Summarize California pre-nuptial agreement law
California prenuptial agreements are generally enforceable if they are in writing, signed by both prospective spouses, and executed in compliance with the Uniform Premarital Agreement Act, but enforcement can fail if the agreement was involuntary or unconscionable at execution, or if a spousal-support waiver does not satisfy California’s special statutory requirements. The core statute is Cal. Fam. Code §§ 1610–1617, especially Cal. Fam. Code § 1611, Cal. Fam. Code § 1612, and Cal. Fam. Code § 1615.[1][2][3][4]
Bottom line
A California premarital agreement is enforceable unless the party opposing enforcement proves either:
(1) the agreement was not executed voluntarily; or
(2) the agreement was unconscionable when executed and there was inadequate disclosure, no written waiver of further disclosure, and no adequate knowledge of the other party’s finances.[4]
Key statutory rules
1. Formation and scope
A premarital agreement must be:
- in writing;
- signed by both parties; and
- made in contemplation of marriage and effective upon marriage.[4]
The parties may contract about a broad range of matters, including:
- property rights and management;
- disposition of property at separation, dissolution, death, or another event;
- wills, trusts, insurance proceeds, and choice of law;
- and other matters not contrary to public policy or a criminal statute.[7]
But:
- child support may not be adversely affected; and
- a spousal-support waiver is subject to special enforceability rules.[7][4]
2. Spousal support provisions
Under Cal. Fam. Code § 1612(c), a spousal-support provision, including a waiver, is unenforceable if:
- the party against whom enforcement is sought was not represented by independent counsel when the agreement containing the provision was signed, or
- the provision is unconscionable at the time of enforcement.[4][7]
3. Unconscionability and disclosure
Under Cal. Fam. Code § 1615(a)(2), a premarital agreement is unenforceable if, when executed:
- it was unconscionable, and
- before execution the resisting party was not given a fair, reasonable, and full disclosure of the other party’s property or financial obligations,
- did not voluntarily and expressly waive further disclosure in writing, and
- did not have, and reasonably could not have had, adequate knowledge of the other party’s finances.[1][4]
The statute directs that unconscionability is decided by the court as a matter of law.[1][4]
Voluntariness: California’s detailed procedural safeguards
California’s modern statute creates a strong presumption that a prenup was not voluntary unless the court makes written or on-the-record findings satisfying specific safeguards.[1][2][4]
For agreements executed on or after January 1, 2020, the court must find, among other things:
-
The resisting party had independent counsel or, after being advised to seek counsel, expressly waived counsel in a separate writing; the advice to seek counsel must be given at least seven calendar days before the final agreement is signed.[1][2][4]
-
The resisting party had at least seven calendar days between first being presented with the final agreement and signing it, regardless of whether represented by counsel.[1][2][4]
-
If unrepresented, the party was fully informed of:
-
The agreement and required writings were not executed under duress, fraud, or undue influence, and the parties had capacity.[1][2][4]
Leading California case law
In re Marriage of Bonds, 24 Cal. 4th 1 (2000)
California’s leading Supreme Court decision holds that the absence of independent counsel does not automatically invalidate a premarital agreement. Rather, lack of counsel is a factor in the voluntariness analysis.[5]
The court emphasized that:
- voluntariness turns on the totality of circumstances;
- relevant factors include coercion, surprise, disclosure, sophistication, timing, and understanding of rights waived; and
- the party challenging enforcement bears the burden of proving involuntariness under the statute.[5]
Michael v. Michael, 195 Cal. App. 4th 1062 (2011)
A Court of Appeal decision applying the amended statutory scheme observed that the seven-day review period in Cal. Fam. Code § 1615(c) is mandatory and can support a finding of voluntariness where satisfied.[6]
Practical summary
In practice, California prenups are strongest when:
- both parties have independent counsel;
- the agreement is delivered well before the wedding;
- there is full financial disclosure or a written waiver;
- the language is clear and the terms are explained;
- and the agreement avoids problematic spousal-support waivers unless the statutory safeguards are met.[1][2][4][5][6]