A postmarital agreement is an agreement made after two parties are married. Unlike premarital agreements, postmarital agreements are not governed by the Arizona Uniform Premarital Agreement Act. However, they often serve the same purpose. A properly executed postmarital agreement will often dictate how financial debts, obligations, and assets are split should the parties divorce. In order to execute a fully valid and enforceable agreement, it is important that you seek the legal expertise of a qualified attorney.