Family Law

What a Florida prenuptial agreement actually protects

A Florida prenup does more than protect premarital assets. Here's what you can and cannot agree to, and what makes a prenup hold up in court.

3 min read Last reviewed April 15, 2026 by Gwen Walkowiak

A Florida prenuptial agreement is less about distrust and more about clarity. It is a written contract entered into before marriage that specifies what will happen to property, debts, income, and support obligations if the marriage ends, whether by divorce or by death. Done well, it removes ambiguity from a relationship and spares the family from litigation that would otherwise be inevitable.

What a Florida prenup can cover

The Uniform Premarital Agreement Act, adopted in Florida as sections 61.079 of the Florida Statutes, allows parties to contract about a wide range of subjects, including:

  • Rights and obligations in property, regardless of where the property is located
  • Management, control, and disposition of property during the marriage
  • Property division on separation, divorce, or death
  • Alimony / spousal support. Modification, waiver, or specification.
  • Ownership and control of life insurance benefits
  • Choice of governing law for interpretation of the agreement
  • Any other matter not in violation of public policy or criminal law

The scope is broad. Most of the legal work is in the drafting. The language has to do what the parties actually intend without running afoul of the public policy limits.

What a Florida prenup cannot cover

Florida law carves out specific topics that cannot be pre-decided by contract:

  • Child custody, time-sharing, or parental responsibility. These are always governed by the best interests of the child at the time of any dispute.
  • Child support. A parent cannot contract away the child’s right to support.
  • Provisions that would violate public policy or criminal law. An agreement cannot contain illegal terms.

Attempts to cover these topics in a prenup are unenforceable. The rest of the agreement may still stand if it is severable.

What makes a prenup hold up in court

The most commonly-challenged provision in a Florida prenup is the alimony waiver. Florida courts look carefully at:

Voluntariness. Was the agreement signed under duress or coercion? Signing the night before the wedding, under pressure from one side, or without time to consult independent counsel are all factors that weigh toward duress.

Disclosure. Did both parties have a fair and reasonable disclosure of each other’s property, income, and financial obligations? Hiding assets at the time of signing, even unintentionally, can invalidate the agreement later.

Independent counsel. Did each party have the opportunity to be represented by independent counsel? Florida does not require separate attorneys for validity, but the lack of independent representation makes it easier to challenge voluntariness later.

Unconscionability. Was the agreement unconscionable when it was signed, or does enforcement at the time of divorce produce an unconscionable result? An agreement that leaves one spouse destitute after a decades-long marriage is more vulnerable than one that simply preserves premarital wealth.

The timing rule almost nobody follows

The single most common mistake in Florida prenups is timing. An agreement signed three days before the wedding, while invitations have been mailed and the venue paid for, is a duress problem waiting to happen. Florida courts are openly skeptical of prenups signed in the final 30 days before the ceremony.

The right timeline is:

  1. Discussion of the concept several months before the wedding
  2. Initial drafting by one party’s attorney
  3. Review by the other party’s attorney with time for changes
  4. Financial disclosure exchanged in writing
  5. Final signing at least 30 days before the ceremony, ideally more

A prenup done on this timeline, with both parties represented and disclosure documented, is the most defensible kind of Florida prenuptial agreement.

When a prenup fits

Prenups are most useful when:

  • One or both parties have significant premarital assets
  • Either party has children from a prior relationship
  • A business owned before marriage needs to stay separate
  • One party is giving up a career or income to support the marriage
  • Either party has substantial premarital debt
  • A second marriage follows a contentious first divorce

They are less useful, and often unnecessary, when both parties are starting with minimal assets and expect a traditional joint financial life. The right answer depends on the specific facts.

If a prenup fits your situation, the first conversation is the cheapest step. Call us at 813-962-3176 to discuss what a Florida prenuptial agreement could look like for you.

Frequently asked

Common questions about this topic

Can a Florida prenup waive alimony?

Yes. Florida recognizes alimony waivers in prenuptial agreements, subject to specific validity requirements under Florida Statutes Chapter 61 and the Uniform Premarital Agreement Act. The waiver must be voluntary, supported by adequate financial disclosure, and not unconscionable at the time of enforcement. These requirements matter. An unsupported alimony waiver is the most commonly-challenged provision in Florida prenups.

Can a prenup decide custody or child support?

No. Florida does not permit parties to pre-decide issues of child custody, time-sharing, or child support in a prenuptial agreement. Those issues are always governed by the best interests of the child at the time of any dispute and cannot be contracted away.

What makes a Florida prenup invalid?

Common grounds for invalidating a Florida prenup include fraud, duress, coercion, lack of voluntariness, inadequate financial disclosure, unconscionability, or failure to have it signed before the marriage. Signing a prenup the night before the wedding is a classic 'duress' problem. Florida courts look closely at the timing and circumstances of signing.

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