Prenuptial Agreements in California

Learn the basics of prenuptial (pre-marital) agreements and how they work in California.

By Melissa Heinig , Attorney · Cooley Law School

Based on Your Previous Answers, We Have a Few Last Questions

These additional details allow our attorneys to gain a deeper understanding of the specifics of your case

Submit Close Considering Divorce? We've helped 85 clients find attorneys today.

If you're planning on getting married, a prenuptial agreement (also known as a "premarital agreement," or sometimes simply a "prenup") might be the last thing on your mind. On the other hand, if it isn't your first marriage, or if you have significant property or savings built up, you may already be wondering if a prenup would be a good idea.

Whatever your situation, a premarital agreement can provide you and your new spouse with clarity regarding what will happen with your property and finances if the two of you split up in the future.

Legal Requirements of California Prenuptial Agreements

The Uniform Premarital Agreement Act (UPAA) has applied to California prenups since 1986. In general, this law states that written prenuptial agreements signed by both parties, in contemplation of marriage will automatically become effective once the couple marries. An agreement can cover a couple's present and future property rights, as well as other matters related to the marriage, but it can't negatively affect a child's right to child support or take away a court's power to control child custody and visitation after marriage.

Principles of general contract law also apply to prenuptial agreements. Agreements require valid consent, meaning that a person must have the mental ability to consent, and that consent cannot be the result of fraud, inappropriate influence, or mistake.

Amendments to the UPAA that apply to California prenuptial agreements made after 2002 state that agreements will be enforced against a spouse only if that spouse: