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Can You Change or Revoke a Prenuptial or Postnuptial Agreement in California?

Posted by Mark Ruiz | Oct 04, 2026 | 0 Comments

Many people believe that once a prenuptial or postnuptial agreement is signed, it can never be changed. In reality, life circumstances often change after an agreement is created. Couples may acquire additional assets, start a business, have children, or simply decide that certain provisions no longer reflect their wishes.

In California, it is possible to modify or revoke a prenuptial or postnuptial agreement under the right circumstances. Understanding how these changes work can help ensure that your legal documents continue to meet your family's needs.

CAN A PRENUP OR POSTNUP BE CHANGED?

Yes. In many cases, spouses may agree to modify or revoke an existing marital agreement.

Both parties must generally agree to the changes, and any modification should comply with California's legal requirements. Simply making verbal promises or informal understandings is usually not enough to change the terms of a written agreement.

WHEN SHOULD YOU CONSIDER AN UPDATE?

There are many situations where reviewing your marital agreement may be appropriate. Some common examples include:

  • The birth or adoption of children
  • Starting or selling a business
  • Receiving an inheritance
  • Purchasing significant real estate
  • A substantial increase in assets
  • Changes in your estate planning goals

As your financial situation evolves, your marital agreement should continue to reflect your current intentions.

HOW DOES THIS AFFECT YOUR ESTATE PLAN?

A prenuptial or postnuptial agreement often works together with your estate planning documents.

If you update your marital agreement, it may also be necessary to review your living trust, will, beneficiary designations, and other estate planning documents. Keeping these documents consistent can help avoid confusion and reduce the likelihood of disputes after your death.

DON'T ASSUME YOUR OLD AGREEMENT STILL FITS

Many couples sign a prenup before marriage and never look at it again. Years later, their financial circumstances may be completely different from what they anticipated.

Periodic reviews can help determine whether the agreement still serves its intended purpose and whether updates should be considered as part of your overall financial and estate planning.

WORK WITH EXPERIENCED PROFESSIONALS

Modifying or revoking a marital agreement involves important legal considerations. Because these agreements can affect property rights, inheritance, and estate planning, changes should be handled carefully.

Working with an experienced California estate planning attorney can help ensure that any revisions comply with applicable law and coordinate with the rest of your estate plan.

FINAL THOUGHTS

A prenuptial or postnuptial agreement should not necessarily remain unchanged forever. As your family, assets, and goals evolve, reviewing these agreements can help ensure they continue to reflect your wishes and support your overall estate planning objectives.

If it has been several years since you reviewed your prenuptial or postnuptial agreement, or if your financial circumstances have changed significantly, now may be a good time to consult with an experienced California estate planning attorney to determine whether updates are appropriate.

LEGAL DISCLAIMER

This article is intended for general informational purposes only. Any legal analysis or other content should not be construed as legal or professional advice or as a substitute for such advice. No attorney-client or confidential relationship is formed by the transmission of this information. If you require legal or professional advice, please contact an attorney or other suitable professional advisor. The choice of an attorney or other professional is an important decision and should not be based solely upon advertisements and blog postings.

About the Author

Mark Ruiz

Mark A. Ruiz Attorney/Owner Mark  primarily focuses on Business Law, Real Estate Law and Estate Planning.  He holds a Bachelors Degree from Santa Clara University with an emphasis in Business/Marketing and a Law Degree from the University of San Francisco with a Business Law Certificate.  He ...

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