Prenuptial Agreement Drafting Under the UPAA

A prenuptial agreement (commonly called a prenup) is a legally binding contract signed by two people before marriage that establishes how assets, debts, and financial matters will be handled during the marriage and in the event of divorce. A prenuptial agreement defines the financial rights and obligations of each spouse before marriage begins.

The modern prenup is no longer reserved for the ultra-wealthy or celebrity couples. Today, prenuptial agreements are used by first-time homebuyers protecting down payment contributions, entrepreneurs safeguarding business equity, individuals with student loan debt establishing responsibility boundaries, couples entering second marriages with children from prior relationships, and anyone who wants financial clarity before walking down the aisle. In 2026, approximately 15% of engaged couples sign a prenup, a figure that has tripled in the past decade as the stigma around premarital agreements has faded.

Separate property remains individually owned unless commingling converts it to marital property. Without a prenup, the distinction between separate property (what you owned before the marriage) and marital property (what you acquired during the marriage) is governed entirely by your state's default laws. In community property states, that means a 50/50 split. In equitable distribution states, a judge divides assets based on fairness, which may not align with your expectations. A prenup lets you override these defaults with terms you and your partner choose together.

The risk of commingling, where separate assets become mixed with marital funds and lose their protected status, makes prenups especially valuable. A business owner who deposits business income into a joint checking account, or a spouse who uses inherited funds to renovate the marital home, may unintentionally convert separate property into marital property. A properly drafted prenup anticipates these scenarios and preserves the original character of each asset. You can explore how our attorney-drafted estate planning works alongside prenups to protect inherited wealth and family trusts.

Prenuptial agreement enforceability is governed primarily by the Uniform Premarital Agreement Act (UPAA), which has been adopted in some form by 28 states. The UPAA establishes baseline requirements: the prenup must be in writing, signed by both parties, and entered voluntarily. The Uniform Premarital Agreement Act requires voluntary execution and written form for prenuptial enforceability.

However, states diverge significantly on critical details. Some states, including California, require that both parties have independent legal counsel or expressly waive the right to counsel in writing. Other states do not mandate independent representation but consider its absence when evaluating voluntariness. Several jurisdictions require a mandatory waiting period between presenting the prenup and the wedding date, with California specifically requiring seven days minimum for review.

Full financial disclosure is the single most important enforceability factor across all states. Full financial disclosure is the most critical factor in prenuptial agreement enforceability. Courts routinely throw out prenups when one party failed to disclose assets, debts, income, or financial obligations. A proper disclosure schedule lists every bank account, investment, real property, business interest, retirement fund, and outstanding liability, with approximate values. Hiding assets or undervaluing them can constitute fraud, voiding the entire agreement.

The concept of unconscionability provides an additional safeguard. Even a prenup that meets all procedural requirements can be invalidated if a court finds the terms are so one-sided that enforcement would be unjust. Some states evaluate unconscionability at the time of signing, while others look at circumstances at the time of enforcement. A handful of states, notably Connecticut, examine both. This means a prenup that was fair when signed could become unconscionable if one spouse becomes seriously ill or disabled during the marriage.

A sunset clause is a provision that causes the prenup, or specific provisions within it, to expire after a set number of years of marriage. For example, a couple might agree that alimony waiver provisions expire after 15 years of marriage, or that the entire prenup becomes void after 20 years. Sunset clauses can actually strengthen enforceability by demonstrating that the agreement was designed to be fair and not permanent in situations where circumstances were expected to change. Our agreement drafting service applies the same rigorous state-specific compliance standards to prenuptial agreements as it does to all legal documents.