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Pazos Law Group Prenups · Divorce · Family Law

Florida Prenups for Foreign Nationals and K-1 Fiancé(e) Visa Couples (2026)

By Nadia Pazos, Family Law Attorney, Pazos Law Group · Updated

Fla. Stat. § 61.079 asks for a writing and two signatures — not a passport. But international couples face three problems a domestic couple never sees: the K-1 visa’s 90-day marriage clock, the federal I-864 support obligation that no prenup can reliably waive, and a voluntariness analysis that gets harder when one signer is negotiating in a second language, far from home.

Quick Answer

Can a foreign national sign a Florida prenup — and should a K-1 couple get one?

Yes and yes. § 61.079(3) requires only a writing signed by both parties — no citizenship, green card, or residency requirement exists. For K-1 couples, the 90-day marriage window of 8 U.S.C. § 1184(d) makes early signing essential, and the I-864 Affidavit of Support (8 U.S.C. § 1183a) survives any prenup waiver — the Ninth Circuit enforced it over a prenup in Erler v. Erler, 824 F.3d 1173 (9th Cir. 2016).

No Citizenship or Residency Requirement in § 61.079

The formalities subsection of Fla. Stat. § 61.079 is two sentences: “A premarital agreement must be in writing and signed by both parties. It is enforceable without consideration other than the marriage itself.” (§ 61.079(3)). It does not require U.S. citizenship, lawful permanent residence, any particular visa, a Social Security number, or physical presence in Florida — the signer can be in Bogotá, Caracas, São Paulo or Manila. See our companion page on signing outside Florida.

What the statute does demand is what it demands of everyone: voluntary execution, no fraud, duress, coercion or overreaching, and — if the agreement was unconscionable when made — fair and reasonable financial disclosure. § 61.079(7)(a). Each of those requirements has an international twist, covered below.

The K-1 Problem: a 90-Day Clock Running Against Voluntariness

A K-1 fiancé(e) visa admits a foreign national to the United States on the condition of marrying the petitioning U.S. citizen within 90 days of admission. 8 U.S.C. § 1184(d). If the marriage does not happen, the K-1 holder must depart; there is no extension.

Now put a prenup inside that window. An agreement first presented in week ten — to a fiancé(e) who has quit a job, given up a lease, and crossed an ocean, and who faces departure if the wedding is called off — is close to a law-school hypothetical on duress and overreaching under § 61.079(7)(a) and Casto v. Casto, 508 So. 2d 330 (Fla. 1987). The imbalance of leverage is structural: one party’s ability to remain in the country depends on the other’s willingness to proceed.

The fix is sequencing:

  • Best: negotiate and sign before the fiancé(e) travels — § 61.079 imposes no requirement that signing occur in the U.S.
  • Good: sign in the first weeks after arrival, leaving real time before the wedding date.
  • Risky: a draft that first appears days before the ceremony, late in the 90-day window.

The I-864 Affidavit of Support: the Clause a Prenup Cannot Erase

When the marriage leads to a green-card application, the U.S.-citizen spouse ordinarily signs Form I-864, a contract with the federal government promising to maintain the immigrant at 125% of the federal poverty guidelines. The obligation is statutory — 8 U.S.C. § 1183a — and the sponsored immigrant can sue to enforce it. It ends only on the events listed in the statute (such as naturalization, 40 quarters of work, departure with abandonment of residence, or death) — divorce is not on the list.

In Erler v. Erler, 824 F.3d 1173 (9th Cir. 2016), the couple’s premarital agreement waived all spousal support; after the divorce, the Ninth Circuit nonetheless held the sponsor liable on the I-864. A Florida prenup that purports to waive I-864 support is, on this authority, making a promise the sponsor cannot count on.

Good drafting treats the two systems separately: the prenup governs Florida rights — equitable distribution, alimony under state law, elective share — while acknowledging that any federal I-864 obligation stands on its own. That honesty also protects the agreement itself from an unconscionability attack.

Language, Translation, and Understanding What You Sign

Nothing in § 61.079 requires the agreement to be in the signer’s native language. But voluntariness (§ 61.079(7)(a)1.) and overreaching (Casto) are judged by real-world understanding. An agreement in dense English legalese, signed quickly by someone who negotiates life in Spanish or Portuguese, hands that signer a ready-made challenge.

Practical protections that also make the agreement fairer:

  • A professional written translation of the full agreement and the disclosure schedules;
  • Independent counsel for the foreign fiancé(e) — ideally bilingual, so advice is given in the language the client actually thinks in;
  • Time. Weeks, not days, between first draft and signature;
  • A recital — true, not boilerplate — describing the translation provided and counsel consulted.

Pazos Law Group practices in English and Spanish; agreements and consultations are available in both.

Disclosing Assets Across Borders (§ 61.079(7)(a)2.)

Unconscionability becomes a defense only when paired with the absence of “fair and reasonable disclosure of the property or financial obligations” of the other party, no written waiver of disclosure, and no reasonable ability to have known the missing information. § 61.079(7)(a)2. The statute draws no line at the water’s edge: the apartment in Buenos Aires, the family company in Caracas, the account in Madrid all belong on the schedules, reasonably valued, with key documents translated. Cross-border omissions are exactly the kind of gap a set-aside motion is built on years later.

Foreign Assets, Choice of Law, and Mirror Agreements

§ 61.079(4)(a) lets the parties contract about property “whenever and wherever acquired or located,” and § 61.079(4)(a)7. authorizes a choice-of-law clause. A Florida court will apply that framework. A court in the couple’s other country will not be bound by it, and civil-law jurisdictions often run marital property through notarial regimes rather than common-law contracts. Where either spouse keeps citizenship, real estate, or realistic return plans abroad, coordinated local-counsel advice — sometimes a mirror agreement or regime election — is the complete answer. See our page on foreign prenups in Florida for the reverse problem, and marrying abroad if the wedding itself is overseas.

Death-Time Rights: the Two-Witness Rule

Most international couples also waive death-time rights — the elective share, intestate share, homestead, exempt property and family allowance. § 61.079(10) preserves the formalities of § 732.702 for those waivers, and § 732.702(1) requires signing “in the presence of two subscribing witnesses.” Sign with two witnesses and a notary — wherever in the world the signing happens — and every clause satisfies every formality.

International-Couple Prenup Checklist

  1. Start early — before the K-1 fiancé(e) travels, or immediately after arrival (8 U.S.C. § 1184(d)).
  2. Full disclosure of worldwide assets, translated and documented (§ 61.079(7)(a)2.).
  3. Professional translation of the agreement into the foreign fiancé(e)’s language.
  4. Independent — ideally bilingual — counsel for each party.
  5. Draft around the I-864, never against it (8 U.S.C. § 1183a; Erler).
  6. Florida choice-of-law clause (§ 61.079(4)(a)7.); consider mirror advice in the other country.
  7. Two witnesses plus notary at signing (§ 732.702 formalities).

Frequently Asked Questions

Can a non-U.S. citizen sign a Florida prenuptial agreement?

Yes. Fla. Stat. § 61.079(3) requires only that a premarital agreement be in writing and signed by both parties. Nothing in § 61.079 requires U.S. citizenship, a green card, a Social Security number, or Florida residency. A foreign national on any visa — or abroad and not yet in the United States — can sign.

When should a K-1 couple sign the prenup?

Before the foreign fiancé(e) travels, if possible. A K-1 visa holder must marry the petitioning U.S. citizen within 90 days of admission (8 U.S.C. § 1184(d)). Signing early — ideally while both parties still have time to negotiate, translate, and consult independent counsel — is the best protection against a later claim of duress or overreaching under § 61.079(7)(a).

Can a prenup waive the I-864 Affidavit of Support obligation?

No reliable waiver exists. The I-864 is a contract with the federal government under 8 U.S.C. § 1183a, enforceable by the sponsored immigrant. In Erler v. Erler, 824 F.3d 1173 (9th Cir. 2016), the Ninth Circuit enforced a sponsor's I-864 support obligation after divorce even though the couple's premarital agreement waived all spousal support. A Florida prenup should be drafted around the I-864, not against it.

Does the prenup need to be translated?

Florida law does not require it, but enforcement does in practice. Voluntariness under § 61.079(7)(a)1. and the overreaching analysis of Casto v. Casto turn on whether the signer understood what they signed. If one party's primary language is Spanish, Portuguese, or anything other than English, a professional translation — and a bilingual reviewing attorney — removes the strongest set-aside argument they would otherwise have.

Does marrying a U.S. citizen give the foreign spouse rights a prenup cannot change?

Two systems apply. Florida marital rights — equitable distribution, alimony, elective share — can largely be modified by agreement under § 61.079(4). The federal I-864 support obligation under 8 U.S.C. § 1183a cannot be reliably waived by prenup (Erler). Immigration status itself is federal and unaffected by the prenup.

What if my fiancé(e)'s assets are all in another country?

Disclose them anyway. Enforceability under § 61.079(7)(a)2. depends on fair and reasonable disclosure of property and financial obligations — wherever located. Foreign real estate, businesses, and accounts belong on the disclosure schedules, valued as best they reasonably can be, with supporting documents translated.

Will a Florida prenup be enforced in my home country?

Not automatically. A Florida choice-of-law clause (§ 61.079(4)(a)7.) binds Florida courts; a foreign court applies its own conflict-of-laws rules, and many civil-law countries use notarial marital-property regimes instead. Couples with significant ties to another country often pair the Florida prenup with advice from counsel there, and sometimes a mirror agreement or regime election.

Official Sources & Related Reading

The information on this page is for general informational purposes only and does not constitute legal advice, and it does not address the law of any state or country other than Florida except as expressly noted. Reading or sharing this content does not create an attorney-client relationship with Pazos Law Group. Immigration law is federal and highly fact-specific; consult an immigration attorney about visa matters. Florida law and the application of statutes change over time; please consult a licensed Florida attorney about your specific situation, and counsel licensed in any other state or country whose law may apply.