A lot of people look at prenuptial agreements and postnuptial agreements and think:
“How hard can this really be?”
Then they download an online template, use an AI-generated form, or try to piece something together themselves because it seems “simple.”
Honestly, this is where people create major problems for themselves.
California marital agreements are not just basic contracts. They are heavily scrutinized legal documents with very specific requirements.
And when a prenup or postnup is poorly drafted, vague, rushed, or missing important protections, the agreement people thought would prevent litigation often becomes the center of litigation.
At Finan Family Law, APC, I regularly see situations where people believed they had a valid agreement — only to later discover it may not actually provide the protection they thought it did.
That can become extremely expensive very quickly.
What Is the Difference Between a Prenup and a Postnup?
A prenuptial agreement is signed before marriage. A postnuptial agreement is signed after marriage.
Both can address:
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separate property
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business ownership
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spousal support
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retirement assets
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inheritance rights
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future appreciation
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debt allocation
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financial expectations
But both agreements must meet California legal requirements to have a strong chance of being enforceable later.
California Has Strict Requirements for Marital Agreements
One of the biggest misconceptions people have is assuming that if both parties sign the agreement, it is automatically enforceable.
That is not necessarily true.
California courts look carefully at issues involving:
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financial disclosure
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timing
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voluntariness
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independent legal counsel
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unconscionability
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fairness concerns
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understanding of the agreement
If these issues are handled poorly, the agreement can become vulnerable to attack later.
Online Forms Usually Miss Important Issues
Generic online forms are rarely tailored to real-life financial situations.
Most people using DIY agreements are not thinking about:
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business growth
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RSUs and stock options
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future appreciation
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tracing issues
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retirement accounts
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separate versus community property characterization
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inheritance complications
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tax consequences
And those are often the exact issues that create expensive litigation later.
A simple form cannot anticipate every financial situation or every future dispute.
Timing Mistakes Create Problems
California has strict rules regarding timing for prenuptial agreements.
One of the biggest issues I see is people waiting until the last minute.
That creates arguments later involving:
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pressure
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coercion
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lack of time for review
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inadequate opportunity to consult counsel
A rushed agreement is much more vulnerable to attack.
And honestly, if someone is serious about protecting assets, waiting until days before the wedding usually is not a great strategy.
Postnuptial Agreements Face Even More Scrutiny
A lot of people do not realize postnuptial agreements are often scrutinized even more heavily than prenups.
Why?
Because once people are already married, fiduciary duties between spouses become extremely important.
California courts may look carefully at:
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fairness
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disclosure
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power imbalances
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undue influence
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whether one spouse truly understood the agreement
This is one reason postnups should never be treated like simple paperwork.
Vague Language Creates Litigation
One of the biggest problems with DIY agreements is vague drafting.
People use broad language like:
“All future income remains separate property.”
But what does that actually mean?
Does it include:
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stock options?
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business appreciation?
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bonuses?
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deferred compensation?
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retirement growth?
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rental property income?
Ambiguity creates litigation.
And once litigation starts, fixing a poorly drafted agreement can cost far more than properly preparing it from the beginning.
Social Media and AI Are Making This Worse
There is a growing trend of people relying on TikTok legal advice, AI-generated forms, or influencer content for serious marital agreements.
That is risky.
Family law is extremely fact-specific.
A strategy that works for one person may be completely inappropriate for someone else — especially in California high-asset cases.
There is no one-size-fits-all prenup or postnup.
A Good Agreement Should Reduce Conflict
A properly drafted marital agreement should create clarity, not confusion.
Ideally, a prenup or postnup helps:
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define expectations
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protect separate property
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reduce future disputes
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address financial concerns proactively
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create transparency
The goal is not to create fear or punish someone.
The goal is to reduce uncertainty before conflict develops.
Speak With a California Prenuptial and Postnuptial Agreement Attorney
If you are considering a prenuptial agreement or postnuptial agreement in California, it is important to understand your rights and obligations before signing anything.
At Finan Family Law, APC, we help clients throughout Torrance, the South Bay, and Los Angeles County prepare sophisticated marital agreements tailored to their financial circumstances and long-term goals.
Finan Family Law, APC
California Prenuptial & Postnuptial Agreement Attorney
Torrance, California
Schedule a confidential consultation to discuss your situation.