Can I Get Out of a Prenup I Already Signed in Florida? (Fla. Stat. § 61.079(7))

By Nadia Pazos, Family Law Attorney, Pazos Law Group · Updated August 7, 2026

Fla. Stat. § 61.079(7)(a) is the only door out of a signed Florida prenuptial agreement, and the person who signed it has to walk through it carrying the burden of proof. This page explains the three statutory grounds, what each one actually requires, and how strong or weak a challenge usually is.

What Is the Starting Point Under Fla. Stat. § 61.079?

Florida's premarital agreement law is codified at Fla. Stat. § 61.079, titled “Premarital agreements.” Subsection (1) states that the section “may be cited as the ‘Uniform Premarital Agreement Act’” and that it “applies only to proceedings under the Florida Family Law Rules of Procedure.”

The formalities are minimal, which is the first thing worth understanding if you are hoping the document is defective on its face. Section 61.079(3) provides: “A premarital agreement must be in writing and signed by both parties. It is enforceable without consideration other than the marriage itself.” There is no notarization requirement in the statute, no witness requirement, no waiting period, and no requirement that either party have a lawyer. Under § 61.079(5), the agreement “becomes effective upon marriage of the parties.”

So a signed, written prenup that you both executed before the wedding is presumptively enforceable. The question is not whether the document is technically perfect. The question is whether you can prove one of the grounds in § 61.079(7)(a).

What Does § 61.079(7)(a) Require You to Prove?

Section 61.079(7)(a) opens with the allocation of the burden, and it is worth reading slowly: a premarital agreement “is not enforceable in an action proceeding under the Florida Family Law Rules of Procedure if the party against whom enforcement is sought proves that” one of three things is true.

Two features of that sentence control everything else on this page. First, the person resisting the agreement carries the burden — your spouse does not have to prove the prenup is fair. Second, the grounds are a closed list. “It isn't fair,” “I didn't read it,” and “I've changed my mind” are not on it.

Ground 1: Did You “Not Execute the Agreement Voluntarily”? (§ 61.079(7)(a)1.)

The first ground is stated in seven words: “The party did not execute the agreement voluntarily.” Fla. Stat. § 61.079(7)(a)1.

Voluntariness is a factual question decided on the whole record. The circumstances a Florida court typically hears evidence about include:

• When you first saw the document relative to the ceremony, and how much of that time you actually had to review it.
• Whether you were represented by your own attorney, consulted one, or declined one after being told you could.
• What you were told would happen if you did not sign — and whether the wedding, guests, and travel had already been paid for.
• Language and comprehension — whether the agreement was in a language you read, and whether a translation or interpreter was provided.
• Whether you negotiated any changes, asked questions, or proposed edits that were incorporated.

Note what the statute does not say. It does not say a prenup signed close to the wedding is involuntary. It does not say an unrepresented signature is involuntary. Those facts are evidence pointing toward or away from voluntariness; they are not shortcuts.

Ground 2: Was It “the Product of Fraud, Duress, Coercion, or Overreaching”? (§ 61.079(7)(a)2.)

The second ground, in full: “The agreement was the product of fraud, duress, coercion, or overreaching.” Fla. Stat. § 61.079(7)(a)2.

These are four separate concepts, and it helps to keep them separate:

• Fraud — a knowing misrepresentation or concealment of a material fact that induced the signature. In prenup cases this most often concerns assets, debts, income, or a business interest that was hidden or materially misstated.
• Duress — a wrongful threat that overcame free will, leaving no reasonable alternative but to sign.
• Coercion — pressure of a kind and degree that displaced the signer's own judgment.
• Overreaching — the exploitation of a position of dominance or superior knowledge to obtain terms the other party did not meaningfully assent to.

The phrase “the product of” matters: there must be a causal link between the conduct and the execution of this agreement. Unpleasant conversations in the run-up to a wedding are not, standing alone, duress.

Ground 3: Was It Unconscionable And Were All Three Disclosure Conditions Met? (§ 61.079(7)(a)3.)

This is the ground most often misdescribed online, so here is the statutory text in full. Under Fla. Stat. § 61.079(7)(a)3., the agreement is unenforceable if it “was unconscionable when it was executed and, before execution of the agreement, that party”:

1. § 61.079(7)(a)3.a. — “Was not provided a fair and reasonable disclosure of the property or financial obligations of the other party”;
2. § 61.079(7)(a)3.b. — “Did not voluntarily and expressly waive, in writing, any right to disclosure of the property or financial obligations of the other party beyond the disclosure provided”; and
3. § 61.079(7)(a)3.c. — “Did not have, or reasonably could not have had, an adequate knowledge of the property or financial obligations of the other party.”

This ground is conjunctive. The statute joins subparagraphs a., b. and c. with “and,” and it attaches all three to the separate requirement that the agreement was unconscionable when executed. In practice that means a challenger must establish four things, not one:

1. the agreement was unconscionable at the time it was executed (not merely lopsided in hindsight);
2. no fair and reasonable disclosure was provided;
3. no voluntary, express, written waiver of further disclosure was signed; and
4. the challenger neither had nor reasonably could have had adequate knowledge of the other party's property or financial obligations.

Each of those is an independent way for the challenge to fail. If the prenup contains a schedule of assets, or a written waiver-of-disclosure clause you initialed, or if you knew about the business and the accounts from years of living together, ground 3 usually closes.

Who Decides Unconscionability — a Judge or a Jury? (§ 61.079(7)(c))

The judge, and only the judge. Fla. Stat. § 61.079(7)(c) provides: “An issue of unconscionability of a premarital agreement shall be decided by the court as a matter of law.”

Two practical consequences follow. First, there is no jury to appeal to on sympathy; a Florida dissolution filed under Fla. Stat. § 61.052 is tried to the court regardless. Second, because unconscionability is decided as a matter of law, it is reviewed on appeal differently from the underlying factual findings about disclosure, duress and voluntariness, which remain the trial judge's to make.

What If the Prenup Leaves You With Nothing to Live On? (§ 61.079(7)(b))

Florida has one narrow statutory override of a support waiver. Section 61.079(7)(b) provides that if a provision “modifies or eliminates spousal support and that modification or elimination causes one party to the agreement to be eligible for support under a program of public assistance at the time of separation or marital dissolution, a court, notwithstanding the terms of the agreement, may require the other party to provide support to the extent necessary to avoid that eligibility.”

Read the limits carefully, because they are strict:

• The trigger is eligibility for public assistance, not hardship, not a drop in lifestyle, and not disparity between the spouses.
• The remedy is support “to the extent necessary to avoid that eligibility” — a floor, not the alimony award that Fla. Stat. § 61.08 would have produced without the waiver.
• The statute says “may,” not “shall.”

Section 61.079(4)(a)4. is what makes the waiver possible in the first place: parties may contract with respect to “the establishment, modification, waiver, or elimination of spousal support.” Subsection (7)(b) is the boundary on that power.

Can a Prenup Waive Child Support or Decide Custody? (§ 61.079(4)(b))

No, and this is one of the clearest rules in the statute. Fla. Stat. § 61.079(4)(b): “The right of a child to support may not be adversely affected by a premarital agreement.”

That single sentence means a support-waiver clause does not bind the court no matter how the agreement was executed and no matter how thorough the disclosure was. Child support is calculated under the guidelines schedule in Fla. Stat. § 61.30. Parental responsibility and time-sharing are decided under Fla. Stat. § 61.13, which since July 1, 2023 has included a rebuttable presumption of equal time-sharing in § 61.13(2)(c)1. Nothing signed before the marriage displaces either analysis.

If children are the reason you are reading this page, that is a decisive point: you do not need to set the prenup aside to litigate support or time-sharing.

Is There a Deadline to Challenge a Prenup You Signed? (§ 61.079(9))

Section 61.079(9) is titled “LIMITATION OF ACTIONS” and provides: “Any statute of limitations applicable to an action asserting a claim for relief under a premarital agreement is tolled during the marriage of the parties to the agreement. However, equitable defenses limiting the time for enforcement, including laches and estoppel, are available to either party.”

The tolling rule is genuinely favorable to a signer — the clock does not run against you while the marriage continues. The second sentence is the caution. Laches and estoppel remain available, so years of accepting the benefits of the agreement, or of asserting it yourself, can still undercut a later challenge. Prompt legal advice is worth more than a tolling rule.

Can You Undo a Prenup by Agreement Instead of Litigating? (§ 61.079(6))

Yes, and it is by far the cheapest route when both spouses agree. Fla. Stat. § 61.079(6), “AMENDMENT; REVOCATION OR ABANDONMENT,” provides: “After marriage, a premarital agreement may be amended, revoked, or abandoned only by a written agreement signed by the parties. The amended agreement, revocation, or abandonment is enforceable without consideration.”

The operative word is “only.” A conversation, a text message thread, commingling of accounts, or years of ignoring the agreement do not revoke it. If your spouse is willing to tear it up, that has to happen in a signed writing. The same subsection allows amendment, which is often the realistic middle ground: keep the parts that still make sense, replace the parts that do not.

Does It Matter That You Did Not Have Your Own Lawyer?

It matters as evidence. It is not a ground.

Nothing in Fla. Stat. § 61.079 requires that either party be represented by independent counsel. The formalities in § 61.079(3) are a writing and two signatures. So the honest answer — and several competing pages get this wrong — is that signing a Florida prenup without a lawyer does not, by itself, make it invalid.

What independent counsel does is evidentiary, and it cuts both ways:

• Representation on both sides is strong evidence that execution was voluntary under § 61.079(7)(a)1. and that the agreement was not the product of overreaching under § 61.079(7)(a)2.
• An unrepresented signer who was given the document hours before the ceremony, with no opportunity to consult anyone, has a materially better voluntariness record than one who was offered counsel weeks in advance and declined in writing.
• A written waiver of disclosure under § 61.079(7)(a)3.b. carries more weight when a lawyer explained what was being waived.

Does § 61.079 Even Apply? Prenup vs. Postnuptial Agreement — Casto v. Casto (Fla. 1987)

Check the date on your signature page before anything else, because the governing law is different.

Fla. Stat. § 61.079(2)(a) defines the term: “‘Premarital agreement’ means an agreement between prospective spouses made in contemplation of marriage and to be effective upon marriage.” Section 61.079(5) adds that it “becomes effective upon marriage of the parties.” If you signed before the wedding, § 61.079 governs.

If you signed after the wedding, you have a postnuptial or marital agreement, and § 61.079 does not apply to it. Those agreements are governed by Florida case law — principally Casto v. Casto, 508 So. 2d 330 (Fla. 1987), in which the Florida Supreme Court recognized that a spouse may set aside or modify a marital agreement by establishing that it was reached through fraud, deceit, duress, coercion, misrepresentation, or overreaching. Note what is absent from that formulation: the statutory unconscionability-plus-disclosure structure of § 61.079(7)(a)3. is a creature of the statute, not of Casto.

Getting this distinction right early changes the pleadings, the proof, and the expert work. Blurring the two is a common error in general-purpose articles about Florida prenups.

What If the Marriage Itself Was Void? (§ 61.079(8))

Section 61.079(8) addresses the unusual case: “If a marriage is determined to be void, an agreement that would otherwise have been a premarital agreement is enforceable only to the extent necessary to avoid an inequitable result.” This is the one place in the statute where a court has open-ended equitable discretion over the agreement's reach. It comes up alongside a petition for annulment rather than a dissolution under Fla. Stat. § 61.052.

What Happens If a Florida Court Sets the Prenup Aside?

The agreement stops controlling, and the default statutory scheme takes over. That means:

• Property. Fla. Stat. § 61.075 governs equitable distribution, beginning from the premise in § 61.075(1) that the distribution should be equal unless there is a justification for an unequal distribution based on the statutory factors. Section 61.075(6)(b) defines nonmarital assets and liabilities — which typically include assets owned before the marriage and gifts and inheritances received by one spouse.
• Enhancement of separate property. Fla. Stat. § 61.075(6)(a)1.b. treats as marital the enhancement in value and appreciation of nonmarital assets resulting from the efforts of either party during the marriage or from the contribution of marital funds. On passive appreciation of nonmarital real property encumbered by a marital mortgage, see Kaaa v. Kaaa, 58 So. 3d 867 (Fla. 2010).
• Support. Alimony is decided under Fla. Stat. § 61.08 as amended in 2023, which eliminated permanent alimony and set out the forms and durational limits now available.
• Fees. Fla. Stat. § 61.16 allows a court, after considering the financial resources of both parties, to order one party to pay a reasonable amount toward the other's attorney's fees, suit money and costs. See Rosen v. Rosen, 696 So. 2d 697 (Fla. 1997).

A partial outcome is also possible: a court may decline to enforce a particular provision without discarding the entire agreement, depending on how the document is drafted.

How Strong Is a Typical Challenge? An Honest Assessment

Most signed Florida prenuptial agreements are enforced. That is the realistic baseline, and any page that tells you otherwise is selling something.

Challenges tend to be weaker where the record shows: both parties represented by counsel; a signature date well before the ceremony; attached financial schedules; an initialed disclosure-waiver clause consistent with § 61.079(7)(a)3.b.; and years of both spouses treating the agreement as operative.

Challenges tend to be stronger where the record shows: a materially inaccurate or absent financial disclosure; assets or income concealed before execution; presentation of the document in circumstances that left no genuine choice; no written waiver of disclosure anywhere in the file; a signer who could not read the language of the agreement; or an agreement that was already unconscionable on the day it was signed.

Even a strong record is a factual case that has to be proven, and § 61.079(7)(a) puts that burden on you. What is usually worth doing first is an unhurried review of the executed document, its schedules, and the surrounding correspondence — before deciding whether a challenge, a negotiated amendment under § 61.079(6), or simply proceeding under the agreement is the better path.

What Should You Gather Before Talking to a Lawyer?

1. The fully executed agreement, including every exhibit, schedule and initialed page.
2. The date you first received a draft, and every draft you still have.
3. All correspondence about the agreement — email, text, messages from either lawyer.
4. Any financial disclosure attached to or referenced by the agreement.
5. The wedding date and, if relevant, when invitations went out and deposits were paid.
6. Whether you were offered or declined counsel, and any writing reflecting that.
7. Any later writing signed by both of you that amended, revoked or abandoned the agreement under § 61.079(6).

Florida residency for a dissolution is governed by Fla. Stat. § 61.021, which requires that one of the parties reside 6 months in the state before filing, and § 61.19 provides that no final judgment of dissolution may be entered until at least 20 days after the date of filing, absent an injustice finding. Those timelines shape when a prenup challenge is actually litigated.

Frequently Asked Questions

Official Sources & Related Reading

• Fla. Stat. § 61.079, Premarital agreements — official text (Online Sunshine)
• Fla. Stat. § 61.075, Equitable distribution of marital assets and liabilities — official text
• Florida Family Law Forms — flcourts.gov
• What Makes a Prenup Invalid in Florida? — the grounds in detail
• Fla. Stat. § 61.079 — Florida Premarital Agreement Law
• Florida Prenup FAQ
• Is a Prenup Enforceable in Florida?
• Florida Prenuptial Agreement Attorney
• Fla. Stat. § 61.16 — Attorney's Fees in Florida Family Cases

The information on this page is for general informational purposes only and does not constitute legal advice. Reading or sharing this content does not create an attorney-client relationship with Pazos Law Group. Florida law and the application of statutes change over time; please consult a licensed Florida attorney about your specific situation.