The United Kingdom as of 2007 does not enforce prenuptial agreements (although there have been some notable exceptions). They also do not have a provision for marital regimes.
There are two types of prenuptial agreements: marriage contract for people who are married or about to be married, and cohabitation agreement for unmarried couples. A variation for people who are already married is a postnuptial agreement, also called a postmarital agreement.
Postnuptial agreements are similar to prenuptial agreements, except that they are entered into after a couple is married.
Historically, judges in the United States frowned upon prenuptial agreements as corrupting what marriage was supposed to stand for, and often they would not recognize them. Nowadays they are recognized, although they may not always be enforced. Both parties should have lawyers represent them to ensure that the agreement is enforceable. In some cases, the parties retain a private judge to be present during the signing, to be sure that neither party has been coerced into the agreement. Some attorneys recommend videotaping the signing, although this is exceptional. Some states such as California require that the parties be represented by counsel if spousal support (alimony) is limited.
Prenuptial agreements are, at best, a partial solution to obviating some of the risks of marital property disputes in times of divorce. They are not the final word. Nevertheless, they can be very powerful and limit parties property rights and alimony. It may be impossible to set aside a properly drafted and executed pre-nup. A pre-nup can dictate not only what happens if the parties divorce, but when they die. They can act as a contract to make a will and/or eliminate all your rights to property, probate homestead, probate allowance, right to take as a predetermined heir, and the right to act as an executor and administrator of your spouses' estate.
Under the Statute of Frauds, a prenuptial agreement is only valid if it is completed prior to marriage. After a couple is married, they may draw up a post-nuptial agreement.
Prenuptial agreements in all U.S. states are not allowed to regulate issues relating to the children of the marriage, in particular, custody and access issues. The reason behind this is that matters involving children must be decided in the children's best interests. However, this is controversial: some people believe that as custody battles are the worst part of a divorce, couples should be able to settle this in advance.
With respect to financial issues ancillary to divorce, prenuptial agreements are routinely upheld and enforced by courts in virtually all states. There are circumstances in which courts have refused to enforce certain portions/provisions of such agreements. For example, in an April, 2007 decision by the Appellate Division in New Jersey, the court refused to enforce a provision of a prenuptial agreement relating to the wife's waiver of her interest in the husband's savings plan. The New Jersey court held that when the parties executed their prenuptial agreement, it was not foreseeable that the husband would later increase his contributions toward the savings plan.
In California, there is one case that recognized an oral, executed prenup (Hall v. Hall) in the probate of an estate. Parties can waive disclosure beyond that which is provided, and there is no requirement of notarization, but it is good practice. There are special requirements if parties sign the agreement without attorney, and the parties must have independent counsel if they limit spousal support (also known as alimony or spousal maintenance in other states). Parties must wait seven days after the premarital agreement is first presented for review before they sign it, but there is no requirement that this be done a certain number of days prior to the marriage. Prenups often take months to negotiate so they should not be left until the last minute (as people often do). If the prenup calls for the payment of a lump sum at the time of divorce, it may be deemed to promote divorce. This concept has come under attack recently and a lawyer should be consulted to make sure the prenup does not violate this provision.
In California, an agreement is very powerful. A couple can waive their rights to share property (community property). It can limit spousal support (although a court at the divorce can set this aside if it deems that the limitation is unconscionable). The agreement can act as a contract to make a will requiring one spouse to provide for the other at death. It can also limit probate rights at death, such as the right to a probate allowance, a probate allowance, the right to act an executor, the right to take as a predetermined heir, and so forth.
In California, Registered Domestic Partners may also enter into a prenup. Prenups for Domestic Partners can have added complexities because the Domestic Partner does not have the benefit of federal tax law that favors married couples.
In California, courts have not allowed penalties in prenups that sanction people for infidelity or using recreational drugs. Court will not enforce requirements that one person will do the dishes or that the children will be raised in a certain religion.
Postmarital agreements are treated very differently in California law. Spouses have a fiduciary duty to one another so premarital agreements come under a special category of agreements. There is a presumption that the postmarital agreement was obtained by undue influence if one party gains an advantage. Disclosure cannot be waived in the context of a postmarital agreement.
Of note, unlike all other contract law, consideration is not required, although a minority of courts point to the marriage itself as the consideration. Through a prenup, a spouse can completely waive rights to property, alimony or inheritance as well as the elective share and get nothing in return.
A sunset provision may be inserted into a prenuptial agreement, specifying that after a certain amount of time, the agreement will expire. In a few states, such as Maine, the agreement will automatically lapse after the birth of a child, unless the parties renew the agreement. In other states, a certain number of years of marriage will cause a prenuptial agreement to lapse. In states that have adopted the UPAA (Uniform Premarital Agreement Act), no sunset provision is provided by statute, but one could be privately contracted for. Note that states have different versions of the UPAA.
Choice of law provisions are critical in prenups. Parties to the agreement can elect to have the law of the state they are married in govern both the interpretation of the agreement and how property is divided at the time of divorce. In the absence of a choice of law clause it is the law of the place the parties divorce, not the law of the state they were married that decides property and support issues.
In drafting an agreement, it is important to recognize that there are two types of state laws that govern divorce equitable distribution, of which there are 41 states and 9 states that are some variation of community property. An agreement written in a community property state may not be designed to govern what occurs in an equitable distribution state and vice versa. It may be necessary to retain attorneys in both states to cover the possible eventuality that the parties may live in a state other than the state they were married. Often people have more than one home in different states or they move a lot because of their work so it is important to take that into account in the drafting process.
There are several ways that a prenuptial agreement can be attacked in court. These include lack of voluntariness, unconscionably, and a failure to disclose assets.
Prenuptial agreements are a matter of civil law, so Catholic canon law does not rule them out in principle (for example, to determine how property would be divided among the children of a prior marriage upon the death of one spouse).
In practice, prenuptials may run afoul of Church law in a number of ways. For example, they cannot subject a marriage to a condition concerning the future (such as an agreement about the dividing of assets in case of divorce). The Code of Canon Law provides: "A marriage subject to a condition about the future cannot be contracted validly." (CIC 1102)
The Canon Law: Letter and Spirit, a commentary on canon law, explains that condition may be defined as "a stipulation by which an agreement is made contingent upon the verification or fulfillment of some circumstance or event that is not yet certain." It goes on to state that "any condition concerning the future attached to matrimonial consent renders marriage invalid." For example, a marriage would be invalid if the parties stipulated that they must have children or they have the right to divorce and remarry someone else.
Recently, a movement supporting an additional prenuptial agreement has emerged in some Modern Orthodox circles. This is in response to a growing number of cases in which the husband refuses to grant a religious divorce. In such matters, the local authorities are unable to intervene, both out of concerns regarding separation of church and state and certain halakhic problems that would arise. This situation leaves the wife in a state of aginut, in which she is unable to remarry. To remedy this situation, the movement promotes a prenuptial agreement in which the couple agrees to conduct their divorce, should it occur, in a rabbinical court.