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Prenuptial agreements · Issue guide

Financial Disclosure for a Prenup

California law · Updated November 8, 2026

Three neat stacks of plain folders and a pen on a sunlit desk.
In brief

Under Family Code § 1615, a California prenup can fail when disclosure was not fair, reasonable and full, the terms were unconscionable, and no waiver was signed.

On this page
  1. What Financial Disclosure Means Under California's Premarital Agreement Law
  2. What Each Party Must Disclose
  3. How Disclosure Is Typically Documented
  4. The Voluntary Execution Requirement and the Seven-Day Rule
  5. When Incomplete Disclosure Makes a Prenup Unenforceable
  6. What a Prenup Cannot Do Under California Law
  7. Disclosure in the Context of a San Diego County Prenup
  8. Frequently asked questions
  9. Sources

For a California prenup, financial disclosure means each person gives the other a fair, reasonable and full picture of what they own and what they owe before signing. Under California law, leaving that out can help undo the agreement later if its terms were also unconscionable when signed, no written waiver of disclosure was signed, and the partner left uninformed did not have, or reasonably could not have had, adequate knowledge of those finances.

Most people facing a prenup are either the one asking for it or the one who has just been handed a draft. Often they have a wedding date on the calendar and a list of accounts, debts and a house or business they are not sure how to describe. The questions tend to be practical ones. How much has to be shared? Does a rough number count? What happens years from now if something was missed? This page walks through what California's premarital agreement law actually asks for. It also covers how disclosure is usually recorded, and how it connects to the other rules that decide whether a prenup holds up in a San Diego County courtroom.

What Financial Disclosure Means Under California's Premarital Agreement Law

Family Code section 1615 is the rule. California's premarital agreement statutes are known as the Uniform Premarital Agreement Act (Family Code section 1600). Section 1615(a) lists when a premarital agreement, which section 1610 defines as an agreement between prospective spouses "made in contemplation of marriage and to be effective upon marriage", cannot be enforced. One of the conditions is that the party resisting the agreement "was not provided a fair, reasonable, and full disclosure of the property or financial obligations of the other party."

Each of those three words does work. Fair points to honesty, so values are not shaded to look smaller. Reasonable points to a level of detail a sensible person could actually use. Full points to completeness, so nothing important is left off. A disclosure can be accurate in what it lists and still fall short if it leaves out something significant.

"Property" is defined broadly in section 1610. It means an interest, "present or future, legal or equitable, vested or contingent," in real or personal property, "including income and earnings." "Financial obligations" is the other half, meaning what a person owes. That covers loans, credit balances, taxes owed, and continuing payments such as support for a former spouse or a child.

Disclosure matters in both directions. The statute protects whichever party a spouse later tries to enforce the agreement against, so the partner with fewer assets discloses too. That partner's debts can matter as much as the other partner's holdings.

Prenup disclosure is also not the same thing as the disclosure that happens in a divorce. In a dissolution or legal separation case, Family Code section 2104 requires each party to serve a preliminary declaration of disclosure under penalty of perjury on a Judicial Council form, unless a court orders otherwise for good cause or another statute excuses it. The petitioner serves it with the petition or within 60 days of filing, and the respondent serves it with the response or within 60 days of filing the response. The parties' written agreement or a court order can extend those periods. That is a requirement at a different stage, under a different statute. Prenup disclosure happens before the wedding, as part of making the agreement.

What Each Party Must Disclose

The statute names two categories, property and financial obligations, and does not provide a checklist. In practice, disclosure schedules for California prenups commonly list the following on the asset side:

  • Real property, such as a home, a condo or a rental, wherever it is located
  • Bank, brokerage and investment accounts
  • Retirement accounts and pensions
  • Business interests, including ownership stakes and partnership interests
  • Intellectual property, such as royalties or patents
  • Income and earnings, which section 1610 places inside the definition of property
  • Expected inheritances or trust interests, where they are known

On the obligation side, schedules commonly list:

  • Mortgages and other secured loans
  • Student loans
  • Credit card balances
  • Tax liabilities
  • Child support or spousal support owed from a prior relationship

A list alone is not the test. The question under section 1615 is whether the disclosure gave the other person a real picture of the finances they were agreeing about. A schedule that names a business but gives no sense of its size, or lists a retirement account with no balance, may leave that picture blurry.

Disclosure also sits beside a related idea, unconscionability. That word means terms so one-sided that they are unfair in a way that shocks the conscience. Section 1615(b) is direct about who decides it: "An issue of unconscionability of a premarital agreement shall be decided by the court as a matter of law."

How Disclosure Is Typically Documented

The statute does not prescribe a format, so practice fills the gap. Disclosure is usually attached to the agreement as a schedule or exhibit, often one for each party. Each schedule lists assets and liabilities with approximate values. The agreement then refers to those schedules by name, so it is clear on the face of the document what each person was shown.

Supporting paperwork varies. Some couples sign sworn financial statements. Others attach or exchange recent account statements, appraisals, business valuations or tax returns. What these methods share is a record made at the time of signing, not one assembled after a dispute arises.

Timing is part of that record. Disclosure that is complete before the final agreement is presented gives each person a chance to read it alongside the terms. Numbers that arrive at the signing table, or afterward, make it harder to show later that the disclosure was actually provided "before execution of the agreement," which is the point in time section 1615(a)(2) looks to.

For someone who has been handed a prenup with blank exhibits, this section often matters most. The schedules are where the other person's finances become visible.

The Voluntary Execution Requirement and the Seven-Day Rule

Voluntariness is the first ground in Family Code section 1615(a)(1). An agreement is not enforceable if the party against whom it is enforced proves "That party did not execute the agreement voluntarily."

Section 1615(c) gives that rule structure. An agreement "shall be deemed" not executed voluntarily unless the court finds, in writing or on the record, all of the following:

  1. The party was represented by independent legal counsel when signing, or, after being advised to seek independent counsel, expressly waived it in a separate writing. That advisement has to come at least seven calendar days before the final agreement is signed.
  2. For agreements signed on or after January 1, 2020, the party had at least seven calendar days between first being presented with the final agreement and signing it, whether or not the party had a lawyer. (Agreements signed between January 1, 2002, and January 1, 2020, follow a similar seven-day rule tied to presentation and the advisement to seek counsel.) Nonsubstantive amendments that do not change the terms do not restart the clock.
  3. An unrepresented party was fully informed of the agreement's terms and basic effect and the rights being given up, was proficient in the language used, received that explanation in writing before signing, and signed a document saying who provided it.
  4. Nothing was signed under duress, fraud or undue influence, and neither party lacked capacity.
  5. Any other factors the court deems relevant.

The seven days run from presentation of the final agreement to signing. The statute does not measure them from the wedding. Seven days is also a minimum. The fifth factor leaves the court room to weigh the whole setting in which the agreement was signed.

Voluntariness and disclosure often travel together in a challenge. A person who received a full disclosure but had no real time to read it, or who signed under pressure, may raise both grounds at once. For San Diego County couples, signing in the final week or so before a wedding can make every one of these findings harder to support later.

When Incomplete Disclosure Makes a Prenup Unenforceable

The disclosure ground in section 1615(a)(2) has more than one part, and that detail is easy to miss. The agreement is unenforceable on this ground only if it "was unconscionable when it was executed" and, before signing, all of the following applied to the challenging party:

  • "That party was not provided a fair, reasonable, and full disclosure of the property or financial obligations of the other party."
  • That party did not "voluntarily and expressly waive, in writing, any right to disclosure" beyond what was provided.
  • That party "did not have, or reasonably could not have had, an adequate knowledge of the property or financial obligations of the other party."

So thin disclosure is one piece, not the whole test. A written waiver, or the challenging party's own adequate knowledge of the other's finances, can defeat this ground. The terms must also have been unconscionable when signed, which the court decides as a matter of law under section 1615(b).

The burden sits with the challenger. Section 1615(a) applies "if the party against whom enforcement is sought proves" one of the grounds. If a court finds the agreement unenforceable, the terms it was meant to set do not control. Family Code section 1500 says the property rights the statutes give spouses "may be altered by a premarital agreement," so without an enforceable agreement, those statutory rules generally govern instead.

Timing of a challenge has its own rule. Under Family Code section 1617, any statute of limitations for a claim under a premarital agreement is paused during the marriage. Equitable defenses such as laches (unreasonable delay) and estoppel remain available to either party.

The same Family Code applies across San Diego Superior Court's family law divisions. Central, North County, East County and South County all work from these state statutes.

What a Prenup Cannot Do Under California Law

Disclosure helps an agreement hold up, but it does not make every term enforceable. Family Code section 1612(a) lets prospective spouses contract about property "whenever and wherever acquired or located," its management, its disposition at separation, divorce or death, wills and trusts to carry out the agreement, life insurance death benefits, the choice of law, and "any other matter... not in violation of public policy or a statute imposing a criminal penalty."

Some limits are fixed. Section 1612(b) states: "The right of a child to support may not be adversely affected by a premarital agreement." A complete disclosure does not change that.

Spousal support has its own rule in section 1612(c). A provision about spousal support, including a waiver, is not enforceable if the party it is enforced against "was not represented by independent counsel at the time the agreement containing the provision was signed," or if the provision "is unconscionable at the time of enforcement." Having a lawyer does not rescue a provision that is otherwise unenforceable. Section 1612(c) judges unconscionability of a support term at the time of enforcement, while section 1615(a)(2) looks at the time of signing.

Terms that violate public policy or a criminal statute fall outside what section 1612(a) allows.

Disclosure in the Context of a San Diego County Prenup

If a prenup is challenged in a San Diego County divorce, the case is generally heard in the family law division the court's ZIP Code List (ADM-254) assigns to the filing ZIP code. Most family law cases are filed in one of four courthouses of the Superior Court of California, County of San Diego:

  • Central Division: Central Courthouse, 1100 Union Street, San Diego, CA 92101
  • North County Division: North County Regional Center, 325 South Melrose Drive, Vista, CA 92081
  • East County Division: East County Regional Center, 250 East Main Street, El Cajon, CA 92020
  • South County Division: South County Regional Center, 500 3rd Avenue, Chula Vista, CA 91910

The time to build a record that holds up in those courtrooms comes well before the wedding. Gathering account statements, appraisals and debt schedules takes time, and the seven-day periods described above sit on top of that. Couples who start several months before the wedding generally have more room to do each step properly.

Property in other states raises its own questions. This site's guidance covers California law only, and section 1612(a)(6) lets the parties choose which law governs how the agreement is read. Whether another state honors that choice depends on that state's law.

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Frequently asked questions

What is a full financial disclosure in a prenup?

It is an account of each party's property and financial obligations that is fair, reasonable and full, given before signing. That covers assets, income, debts and continuing obligations. Under Family Code section 1615(a)(2), the disclosure has to give the other person a genuine picture of the finances, not just a partial list.

Does California law require asset disclosure in a prenup?

Section 1615 does not make disclosure a stand-alone requirement, but disclosure is one way to protect the agreement: under section 1615(a)(2) it is one piece of a larger test that also looks at unconscionability, any written waiver, and the other party's own knowledge, as explained above. Both parties disclose, not only the wealthier one.

What can void a prenup in California?

Section 1615(a) names two grounds on which a prenup is not enforceable: involuntary signing, and an unconscionable agreement paired with inadequate disclosure under the multi-part test described in the section on incomplete disclosure. Under section 1615(c), signing is deemed involuntary unless the court finds the listed conditions.

Does a prenup need to be notarized in California?

Family Code section 1611 requires a premarital agreement to be in writing and signed by both parties, and says it is enforceable without consideration. That section does not list notarization as a requirement.

Can a prenup waive spousal support in California?

A prenup can address spousal support, with conditions. Under section 1612(c), a spousal support provision, including a waiver, is not enforceable if the party it is enforced against lacked independent counsel at signing. It is also unenforceable if the provision is unconscionable at the time of enforcement.

How far in advance should a prenup be signed in California?

Section 1615(c) sets seven-calendar-day minimums tied to signing, not to the wedding date: the advisement to seek independent counsel must come at least seven calendar days before the final agreement is signed, and for agreements signed on or after January 1, 2020, the party must have the final agreement for at least seven calendar days before signing, as covered in the voluntariness section above.

What financial obligations must be disclosed in a California prenup?

The statute uses the phrase "financial obligations" and does not list them. In practice, disclosure schedules commonly cover mortgages, student loans, credit card balances, tax liabilities, and support owed from a prior relationship. The test is whether the disclosure was fair, reasonable and full.

Attorney Contributor: Amy J. Lass | California Bar No. 246779

Amy J. Lass contributes legal expertise and reviews selected legal content for accuracy. General information only — not legal advice.