What Is a Prenuptial Agreement: What It Covers and How to Create One

This article is for informational purposes only and does not constitute legal advice. Consult a qualified attorney before taking any legal action.

What Is a Prenuptial Agreement?

A prenuptial agreement — also known as a premarital agreement, antenuptial agreement, or colloquially a "prenup" — is a legally binding contract executed by two individuals before they marry. The agreement specifies how assets, debts, and other financial matters will be treated during the marriage and in the event of divorce, separation, or the death of one spouse. A prenuptial agreement effectively allows couples to establish their own financial rules rather than having default state law provisions — which vary widely — apply automatically.

Historically associated with wealthy individuals protecting family fortunes, prenuptial agreements have become more mainstream in recent decades as individuals enter first marriages later in life, often with accumulated assets, investment accounts, real estate, or business interests they wish to protect. Second marriages, particularly those involving children from prior relationships, are another common context.

What a Prenuptial Agreement Can Cover

• Classification of property: Defining which assets brought into the marriage remain separate property and which will become marital property subject to division upon divorce.
• Division of assets upon divorce: Establishing specific rules for how marital property will be divided — departing from the state\'s default equitable distribution or community property rules.
• Spousal support (alimony): Limiting, expanding, or waiving alimony in the event of divorce. Some states allow parties to waive alimony entirely in a prenup; others restrict such waivers.
• Protection of business interests: Ensuring that a business owned by one spouse before marriage does not become subject to division or valuation claims in divorce.
• Inheritance rights: Clarifying what a surviving spouse will (or will not) receive from the deceased spouse\'s estate, particularly in second marriages where children from a prior relationship have inheritance interests.
• Debt allocation: Specifying which pre-marital and marital debts each party is responsible for.
• Financial responsibilities during marriage: Defining how bills will be paid, how joint accounts will operate, or savings contribution expectations.

What a Prenuptial Agreement Cannot Cover

Legal Requirements for Enforceability

Courts will scrutinize prenuptial agreements and may refuse to enforce them if certain conditions are not met. The Uniform Premarital Agreement Act (UPAA), adopted in some form by roughly 28 states, provides a framework, but requirements vary by state.

General Enforceability Requirements

• Written and signed: Oral prenuptial agreements are not enforceable; the agreement must be in writing and signed by both parties.
• Full financial disclosure: Both parties must fully disclose their assets, debts, and income. A party who hid significant assets before signing may find the agreement voided.
• Voluntary execution: Neither party may have signed under duress, coercion, or undue influence. Agreements signed the night before a wedding have been challenged on this basis, though timing alone is rarely dispositive.
• Independent legal representation: While not required in all states, courts look favorably on agreements where each party was represented by their own attorney. Some states require this for the agreement to be binding.
• Unconscionability: Courts may void terms that are grossly unfair at the time of enforcement, particularly if circumstances have changed dramatically from expectations at the time of signing.

Community Property vs. Equitable Distribution States

State law provides the default backdrop against which a prenup operates. In the nine community property states (Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, and Wisconsin), assets acquired during marriage are generally owned 50/50 by both spouses. In the remaining equitable distribution states, courts divide marital property "equitably" — meaning fairly but not necessarily equally. A prenup can modify either framework substantially.

Practical Process for Creating a Prenuptial Agreement

• Begin the process well in advance of the wedding date — ideally months before — to avoid any argument of duress from the timing.
• Each party hires their own attorney (this is strongly recommended).
• Both parties disclose all assets, liabilities, and income completely and with supporting documentation.
• Attorneys negotiate the terms and draft the agreement.
• Both parties review, negotiate, and ultimately sign the document in the presence of their respective attorneys and, typically, a notary.

Postnuptial Agreements

A postnuptial agreement is essentially the same type of contract entered into after the marriage has occurred. Courts in most states apply the same or stricter scrutiny to postnuptial agreements than to prenuptial agreements, because the parties are already in a fiduciary relationship to one another at the time of signing, creating a heightened risk of pressure or unfair dealing.

Conclusion

A prenuptial agreement is a practical legal tool that can bring clarity, protection, and peace of mind to couples entering marriage with significant assets, business interests, children from prior relationships, or simply a desire to define their financial relationship on their own terms. Its enforceability depends on fairness, transparency, voluntariness, and proper legal execution. Given the stakes involved and the state-specific nature of family law, consulting a qualified family law attorney in the relevant jurisdiction is essential before drafting or signing any prenuptial agreement.