Key Takeaways:
- Florida will enforce a valid prenup or postnup, but “valid” is doing a lot of work in that sentence. Agreements get thrown out for reasons people don’t expect: inadequate financial disclosure, signing under pressure, or improper execution.
- Postnuptial agreements face more judicial scrutiny than prenups because courts recognize that marriage itself can create pressure and power dynamics that didn’t exist before.
- Business owners, people entering second marriages, and anyone with significant separate assets have the most to gain from a well-drafted marital agreement, and the most to lose if that agreement fails.
Here’s the honest truth about prenuptial agreements: most people either don’t have one, or they have one that was thrown together quickly and may not actually hold up. And in a high-asset divorce, the difference between an enforceable agreement and a worthless piece of paper can be enormous.
People sign prenups for good reasons: to protect a business, to keep an inheritance separate, to set expectations clearly before combining financial lives. The assumption behind every prenup is that if the marriage ends, this document governs. That assumption doesn’t always hold.
Florida courts will enforce a valid prenuptial agreement, but they will also throw one out. And when that happens mid-divorce, the fallout is significant.
Understanding what makes these agreements enforceable, and what makes them vulnerable, matters as much as having one in the first place.
What Florida Law Actually Says About Prenuptial Agreements
Florida’s Premarital Agreement Act governs prenups in the state. A prenup is a contract signed before marriage that takes effect when you get married. It can cover a lot of ground: how property gets divided if things don’t work out, whether alimony will be paid or waived, how debts are handled, and what happens to assets acquired during the marriage.
What a prenup cannot do is predetermine child custody or child support. Courts keep jurisdiction over those issues regardless of what any agreement says, because they’re governed by the best interests of the child, not what two people decided before they had kids.
For a prenup to be enforceable under Florida’s Premarital Agreement Act, it must be in writing, signed voluntarily by both parties, and supported by fair financial disclosure. The burden falls on the person challenging the agreement to prove it shouldn’t hold, but that burden gets met more often than people expect.
Why Florida Courts Throw Out Prenups
Even a carefully drafted prenup can fail. The most common challenges come down to a few situations:
- It wasn’t truly voluntary – If one party signed under pressure or didn’t have a real opportunity to review the agreement, a court may find it wasn’t entered into voluntarily. Presenting a prenup a few days before the wedding, without time to get independent legal advice, is a classic fact pattern that raises serious voluntariness concerns. Don’t do this to your future spouse. It doesn’t hold up.
- Financial disclosure was incomplete – Both parties need to make a fair and reasonable disclosure of their finances before signing. If one party hid assets or significantly understated what they owned, the agreement may be unenforceable. In high-net-worth situations where one party’s finances are complex, this is a real and common issue.
- The terms were unconscionable – Courts can refuse to enforce an agreement, or specific provisions within it, if they were unconscionable at the time of signing. This is a high bar, as courts generally enforce agreements even when they seem one-sided, but extreme terms can still get thrown out.
- It wasn’t executed correctly – Florida requires the agreement to be signed by both parties. If the process was sloppy or the document was altered after signing, you’ve got a problem.
Postnuptial Agreements: Same Goal, Higher Bar
A postnuptial agreement is signed after the marriage has already taken place, and Florida courts apply more scrutiny to them than to prenups. The reason is straightforward: the dynamics of a marriage can create pressures and power imbalances that simply didn’t exist when both parties were independent adults negotiating before they said “I do.”
For a postnup to have the best chance of holding up, both parties should have separate attorneys, the agreement should be signed outside of any marital crisis, financial disclosure should be thorough and well-documented, and the terms shouldn’t be so one-sided that they invite a challenge. Agreements where both sides had independent legal counsel are far more likely to survive a challenge than those where one attorney handled everything.
Who Actually Benefits from a Marital Agreement
Prenups and postnups aren’t just for the ultra-wealthy, though they absolutely make sense in high-net-worth situations. They’re useful for anyone who has something meaningful to protect or specific financial intentions to formalize.
Business owners benefit enormously from a well-drafted marital agreement. Without one, a business started before or during the marriage may be subject to valuation and division, which can create real chaos for employees, clients, and partners who have nothing to do with your divorce. Jamie’s background in business law means she understands exactly what’s at risk and how to draft an agreement that actually protects it.
People entering a second or third marriage often use prenups to protect children from a prior relationship. A marital agreement can formalize which assets are earmarked for those kids versus which go into the new marriage.
Anyone with significant separate property, like an inheritance, a trust, or assets built before the relationship, benefits from having the distinction on paper before things get complicated.
What Makes a Florida Marital Agreement Actually Hold Up
The agreements that survive challenges have a few things in common. Both parties had real time to review the document. Both had access to independent legal counsel. Financial disclosure was thorough. The signing wasn’t rushed or pressured. And the terms, even if favorable to one party, weren’t so extreme they invited a fairness challenge.
Getting this right takes both technical precision and a clear understanding of how Florida courts actually evaluate these agreements. A document that looks solid on paper can still fall apart if the execution process is flawed.
Whether you’re considering a prenup before marriage, a postnup within one, or you’re heading into a divorce where an existing agreement is being challenged, Brava Law can help you figure out exactly where you stand. Schedule your consultation with our team today.
