Marrying at 55 With a 401(k): What a Florida Prenup Can and Cannot Do for Retirement Accounts

By Nadia Pazos, Family Law Attorney, Pazos Law Group · Updated September 13, 2026

Some couples marry before the saving starts. The clients this page describes marry after it is largely done: a 401(k) built over a career, an IRA rolled over from an old employer, a pension already earned, military retired pay after twenty years of service. A Florida premarital agreement can settle, between the two of you, what stays separate — and there is exactly one waiver that federal law refuses to let it make.

The Accounts You Bring to a Later Marriage

Name the accounts, not the category. The situations that walk in the door: a 55-year-old marrying for the second time with a 401(k) as the largest single asset; a physician with a 403(b) and a defined-benefit hospital pension; a couple in their sixties, each with traditional and Roth IRAs, neither of whom intends to leave those accounts to the other’s adult children; a retired officer whose military retired pay is already in pay status. Each vehicle sits under different documents — plan documents, custodial agreements, federal statutes — and a prenup that treats “retirement” as one line item answers none of them.

Florida’s divorce statute is categorical about what happens without an agreement. § 61.076(1) provides:

“All vested and nonvested benefits, rights, and funds accrued during the marriage in retirement, pension, profit-sharing, annuity, deferred compensation, and insurance plans and programs are marital assets subject to equitable distribution.” — Fla. Stat. § 61.076(1)

Note the two limiting words — accrued and during the marriage — and note that the statute reaches nonvested benefits and names six plan types. Marry at 55 and work another decade, and a decade of contributions, employer match, and growth lands inside that sentence. How a court then divides accounts between marital and nonmarital portions is governed by the equitable-distribution rules of Fla. Stat. § 61.075 — a tracing exercise a written agreement exists to make unnecessary. Without one, the account statement from the month before the wedding becomes the most important document in the case, decades after anyone thought to keep it.

What the Agreement Itself Can Settle

Florida’s premarital-agreement statute, § 61.079, enumerates eight permitted subjects at § 61.079(4)(a)1.–8. For a couple marrying with retirement savings, five of them do the work: the parties’ rights in property whenever and wherever acquired (item 1.), the right to manage and dispose of it (item 2.), the disposition of property on separation, dissolution, or death (item 3.), the making of a will or trust to carry out the agreement (item 5.), and ownership rights in and disposition of a life-insurance death benefit (item 6.). Item 7. permits a choice of governing law, and item 8. is a catch-all for any other matter not against public policy or a criminal statute. The single subject placed off limits is at § 61.079(4)(b): a child’s right to support may not be adversely affected.

Two further points matter to a saver. First, § 61.079(2) defines “property” to expressly include income and earnings, both active and passive — so the agreement can speak not only to the account but to what the account produces. Second, an agreement can fix the pre-marriage balance by stipulated figure rather than leaving a decades-old statement to be reconstructed, and can address non-qualified deferred compensation and unvested awards that no plan administrator will ever segregate for you.

The formalities are lighter than most clients expect. Under § 61.079(3), a premarital agreement must be in writing and signed by both parties — the section requires no notary and no witnesses. And § 61.079 sets no minimum time before the wedding: there is no signing deadline, though timing bears on voluntariness under § 61.079(7)(a)1. rather than on validity as a formality.

The Waiver Federal Law Reserves for a Spouse

Everything above is Florida law. The largest single exception to it is federal, it is written down in plain terms, and most premarital agreements never mention it.

Where a retirement plan is governed by I.R.C. §§ 401(a)(11) and 417 — the qualified joint and survivor annuity and preretirement survivor annuity rules — the participant cannot waive the survivor benefit without the spouse’s consent. The Treasury regulation asks the exact question a prenup raises, and answers it:

Q-28: Does consent contained in an antenuptial agreement or similar contract entered into prior to marriage satisfy the consent requirements of sections 401(a)(11) and 417?

A-28: No. An agreement entered into prior to marriage does not satisfy the applicable consent requirements, even if the agreement is executed within the applicable election period.

26 C.F.R. § 1.401(a)-20, Q&A-28

The reason is structural rather than technical. The consent has to come from a spouse, and on the day the premarital agreement is signed there is no spouse — there is a fiancée. The same regulation makes the point again at Q&A-29: a consent given by one spouse “is binding only with respect to the consenting spouse.”

So a Florida premarital agreement can allocate the account balance between the two of you, and § 61.076(1) governs how much of it is marital — but it cannot, on its own, strip the survivor benefit out of a plan that carries one. What works is a two-step: the agreement records the bargain and adds a covenant to sign the plan’s own spousal consent form after the wedding, and then that form is actually signed, witnessed as the plan requires, and filed with the administrator. An agreement that stops at step one leaves the largest asset on the list only half-handled.

This is also why “retirement accounts” is not one category. The consent rule above attaches to plans governed by §§ 401(a)(11) and 417; it is not the rule for every vehicle a client calls a retirement account. Which plan documents govern which account is the first question worth answering, before any language is drafted.

The Sequence, Step by Step

Handled correctly, the retirement provisions of a prenup for a later-in-life marriage run on a timeline, not a single signature:

1. Before the wedding — the premarital agreement is signed under § 61.079(3): in writing, both signatures. It records the bargain over each account and includes each party’s covenant to execute the plan’s own spousal-consent paperwork after the marriage.
2. The wedding — only now does a “spouse” exist who is capable of giving the consent the federal rules require.
3. After the wedding — the spouse signs the plan’s own consent or waiver form, not a restatement of the prenup.
4. Witnessing — the form is witnessed in whatever manner the plan itself requires.
5. Filing — the executed form is delivered to the plan administrator, and a copy is kept with the agreement.

Put differently, the division of labor looks like this. The prenup can: allocate each account between the spouses as property; fix the pre-marriage balance by a stipulated figure; address contributions, match, and growth during the marriage; contract about a life-insurance death benefit under § 61.079(4)(a)6.; select governing law under § 61.079(4)(a)7.; and bind each party to sign the post-wedding paperwork. The plan’s own waiver alone can: satisfy the spousal-consent requirements of I.R.C. §§ 401(a)(11) and 417 for a plan those sections govern. Neither document substitutes for the other.

Military Retired Pay Is Its Own System

Marrying a service member or a military retiree adds a federal statute of its own, and the most-repeated “rule” about it is routinely misstated. The so-called 10/10 rule, 10 U.S.C. § 1408(d)(2), is a rule about who pays: the government will not make direct payments to a former spouse unless the marriage lasted 10 years or more during which the member performed at least 10 years of creditable service. It is not a rule about entitlement to a share — a shorter marriage does not, by that section, mean no share; it means no direct-pay mechanism.

The same statute caps what court orders can reach: no more than 50 percent of disposable retired pay under all court orders together (§ 1408(e)(1)), rising to 65 percent where those orders combine with legal process under section 459 of the Social Security Act (§ 1408(e)(4)(B)). A premarital agreement can address retired pay as property between the spouses within that federal frame; the frame itself is not negotiable. For the fuller treatment, see our page on military prenuptial agreements in Florida.

Marrying Later in Life: The Rights That Attach at Death

A later marriage is often also an estate-planning event — each spouse with adult children, each intending certain accounts to pass to them. Florida gives a surviving spouse an elective share of 30 percent of the elective estate under § 732.2065, and that right exists whether or not a will says otherwise. A premarital agreement can waive it — § 61.079(4)(a)3. reaches disposition of property at death — but the waiver of spousal death rights carries its own formality: under § 732.702(1), it must be signed in the presence of two subscribing witnesses — a stricter requirement than § 61.079(3) imposes on the prenup generally, and the reason a retirement-heavy prenup is executed with witnesses even though the family statute does not ask for them.

One asymmetry in § 732.702 favors doing this before the wedding rather than after. Section 732.702(2) provides that “no disclosure shall be required for an agreement, contract, or waiver executed before marriage” — while the same waiver executed after marriage does require fair disclosure. The death-time waiver, the will or trust contemplated by § 61.079(4)(a)5., and the plan-level survivor waiver described above are three separate instruments doing three separate jobs; a complete agreement accounts for all three.

If Circumstances Change After the Wedding

Nothing here is carved in stone. Under § 61.079(6), after the marriage the agreement may be amended, revoked, or abandoned only by a written agreement signed by both parties — the mechanism to use when an account is rolled over, a pension election is made, or the couple simply changes its mind. And § 61.079(9) tolls any statute of limitations applicable to a claim under the agreement during the marriage, so rights under it do not quietly expire while the couple stays married.

Frequently Asked Questions

Official Sources & Related Reading

• Fla. Stat. § 61.079, Premarital agreements — official text (Online Sunshine)
• Fla. Stat. § 61.076, Distribution of retirement plans upon dissolution — official text
• Fla. Stat. § 61.075, Equitable distribution — official text
• Fla. Stat. § 732.702, Waiver of spousal rights — official text
• Fla. Stat. § 732.2065, Amount of the elective share — official text
• 26 C.F.R. § 1.401(a)-20, Q&A-28 and Q&A-29 (Cornell LII)
• 10 U.S.C. § 1408, Payment of retired or retainer pay in compliance with court orders
• Dividing Retirement Accounts and Pensions in a Florida Divorce — the divorce-side counterpart of this page
• Military Prenuptial Agreements in Florida
• High-Net-Worth Prenuptial Agreements in Florida
• Draft a Florida Prenup
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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. Federal retirement-plan, tax, and military-pay rules are fact-specific; consult counsel and the plan administrator about your specific plans. Florida law and the application of statutes change over time; please consult a licensed Florida attorney about your specific situation.