Healthcare billionaire Miguel "Mike" Fernandez, 73, filed for divorce from his wife Constance Tolevich Fernandez, 61, on April 16, 2026, in Miami-Dade County after 25 years of marriage and five children, according to AOL/People. The case hinges on a 2001 prenuptial agreement signed the day of their wedding that caps Constance's recovery at $1 million against Mike's estimated $1 billion fortune — a ratio of roughly 0.1%.
Key Facts
| Detail | Summary |
|---|---|
| What happened | Mike Fernandez filed for divorce, seeking enforcement of a 2001 wedding-day prenup limiting spousal recovery to $1 million |
| When | Petition filed April 16, 2026; first enforceability hearing scheduled June 2026 |
| Where | Miami-Dade County, Florida (marital home in Coral Gables) |
| Who's affected | Mike Fernandez (chairman, MBF Healthcare Partners), Constance Tolevich Fernandez, and five children |
| Key statute | Fla. Stat. § 61.079 — Florida's Uniform Premarital Agreement Act |
| Practical impact | Tests how Florida courts treat "pop-up" wedding-day prenups when one spouse's fortune grows from millions to nearly $1 billion during a 25-year marriage |
Why this matters legally
The Fernandez case will become a reference point for every Florida attorney drafting or challenging a prenuptial agreement for a high-net-worth client. Florida courts enforce prenups under Fla. Stat. § 61.079, the state's adoption of the Uniform Premarital Agreement Act effective October 1, 2007. Under that statute, a prenuptial agreement is unenforceable only if the challenging spouse proves one of three grounds: (1) the agreement was not signed voluntarily; (2) it was the product of fraud, duress, coercion, or overreaching; or (3) before signing, the challenging spouse was not provided a fair and reasonable disclosure of the other party's property and financial obligations and did not voluntarily waive that disclosure in writing.
The burden sits squarely on Constance's legal team. Florida courts do not void a prenup simply because it produces a lopsided outcome — a $1 million recovery against a $1 billion estate is not, on its face, unconscionable under Florida law. The Florida Supreme Court in Casto v. Casto, 508 So. 2d 330 (Fla. 1987), established that unfairness alone is not enough. The challenger must show unfairness combined with either nondisclosure, concealment, duress, coercion, or lack of knowledge of the other party's finances at signing.
How Florida law handles wedding-day prenups
Florida law does not automatically invalidate a prenup signed on the wedding day, but the timing creates a factual record that courts examine closely. A "pop-up" prenup presented hours before the ceremony raises three red flags Florida judges weigh under Fla. Stat. § 61.079(7): whether the signing spouse had independent legal counsel, whether meaningful financial disclosure occurred, and whether the circumstances amounted to coercion.
In Lashkajani v. Lashkajani, 911 So. 2d 1154 (Fla. 2005), the Florida Supreme Court upheld a prenup signed two days before the wedding where the challenging spouse had counsel and received disclosure. Conversely, in Francavilla v. Francavilla, 969 So. 2d 522 (Fla. 4th DCA 2007), an appellate court struck down a prenup where the bride signed without counsel under emotional pressure moments before walking down the aisle.
Constance's challenge will likely focus on four factual questions: whether she had independent Florida counsel in 2001, whether Mike provided a written schedule of assets and income at signing, whether she understood she was waiving equitable distribution of a business that was then valued at a fraction of today's $1 billion, and whether being presented with the agreement on her wedding day constituted duress under Florida law. The June 2026 hearing will likely address these factual predicates before any trial on the merits.
How Florida courts divide a $1 billion estate without a prenup
If the 2001 prenup fails, Florida's equitable distribution statute, Fla. Stat. § 61.075, governs. Florida is an equitable distribution state, not a community property state — meaning marital assets are divided fairly, which the statute presumes to mean equally unless a party proves otherwise. The statute identifies 10 factors courts weigh, including the duration of the marriage (25 years qualifies as a long-term marriage under Florida case law), contribution to the marriage as homemaker or parent, and intentional dissipation of marital assets within the two years preceding filing.
Critically, Florida distinguishes between marital and nonmarital property. Assets Mike owned before the 2001 marriage remain his separate property. But any appreciation in his premarital business attributable to marital labor or marital funds becomes marital property under Fla. Stat. § 61.075(6)(a)(1)(b). Given that Mike built MBF Healthcare Partners during the marriage, a substantial portion of the $1 billion estate could qualify as marital property subject to 50/50 division — which is why the stakes of the prenup fight are so high.
The disputed assets, including the Coral Gables waterfront estate and approximately $6.4 million in jewelry, will also be categorized. Jewelry gifted between spouses during the marriage is typically treated as marital property in Florida under Fischer v. Fischer, 813 So. 2d 258 (Fla. 4th DCA 2002).
Practical takeaways for Florida residents considering a prenup
- Present the draft at least 30 days before the wedding. Florida courts give significantly more weight to voluntariness when the signing spouse had time to review and negotiate. Same-day signings invite challenge.
- Ensure both parties have independent Florida counsel. An unrepresented spouse is the single biggest factor courts cite when voiding prenups under Fla. Stat. § 61.079.
- Attach a complete schedule of assets, debts, and income. Florida requires "fair and reasonable disclosure" — omit a significant asset and the entire agreement can fall.
- Address appreciation of separate property. A prenup that cleanly waives equitable distribution must specifically address active appreciation of premarital businesses, or courts may still apply § 61.075(6).
- Update the agreement every 5–10 years through a postnuptial amendment. A 2001 prenup drafted when an estate was $5 million looks very different when the estate reaches $1 billion in 2026 — courts may find the gap unconscionable.
- Video-record the signing. High-net-worth Florida attorneys increasingly preserve a video record of both spouses acknowledging voluntariness, representation, and disclosure — powerful evidence at an enforceability hearing.
Frequently Asked Questions
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If you are negotiating, signing, or challenging a prenuptial agreement in Florida, the timing, disclosure, and counsel decisions you make now will shape every outcome later. Our directory lists exclusive family law attorneys in every Florida county who handle high-asset prenup matters.
This article discusses recent news and provides general legal commentary. It does not constitute legal advice. Every case is unique. Consult a qualified family law attorney for advice specific to your situation.