Florida Family Law Guide on Setting Aside
Marital Settlement Agreements and Family Law Final Judgments
Setting Aside a Marital Settlement Agreement or Family Law Final Judgment in Florida
Last reviewed: September 5, 2026
A marital settlement agreement can resolve property division, alimony, child support, parenting issues, attorney’s fees, taxes, businesses, retirement accounts, and nearly every other disputed issue in a Florida divorce. Once signed—and especially once incorporated into a final judgment—it is difficult to undo.
That finality is intentional. Florida courts encourage settlements and ordinarily enforce them as contracts. Courts also protect the finality of judgments. But finality has limits. An agreement or judgment may be vulnerable when it resulted from fraud, a material misrepresentation, duress, coercion, overreaching, excusable mistake, newly discovered evidence, a fraudulent financial affidavit, or a fundamental denial of jurisdiction or due process.
The decisive questions are rarely as simple as whether the agreement was “fair.” The court will examine when the agreement was signed, whether litigation and discovery had begun, whether a final judgment was entered, exactly what was said or concealed, what the challenging spouse knew, whether that spouse relied on the challenged information, whether the problem materially affected the result, and whether the correct motion was filed before the applicable deadline.
For information about negotiating, drafting, and enforcing an agreement in the first instance, see our discussion of Florida marital settlement agreements. This guide addresses the different problem that arises when someone seeks to invalidate an agreement or obtain relief from a final judgment.
The Short Answer
Before a final judgment is entered, a spouse may challenge a marital or postnuptial agreement under applicable contract principles and, where the procedural posture permits, the standards established in Casto v. Casto, 508 So. 2d 330 (Fla. 1987).
After the agreement has been ratified or incorporated into a final judgment, the challenge ordinarily must be directed to the judgment under Florida Family Law Rule of Procedure 12.540. Fraud, misrepresentation, misconduct, mistake, newly discovered evidence, a void judgment, or another ground expressly recognized by the rule must be alleged and proved. Unfairness by itself is not a ground listed in Rule 12.540.
The most important deadlines are:
A motion for rehearing or to alter or amend a family-law judgment generally must be served within 15 days.
A notice of appeal from a final judgment generally must be filed within 30 days after rendition.
Rule 12.540 motions based on mistake, newly discovered evidence, fraud, misrepresentation, or misconduct must be filed within a reasonable time and no later than one year after the challenged judgment, order, or proceeding.
There is no time limit under Rule 12.540 for a motion actually based on a fraudulent financial affidavit in a marital or paternity case.
A truly void judgment and a qualifying fraud on the court receive different treatment, but both concepts are substantially narrower than many litigants assume.
Neither an appeal nor a Rule 12.540 motion automatically stays enforcement of the judgment.
What Is a Marital Settlement Agreement?
A marital settlement agreement, often called an MSA, is a contract resolving some or all issues arising from a marriage or dissolution case. It may address:
Classification and division of assets and liabilities;
Valuation and distribution of a business;
Alimony;
Child support and child-related expenses;
Parenting arrangements;
Retirement accounts and qualified domestic relations orders;
The marital home;
Tax filing, dependency claims, and indemnification;
Life insurance;
Attorney’s fees and costs; and
Enforcement, prevailing-party fees, mediation, and dispute resolution.
An agreement signed during Florida family-law mediation generally must be reduced to writing and signed by the parties and their counsel, if any, under Florida Family Law Rule of Procedure 12.740(f).
An MSA does not always have the same procedural status. It may be:
Signed but not yet presented to the court;
Approved but not incorporated into a judgment;
Ratified and incorporated into a final judgment;
Merged into the judgment so that its obligations are enforceable as court-ordered obligations; or
Partially incorporated, with some contractual provisions surviving independently.
Those distinctions affect the available remedy, the court’s jurisdiction, enforcement options, and the governing legal standard.
Is There a Difference Between Vacating and Setting Aside?
In ordinary Florida family-law usage, “vacate” and “set aside” are often used interchangeably. Both describe judicial action that removes the legal effect of an agreement, judgment, or order.
The object of the requested relief matters more than the label:
Setting aside or rescinding an agreement attacks the validity of the contract.
Vacating a judgment seeks relief from the court’s final adjudication.
Reforming an agreement asks the court to correct language that does not accurately express the parties’ actual agreement.
Modifying a judgment generally addresses obligations that the law or agreement makes modifiable because of later circumstances.
Clarifying or enforcing a judgment accepts the judgment as valid and asks the court to interpret or compel compliance with it.
Once an MSA has been incorporated into a final judgment, asking only to “set aside the agreement” may miss the controlling procedural problem. Relief must ordinarily be sought from the judgment itself.
A motion’s substance controls over its title. Calling something a “motion to reconsider,” “motion to vacate,” or “petition for equitable relief” will not avoid the deadlines and limitations of the rule that actually governs the requested relief.
Which Legal Standard Applies?
The procedural posture determines the standard. The first task is to identify whether the challenge is directed to an unincorporated contract, an agreement presented before final judgment, or a final judgment that already incorporates the agreement.
Agreements challenged before final judgment
Before entry of a final judgment, the court may determine whether the agreement is enforceable under Florida contract law and the family-law standards developed in Casto.
Under Casto, a qualifying postnuptial agreement may be challenged through either of two routes.
First, the challenging spouse may prove that the agreement resulted from fraud, deceit, duress, coercion, misrepresentation, or overreaching.
Second, the spouse may prove that the agreement made an unfair or unreasonable provision for that spouse, considering the parties’ circumstances. That showing creates a presumption of concealment or lack of knowledge. The spouse seeking enforcement may rebut the presumption by proving either:
Full and frank disclosure of the parties’ income and assets; or
The challenging spouse’s general and approximate knowledge of the character and extent of the marital property and income.
Unfairness is therefore not automatically enough, even under Casto. It initiates a burden-shifting analysis. The defending spouse can still prevail by proving adequate disclosure or knowledge.
The court will consider the entire setting in which the agreement was signed: the parties’ financial knowledge, access to records, education, health, representation, time to review, negotiations, disclosures, threats, bargaining conduct, and understanding of the agreement.
Agreements signed after litigation and discovery
The Florida Supreme Court limited Casto in Macar v. Macar, 803 So. 2d 707, 711–14 (Fla. 2001). When a contested dissolution action has begun and the parties had an opportunity to use discovery before settling, a later postjudgment challenge is governed by the narrow relief-from-judgment rule, not Casto’s unfairness-based presumption.
The distinction reflects a practical change in the parties’ relationship. Spouses negotiating privately before litigation may still be dealing in a relationship of trust. Once they become litigation adversaries with counsel, mandatory disclosure, subpoenas, depositions, and document requests available, the law expects them to investigate before surrendering their claims.
A spouse does not necessarily have to complete every conceivable form of discovery. But deliberately settling while known questions remain unanswered creates a serious reliance and due-diligence problem later.
Agreements incorporated into final judgments
The current postjudgment rule is clearest in Martin v. Sater, 427 So. 3d 76, 81–83 (Fla. 5th DCA 2025) (en banc), and O’Hair v. O’Hair, 396 So. 3d 630, 632–33 (Fla. 6th DCA 2024). Those courts held that when an agreement has been incorporated into a final judgment, obtaining relief from the agreement requires obtaining relief from the judgment under Rule 12.540.
The Fifth District expressly receded from an older decision that had applied Casto to a postjudgment challenge involving a prefiling agreement. It also held that the alleged unfairness or unreasonableness of the agreement, standing alone, is not a ground for postjudgment relief.
The Fifth District certified a question concerning agreements signed immediately before a divorce filing without formal discovery. The Florida Supreme Court declined discretionary review on June 18, 2026. That decision not to exercise jurisdiction did not constitute a merits ruling or statewide adoption of every part of Martin.
The practical rule is nevertheless plain: once a final judgment has been entered, a Florida motion should identify and prove a recognized Rule 12.540 ground. Reliance on Casto alone is procedurally dangerous.
What Are the Grounds for Setting Aside a Final Judgment?
Rule 12.540 contains a limited list of grounds for relief. It is not a second trial, an extension of the appeal period, or a mechanism for correcting an ordinary legal error.
Clerical mistakes
Rule 12.540(a) allows correction of clerical mistakes and errors arising from oversight or omission.
A clerical correction makes the written order accurately reflect what the court actually decided. It cannot be used to make a new substantive decision, redistribute property, add an omitted award, or materially change the parties’ rights after the court has lost jurisdiction.
For example, correcting a transposed account number may be clerical. Changing which spouse receives the account ordinarily is not.
Mistake, inadvertence, surprise, or excusable neglect
Rule 12.540(b)(1) permits relief for mistake, inadvertence, surprise, or excusable neglect.
This ground commonly arises after defaults, calendaring failures, service problems, or other events that prevented a party from fairly presenting a position. The movant generally must explain the neglect, demonstrate that it was excusable rather than willful or grossly careless, act diligently after learning of the judgment, and present a potentially meritorious claim or defense.
The rule does not ordinarily permit a court to correct its own substantive legal error after the rehearing and appeal periods have expired. Nor does it usually excuse a deliberate settlement decision simply because the party misunderstood its economic consequences.
Newly discovered evidence
Rule 12.540(b)(2) applies to evidence that, through due diligence, could not have been discovered in time to seek rehearing or a new trial.
The evidence must be genuinely new, material, and likely to affect the result. Evidence is not “newly discovered” merely because a party did not request it, did not review available records, or later hired an expert who interpreted existing information differently.
The due-diligence requirement often becomes the central issue. Counsel should be prepared to show:
What information was requested before judgment;
What responses were received;
What follow-up efforts were made;
Why the evidence could not reasonably have been discovered earlier; and
How the evidence would have changed the adjudication or settlement.
Fraud, misrepresentation, or misconduct by an adverse party
Rule 12.540(b)(3) covers fraud—whether intrinsic or extrinsic—misrepresentation, and other misconduct by an adverse party.
A fraud theory ordinarily requires proof of:
A false statement or concealment concerning a material fact;
Knowledge that the representation was false, or intentional concealment when disclosure was required;
An intention to induce the other spouse to act;
Actual reliance; and
Resulting injury or a material effect on the judgment.
These elements are consistent with Butler v. Yusem, 44 So. 3d 102, 105 (Fla. 2010). Florida does not impose a free-standing “justifiable reliance” element in the same manner as some jurisdictions. But a person cannot actually rely on a statement known to be false, and obvious falsity or admitted distrust may defeat the claim.
In a settlement case, causation must be concrete. It is not enough to establish that a financial affidavit contained an error. The movant should be able to explain why the error mattered, what term it affected, what the true fact was, and what the movant would have done differently with accurate information.
Fraudulent financial affidavits
Rule 12.540 creates an important family-law exception: there is no time limit for motions based on fraudulent financial affidavits in marital or paternity cases.
The exception is powerful but narrow. It applies when the motion is actually based on fraud in a financial affidavit. It does not remove the deadline for every allegation of hidden assets, false discovery responses, misleading mediation statements, or incomplete document production.
In Mason v. Mason, 358 So. 3d 1287, 1290–91 (Fla. 1st DCA 2023), the First District applied the rule’s unqualified “no time limit” language to a challenge filed approximately eleven years after the judgment. The absence of a filing deadline did not eliminate the need to plead and prove fraud, reliance, materiality, and entitlement to relief.
Delay still has practical consequences. Records disappear, memories fade, businesses change, property reaches third parties, and years of performance may complicate an equitable remedy. A person who discovers a potentially fraudulent affidavit should act promptly even though the rule supplies no formal time limit.
A void judgment
Rule 12.540(b)(4) authorizes relief when the judgment is void.
A judgment is not void merely because it is wrong. “Void” ordinarily means the court lacked subject-matter jurisdiction, lacked personal jurisdiction because of defective service, or acted without the notice and opportunity to be heard required by due process.
A judgment entered through an incorrect interpretation of law is usually voidable, not void. Voidable judgments must be challenged through an authorized rehearing, appeal, or timely Rule 12.540 ground. Florida courts generally permit a truly void judgment to be challenged at any time, but they apply the category narrowly.
Satisfaction, discharge, or inequitable prospective operation
Rule 12.540(b)(5) permits relief when:
The judgment has been satisfied, released, or discharged;
An earlier judgment on which it was based has been reversed or vacated; or
It is no longer equitable for the judgment to have prospective application.
This provision is not a general fairness clause. It addresses prospective operation in light of significant later developments. It ordinarily cannot be used to reopen a completed property distribution, correct a legal error, or avoid a settlement simply because later events made the bargain less favorable.
When alimony, child support, or parenting obligations are legally modifiable, the proper vehicle may be a supplemental petition for modification rather than a Rule 12.540 motion. The distinction affects pleading requirements, burdens, effective dates, and available relief.
Fraud on the court
Rule 12.540 preserves the court’s power to entertain an independent action or supplemental proceeding for fraud on the court.
This is not a way to rename an ordinary fraud claim after the one-year deadline has expired. Under Parker v. Parker, 950 So. 2d 388, 391–92 (Fla. 2007), ordinary intrinsic fraud occurring within the proceeding belongs under Rule 12.540(b)(3). The independent fraud-on-the-court doctrine is reserved for exceptional extrinsic fraud or a deliberate scheme that corrupted the judicial process itself and prevented a fair adversarial presentation.
A false answer, inaccurate valuation, disputed testimony, or nondisclosed document may support ordinary fraud without constituting fraud on the court. The distinction turns on whether the conduct merely supplied false evidence within the case or instead prevented the court and an opposing party from fairly adjudicating the dispute.
The extraordinary fraud-on-the-court remedy generally requires clear and convincing proof.
What Conduct Can Amount to Fraud, Duress, Coercion, or Overreaching?
These concepts overlap but are not interchangeable.
Fraud and concealment
Potential examples include:
Knowingly omitting an account from a financial affidavit;
Concealing ownership through another person or entity;
Providing altered statements or ledgers;
Misstating compensation, distributions, debt, or business ownership;
Falsely representing that an asset no longer exists;
Diverting money while providing incomplete records;
Mischaracterizing a marital asset as nonmarital; or
Failing to update a materially false financial affidavit before entry of judgment.
The existence of an error does not establish fraudulent intent. Compensation may fluctuate, business books may use tax accounting conventions, assets may be disputed, and reasonable professionals may disagree about value. The evidence must distinguish an intentional falsehood or concealment from mistake, ambiguity, accounting treatment, or a legitimate legal position.
Duress and coercion
Duress involves wrongful pressure that overcomes a person’s ability to exercise free will. Courts examine the nature of the threat, who created the pressure, whether the threat was improper, the available alternatives, the time to obtain advice, the person’s condition, and whether the person promptly repudiated the agreement once the pressure ended.
Ordinary settlement pressure is not necessarily duress. Statements such as “I will go to trial,” “I will seek fees,” or “this offer expires tonight” may be hard bargaining rather than wrongful coercion. Emotional distress, grief, fear of litigation, or concern about legal expense may be relevant, but they do not automatically invalidate consent.
Threats of unlawful conduct, manufactured emergencies, violence, destruction of property, immigration consequences created through deception, or economic pressure wrongfully created by the enforcing spouse present a different case.
Overreaching
Overreaching generally describes conduct through which one spouse exploits a position of dominance, trust, dependence, weakness, or informational control to obtain an agreement the other spouse did not meaningfully understand or voluntarily accept.
Evidence may include isolation from counsel, misleading explanations of legal rights, control of all financial information, rushed execution, language barriers, interference with disclosure, or exploitation of medical or cognitive impairment.
The final terms matter, but the process matters more. A one-sided agreement negotiated by informed parties with independent counsel may be enforceable. An apparently balanced agreement obtained through deception may not be.
Unfairness Is Not the Same as Invalidity
A Florida court does not set aside an incorporated MSA merely because the division was unequal, one spouse waived alimony, an asset later increased in value, or litigation might have produced a better result.
Settlements involve compromise. A spouse may accept less property for more support, trade liquidity for business ownership, waive an uncertain claim for immediate certainty, or accept a discount to avoid risk and expense. Evaluating one term in isolation can make an integrated bargain look misleadingly unfair.
Under the prejudgment Casto analysis, unfairness may activate a disclosure-and-knowledge presumption. Under postjudgment Rule 12.540, unfairness is not an independent ground for relief. It may still be relevant evidence of motive, materiality, overreaching, or the effect of a misrepresentation, but another recognized ground must be proved.
As Martin demonstrates, allegations that an agreement was patently unfair, that one spouse controlled the finances, or that the challenging spouse was emotionally distressed will not substitute for proof of a Rule 12.540 ground after judgment.
Reliance and Prior Knowledge Often Decide the Case
A nondisclosure case is not proved merely by showing that information was missing. The movant must usually connect the omission to the decision to settle or to the judgment.
That connection becomes difficult when the record shows that the movant:
Knew the disclosure was inaccurate;
Told the court the income or asset information was wrong;
Rejected the other spouse’s valuation;
Suspected an undisclosed account but settled without investigating;
Possessed the relevant tax returns, statements, or business records;
Declined an available deposition or subpoena;
Expressly waived further discovery; or
Accepted benefits after learning the true facts.
In Crupi v. Crupi, 784 So. 2d 611, 614 (Fla. 5th DCA 2001), knowledge of inaccuracies before signing undermined the former wife’s fraud claim.
The Third District applied the same principle in Paniry v. Paniry, 429 So. 3d 111, 112–14 (Fla. 3d DCA 2026). The wife alleged that the husband failed to update his financial affidavit after a promotion. But she had questioned the accuracy of his income before judgment and still proceeded with the settlement. The court held that the trial judge should not have authorized postjudgment discovery without first determining whether the allegations established a prima facie fraud claim, including reliance.
That does not mean a spouse must accept every representation at personal risk. Under Butler, the ability to investigate does not automatically defeat reliance. But actual knowledge, obvious falsity, a deliberate waiver of known questions, and the postlitigation due-diligence concerns identified in Macar can be decisive.
Who Bears the Burden of Proof?
The person seeking relief from the agreement or judgment is the movant and bears the initial burden. It does not matter whether that person was originally the petitioner or respondent in the divorce.
Under the second Casto route, the challenging spouse must first prove that the agreement was unfair or unreasonable under the parties’ circumstances. The burden then shifts to the spouse seeking enforcement to prove full disclosure or the challenger’s general and approximate financial knowledge.
Under Rule 12.540, the movant must establish a recognized ground and show that it warrants relief from the judgment. Florida appellate decisions have not always used identical language for the burden applicable to ordinary Rule 12.540 fraud. Furney v. Furney, 659 So. 2d 364, 365 (Fla. 1st DCA 1995), applied a preponderance or greater-weight standard, relying on the Florida Supreme Court’s civil-fraud standard. Santiesteban v. Santiesteban, 579 So. 2d 891, 892 (Fla. 3d DCA 1991), described the burden as clear and convincing evidence.
Fraud on the court requires the higher clear-and-convincing standard. Because the governing district and theory may affect the formulation, a well-prepared case should be capable of satisfying the stronger standard rather than depending on the difference.
How Much Time Is There to File?
Several deadlines may run at the same time. The safest approach is to calculate all of them from the docket and act under the shortest potentially applicable period.
Within 15 days: rehearing or amendment
Under Florida Family Law Rule of Procedure 12.530, a motion for rehearing, new trial, or to alter or amend a judgment generally must be served within 15 days of the judgment’s filing or entry, as specified by the rule.
A timely authorized Rule 12.530 motion can suspend rendition for appellate purposes. It is often the appropriate vehicle for omissions, inconsistent findings, preserved trial errors, or matters the court can promptly correct.
Rule 12.530 is not interchangeable with Rule 12.540.
Within 30 days: direct appeal
Under Florida Rule of Appellate Procedure 9.110(b), a notice of appeal from a final judgment generally must be filed within 30 days of rendition.
The appeal deadline is jurisdictional. A Rule 12.540 motion does not suspend rendition of the original judgment and does not extend the time to appeal it.
Within a reasonable time, but no more than one year
Motions based on Rule 12.540(b)(1), (2), or (3)—mistake, newly discovered evidence, fraud, misrepresentation, or adverse-party misconduct—must be filed within a reasonable time and no later than one year after the challenged judgment, order, or proceeding.
One year is the outside limit, not a guaranteed waiting period. An unexplained delay may be unreasonable even if the motion is filed before the anniversary date.
The one-year period ordinarily runs from entry of the judgment or order, not from the date the movant discovered the alleged fraud. An appeal does not stop the clock.
No time limit for a fraudulent financial affidavit
A motion actually based on a fraudulent financial affidavit in a marital or paternity case has no Rule 12.540 filing deadline. The exception should be pleaded precisely and tied to specific statements or omissions in the affidavit.
Reasonable time for subsection (b)(5)
Relief based on satisfaction, discharge, reversal of an underlying judgment, or inequitable prospective application must be requested within a reasonable time.
Void judgments and fraud on the court
A truly void judgment may generally be attacked at any time. A qualifying independent claim for fraud on the court is not converted into an ordinary one-year fraud claim merely by the passage of time.
Neither doctrine should be used as a fallback label for an untimely claim that is actually based on intrinsic fraud, legal error, or dissatisfaction with the settlement.
What Is the Process for Seeking Relief?
A set-aside case should be treated as a new evidentiary proceeding inside the original family case, not as an informal request for the judge to reconsider what happened.
1. Obtain the complete record
Counsel should obtain:
Every version of the MSA and its exhibits;
The final judgment and later enforcement, modification, or clarification orders;
The docket and filing dates;
All financial affidavits;
Mandatory disclosure exchanged under Rule 12.285;
Discovery requests and responses;
Deposition transcripts;
Mediation documents that may lawfully be used;
Hearing and trial transcripts;
Valuation reports;
Filed exhibits; and
Any appeal record, briefs, opinions, and mandate.
The distinction between what a client remembers and what the record proves can decide the motion.
2. Identify the correct procedural vehicle
The available vehicle may be:
A prejudgment motion concerning the agreement’s validity;
A Rule 12.530 motion for rehearing or amendment;
A direct appeal;
A Rule 12.540 motion;
A supplemental petition for modification;
A motion to clarify or enforce;
An independent action permitted by Rule 12.540; or
A coordinated combination of trial and appellate proceedings.
Using the wrong vehicle can forfeit the claim even when the underlying grievance is legitimate.
3. Plead the claim with particularity
Fraud and mistake must be pleaded with particularity under Florida Family Law Rule of Procedure 12.120(b). A useful motion identifies:
The exact statement, omission, affidavit entry, or document alleged to be false;
Who made or concealed it;
When and where it occurred;
What the true fact was;
Evidence supporting falsity and knowledge;
Why the fact was material;
What the movant knew at the time;
How the movant relied on the information;
Why the truth could not have been discovered earlier, if due diligence is at issue;
How the conduct affected a specific settlement term or judgment provision;
The applicable Rule 12.540 subsection; and
The precise relief requested.
General allegations that the other spouse “hid money,” “lied throughout the case,” or “failed to disclose everything” may be dismissed without discovery or an evidentiary hearing.
4. Address enforcement and any need for a stay
Filing a Rule 12.540 motion does not suspend the judgment. Unless a stay is entered, payment obligations, transfers, deadlines, support, and other enforceable requirements remain in effect.
A party who simply stops performing may face contempt and enforcement proceedings, interest, attorney’s fees, or other sanctions while the set-aside motion is pending.
If immediate enforcement would transfer property, distribute retirement funds, sell a business, or otherwise make relief ineffective, counsel should evaluate an expedited motion for stay or protective relief. Security or a bond may be required.
5. Establish entitlement before demanding invasive discovery
Postjudgment discovery is not automatic. Paniry teaches that a court should determine whether the allegations establish a prima facie case before allowing a former spouse to reopen broad financial discovery.
If the initial showing is sufficient, the court may need an evidentiary hearing on whether the movant could or should have discovered the information before settling. This protects both sides: legitimate fraud claims can proceed, but unsupported accusations cannot be used as a license to conduct a new financial investigation after judgment.
The discovery request should be tied to the pleaded issue. A claim involving an allegedly omitted brokerage account may justify account-opening records, monthly statements, transfers, tax reporting, and testimony from the account holder or custodian. It does not automatically justify unlimited access to every postdivorce financial transaction.
6. Conduct targeted discovery
Depending on the claim, appropriate discovery may include:
Requests for production;
Interrogatories;
Requests for admissions;
Depositions of the former spouses;
Nonparty subpoenas to banks, brokerages, employers, accountants, payroll processors, and business custodians;
Business ledgers and general journals;
Tax returns, K-1s, W-2s, 1099s, and payroll records;
Loan applications and personal financial statements;
Electronic communications and file metadata;
Trust, estate-planning, and entity records when relevant and discoverable; and
Expert inspection of accounting or valuation data.
Discovery should test both the alleged deception and reliance. An opposing lawyer will look for records showing that the movant already possessed the information, discussed it with counsel, rejected the representation, or knowingly waived further inquiry.
7. Present admissible evidence at an evidentiary hearing
A verified motion or affidavit may justify a hearing, but it ordinarily is not a substitute for admissible evidence at that hearing.
In Rowe-Lewis v. Lewis, 267 So. 3d 1039, 1041–42 (Fla. 4th DCA 2019), detailed and documented fraud allegations warranted an evidentiary hearing. Conversely, conclusory allegations or a claim refuted by the existing record may be denied without one.
The movant should be prepared to prove the claim through authenticated documents, competent witnesses, and expert testimony where necessary. The opposing party should be prepared to establish disclosure, knowledge, lack of reliance, waiver, timeliness defenses, and the economic logic of the settlement as a whole.
8. Obtain a detailed order
A meaningful order should identify the governing rule, resolve material credibility disputes, state factual findings, address timeliness, and explain the relief granted or denied.
Detailed findings improve enforceability and appellate review. A silent or ambiguous order may make it difficult to determine whether the court applied Casto, Rule 12.540, contract law, or an improper general-equity standard.
What Evidence Matters Most?
Set-aside litigation is usually won or lost through chronology, documents, and credibility.
The essential chronology
The parties should build a date-specific chronology showing:
When each financial affidavit was signed and filed;
When documents were exchanged;
When the challenged event occurred;
When the representation was made;
When the movant learned or suspected it was false;
What discovery remained available;
When the MSA was signed;
What was said at the final hearing;
When judgment was entered;
When benefits were accepted or obligations performed;
When the alleged truth was discovered; and
When the motion was filed.
Dates often determine timeliness, reliance, due diligence, and whether later conduct amounted to ratification.
Financial evidence
Important evidence may include:
Bank, brokerage, and retirement statements;
Tax returns and tax transcripts;
K-1s and records of pass-through income or distributions;
W-2s, 1099s, bonus plans, equity awards, and deferred compensation;
Business profit-and-loss statements, balance sheets, general ledgers, and cash-flow records;
Shareholder, partnership, and operating agreements;
Capital-account records;
Loan applications and personal financial statements;
Closing statements and property records;
Cryptocurrency exchange and wallet records;
Trust records;
Insurance policies;
Valuation reports and workpapers; and
Documents showing what each spouse or advisor actually received.
A later account balance is not necessarily proof of an earlier concealed value. The evidence must be tied to the relevant valuation and disclosure date.
Communications
Emails, text messages, letters, draft agreements, and communications with financial professionals may establish:
Knowledge of the asset;
Requests for additional information;
Express reliance on a representation;
Refusal to provide records;
Threats or pressure;
Negotiated tradeoffs;
Intentional concealment;
Waiver of discovery; or
Advice received before signing.
Communications with counsel may be privileged. A party who claims, for example, that counsel never explained a known issue may create a dispute about whether attorney-client communications have been placed at issue. Privilege waiver is fact-specific and should be evaluated before the allegation is made.
Witnesses and credibility
Likely witnesses include:
The former spouses;
Accountants and bookkeepers;
Business officers or employees;
Financial advisors;
Bank or brokerage custodians;
Valuation professionals;
Lawyers, when testimony is permitted and necessary;
The mediator, subject to mediation privilege and statutory restrictions; and
Third parties who observed threats, impairment, disclosure, or signing.
Credibility is tested through prior sworn testimony, affidavits, discovery responses, financial records, settlement drafts, and conduct after judgment. A witness who claims complete ignorance but signed tax returns, received account statements, participated in business operations, or questioned the same information before settlement should expect close cross-examination.
Experts and Financial Professionals
A forensic accountant may be useful when the dispute involves tracing, business cash flow, pass-through entities, hidden distributions, reconstructed income, commingled assets, or inconsistencies among tax returns, financial affidavits, and internal books.
A business valuation professional may be necessary when the alleged misrepresentation concerns enterprise value, ownership, goodwill, liabilities, related-party transactions, or a valuation assumption.
An expert cannot decide whether a witness committed fraud. That determination belongs to the court. The expert can explain the records, calculate the difference between disclosed and actual figures, evaluate materiality, and identify whether an accounting treatment has an innocent or deceptive explanation.
The expert’s assignment should match the legal issue. An expensive present-day valuation may have little value if the question is what was known, disclosed, and relied upon at the time of settlement.
Authentication, Hearsay, and Admissibility
Financial records do not become admissible merely because they were produced in discovery.
The Florida Evidence Code may require counsel to address:
Authentication under section 90.901;
The business-records exception under section 90.803(6);
Party admissions under section 90.803(18);
Expert testimony under section 90.702;
Summaries of voluminous records under section 90.956;
Attorney-client, accountant-client, and other privileges;
The trade-secret privilege under section 90.506; and
The distinction between using a statement to prove its truth and using it to prove notice, knowledge, or reliance.
A spreadsheet prepared for litigation is not automatically a business record. Screenshots require authentication. Tax returns may prove what was reported without conclusively proving that every reported figure was economically or legally correct.
An effective evidentiary plan identifies the sponsoring witness, exception, foundation, and purpose for each important exhibit before the hearing begins.
Mediation Confidentiality
Florida mediation communications are generally confidential and privileged under section 44.405, Florida Statutes. The signed written settlement agreement itself is not confidential under that statute unless the parties agreed otherwise.
The statute also contains a limited exception for mediation communications offered to establish or refute legally recognized grounds for voiding or reforming a mediated settlement agreement. The exception does not make the entire mediation discoverable or public. A communication admitted for that limited purpose remains protected against unrelated use.
Counsel should identify exactly which communication is needed, the recognized invalidity ground it proves, and why the evidence falls within the statutory exception. Attempts to obtain the mediator’s entire file or testimony about general negotiation positions may fail and may create avoidable privilege disputes.
Confidentiality, Privacy, and Protective Orders
Financial affidavits and exhibits can contain account numbers, birth dates, tax information, business secrets, medical information, and information about children.
Rule 12.540 expressly requires motions and attachments to comply with Florida Rule of General Practice and Judicial Administration 2.425, which requires minimization of sensitive information in court filings.
A protective order under Family Rule 12.280 may restrict use or disclosure of confidential discovery. Filing under seal requires a separate legal basis and compliance with the rules governing access to court records; confidentiality between the parties does not automatically make a judicial record secret.
Protective measures should be addressed before sensitive material is filed, not after it becomes part of the public record.
Common Defenses to a Set-Aside Motion
The defending party will usually challenge both the legal sufficiency and factual foundation of the motion.
Common defenses include:
The motion identifies no recognized Rule 12.540 ground;
Unfairness or regret is being mislabeled as fraud;
The challenged representation was true, immaterial, an estimate, an opinion, or a reasonable accounting position;
The alleged omission did not affect the settlement;
The movant knew the true facts or believed the information was false before signing;
The movant had the relevant records;
The movant waived additional discovery with known questions unresolved;
The motion was filed outside the applicable deadline or after an unreasonable delay;
The motion attempts to correct judicial error that should have been raised on rehearing or appeal;
The alleged evidence is not newly discovered and could have been obtained through due diligence;
The judgment is at most voidable, not void;
The alleged conduct is intrinsic fraud and does not qualify as fraud on the court;
The movant ratified the agreement by accepting benefits after discovering the challenged facts;
The agreement’s severability clause prevents invalidation of unrelated provisions;
The movant participated in or benefited from the same allegedly improper conduct;
Relief would prejudice innocent third parties; or
The requested remedy exceeds what Rule 12.540 authorizes.
Acceptance of benefits is not always a complete waiver. It is nevertheless powerful evidence when the movant continued accepting performance after learning the facts now claimed to justify rescission.
What Relief Can the Court Grant?
Rule 12.540 permits relief “on such terms as are just.” The available remedy depends on the ground proved, the structure of the agreement, severability, the judgment’s language, and the rights affected.
A court may potentially:
Vacate the entire final judgment;
Vacate or reopen affected financial provisions;
Set aside the incorporated agreement;
Conduct a new hearing on unresolved issues;
Restore the case to an earlier procedural posture;
Require an accounting or return of property;
Impose conditions designed to preserve the status quo;
Stay enforcement;
Enforce unaffected provisions; or
Deny relief while permitting an independent enforcement or modification claim.
Rule 12.540 itself is a procedural remedy from a judgment. It does not automatically create an award of tort damages.
A court also cannot simply rewrite the agreement to produce what it believes would have been a better bargain. Reformation requires proof that the written instrument failed to express the parties’ actual agreement. Rescission or vacatur may reopen contested issues rather than guarantee the movant’s preferred replacement terms.
The entire agreement may be reopened
Many MSAs contain integrated tradeoffs. If the court sets aside a material provision, the opposing spouse may argue that the entire bargain must fall.
A spouse seeking to reopen an unfavorable asset provision may also place favorable alimony, fee, tax, or debt provisions at risk. The economic analysis should compare the complete existing settlement against the realistically available result after renewed litigation.
Child-related provisions receive different treatment
Parents cannot contract away the court’s responsibility to protect a child’s interests. Child support and parenting arrangements may be modifiable under statutory standards even when the agreement itself remains valid.
A change in circumstances after judgment is ordinarily a modification issue, not proof that the original agreement was fraudulent.
Property rights are strongly final
Equitable-distribution provisions generally become final once the judgment and appeal periods expire. A later decline in value, unexpected tax consequence, poor investment result, or inability to refinance ordinarily does not authorize modification.
Attorney’s Fees, Costs, and Sanctions
Attorney’s fees may be available under the MSA, chapter 61, or another applicable source.
Section 61.16, Florida Statutes, permits an award after considering the parties’ financial resources. In Bane v. Bane, 775 So. 2d 938, 942–44 (Fla. 2000), the Florida Supreme Court recognized that section 61.16 may apply to a proceeding seeking relief from a dissolution judgment based on fraud.
A contractual prevailing-party provision may create additional exposure. Its enforceability can depend on whether the agreement is rescinded, whether the fee clause survives, and which claims were litigated.
The court may also consider sanctions under section 57.105, Florida Statutes, or its inherent authority when a claim or defense is knowingly unsupported, pursued for improper delay, or litigated through bad-faith conduct. The statute’s notice and safe-harbor requirements must be observed.
Our Florida family-law attorney’s-fee guide discusses these issues in greater detail.
What If the Final Judgment Was Already Appealed?
An appeal does not necessarily eliminate every later Rule 12.540 remedy, but it changes jurisdiction and does not extend any deadline.
If the appeal is pending
A pending appeal generally transfers jurisdiction over the matters on appeal to the appellate court. The trial court retains certain authority under Florida Rule of Appellate Procedure 9.600, including specified family-law authority, but it ordinarily cannot alter the judgment being reviewed without appellate permission.
The one-year Rule 12.540 deadline continues running during the appeal. A party who discovers a potential Rule 12.540 ground should not wait for the appeal to end. Counsel may need to file the motion to preserve timeliness and promptly ask the appellate court to relinquish jurisdiction so the trial court can consider it.
The trial and appellate strategy should be coordinated. Statements made in one court may affect the other proceeding.
If the appeal has concluded
After the mandate, the trial court may consider a distinct and timely Rule 12.540 motion. But the motion cannot be used to relitigate an issue decided on appeal, evade the law-of-the-case doctrine, or obtain belated review of an ordinary legal error.
A genuine later-discovered fraud claim may be different from an argument that the appellate court already rejected. The distinction depends on the operative facts and the relief requested.
Appealing the Rule 12.540 order
An order granting or denying an authorized and timely Rule 12.540 motion is separately reviewable under Florida Rule of Appellate Procedure 9.130(a)(5). The notice generally must be filed within 30 days of rendition of that order.
A motion for rehearing directed to the Rule 12.540 order is not authorized under Rule 9.130 and does not toll the 30-day appeal period. Waiting for a rehearing ruling can therefore cause the appeal to be dismissed as untimely.
An appeal from the Rule 12.540 order ordinarily reviews that order—not the merits of the original judgment whose appeal period expired.
How Appellate Courts Review These Cases
The applicable standard of review depends on the issue:
Selection and interpretation of the governing rule are reviewed de novo.
Pure questions of timeliness are generally reviewed de novo.
Whether a judgment is void is generally reviewed de novo.
Factual findings are reviewed for competent, substantial evidence.
Credibility determinations receive substantial deference.
The ultimate grant or denial of discretionary Rule 12.540 relief is generally reviewed for abuse of discretion.
A complete record is essential. The appellate court cannot reweigh credibility and generally cannot reverse a fact-dependent ruling without the hearing transcript and admitted exhibits.
Preservation may require a timely objection, a proffer of excluded evidence, a request for findings, and an appropriate motion addressing omissions in the order.
Strategic Risks and Unintended Consequences
A set-aside motion can create consequences beyond the provision under attack.
Reopening the entire bargain
The defending spouse may seek to restore every claim surrendered in the settlement, not merely the term the movant dislikes.
Privilege disputes
Allegations that counsel, an accountant, or another advisor failed to explain information may place otherwise privileged advice at issue.
Reciprocal financial discovery
A movant alleging concealment should expect scrutiny of the movant’s own assets, disclosures, tax returns, communications, and settlement conduct.
Inconsistent tax or regulatory positions
A position taken in family court may conflict with a tax return, loan application, corporate filing, benefits application, or sworn statement in another proceeding. Those inconsistencies can affect credibility and create risks outside the divorce case.
Transfers to third parties
Property may have been sold, refinanced, distributed, inherited, or transferred to an innocent third party. Vacating the judgment does not guarantee that every transaction can be unwound.
Fee exposure
Even a plausible motion can become economically irrational if the likely recovery is smaller than the litigation cost. A weak or bad-faith motion may produce substantial fee and sanction exposure.
Loss of settlement leverage
A credible, documented motion may produce leverage. An exaggerated motion can have the opposite effect by revealing a lack of proof and hardening the opposing party’s position.
Common Client Mistakes
The most damaging mistakes include:
Waiting while a 15-day, 30-day, or one-year deadline runs;
Stopping performance without obtaining a stay;
Filing a general accusation before collecting supporting documents;
Treating an unfavorable deal as proof of fraud;
Ignoring statements made at the final hearing;
Deleting messages or replacing devices;
Contacting financial institutions in a manner that alerts someone who may move assets;
Violating mediation confidentiality;
Blaming former counsel without considering privilege consequences;
Assuming the court will permit unrestricted postjudgment discovery;
Accepting substantial benefits after learning the alleged truth without legal advice;
Using present-day values to prove historical fraud; and
Failing to calculate the consequences if the entire agreement is reopened.
Practical Steps to Take Immediately
If an agreement or judgment may have resulted from fraud, mistake, or coercion:
Preserve the MSA, judgment, financial affidavits, tax returns, discovery, correspondence, and transcripts.
Download relevant electronic records without altering metadata.
Write a factual chronology identifying what was represented, what was known, when the truth was discovered, and what decision the information affected.
Do not destroy, edit, annotate, or selectively forward original communications.
Continue complying with the judgment unless a court enters a stay or counsel advises that a particular obligation is not enforceable.
Calculate the 15-day, 30-day, and one-year deadlines from the official docket.
Identify imminent transfers, sales, refinancing, distributions, or enforcement hearings.
Avoid public accusations that could affect credibility, privilege, settlement, or related claims.
Have a lawyer evaluate the entire agreement, not just the challenged term.
Determine whether the expected remedy justifies the cost and risk of reopening the case.
When Immediate Legal Attention Is Required
Prompt review is especially important when:
The judgment was entered less than 15 days ago;
The 30-day appeal deadline has not expired;
The one-year Rule 12.540 deadline is approaching;
An appeal is pending;
A home, business, investment, or retirement account is about to be transferred;
Enforcement or contempt proceedings are scheduled;
Records may be destroyed under a retention policy;
A spouse is dissipating, concealing, or moving assets;
Threats, domestic violence, or coercive control are ongoing;
A financial affidavit appears materially false;
A third party may acquire an interest in the disputed property; or
The issue implicates tax, criminal, regulatory, bankruptcy, or business litigation.
Questions Experienced Florida Counsel Will Investigate
Before recommending a strategy, counsel should determine:
What precise agreement, judgment, or provision is being challenged?
Was the agreement incorporated, ratified, merged, or merely approved?
Was the MSA signed before or after litigation began?
What discovery and mandatory disclosure were available?
What was produced, requested, or knowingly waived?
What exact fact was false or concealed?
What admissible evidence proves the truth?
Did the other spouse know the representation was false?
What did the movant know or suspect before signing?
What was said under oath at the final hearing?
Did the movant actually rely on the challenged information?
Would accurate information have changed a specific term or the decision to settle?
When was the problem discovered?
Which deadline applies?
Has the movant accepted benefits after discovering the issue?
Does mediation confidentiality restrict important evidence?
Will the theory place attorney-client or accountant-client advice at issue?
Is an expert needed to prove value, income, tracing, or materiality?
Can the requested relief be limited, or will the entire agreement reopen?
What property has been transferred to third parties?
Is a stay required?
What fee provisions and sanction risks apply?
Was there a prior appeal, and what issues did it decide?
Questions and Answers
Can I set aside an MSA because I did not have a lawyer?
Not by itself. Lack of independent counsel is relevant to knowledge, voluntariness, disclosure, and overreaching, but Florida adults may enter binding agreements without counsel. The court will examine whether the absence of counsel contributed to fraud, coercion, misunderstanding, or another recognized ground.
Can I set aside an agreement because it is unfair?
Before judgment, material unfairness may trigger the second Casto analysis if Casto applies. After incorporation into a final judgment, unfairness alone is not a Rule 12.540 ground. The motion must establish fraud, mistake, newly discovered evidence, voidness, or another ground recognized by the rule.
Is failure to disclose an asset automatically fraud?
No. The movant must generally prove materiality, knowledge, intent, reliance, and resulting effect. The defending spouse may show that the asset was disclosed elsewhere, the movant knew about it, it was nonmarital, its omission was accidental, or it did not affect the settlement.
What if the financial affidavit was false?
A knowingly false and material financial affidavit can support Rule 12.540 relief. Motions actually based on fraudulent financial affidavits in marital or paternity cases have no filing deadline. The movant must still identify the false entry, prove fraudulent intent and reliance, and connect the misstatement to the judgment.
Does the one-year deadline begin when I discover the fraud?
Ordinarily no. For Rule 12.540(b)(1)–(3), the one-year outer limit runs from the judgment, order, or proceeding—not discovery of the problem. The fraudulent-financial-affidavit exception and a qualifying fraud on the court are different, but they should not be assumed to apply.
Can I obtain financial discovery before proving fraud?
Not automatically. Under Paniry, a court should first determine whether the allegations establish a prima facie fraud case before permitting postjudgment financial discovery. The court may also examine whether the information could or should have been discovered before settlement.
What if I knew the disclosures were wrong but signed anyway?
Actual knowledge creates a serious reliance problem. If the record shows that a spouse challenged the information, called it inaccurate, and still settled without resolving the issue, the court may conclude that the spouse did not rely on the representation.
Is emotional distress enough to prove duress?
Usually not. Emotional distress is relevant, but duress requires wrongful pressure that overcame free will. Courts distinguish coercive conduct from the ordinary stress, uncertainty, and bargaining pressure associated with divorce litigation.
Can my former spouse enforce the judgment while my motion is pending?
Yes, unless the court enters a stay or other protective order. Rule 12.540 expressly provides that the motion does not suspend the judgment’s operation.
Will the court set aside only the fraudulent provision?
Possibly, but not necessarily. Severability, the agreement’s structure, and the relationship among negotiated terms control. If the bargain was integrated, invalidating one material term may reopen the entire agreement.
Can I use Rule 12.540 to correct a judge’s legal error?
Generally no. As explained in Theodorides v. Theodorides, 201 So. 3d 141, 144 (Fla. 3d DCA 2015), Rule 12.540 is not a substitute for rehearing or appellate review of judicial error. Legal mistakes ordinarily must be preserved and challenged within the rehearing and appeal deadlines.
What if I already appealed the final judgment?
A completed appeal does not necessarily bar a distinct, timely Rule 12.540 claim based on new qualifying facts. But the motion cannot relitigate issues already decided or revive an expired appeal. If the appeal remains pending, trial and appellate counsel may need to seek relinquishment of jurisdiction immediately.
Can I appeal the denial of my motion to vacate?
Yes. An order granting or denying an authorized and timely Rule 12.540 motion is separately appealable. The notice generally must be filed within 30 days. A rehearing motion directed to that order does not toll the appeal deadline.
Can the court award attorney’s fees?
Potentially. Fees may be available under section 61.16, the MSA, section 57.105, or another applicable basis. Entitlement depends on the pleadings, financial circumstances, contract language, litigation conduct, and result.
Is a set-aside motion the same as modifying alimony or child support?
No. A set-aside motion attacks the validity of an agreement or judgment. Modification generally accepts the original judgment as valid but seeks prospective relief based on a legally sufficient change in circumstances. Different pleadings, standards, deadlines, and remedies apply.
Preparing the Case for Decision
The strongest set-aside cases are built around a provable sequence:
A specific material representation or required disclosure;
Reliable evidence that it was false;
Proof that the other spouse knew the truth;
Evidence of intent to influence the settlement or judgment;
Proof that the movant did not already know the truth;
A direct connection between the deception and a material settlement term; and
A procedurally correct, timely request for relief.
The strongest defenses use the same framework in reverse. They establish disclosure, actual knowledge, negotiated tradeoffs, available discovery, lack of reliance, immateriality, timeliness problems, and finality.
These cases require more than finding a discrepancy. They require proving what happened, when it happened, what each spouse knew, why the disputed information mattered, and what relief the court still has authority to grant.
Richard J. Mockler and Angela L. Leiner handle Florida family, civil, financial, trial, and appellate disputes. That combined experience is particularly relevant when a set-aside claim involves business records, tax issues, contested financial affidavits, expert testimony, evidentiary hearings, or appellate preservation.
Speak With a Florida Family-Law Attorney
To consult one of our attorneys or for more information concerning setting aside a marital settlement agreement in Florida, call us at (813) 331-5699 or contact us online.