A Harris Poll of 2,148 U.S. adults released July 6, 2026 found that 53% of engaged or married Americans under age 45 have signed a prenuptial agreement — up from roughly 8% in the 1990s. For California couples, this shift matters because a valid prenup can override the state's default 50/50 community property rules under Cal. Fam. Code § 760.
Key Facts
| Item | Detail |
|---|---|
| What happened | Harris Poll found 53% of engaged/married Americans under 45 have signed a prenup |
| When | Results released July 6, 2026 |
| Sample | 2,148 U.S. adults surveyed |
| Historical baseline | Roughly 8% prenup rate in the 1990s — a ~6.6x increase |
| Who's affected | Couples under 45 marrying later with more premarital assets |
| Key statute (CA) | Cal. Fam. Code § 1615 governs enforceability |
| Impact | Prenups now mainstream, not niche — reframed as financial clarity |
Why this matters legally
This poll confirms that prenuptial agreements have become a mainstream financial-planning tool, not a signal of distrust. When more than half of younger married and engaged couples have signed one, courts, financial advisors, and family law attorneys are handling these agreements as routine documents rather than red flags. The Harris Poll data, released July 6, 2026, reflects a generational shift: couples under 45 are marrying later, entering marriage with retirement accounts, equity, business interests, and student debt worth protecting.
The legal significance is concrete. A prenuptial agreement is a binding contract that alters what would otherwise happen under state default law. In California — a community property state — the default rule is that assets and income acquired during marriage are divided equally (50/50) at divorce. A prenuptial agreement can change that default, converting community property into separate property or waiving spousal support entirely, provided the agreement meets statutory validity requirements.
How California law handles this
California enforces prenuptial agreements under the Uniform Premarital Agreement Act, codified at Cal. Fam. Code § 1600 and following sections. To be enforceable, an agreement must be in writing and signed by both parties under Cal. Fam. Code § 1611. The most litigated provision is Cal. Fam. Code § 1615, which lets a court refuse to enforce a prenup if it was not executed voluntarily or was unconscionable when signed.
California imposes two of the strictest procedural safeguards in the country. First, under Cal. Fam. Code § 1615(c), a party must have at least seven calendar days between first receiving the agreement and signing it — the seven-day rule. Second, any waiver of spousal support is unenforceable unless the waiving party was represented by independent legal counsel when signing, per Cal. Fam. Code § 1612. These rules mean a rushed, one-sided prenup signed the week of the wedding without lawyers is vulnerable to challenge.
California also requires fair and reasonable disclosure of each party's assets and debts. If one spouse hides a business valuation or a retirement account, the agreement can be voided as involuntary under Cal. Fam. Code § 1615. This mirrors the disclosure philosophy behind the state's equitable distribution framework, though California technically follows community property rather than pure equitable distribution.
One caveat: child support and child custody cannot be predetermined by a prenup in California. Courts retain authority over children's interests regardless of what a couple agreed to before marriage. A prenup can address property and spousal support, but it cannot bind a judge on parenting arrangements.
Practical takeaways
-
Build in time. Under Cal. Fam. Code § 1615(c), give the other party at least seven days to review the agreement before signing. Signing days before the wedding is a leading ground for later challenge.
-
Get independent counsel. To waive spousal support in California, each party must have their own attorney per Cal. Fam. Code § 1612. One lawyer for both spouses does not satisfy this requirement.
-
Disclose everything. List all assets, debts, income, and business interests in a schedule attached to the agreement. Incomplete disclosure is the fastest way to void a prenup under Cal. Fam. Code § 1615.
-
Know what a prenup cannot do. It cannot set child support or custody, cannot include terms that violate public policy, and cannot penalize a spouse for filing for divorce.
-
Consider a postnup if you are already married. Couples who missed the prenup window can achieve similar clarity through a postnuptial agreement, though these face heightened fiduciary scrutiny under California law.
-
Revisit the agreement after major life changes. A prenup signed before children, a home purchase, or a business launch may need amendment to reflect new realities.
If you are engaged, already married, or reconsidering your financial arrangements, a personalized divorce roadmap can help you understand where a prenup or postnup fits into your plans. When the questions get specific to your assets and jurisdiction, it is worth speaking with a licensed professional — you can find a divorce attorney in your area to review your situation.
This article discusses recent news and provides general legal commentary. It does not constitute legal advice. Every case is unique. Consult a qualified family law attorney for advice specific to your situation.