Florida Prenuptial Agreements: The Complete Guide (2026)

What Is a Prenuptial Agreement Under Florida Law?

A prenuptial agreement — also called a premarital agreement or “prenup” — is a contract between two individuals who intend to marry. It establishes each party’s rights and obligations regarding property, debts, and spousal support in the event of divorce, separation, or death. Florida codified its prenuptial agreement law under § 61.079, Fla. Stat., adopting a version of the Uniform Premarital Agreement Act (UPAA).

Under § 61.079(3), a premarital agreement must be in writing and signed by both parties. It becomes effective upon marriage. No additional consideration — such as an exchange of money — is required beyond the marriage itself. This means that the mutual promise to marry is sufficient legal consideration to support the contract.

Florida courts have consistently upheld properly drafted prenuptial agreements. The law treats engaged adults as capable of negotiating their own financial arrangements, provided both parties enter the agreement voluntarily and with adequate knowledge of each other’s financial circumstances. For a deeper analysis of the statute itself, visit our annotated guide to Florida Statute § 61.079.

Who Should Get a Prenup in Florida?

Many people assume prenuptial agreements are reserved for the ultra-wealthy. That is a misconception. Any person entering marriage with assets, income, a business, children from a prior relationship, or simply a desire for financial clarity can benefit from a prenup. In our Coral Gables prenuptial agreement practice, we work with clients across a wide range of financial situations.

You should seriously consider a prenup if any of the following apply:

• You own a business or professional practice. Without a prenup, your spouse may claim a share of your company’s value upon divorce, including any increase in value during the marriage under § 61.075(6)(a)1.b.
• You are entering a second or subsequent marriage. Protecting assets intended for children from a prior relationship is one of the most common and compelling reasons to execute a prenup.
• One or both partners have significant assets or debts. A prenup can shield you from a future spouse’s pre-existing liabilities and establish clear property boundaries.
• You own real estate or investment property. Florida’s equitable distribution law under § 61.075 can convert separate property into marital property if not properly protected.
• You expect a significant inheritance or trust distribution. While inheritances are generally non-marital under Florida law, commingling can change that classification.
• You or your partner earn substantially more. Disparate incomes create complex alimony exposure. A prenup can define or waive spousal support obligations in advance.
• You are an entrepreneur or startup founder. Protecting equity, intellectual property, and future business growth requires specific prenuptial provisions. Learn more in our guide for startup founders and equity protection.

Still not sure if a prenup is right for you? Our guide on whether you need a prenup in Florida walks through the decision in more detail.

What Can a Florida Prenup Include?

Florida Statute § 61.079(4) sets out a broad list of subjects that a prenuptial agreement may address. The statute is permissive: parties may contract regarding “any other matter, including their personal rights and obligations, not in violation of either public policy or a statute imposing a criminal penalty.”

Specifically, a Florida prenup may address:

• Property rights and obligations in each other’s property, whether owned at the time of marriage or acquired afterward, including the right to buy, sell, transfer, or otherwise control property § 61.079(4)(a)1.
• Division of property upon divorce or death, including whether certain assets remain non-marital regardless of how they are titled or used during the marriage § 61.079(4)(a)2–3.
• Spousal support (alimony) modification or elimination, including the amount, duration, and type of alimony that would apply — or a full waiver of alimony rights § 61.079(4)(a)4.
• Life insurance beneficiary designations and obligations to maintain policies as security for support obligations § 61.079(4)(a)5.
• Choice of law, allowing parties to elect which state’s law governs the interpretation of the agreement § 61.079(4)(a)7.
• Business interests and ownership stakes, defining whether appreciation in a business during the marriage is marital or non-marital property.
• Debt allocation, protecting each spouse from the other’s pre-existing liabilities including student loans, credit card debt, and tax obligations.
• Rights in death benefits, retirement accounts, and estate planning, which can be coordinated between the prenup and each party’s estate plan.

For a complete list of what to cover, use our Florida prenuptial agreement checklist as a starting point for your planning conversations.

What Can’t a Florida Prenup Do?

Despite their broad scope, Florida prenuptial agreements have clear legal limits. Understanding these boundaries is essential to drafting an agreement that will hold up in court.

Child custody and child support cannot be determined by a prenup. Florida courts retain exclusive jurisdiction over matters involving the best interests of children. Under § 61.079(4)(b), any provision in a prenuptial agreement that adversely affects a child’s right to support is unenforceable. A court will disregard any custody or timesharing arrangement written into a prenup and make its own determination at the time of divorce.

Unconscionable terms will not be enforced. Under § 61.079(7), a court may refuse to enforce a prenup — in whole or in part — if it was unconscionable at the time of signing. Unconscionability means the agreement is so one-sided that no reasonable person would have agreed to it. Florida courts assess this as of the date the agreement was executed, not the date of divorce.

Provisions that violate public policy or criminal law are void. A prenup cannot require illegal acts, and it cannot include “lifestyle clauses” (such as penalties for infidelity or weight gain) that Florida courts have found unenforceable as contrary to public policy. While some states may tolerate such provisions, Florida courts view them with skepticism.

A prenup cannot be used to facilitate or encourage divorce. Courts have historically struck provisions that appear designed to incentivize one party to end the marriage, though modern Florida courts tend to take a less paternalistic view of this issue.

How to Make a Florida Prenup Enforceable

The enforceability of a Florida prenuptial agreement depends on compliance with the requirements set out in § 61.079. Courts will enforce a prenup unless the challenging party demonstrates that it fails one or more of these legal tests. Our enforceability guide covers this topic in detail, but here are the essential requirements:

1. The Agreement Must Be in Writing and Signed

Under § 61.079(3), a prenuptial agreement must be reduced to writing and signed by both parties. Oral prenuptial agreements are unenforceable in Florida. While notarization is not strictly required by the statute, we strongly recommend it. Notarization provides independent evidence that both parties signed voluntarily and that the signatures are authentic.

2. Both Parties Must Enter the Agreement Voluntarily

Voluntariness is the most frequently litigated issue in prenup challenges. Under § 61.079(7)(a)1, a prenup is unenforceable if it was executed involuntarily. Courts examine the totality of circumstances, including whether each party had adequate time to review the agreement, whether independent legal counsel was available, and whether any coercion or duress was present.

3. There Must Be Fair and Reasonable Financial Disclosure

Under § 61.079(7)(a)2, a party challenging a prenup can succeed by showing they were not provided a fair and reasonable disclosure of the other party’s property and financial obligations. This requirement can be satisfied in three ways: full written disclosure, a voluntary waiver of the right to disclosure, or actual knowledge of the other party’s finances. In practice, we always recommend full disclosure via sworn financial affidavits.

4. The Terms Must Not Be Unconscionable

The agreement must not be unconscionable at the time of execution. Under § 61.079(7), unconscionability coupled with inadequate disclosure is a ground for invalidation. Courts look at whether the terms would leave one party destitute or in a dramatically worse position than the other, with no reasonable justification.

5. Each Party Should Have Independent Legal Counsel

While Florida law does not technically require both parties to have their own attorney, the absence of independent counsel for one party is a significant red flag that courts will scrutinize. Having separate attorneys dramatically strengthens the enforceability of the agreement. For more on this critical issue, read our article: Do I need my own lawyer to review a prenup in Florida?

The 3 Ways to Challenge a Prenup in Florida

Florida Statute § 61.079(7) establishes three grounds upon which a prenuptial agreement can be challenged and potentially invalidated. The party seeking to set aside the agreement bears the burden of proof.

Ground 1: Involuntary Execution

Under § 61.079(7)(a)1, a prenup is voidable if the challenging party proves they did not execute it voluntarily. Evidence of duress, coercion, or undue influence — such as presenting the agreement just days before a large wedding with no time for legal review — can support this challenge. Florida courts have found involuntariness where one party was given an ultimatum with insufficient time to consider alternatives.

Ground 2: Fraud, Nondisclosure, or Misrepresentation

Under § 61.079(7)(a)2, a prenup can be invalidated if one party failed to provide fair and reasonable disclosure of their assets and liabilities, and the other party did not voluntarily waive the right to such disclosure or have independent knowledge of the finances. Hiding assets, undervaluing businesses, or failing to disclose significant debts are common bases for this challenge.

Ground 3: Unconscionability

Under § 61.079(7)(a), unconscionability at the time of execution — combined with a failure to meet the disclosure requirements — can render a prenup unenforceable. Unconscionability alone may not be sufficient; Florida courts typically require that the agreement be both unconscionable and tainted by inadequate disclosure. The landmark case Casto v. Casto, 508 So. 2d 330 (Fla. 1987), remains influential in defining how Florida courts assess fairness in marital agreements.

How Much Does a Prenup Cost in Florida?

The cost of a prenuptial agreement in Florida varies depending on the complexity of the parties’ financial situations, whether both parties retain separate counsel, and the extent of negotiation required. For a thorough breakdown, see our dedicated article on prenup costs in Florida.

Typical cost ranges in South Florida (2026):

• Simple prenup (limited assets, straightforward terms): $2,500 – $5,000 per party
• Moderate complexity (business interests, real estate, blended families): $5,000 – $10,000 per party
• High-net-worth or complex prenup (multiple businesses, international assets, trust structures): $10,000 – $25,000+ per party
• Prenup review only (reviewing an agreement drafted by the other party’s attorney): $1,500 – $5,000

These figures represent attorney fees for drafting or reviewing. Additional costs may include financial disclosure preparation, business valuations, or tax analysis. For more detail on review costs, visit our page on the cost to have a lawyer review a prenup in Florida.

The Prenup Process: Step by Step

Understanding what to expect makes the prenup process less intimidating. Here is the general timeline we follow at Pazos Law Group when working with clients on prenuptial agreements.

Step 1: Initial Consultation (6–12 Months Before Wedding)

We begin with a confidential meeting to understand your goals, assets, family situation, and concerns. This conversation shapes the entire agreement. Starting early is critical — the more time available, the stronger the enforceability of the final document.

Step 2: Financial Disclosure (Both Parties)

Each party prepares a complete financial disclosure, listing all assets, liabilities, income, and expenses. This step satisfies the disclosure requirement of § 61.079(7)(a)2 and protects the agreement from future challenges. We use sworn financial affidavits as standard practice.

Step 3: Drafting the Agreement

Based on your goals and the financial disclosures, we draft the prenuptial agreement. The initial draft addresses every relevant subject permitted under § 61.079(4), including property classification, alimony terms, debt allocation, and business protections.

Step 4: Review by the Other Party’s Attorney

The draft is sent to your fiancé(e)’s independent attorney for review and negotiation. This step is essential for enforceability. If your partner does not yet have an attorney, we encourage them to retain one immediately.

Step 5: Negotiation and Revisions

Most prenups go through two to four rounds of revisions. This is a normal and healthy part of the process. Both attorneys negotiate to reach terms that are fair, protective, and enforceable for both parties.

Step 6: Execution (At Least 30 Days Before Wedding)

Once both parties agree on the final terms, the agreement is signed before a notary public. We recommend execution at least 30 days before the wedding date to eliminate any argument of duress or coercion. Each party receives a fully executed original.

For a printable overview of this process, download our Florida prenuptial agreement checklist.

Prenups for Business Owners and Entrepreneurs

If you own a business, a prenuptial agreement is not optional — it is essential. Without one, Florida’s equitable distribution statute § 61.075 can expose your company to division in a divorce proceeding. This is true even if you started the business before the marriage.

Under § 61.075(6)(a)1.b, any increase in the value of a non-marital asset — including a business — that results from the efforts of either spouse during the marriage is classified as a marital asset subject to equitable distribution. This concept, known as “active appreciation,” means that your hard work growing your company during the marriage could entitle your spouse to a share of that growth.

A properly drafted prenup for a business owner should address:

• Classification of the business as non-marital property, including all future appreciation
• Treatment of business income during the marriage (salary vs. retained earnings vs. distributions)
• Valuation methodology if the business ever needs to be appraised
• Protection of intellectual property, patents, and trade secrets
• Provisions addressing what happens if the non-owner spouse contributes to the business
• Protection for co-founders and business partners who may have rights under operating agreements

Startup founders face unique challenges, including equity vesting, stock options, and future funding rounds. Visit our specialized page on prenups for startup founders and equity protection for guidance specific to venture-backed companies.

For high-net-worth individuals with multiple business interests, the prenup must also coordinate with existing operating agreements, partnership agreements, buy-sell provisions, and estate plans to ensure consistency across all documents.

Florida Prenups and Alimony

Alimony is one of the most significant financial issues in any Florida divorce, and it is one of the primary subjects that prenuptial agreements are designed to address. Under § 61.079(4)(a)4, a prenup may modify or eliminate spousal support entirely.

Florida’s alimony framework was substantially reformed by SB 1416, which took effect on July 1, 2023. The new law, codified in § 61.08, Fla. Stat., eliminated permanent alimony and established four types of alimony: temporary, bridge-the-gap, rehabilitative, and durational. Durational alimony is now capped at a percentage of the length of the marriage, and the statute includes specific formulas and presumptions that courts must follow.

These 2023 alimony reforms make prenuptial planning both more predictable and more important. A prenup can:

• Waive alimony entirely — both parties can agree that neither will seek spousal support
• Set a fixed alimony amount — specifying the dollar amount and duration in advance
• Create a formula — tying alimony to the length of the marriage, income levels, or other variables
• Limit the type of alimony — for example, allowing only bridge-the-gap or rehabilitative support
• Establish a sunset clause — eliminating alimony obligations if the marriage lasts beyond a specified number of years

Prenup vs. Postnup in Florida

A prenuptial agreement is executed before marriage; a postnuptial agreement is executed after the wedding. While both serve similar purposes, they are governed by different legal standards in Florida. For a full comparison, read our article on prenup vs. postnup in Florida.

Prenuptial agreements are governed by § 61.079, which provides a clear statutory framework including the enforceability standards discussed above. Postnuptial agreements, however, are not explicitly addressed by the Florida UPAA. Instead, they are governed by common law principles established in cases such as Casto v. Casto, 508 So. 2d 330 (Fla. 1987), and subsequent decisions.

The key differences between prenups and postnups in Florida include:

• Standard of review: Postnuptial agreements are generally subject to greater judicial scrutiny than prenups because spouses owe each other fiduciary duties that engaged individuals do not.
• Enforceability threshold: A postnup must be fair and reasonable both at the time of execution and at the time of enforcement, whereas a prenup is evaluated only at the time of signing.
• Consideration: A prenup requires only the marriage itself as consideration. A postnup requires separate consideration, which can be more difficult to establish.
• Practical timing: A postnup is appropriate when the parties failed to sign a prenup before marriage or when circumstances have changed substantially since the wedding.

In general, a prenuptial agreement offers stronger legal protections and greater predictability than a postnuptial agreement. If you are not yet married and are considering financial planning for your marriage, a prenup is almost always the better choice.

International Prenups and Florida Law

South Florida’s diverse population means that many engaged couples have international ties — foreign assets, dual citizenship, or a fiancé(e) who resides abroad. International prenups require careful attention to choice-of-law provisions and cross-border enforcement.

Under § 61.079(4)(a)7, a Florida prenuptial agreement may include a choice-of-law provision designating which jurisdiction’s law governs the agreement. This is particularly important when one or both parties own property in another country or may relocate after marriage.

Key considerations for international prenups include:

• Recognition abroad: Not all countries recognize prenuptial agreements. Civil law jurisdictions (common in Latin America and Europe) may have mandatory matrimonial property regimes that override prenuptial terms.
• Dual agreements: In some cases, it is advisable to execute a separate prenuptial agreement in each relevant jurisdiction to maximize enforceability.
• Foreign-signed prenups: A prenuptial agreement signed in another country can be enforceable in Florida, but it must still meet the requirements of § 61.079 if Florida law governs, including the writing, voluntariness, and disclosure requirements.
• Language considerations: If one party does not speak English fluently, providing a certified translation of the agreement strengthens its enforceability by negating claims that the party did not understand what they signed.
• Foreign assets: Accurately disclosing and valuing foreign assets can be complex, but failure to do so is a common basis for challenging enforcement under § 61.079(7)(a)2.

In our Coral Gables practice, attorney Nadia Pazos regularly works with clients who have significant international connections, particularly in Latin America, the Caribbean, and Europe. Understanding both Florida law and the legal frameworks of the relevant foreign jurisdictions is essential to drafting an effective international prenup.

Common Prenup Mistakes That Lead to Invalidity

Even with the best intentions, prenuptial agreements can fail if they are not drafted and executed properly. These are the most common mistakes we see in our practice — and the ones you should avoid at all costs.

Mistake 1: Waiting Until the Last Minute

Presenting a prenup days or even weeks before the wedding creates a voluntariness problem. Courts look at whether the signing party had meaningful time and opportunity to review the agreement, consult with an attorney, and negotiate changes. Last-minute agreements are the easiest to challenge under § 61.079(7)(a)1.

Mistake 2: Incomplete Financial Disclosure

Failing to provide full and accurate financial disclosure is the single most common reason prenups are invalidated. Under § 61.079(7)(a)2, even a small omission can undermine the entire agreement if the court finds the disclosure was not “fair and reasonable.” Every asset, every liability, every income source must be documented.

Mistake 3: Only One Attorney (or No Attorney)

When both parties use the same attorney — or one party has no attorney at all — the agreement is vulnerable. While Florida does not require each party to have independent counsel, the absence of separate representation significantly weakens enforceability and invites claims of overreaching.

Mistake 4: Using a Template or Online Form

Generic prenuptial agreement templates are not tailored to Florida law and often fail to include the specific provisions and disclosures required under § 61.079. A document that does not address the statutory requirements is a document waiting to be challenged.

Mistake 5: Including Unenforceable Provisions

Provisions addressing child custody, child support, or lifestyle requirements will not only be unenforceable themselves — they can also call the credibility and reasonableness of the entire agreement into question.

Mistake 6: Failing to Update After Major Life Changes

A prenup drafted ten years ago may not reflect current financial circumstances. While a prenup cannot be modified after marriage (it would become a postnuptial agreement), parties should consider whether a postnup is appropriate after significant life events such as the birth of a child, a major inheritance, or a dramatic change in income.

Mistake 7: Coercion, Pressure, or Ultimatums

Telling your partner “sign this or the wedding is off” creates a textbook duress argument. The prenup process should be collaborative and transparent, not adversarial. Both parties should feel they had the freedom to negotiate, seek counsel, and decline terms they found unacceptable.

Frequently Asked Questions About Florida Prenups

Below are answers to the questions we hear most often from clients considering a prenuptial agreement in Florida. For additional questions and answers, visit our comprehensive Florida prenup FAQ page.

Have more questions? See our expanded prenup FAQ covering 30+ additional topics.

Related Articles & Resources

Prenup Deep Dives

• What Should Be Included in a Florida Prenup?
• Can a Prenup Protect My Business in Florida?
• How Long Before the Wedding Should You Sign a Prenup?
• Florida Prenup Document Checklist
• Can a Prenup Waive Alimony in Florida?
• Can You Get a Prenup After Marriage in Florida?
• Are Online Prenup Templates Legal in Florida?
• What Happens If You Divorce Without a Prenup?
• Do Both Parties Need a Lawyer for a Florida Prenup?
• Florida Prenup Rules for Real Estate and Property

Statute & FAQ Guides

• Fla. Stat. § 61.079 — Complete Subsection-by-Subsection Guide
• Florida Prenup FAQ
• 30+ Additional Prenup Questions Answered