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Prenuptial Agreements in Florida: A Strategic Guide to Protecting Your Legacy

WRITTEN BY:
aaugusto
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A business owner in Miami is preparing to get married. Over the past decade, he has built a successful company, acquired investment properties, and begun thinking seriously about long term wealth preservation. Like many professionals, he assumes a prenuptial agreement is only necessary in the event of divorce, or worse, that bringing it up could create unnecessary tension.

In reality, failing to plan ahead may expose those assets to significant risk. 

For many couples, the mention of a prenuptial agreement or “prenup” brings to mind high-conflict divorce scenarios. In reality, a well-drafted Florida prenuptial agreement is one of the most effective tools for protecting wealth, preserving family assets, and avoiding costly disputes down the road.

At Augusto Law, we work with professionals, business owners, and families across Florida to design prenuptial agreements that go far beyond the basics. Whether the goal is to protect a closely held business, real estate investments, or preserve generational wealth, we approach each agreement as part of a broader asset protection and estate planning strategy, not just as a formality before marriage. This proactive approach allows our clients to enter marriage with confidence, knowing their financial futures are clearly defined and protected.

A prenuptial agreement is a legally binding contract entered into before marriage that determines how assets, debts, income, and spousal support will be handled in the event of divorce or death. When properly structured, it eliminates uncertainty, reduces the risk of litigation, and gives both parties a clear financial framework moving forward.

What Is a Prenuptial Agreement Under Florida Law?

Without a prenup, Florida courts divide marital assets under Fla. Stat. § 61.075, the state’s equitable distribution statute. Florida is not a community property state, which means assets are not automatically split 50/50. While courts often begin with an equal division, judges may deviate based on a range of statutory factors.

In practical terms, this means that without a prenup, you are leaving critical financial decisions, often involving significant assets, to judicial discretion.

Generally:

  • Assets acquired during the marriage are presumed marital, regardless of whose name they are in. This can include income, real estate, retirement accounts, and business interests.
  • Premarital assets are considered separate, but that protection can be lost if those assets are commingled or increase in value, meaning actively appreciated, through marital efforts or funds, an issue that frequently arises with businesses and investment properties

A customized prenuptial agreement allows you to:

  • Protect appreciation of a premarital business.
  • Preserve rental income as separate property.
  • Shield family inheritances.
  • Clarify debt allocation.

Florida’s Default Rule: Equitable Distribution

Without a prenup, Florida courts divide marital assets under Fla. Stat. § 61.075, the state’s equitable distribution statute. Florida is not a community property state, which means assets are not automatically split 50/50. While courts often begin with an equal division, judges may deviate based on a range of statutory factors.

In practical terms, this means that without a prenup, you are leaving critical financial decisions, often involving significant assets, to judicial discretion.

Generally:

  • Assets acquired during the marriage are presumed marital, regardless of whose name they are in. This can include income, real estate, retirement accounts, and business interests.
  • Premarital assets are considered separate, but that protection can be lost if those assets are commingled or increase in value, meaning actively appreciated, through marital efforts or funds, an issue that frequently arises with businesses and investment properties

A customized prenuptial agreement allows you to:

  • Protect appreciation of a premarital business.
  • Preserve rental income as separate property.
  • Shield family inheritances.
  • Clarify debt allocation.

Prenuptial vs. Postnuptial Agreements in Florida

A prenuptial agreement is signed before marriage, while a  postnuptial agreement is executed after the couple is already married.

While both can be effective tools, postnuptial agreements face heightened scrutiny under Florida law. This is because spouses owe fiduciary duties to one another, meaning Florida courts are more cautious when evaluating agreements entered into during the marriage.  

In Florida courts analyze these agreements under standards established in cases such as Casto v. Casto and Belcher v. Belcher, which focused heavily on full disclosure and the overall equity of the agreement at the time it was signed.

For this reason, timing and proper structure are important. Whenever possible, addressing these issues before marriage through a well drafted prenuptial agreement provides greater certainty and enforceability. 

What Can Be Included in a Florida Prenup?

Under the UPAA (Fla. Stat. § 61.079), couples may address:

Common Provisions

  • Waiver or limitation of alimony (subject to statutory limitations)
  • Identification of separate property
  • Division of marital assets
  • Allocation of premarital debts
  • Estate rights and elective share waivers
  • Homestead rights (must meet deed formalities)
  • Waiver or limitation of attorney’s fees

Provisions That Are Not Enforceable

  • Waiver of child support
  • Predetermined child custody or timesharing
  • Clauses that encourage divorce
  • Illegal or public policy violations

What Makes a Prenup Enforceable in Florida?

To be enforceable, a Florida prenuptial agreement must:

  1. Be in writing
  2. Be signed by both parties
  3. Be executed voluntarily
  4. Include fair and reasonable financial disclosure (unless properly waived) 

Under Fla. Stat. § 61.079(7), a prenuptial agreement may be invalidated if certain legal requirements are not met. While these agreements are generally enforceable, challenges often arise when they are not carefully prepared or properly executed.

Courts may set aside an agreement in the following circumstances:

1. Lack of Voluntary Consent

If one of the parties signing the agreement was pressured, rushed, under duress or coercion, particularly close to the wedding date, the agreement may be voided.

2. Fraud or Concealment

Intentional misrepresentation or hiding significant assets, liabilities, or income, by a party can invalidate the contract.

3. Unconscionability + Lack of Disclosure

Florida courts apply a two-part test. The agreement must be both:

  • Grossly unfair , and
  • Entered without adequate disclosure or financial knowledge.

Importantly, an agreement that appears one-sided is not automatically invalid if both parties had full knowledge of the financial circumstances.

4. Improper Execution

Certain waivers—such as homestead rights under Article X, § 4 of the Florida Constitution, must comply with strict execution requirements, including proper witnesses and proper acknowledgment, similar to a deed.

These challenges highlight a key point: the enforceability of a prenuptial agreement often depends on how it is drafted, disclosed, and executed at the outset, not when it is later challenged.

At Augusto Law, we structure prenuptial agreements with these litigation risks in mind, ensuring that each agreement is designed to withstand scrutiny if ever tested in court.

Can a Prenup Be Modified After Marriage?

Yes. Under Fla. Stat. § 61.079(6), prenuptial agreements may be amended or revoked at any time after marriage, provided the modification is:

  • In writing, and
  • Signed by both spouses

However, once a couple is married, any changes are subject to greater legal scrutiny, making proper drafting and documentation even more important.

Common Reasons Clients Update Agreements

Clients often revisit their agreements as their financial circumstances evolve, including:

  • Significant business growth or ownership changes
  • Acquisition of new real estate or new investment assets
  • Birth of children
  • Estate planning revisions
  • Changes in Florida alimony law

Notably, Florida’s 2023 alimony reform eliminated permanent alimony and modified durational limits under Fla. Stat. § 61.08, making some older provisions outdated.

Strategic Benefits of a Prenuptial Agreement

When properly structured, a prenuptial agreement does more than address divorce, it creates a clear financial framework for the marriage itself.

A well drafted agreement can:

  • Protect closely held businesses from division or disruption
  • Preserve family and generational wealth
  • Minimize the risk of costly and time consuming litigation
  • Establish clear financial expectations between spouses
  • Reduce uncertainty and emotional stress in the event of divorce
  • Coordinate with estate planning strategies

For entrepreneurs, physicians, executives, and individuals entering second marriages, a prenup is not only precautionary , it is a key component of long-term financial planning.

Why Choose Augusto Law for Your Florida Prenup?

At Augusto Law, prenuptial agreements are not treated as standalone documents, they are developed as part of  a broader asset protection and legacy planning strategy. 

Our approach includes:

  • Detailed financial disclosure protocols
  • Business valuation considerations
  • Estate planning integration
  • Litigation-resistant drafting
  • High-net-worth asset protection

We do not rely on generic templates or one-size-fits-all solutions. Each agreement is carefully customized to reflect the client’s assets, risks, and  long-term goals.

Schedule a Confidential Consultation

If you are planning to marry, or your financial circumstances have changed, and want to protect your assets, business, or future inheritance, contact Augusto Law today. A proactive strategy today can prevent costly litigation in the future.

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Written By aaugusto

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The Law Office of Ana C. Augusto provides a variety of professional legal services to women and men in Miami, Hialeah, Homestead, Monroe, and Broward. Ana C. Augusto is fluent in Spanish and has a working knowledge of Portuguese.