Retirement accounts are often the largest asset a couple brings into a marriage — yet they're also the most legally complicated to address in a prenup. Most articles about prenup retirement accounts stop at "you can protect your 401(k)." They don't explain why a simple clause in your agreement may not be enough, or how the SECURE Act and its successor, SECURE 2.0, changed the landscape for beneficiary planning. If you're entering marriage with a 401(k), pension, IRA, or Roth account — or if you're marrying someone who has one — understanding how prenup retirement accounts interact with federal law is essential before you sign anything.
Why Retirement Accounts Are Different From Other Assets
When couples draft a prenup, they typically think about real estate, business interests, or savings accounts. What assets can a prenup protect? is a reasonable starting question — but retirement accounts deserve their own conversation, because they operate under a separate legal regime that state family law cannot simply override.
The Employee Retirement Income Security Act of 1974 (ERISA) is a federal law that sets minimum standards for most voluntarily established retirement and health plans in private industry. Because ERISA is federal law, it sits above state marital property rules. That creates a fundamental tension: your prenup is a creature of state contract law, but your 401(k) or pension is governed by federal statute.
It is also worth noting that not all retirement accounts are ERISA-covered. IRAs — traditional, Roth, SEP, and SIMPLE — are not subject to ERISA. That distinction matters enormously for how you draft your prenup and for what spousal protections apply by default. Importantly, however, community property states can impose spousal rights on IRAs through state law, and some states require spousal consent for IRA beneficiary designations. This means IRA owners in Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, and Wisconsin should not assume their IRAs are entirely free of spousal claims simply because ERISA does not apply.
The ERISA Spousal Rights Problem — And How It Differs by Plan Type
Here is the core issue that trips up couples — and sometimes their attorneys. ERISA requires that, when someone is married, their employer retirement plan benefits must be paid to their surviving spouse unless that spouse signs a written waiver, witnessed by a notary public or plan representative, that names an alternate beneficiary.
The critical catch: a prenup cannot satisfy those requirements, because the parties signing it are not yet married. As Treas. Reg. § 1.401(a)-20, Q&A-28 states directly: an agreement entered into prior to marriage does not satisfy the applicable consent requirements of IRC sections 401(a)(11) and 417, even if the agreement is executed within the applicable election period.
It is important to understand, however, that ERISA's spousal consent rules operate differently depending on the type of plan involved:
- Defined benefit pension plans must provide benefits in the form of a Qualified Joint and Survivor Annuity (QJSA) unless the spouse consents in writing to a different form of payment. The spousal waiver here relates to the form of the benefit — the survivor annuity — not just the beneficiary designation.
- Defined contribution plans (401(k), 403(b) plans of private employers) must pay the account balance to the surviving spouse as a death benefit unless the spouse consents to an alternate beneficiary. The mechanics differ from the pension context, but the requirement for a post-marriage written, notarized spousal consent is the same.
This is not a technicality that courts routinely overlook. In one widely cited case, a man signed a prenup in which each party waived claims to the other's retirement accounts. When he died, his employer plan paid his widow over $500,000 — despite the prenup — because ERISA obligates a plan to pay benefits to the surviving spouse absent a qualifying post-marriage waiver. A prenuptial agreement signed before the wedding, no matter how carefully worded, cannot substitute for that consent.
What You Can Do: The Prenup-Plus-Postnup Strategy
The good news is that a well-drafted prenup covering retirement accounts can still set the stage for the outcome you want — it just needs to be paired with action taken after the wedding. The legally sound approach is a two-step structure:
Step one — prenup commitment: The agreement should include a provision stating that, immediately upon marriage, each spouse will execute a valid ERISA spousal waiver in their new legal capacity as a spouse. The prenup should also include consideration for that promise and specify that failure to execute the post-wedding waiver constitutes a breach of the agreement.
Step two — post-wedding execution: Immediately after the ceremony, each spouse signs the plan's required spousal consent form, properly witnessed or notarized, naming the agreed alternate beneficiary. This is the step that actually binds the plan.
To make this concrete, a prenup clause addressing an ERISA plan might read along these lines: "Each party agrees that, within [30] days following the date of marriage, he or she will execute any spousal consent or waiver required by the applicable retirement plan administrator to designate [named beneficiary or trust] as the primary beneficiary of his or her [Plan Name] account, in full compliance with the requirements of ERISA sections 205 and 417 and the plan's procedures." This kind of specific, actionable language — rather than a generic waiver — gives the agreement teeth and gives your attorney a clear obligation to enforce.
If the post-wedding consent is never signed, ERISA controls, regardless of what the prenup says. Courts are split on the consequences: some hold that the surviving spouse receives the benefit outright; others have allowed the intended beneficiary to bring a breach-of-contract claim against the spouse who failed to execute the waiver. Either path involves litigation. Executing the waiver promptly after the wedding is far preferable.
IRAs: More Flexible, But Not Without Complexity
Because IRAs fall outside ERISA, prenup clauses addressing them have more room to operate. A prenup can state that each party's IRA — including contributions and growth during the marriage — remains separate property. In states that treat marital contributions to a retirement account as marital property by default, this kind of clause can be especially valuable.
One scenario that deserves specific attention is Roth conversions made during marriage from pre-marital traditional IRA funds. If you convert a traditional IRA that you owned before the marriage into a Roth IRA after the wedding, the converted funds may retain their separate-property character — but the tax liability paid from marital funds during the conversion could give your spouse a claim to reimbursement or a partial marital interest, depending on your state. This is a nuanced area where a prenup clause that specifically addresses Roth conversions — and how the tax cost is allocated — can prevent disputes.
Even with a prenup covering IRAs, beneficiary designations still control who actually receives the account at death. A prenup clause and a stale beneficiary form pointing to an ex-spouse or a deceased parent can create chaos. Update beneficiary designations immediately after the wedding, and review them after every major life event.
How the SECURE Act and SECURE 2.0 Changed the Stakes
The Setting Every Community Up for Retirement Enhancement (SECURE) Act was signed in December 2019. Its successor, SECURE 2.0, was enacted as Division T of the Consolidated Appropriations Act, 2023, signed into law on December 29, 2022. Together, these laws significantly changed how retirement accounts are distributed after death — with direct implications for SECURE Act inherited IRA planning in any prenup.
The 10-Year Rule — and Who It Does Not Apply To
Under the original SECURE Act, most non-spouse beneficiaries who inherit IRAs on or after January 1, 2020, must empty the account within 10 years of the account owner's death, rather than stretching distributions over their own lifetimes.
Critically, however, the 10-year rule does not apply to Eligible Designated Beneficiaries (EDBs), who retain the right to stretch distributions over their life expectancy. EDBs include:
- The surviving spouse
- Minor children of the account owner (until they reach the age of majority, after which the 10-year rule applies)
- Disabled individuals (as defined under IRC § 72(m)(7))
- Chronically ill individuals
- Any beneficiary who is not more than 10 years younger than the decedent
If you have a disabled child, a chronically ill sibling, or a beneficiary close to your own age as your intended heir, the stretch option remains available — and your prenup should be drafted with that in mind.
For beneficiaries who are subject to the 10-year rule and who inherited from an account owner who had already begun taking RMDs, IRS final regulations finalized in July 2024 confirm that annual required minimum distributions must be taken during years one through nine of the 10-year period, with the remainder distributed by the end of year ten. These regulations were long-delayed and controversial; the annual RMD requirement during the 10-year period applies beginning in 2025.
This matters for prenup planning because routing your IRA to children from a prior marriage — rather than to a surviving spouse — subjects those children to the 10-year rule and potentially to annual RMDs, creating a compressed and potentially significant tax burden depending on the account's size.
Surviving Spouses Still Get Favorable Treatment
The SECURE Acts did not strip spouses of their special status. A surviving spouse who inherits an IRA can roll it into their own IRA and defer distributions under their own RMD schedule — a benefit unavailable to any other beneficiary class. If your prenup is designed to exclude your spouse from your IRA, you are trading away that favorable treatment for whoever you name instead. That trade-off deserves careful thought, especially if you are marrying later in life. (See our deeper discussion on prenups and later-in-life marriage.)
RMD Ages Under SECURE 2.0
SECURE 2.0 raised the required minimum distribution age to 73 for individuals born between 1951 and 1959, and to 75 for individuals born in 1960 or later. This means more money can stay in a tax-deferred account for longer — and for prenup purposes, it means account balances at death are likely to be larger than they would have been under prior law, making beneficiary designations and any spousal waivers even more consequential.
Enhanced Catch-Up Contributions
Starting in 2025, individuals aged 60, 61, 62, and 63 can make enhanced catch-up contributions to 401(k), 403(b), and governmental 457(b) plans. The statutory floor is $10,000 indexed for inflation; the actual 2025 limit is $11,250 for this age group. If one spouse is in that window and making substantial catch-up contributions during the marriage, a prenup clause specifying whether those contributions — and their growth — are marital or separate property becomes especially relevant.
403(b), 457(b), and Other Plan Types
The ERISA prenup analysis above applies fully to 403(b) plans sponsored by private non-profit employers, which are ERISA-covered and subject to the same spousal consent rules as 401(k) plans. However, governmental 457(b) plans — offered by state and local governments — are not subject to ERISA. This means the post-wedding spousal waiver requirement does not apply by federal mandate, though state law and plan documents may impose their own spousal rights. If your retirement savings are in a governmental 457(b), your prenup may have more direct effect — but you should verify your specific plan's rules with an attorney.
A Note on Social Security
Prenuptial agreements cannot affect Social Security spousal or survivor benefits. These are governed entirely by federal statute and are not subject to private contract. A spouse who meets the eligibility requirements — generally, a marriage of at least one year — is entitled to spousal and survivor Social Security benefits regardless of what a prenup says. If you are counting on a prenup to address retirement income comprehensively, be aware that Social Security sits entirely outside its reach.
State Law Still Matters: Community Property vs. Equitable Distribution
Prenup retirement account clauses don't operate in a vacuum. In the nine community property states — Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, and Wisconsin — retirement contributions made during the marriage are presumptively community property, meaning your spouse has a claim to half, absent a prenup. A prenup can override that default and define contributions made during the marriage as separate property, but the clause must comply with state-specific requirements to be enforceable.
In equitable distribution states — the majority — courts divide marital property "fairly" but not necessarily equally, weighing factors like length of marriage, each spouse's contributions, and economic circumstances. A prenup that defines retirement contributions made during the marriage as separate property can prevent years of litigation over what "fair" means.
Some states impose additional procedural requirements. Colorado, for example, requires specific language for retirement account waivers in prenuptial agreements. Always verify your state's rules with a licensed attorney before finalizing any clause addressing retirement accounts.
What a Prenup Covering Retirement Accounts Should Include
A retirement-focused prenup clause — whether addressing a spousal waiver 401(k), an IRA, or a pension — needs to do more than say "each party keeps their own retirement accounts." Thorough drafting typically addresses:
- Pre-marital balances as separate property. Identify the account, institution, and approximate value at the time of marriage to create a clean baseline.
- Treatment of contributions and growth during the marriage. Decide whether future contributions and earnings remain separate or become marital property — especially important in community property states.
- A commitment to execute post-wedding ERISA waivers. For ERISA-covered plans, include a specific, time-bound obligation for each spouse to sign a valid spousal consent form after the wedding, in compliance with the plan's procedures. Include sample language or attach the plan's consent form as an exhibit where possible.
- Roth conversion allocation. If either party holds or plans to convert a traditional IRA to a Roth IRA, specify how the tax cost of conversion will be allocated and whether the converted funds retain their separate-property character.
- Beneficiary designation coordination. Require each party to update beneficiary designations consistent with the agreement's terms within a specified timeframe after the wedding.
- QDRO acknowledgment for divorce scenarios. If retirement assets are to be divided upon divorce, the prenup should specify that a QDRO prenuptial agreement provision governs the mechanism. A Qualified Domestic Relations Order must be approved by the plan administrator, cannot award more than the participant's vested benefit, and is the required vehicle for dividing ERISA-covered plan assets. Note that Roth 401(k) assets can be divided via QDRO, but IRAs use a different mechanism — a transfer incident to divorce under IRC § 408(d)(6) — which does not require a QDRO and should be addressed separately in the prenup.
For couples where one spouse is stepping back from their career, it's worth reading about how prenups protect stay-at-home parents — because a spouse who pauses their career may have little retirement savings of their own, and the prenup should account for that reality fairly.
Frequently Asked Questions
Can a prenup protect my 401(k)? A prenup can establish that your pre-marital 401(k) balance is separate property and set the terms for how contributions made during the marriage are treated. However, it cannot by itself waive your future spouse's ERISA survivor rights. A valid spousal consent form, signed after the wedding in compliance with your plan's procedures, is required to accomplish that.
Does ERISA override a prenuptial agreement? Yes, in the specific context of spousal survivor benefits. ERISA requires a post-marriage written, notarized spousal waiver to redirect plan benefits away from a surviving spouse. A prenup signed before the wedding does not satisfy that requirement, regardless of what it says.
What is a QDRO, and does my prenup need to mention it? A Qualified Domestic Relations Order is the legal mechanism used to divide ERISA-covered retirement plan assets in a divorce. It must be approved by the plan administrator and cannot exceed the participant's vested benefit. Your prenup should acknowledge that a QDRO will be used if plan assets are to be divided, to avoid disputes about the process later. IRAs are divided differently — through a transfer incident to divorce under IRC § 408(d)(6) — and your prenup should address that separately.
Who is exempt from the 10-year inherited IRA rule? Eligible Designated Beneficiaries — including surviving spouses, minor children of the account owner, disabled individuals, chronically ill individuals, and beneficiaries no more than 10 years younger than the decedent — are exempt and may still stretch distributions over their life expectancy.
Can a prenup affect my spouse's Social Security survivor benefits? No. Social Security spousal and survivor benefits are governed entirely by federal statute and cannot be waived or modified by a private prenuptial agreement.
Common Mistakes to Avoid
- Treating a prenup clause as sufficient on its own for ERISA plans. It isn't. The post-wedding spousal consent form is non-negotiable.
- Forgetting to update beneficiary designations after the wedding. The prenup and the beneficiary form need to tell the same story.
- Ignoring the 10-year rule when choosing non-spouse beneficiaries. The tax consequences for children or siblings inheriting a large IRA are now compressed and, beginning in 2025, may include annual RMDs during the 10-year period.
- Overlooking Roth conversion planning. Converting pre-marital traditional IRA funds during the marriage can create marital property claims if the tax cost is paid from joint funds.
- Using boilerplate language. Some states require specific wording for retirement account waivers. Generic templates often miss this.
- Not revisiting the prenup after major life changes. A sunset clause or periodic review provision can ensure your agreement keeps pace with growing account balances and changing tax law.
If you're concerned about common prenup mistakes more broadly, the retirement account layer is one of the most consequential areas to get right.
The Bottom Line
Retirement accounts are among the most valuable — and most legally complex — assets you can address in a prenuptial agreement. A prenup covering retirement accounts can protect the balance you've built before marriage, define how future contributions are treated, and set the stage for beneficiary planning that reflects your actual wishes. But because ERISA operates independently of state contract law, a prenup clause alone cannot waive spousal survivor rights in a 401(k), 403(b), or pension. That requires a separate, post-wedding consent executed in compliance with the plan's procedures. IRAs offer more flexibility, but community property states and Roth conversion scenarios introduce complexity that generic prenup language often fails to address.
SECURE 2.0 raised the stakes further: larger balances accumulate longer under the new RMD rules, non-spouse beneficiaries face a compressed distribution window with real tax consequences beginning in 2025, and the distinction between Eligible Designated Beneficiaries and everyone else can mean the difference between a lifetime stretch and a 10-year liquidation. Getting the retirement account provisions of your prenup right — and following through with the required post-wedding steps — is one of the most financially meaningful things you can do before you say "I do."
This article is for general information only and is not legal advice. Consult a qualified attorney in your jurisdiction.