In the United States, marital agreements are recognized in the 50 states and the District of Columbia, and are enforceable if prepared in accordance with state and state requirements. It has been reported that the demand for marriage contracts in the United States has increased in recent years, especially for millennial couples.     In a 2016 survey conducted by the American Academy of Matrimonial Lawyers (AAML), member lawyers reported that the total number of clients seeking premarital marriage arrangements has increased in recent years, particularly with the Millennial generation, with the greatest interest in protecting capital gains in the case of separate ownership, inheritance and shared ownership.  While a couple could enter into a marriage contract to discuss things that might happen during their marriage, these agreements are generally intended to address the problems that arise when the marriage breaks down. Marriage contracts are binding on the parties as a legal contract. They can be imposed by the courts if someone tries to evade a commitment that they have agreed to avoid or amend. Partition/exchange agreements: spouses can change the characterization of matrimonial property, often to transform their interest in common ownership into separate ownership. Some federal laws apply to conditions that may be included in a pre-marital contract. The Withdrawal Equity Act (REA) of 1984, signed on August 23, 1984 by President Ronald Reagan, reconciled confusion over whether ERISA anticipated state divorce laws, thereby preventing pension plans from complying with court injunctions granting a spouse a portion of the worker`s pension in a divorce decree.
 A matrimonial agreement may include exceptions whererightly agrees to revoke all rights against the other`s pension benefits arising from state and federal marriage laws, as in the context of the REA. Pre-marital agreement – An agreement between future spouses that establishes rights and obligations. It becomes effective when they get married. Some reasons for the preparation are the maintenance of the family patrimony for children from a previous marriage and the elimination or limitation of future support obligations. Others may be: a sunset arrangement can be inserted into a marriage agreement stipulating that the contract expires after a certain period. In Maine, it automatically expires after the birth of a child, provided the parties do not renew the contract if the parties do not renew the agreement.  In other countries, a number of years of marriage will result in the expiration of a marriage. In countries that have adopted the Uniform Premarital Agreement Act (UPAA), there is no sunset provision in the law, but one could be under private contract.
Note that the states have different versions of the UPAA. Marriage contracts can be changed or revoked at any time. Some couples add a sunset arrangement that terminates the contract after a certain time, for example. Ten years. Post-nuptial agreements are similar to marital agreements, except that they are made after a couple`s marriage.  When divorce is imminent, post-uptial agreements are called separation agreements.  However, it is important to note that there are a number of issues that the marriage agreement cannot contain. Rules for non-financial matters, such as tasks.
B, relationships with in-laws, agreements on surnames or custody of children, cannot be included in prenupes. Nor do marital agreements contain provisions contrary to public policy.