies, that spouse's entire estate goes to the surviving spouse. When the second spouse dies, the estate usually goes to the couple's children. Couples who want a joint will often presume that this type of will is easier and cheaper than having two separate wills because they want the same things anyway. Unfortunately, this doesn't factor in how courts and some states view these wills, or the problems having a joint will creates, because joint wills for married couples often make things difficult for the surviving spouse.