These agreements are drawn up by the couple and set conditions with regard to: the laws relating to marriage contracts vary from one State to another. In Florida, marriage contracts cannot affect the child`s custody or sustenance. In the event of divorce, the court calculates the child`s maintenance based on the child`s current needs. Parents cannot choose the amount of family allowances to be paid, as this is a right of the child. In addition, Florida uses the Uniform Prenuptial Agreement Act (UPAA) to determine whether the pre-secondary or post-secondary contract is applicable. The agreement must be signed by both spouses to have an attitude and comes into effect as soon as the couple is married. However, legitimacy is called into question when a spouse believes they can prove that they were signed involuntarily or against their will. This could be done by extortion or coercion.