More Florida prenups die on disclosure than on any other ground. The statute's phrase is "a fair and reasonable disclosure of the property or financial obligations of the other party" — nine words that decide, decades later, whether your agreement is a shield or a piece of paper. This page explains what complete financial disclosure actually entails: the schedules, the documents behind them, how to handle a business or an expected inheritance, and the narrow, dangerous option of waiving disclosure altogether.
Where disclosure sits in the statute
Under section 61.079(7)(a), Florida Statutes, a spouse challenging a prenup as unconscionable wins only by also proving three disclosure elements: they were not given fair and reasonable disclosure of the other party's property and obligations; they did not voluntarily and expressly waive that disclosure in writing; and they did not have, and reasonably could not have had, adequate knowledge of the other party's finances. Read that carefully and the drafting strategy writes itself. Disclosure is the enforcing spouse's insurance policy: if disclosure was genuinely complete, the unconscionability attack collapses at the first element, no matter how lopsided the deal looks years later. Separately, concealment feeds the fraud and overreaching defenses — a hidden account discovered in the divorce is the single fastest way to put an entire agreement at risk. Full disclosure is not a courtesy. It is the load-bearing wall.
The schedules: how disclosure is actually packaged
A properly built prenup attaches disclosure as exhibits — typically Schedule A for one party and Schedule B for the other — each signed or initialed, each dated close to execution. A schedule that says "various bank accounts, approx. $200,000" is an invitation to litigate. Ours itemize:
Assets. Every financial account by institution and last four digits, with a recent balance. Real property by address, title holder, estimated value, and mortgage balance. Business interests by entity name, percentage owned, and a stated valuation with its basis (more below). Retirement accounts by plan type and balance — with ERISA plans flagged, because their survivor benefits need a separate post-wedding consent no prenup can replace. Vehicles, significant personal property, art, jewelry, crypto (by exchange or wallet, with a valuation date — volatility makes the date part of the disclosure), stock options and RSUs including unvested grants, and receivables owed to you.
Liabilities. Mortgages, credit lines, student loans, tax debts, personal guarantees — the guarantee is the one people forget, and the one that most often shocks a spouse in a downturn. If you have co-signed for a business or a relative, it belongs on the schedule.
Income and expectancies. Current income from all sources, and — this is where careful lawyering shows — material expectancies: a trust of which you are a beneficiary, an inheritance realistically anticipated, carried interest, an earn-out from a business sale. Florida law does not require you to predict the future, but an agreement that waives rights to "any inheritance" while concealing that a large one was imminent is a fraud argument waiting to happen. Disclose the existence and general character; the exact number can remain honestly approximate.
The documents behind the schedules
The schedules are summaries; the file behind them is what wins the fight later. For each engagement we assemble and preserve: recent statements for every listed account, the latest two or three years of tax returns exchanged between the parties, appraisals or broker opinions for significant real estate, and the valuation workpapers for any business interest. The other side does not necessarily need every page — but they need access, and the record needs to show access was given. Our transmittal letters list what was provided and when, and we keep the receipts. Twenty years from now, "here is the letter, here is what was attached, here is her lawyer's confirmation" ends most disclosure arguments before they start.
The hard case: valuing a business you own
For business owners the disclosure schedule has a trap inside it: the value you state can be quoted back to you in the divorce. State it too low and you invite a fraud-in-the-disclosure attack; state it carelessly high and you may fight your own number when the business is later valued for equitable distribution. The disciplined approach is to disclose the interest fully — entity, percentage, role — and attach a stated value with a transparent basis: a book-value calculation, a recent formal valuation, or an agreed methodology written into the agreement itself. In the strongest prenups, the parties go further and agree in advance on how the business will be valued if the agreement is ever applied — the method, the definition of what is separate versus marital (including appreciation and the owner's active efforts), and who pays for the appraiser. That single clause has saved our litigation clients more money than any other provision we draft.
Waiving disclosure: legal, and usually a mistake
Section 61.079 expressly allows a party to waive disclosure "voluntarily and expressly ... in writing." So yes — a Florida prenup can be built on a written disclosure waiver. We draft them rarely and reluctantly, because the waiver only shrinks one prong of one defense: it does nothing against fraud, duress, coercion, or overreaching, and an agreement signed blind is the natural habitat of an overreaching argument. There are legitimate uses — a genuinely wealthy couple who each simply do not care about the other's balance sheet, documented as exactly that, with independent counsel on both sides. For everyone else, our advice is blunt: if the deal only works when your future spouse doesn't know the numbers, the problem is the deal, not the disclosure.
One more wrinkle worth knowing, because it surprises even lawyers: for waivers of estate rights — elective share, homestead, exempt property — executed before marriage, Florida's probate code (section 732.702) affirmatively requires no disclosure at all. After marriage, fair disclosure is required for the same waiver. It is one of several reasons the pre-wedding signing date, and the two-subscribing-witness formality that section applies, get managed so carefully on our execution page.
What happens when someone hides the ball
Concealment discovered later gives the challenging spouse a menu: unconscionability with the disclosure elements satisfied, fraud in the inducement, overreaching — often all three pled together under Casto v. Casto's framework for agreements it governs. Depending on the findings, a court can refuse to enforce some or all of the agreement, and the concealing spouse walks into the divorce with their credibility already spent — the most expensive thing you can lose in front of a family judge. The irony we see in practice: the asset that gets hidden is rarely large enough to have changed the negotiation. People torch six-figure protection to obscure a five-figure account.
Common questions
No statute says "tax returns" — the requirement is fair and reasonable disclosure. But returns are the cleanest, hardest-to-dispute evidence that income and sources were shared, which is why we exchange them in nearly every engagement. If a return reveals something sensitive, that is a conversation with your lawyer about how to disclose properly — not a reason to skip it.
The standard is fair and reasonable, not audited-to-the-penny. Good-faith estimates, dated and labeled as estimates, satisfy it — especially for hard-to-value assets like closely held businesses or crypto. What the standard does not tolerate is omission of entire assets, categorical vagueness ("miscellaneous investments"), or numbers you knew were wrong when you wrote them. When in doubt, disclose the item and explain the uncertainty of the value.
An expectancy is not property, and Florida inheritances stay non-marital if never commingled — but if the agreement asks your future spouse to waive rights connected to family wealth, fairness (and the fraud defense) counsels disclosing that the expectancy exists and its general nature. You need not attach your parents' balance sheet. The line is concealment: waivers extracted while a known, imminent windfall was hidden are how enforcement cases are lost.
Understand what you would be doing: giving up, in writing, your strongest future defense while keeping obligations that may bind you for life. Sometimes a mutual waiver between two independently wealthy, independently advised people is rational. For a spouse with less — less money, less information, less leverage — it almost never is. Have the waiver and the whole agreement reviewed first; that is exactly what our independent review engagement is for.
Twice, in practice. If the wedding is postponed long after signing, refresh the schedules by short amendment so the agreement takes effect on current facts. And if you later amend the agreement or sign a postnup, the disclosure duty applies anew — after marriage, stricter. A prenup itself does not impose a continuing duty to update the other spouse annually, though some couples build in periodic exchange as a chosen term.
Disclosure done right is the difference between a prenup and a promise.
Call (407) 749-1034 or request a confidential consultation. Flat-fee drafting and review, quoted before you commit.
General information about Florida law — not legal advice, and no attorney-client relationship is created by reading it. Authorities referenced include § 61.079(7), Fla. Stat., § 732.702, Fla. Stat., and Casto v. Casto, 508 So. 2d 330 (Fla. 1987) (verified July 2026). Every situation turns on its own facts.