Estate planning in a stepfamily

Everything below is about one thing: what the law does by default when you say nothing. In a first marriage the defaults are roughly what most people would have chosen anyway. In a stepfamily they are not, and the gap between what you meant and what happens is where families come apart.

The short version10 points · tap one to jump to it

1. The beneficiary form beats your will, and usually beats your divorce decree
2. Remarry, and your new spouse may displace your children automatically — Under federal law, the current spouse — whoever that is on the day you die — has built-in rights in an employer retirement plan.
3. Dying without a will does not leave everything to your spouse
4. You generally cannot disinherit a new spouse — In nearly every state that is not a community property state, a surviving spouse can refuse what your will leaves them and take a statutory share instead.
5. A stepchild you raised inherits nothing — If you raised a stepchild from the age of three, paid for their education, and die without naming them, they receive nothing.
6. Who decides when you cannot — and the trap for people who did not remarry
7. The teacups — Not everything that causes a fight is worth money.
8. What to actually do
9. The worksheet — We have rewritten it in our own words and added the document names used in this country; the structure and the idea are theirs.
10. What we could not verify — Every statute, regulation and opinion cited here was read on the issuing body’s own site on 15 September 2026.

In this subject 10

1. The beneficiary form beats your will, and usually beats your divorce decree

This is the single most expensive misunderstanding in the whole subject, so it goes first. For a 401(k), a pension, or life insurance through work, the money goes to whoever is named on the plan’s own form. Your will does not reach it. Your divorce decree, on its own, usually does not reach it either. The plan administrator’s legal duty is to read the plan’s paperwork and pay the person named there.

The Supreme Court has now said this four times, and in three of those cases the people you would expect to win lost.

Against those four, one case went the other way. In Sveen v. Melin, 584 U.S. 811 (2018), a man named his wife on a life insurance policy and his two children from a prior marriage as backups, divorced, changed nothing, and died. Minnesota’s revocation statute canceled the ex-wife’s designation and the children took the money.

Authority: Egelhoff v. Egelhoff, 532 U.S. 141 (2001); Kennedy v. Plan Administrator for DuPont Savings and Investment Plan, 555 U.S. 285 (2009); Hillman v. Maretta, 569 U.S. 483 (2013); Ridgway v. Ridgway, 454 U.S. 46 (1981); Sveen v. Melin, No. 16-1432, 584 U.S. 811 (2018). ERISA preemption at 29 U.S.C. § 1144(a). Every opinion read in full. Checked 15 Sep 2026.

One question the Court deliberately left open

In Kennedy the Court decided only that the plan had to pay the named person. It expressly did not decide whether the estate could then sue that person to get the money back afterwards, and the lower courts are split on it. If you are on the wrong end of this, that is the live question — and anyone who tells you the answer is settled is guessing.

2. Remarry, and your new spouse may displace your children automatically

Under federal law, the current spouse — whoever that is on the day you die — has built-in rights in an employer retirement plan. In a typical 401(k) the entire vested account goes to the surviving spouse unless that spouse has signed a written consent, witnessed by a notary or a plan representative, to someone else receiving it.

Naming your children on the form is not enough on its own. Without the new spouse’s signed consent, that designation can be overridden. And the statute is explicit that a consent runs to one spouse only: “Any consent by a spouse … shall be effective only with respect to such spouse.” Remarry, and you start again.

• The one-year rule is not what people think. The statute says a plan “may provide” that benefits are not payable to a surviving spouse unless the marriage lasted a year. It is permission for a plan to write that rule, not a federal default. Some plans have it; some do not. It has to be looked up in your own plan document.
• A consent signed before the wedding does not count. The statute speaks of “the spouse of the participant,” and a fiancée is not yet a spouse, and the Treasury regulation settles it: an agreement entered into before marriage “does not satisfy the applicable consent requirements” (Treas. Reg. § 1.401(a)-20, Q&A-28). A prenuptial waiver of 401(k) rights has to be signed again, on the plan’s own form, after the wedding.
• An IRA is a different animal. No spousal consent is required by federal law, and an IRA is divided in a divorce by the divorce instrument itself rather than by a court order to the plan. So rolling an old 401(k) into an IRA is an estate-planning event, not a paperwork event — it moves the money out of one set of rules and into another. In a community property state, state law and your custodian’s own contract may still require a spouse’s signature.

Authority: ERISA § 205, 29 U.S.C. § 1055, in particular § 1055(b)(1)(C) (the whole account to the surviving spouse absent consent), § 1055(c)(2) (written, witnessed or notarized consent, effective only as to that spouse) and § 1055(b)(4) and (f) (the permissive one-year provision); parallel provisions at I.R.C. §§ 401(a)(11) and 417. Qualified domestic relations orders at 29 U.S.C. § 1056(d)(3), survivor-annuity assignment at § 1056(d)(3)(F). IRAs at I.R.C. § 408, division on divorce at § 408(d)(6). Checked 15 Sep 2026.

3. Dying without a will does not leave everything to your spouse

Most people believe that if they die without a will, their husband or wife simply inherits. That is roughly true when all the children are both of yours. When any of your children are not your spouse’s children, almost every state splits the estate instead — and the split varies enormously.

Ohio is the starkest. A surviving spouse who is a stepparent to two of your children receives $20,000 plus a third; had those children been hers as well, she would receive the whole estate. On a $600,000 estate that is roughly $213,000 instead of $600,000.

And note what intestacy does not touch: anything with a named beneficiary. Accounts with a payable-on-death designation, life insurance, retirement plans — those pass to whoever is on the form, entirely outside this. So a single estate can split three ways under three different rule sets, and the will governs only one of them.

Authority: Uniform Probate Code § 2-102 and its official Comment; Ohio Rev. Code § 2105.06(B)–(D); N.D.C.C. § 30.1-04-02; Minn. Stat. § 524.2-102; Fla. Stat. § 732.102; N.Y. EPTL § 4-1.1(a)(1); Wash. Rev. Code § 11.04.015(1). Each read on that state’s own legislature or revisor site. The UPC’s bracketed dollar figures are a drafting convention — each state fills in its own, and several adjust for inflation, so confirm the current figure for your state. Checked 15 Sep 2026.

4. You generally cannot disinherit a new spouse

The mirror-image plan fails too. In nearly every state that is not a community property state, a surviving spouse can refuse what your will leaves them and take a statutory share instead. It is called the elective share or forced share, and the will cannot override it.

There is no national number:

• Florida — 30% of the elective estate.
• New York — the greater of $50,000 or one-third of the net estate.
• North Dakota — a flat 50%, whether the marriage lasted thirty years or eighteen months.
• Minnesota — a sliding scale by length of marriage, from a supplemental amount only under one year to 50% at fifteen years or more.

Two structural details are widely missed. The share is usually calculated against an augmented estate that deliberately sweeps in joint accounts, payable-on-death designations and revocable trusts, precisely so it cannot be dodged by retitling. And it is normally on top of homestead and family allowances, not instead of them.

The only reliable way to protect a first family’s share is a signed waiver in a prenuptial or postnuptial agreement. That is the single most important document in a remarriage estate plan and it is the one most often skipped.

Community property states work differently, but not uniformly

In a community property state the surviving spouse does not need to elect, because they already own half of what the couple earned during the marriage. That half was never yours to give away. But do not generalize: Wisconsin is a community property state and has an elective share as well. And Louisiana runs the opposite way, protecting children — a child under 24, or a permanently incapacitated child of any age, cannot be disinherited there.

Authority: Uniform Probate Code §§ 2-202 and 2-203; Fla. Stat. § 732.2065; N.Y. EPTL § 5-1.1-A(a)(2); N.D.C.C. § 30.1-05-01; Minn. Stat. § 524.2-202; Wis. Stat. § 861.02(1); La. Civ. Code art. 1493; Cal. Fam. Code § 760 and Cal. Prob. Code § 100. The nine community property states are Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington and Wisconsin. Checked 15 Sep 2026.

5. A stepchild you raised inherits nothing

If you raised a stepchild from the age of three, paid for their education, and die without naming them, they receive nothing. Your biological children receive everything. Affection, dependency and the length of the relationship are legally irrelevant. Only adoption, or a will, trust or beneficiary designation naming them, changes it.

We went looking for exceptions and found two, both close to useless in practice:

• California Probate Code § 6454 lets a stepchild inherit only if the relationship began in childhood and lasted through both lifetimes, and it is proved by clear and convincing evidence that the stepparent would have adopted them but for a legal barrier. That has to be litigated after the stepparent is dead and cannot testify.
• Ohio names stepchildren, at the very bottom of the order — they inherit only if there is no spouse, no children, no parents, no siblings, no grandparents and no next of kin of any degree. It is an anti-escheat rule, not recognition.

If you want a stepchild to inherit, name them, in full, and state the relationship. Do not write “my children” and assume it covers them. It almost certainly will not.

Authority: Cal. Prob. Code § 6454; Ohio Rev. Code § 2105.06(J)–(K); Fla. Stat. § 732.103(5); N.D.C.C. § 30.1-04-18; Minn. Stat. § 524.2-119. We checked California, Ohio and Florida directly for stepchild exceptions and did not survey all fifty states — the general rule is well established, but we would rather say what we checked. Checked 15 Sep 2026.

6. Who decides when you cannot — and the trap for people who did not remarry

If you lose capacity and left no health-care directive, state law supplies a list of who may decide, in order. In every hierarchy we read, the spouse outranks the adult children. A second spouse of six months outranks a daughter of forty years, and the statute does not ask how long the marriage lasted.

That is the well-known half. The half that matters more to readers of this site is the mirror image.

What a divorce does to a directive you already signed

Many states strip a former spouse of authority automatically. The trigger differs on a detail that matters for the eighteen months a divorce is pending: Washington cuts the ex off when the case is filed. Florida not until the divorce is final. In Washington the document can also opt out of the protection, and the authority springs back if the case is dropped.

Treat automatic revocation as a backstop, not a plan. Signing a new directive is the only reliable step — and note it cuts the other way too: someone who genuinely wants an amicable ex to keep the role has to re-execute to say so.

The documents, briefly

• Health-care power of attorney or proxy — names a person.
• Living will — states your wishes, names nobody.
• POLST or MOLST — a doctor’s order on your chart, acted on immediately by paramedics. Not a legal directive, and in some states your surrogate can sign one, which is how a resuscitation order changes without the children knowing.
• Financial power of attorney — a separate document in most states. Do not assume the one your bank accepted does anything in a hospital.
• HIPAA authorization — see below.

Burial and cremation are a separate list

A second hierarchy governs what happens to your body, and here there is good news: most states let you name someone in advance who outranks the spouse. It is the most under-used document in the set.

• Washington — a witnessed, signed designation ranks above the surviving spouse.
• California — the health-care agent ranks first, above the spouse, so choosing your health-care agent silently decides your funeral. California also will not enforce your written funeral wishes unless they are funded.
• Ohio — the spouse leads unless you executed a separate declaration, and there is a clock: a person who fails to act within 48 hours of being notified loses the right.

Authority: Fla. Stat. §§ 765.401, 765.104 and 765.101; Ohio Rev. Code §§ 2133.08, 2108.70, 2108.75, 2108.77 and 2108.81; Wash. Rev. Code §§ 7.70.065, 11.125.100 and 68.50.160; Va. Code § 54.1-2986; Cal. Health & Safety Code §§ 7100 and 7100.1; Cal. Prob. Code § 4780; 45 C.F.R. §§ 164.502(g) and 164.510(b). We read four surrogate hierarchies and three disposition hierarchies, not fifty — the pattern held in every one, but we will not put a number on “most states” that we have not counted. Checked 15 Sep 2026.

7. The teacups

Not everything that causes a fight is worth money. In a paper published this year, Naomi Cahn and Patricia Papernow describe a woman searching her late father’s house for her grandmother’s teacups — the ones her mother had played with as a child, and then she had — and asking her stepmother of twenty-two years where they were. The answer was that she had given them to Goodwill. She had no idea what they were. Nobody had told her.

The fix is a tangible personal property memorandum: a separate signed list, referred to in your will, that you can change later without redoing the will. Cahn and Papernow note that these lists “are only legally binding in some U.S. states.” That is exactly right, and here is which ones.

Verified: the memorandum is binding

Verified: it is not

We could not verify these, and will not guess

Those eighteen are not a shrug. Each one is a state that either hands its statutes to a commercial publisher, serves an empty page to anything that is not a browser, or misconfigures its own security certificate. New Jersey is the most frustrating: its own search index returns a section titled “Identifying devise of tangible personal property by separate writing,” so the law exists — the text simply could not be retrieved.

State-specific details worth knowing

• California caps it: $25,000 in aggregate, and any single item worth more than $5,000 drops out and passes under the residuary clause. Must be dated, and filed with the inventory.
• Nevada has the strictest formalities in the country — date, a title stating its purpose, a reference to the will, reasonably certain descriptions, and a handwritten or electronic signature.
• Washington expressly includes bullion and coins in its definition, and expressly excludes currency, bank accounts and securities.
• Minnesota alone carves out coin collections.
• Wisconsin requires a signature and a date, but a court may excuse a missing date — and extends the same mechanism to digital property.
• Virginia is the most generous. It covers revocable trusts as well as wills, allows alteration at any time, and uniquely gives a named person one year to recover the item, or its value, from whoever received it by mistake. That is the only real remedy for the teacups anywhere in the fifty states.

Authority: Uniform Probate Code § 2-513 and its official Comment, as reproduced by the Massachusetts Trial Court Law Libraries; the enacted text read on each state’s own site, including Utah Code § 75-2-513, S.D.C.L. § 29A-2-513, Haw. Rev. Stat. § 560:2-513, Cal. Prob. Code § 6132, Fla. Stat. § 732.515, Nev. Rev. Stat. 133.045, Wash. Rev. Code 11.12.260, Minn. Stat. § 524.2-513, Wis. Stat. § 853.32(2)(a), Va. Code § 64.2-400, Ore. Rev. Stat. 112.260; and for the states listed as “not binding,” the complete wills chapter of each. The teacups account is from Cahn, N., & Papernow, P. (2026), “Meeting the health, financial and legal challenges of stepfamilies in later life: White coats, green dollars, and special teacups,” Family Court Review, doi.org/10.1111/fcre.70064 — open access, and worth reading in full. Checked 15 Sep 2026.

8. What to actually do

• Ask every plan and insurer, in writing, who is currently named. Not what your divorce file says — what the plan has on record. 401(k), pension, employer life insurance, every private policy, every IRA, every HSA and annuity.
• Submit a new beneficiary form to each one, and keep the dated confirmation.
• Confirm a QDRO was actually entered and accepted by the plan administrator. Ask the plan in writing and get the answer in writing. A decree in your lawyer’s file is not a QDRO.
• Write the will after the wedding, not before. A will made before the marriage can trigger an omitted-spouse statute that hands your new spouse a share you never chose — and in California, where there is no elective share, that statute is potent enough to redirect the estate on its own.
• If the plan is for your children to receive a set share, the new spouse has to waive the elective share in a signed prenuptial or postnuptial agreement. There is no other reliable route.
• Decide how the house is titled, deliberately. Joint tenancy with right of survivorship sends the whole house to the survivor whatever the will says. Tenancy in common sends your share through your estate and can leave your spouse co-owning with your adult children. Neither is automatically right, and this is the decision most likely to end in litigation.
• Sign the advance directive, the financial power of attorney, a HIPAA authorization, and a disposition-of-remains designation. Re-sign all of them after the divorce is final, and again after any move to another state.
• Write the memorandum of special things — and make sure the will says it takes precedence. Ask the adult children what matters to them before you finalize it. That conversation is the actual point; the document is just what makes it stick.
• Tell the adult children who holds what, while everyone is well. No statute does this, and most of the conflict in these cases is discovery at the bedside.

9. The worksheet

Everything above is the law. This is the part where two people sit down and decide what they want it to do. It is adapted, with permission, from Appendix B of the Cahn and Papernow article — a worksheet the authors wrote to be printed and worked through by a couple with adult children from previous relationships. We have rewritten it in our own words and added the document names used in this country; the structure and the idea are theirs.

Do it in this order. The conversations are the point. The documents are just what makes the conversations stick.

There is a printable version of everything below at thecusp.app/worksheet — free, no sign-up, with ruled space to write in and a QR code on the page so it can go on a handout or a slide. It is the same material laid out to be worked through at a kitchen table rather than read on a phone.

Health and end-of-life

Documents to have: an advance care directive containing both a living will and a health-care proxy; HIPAA releases; and, if either of you is seriously ill, a DNR or POLST.

• Say your wishes out loud to each other first. Who do you each want deciding? Do you want anyone else involved — a particular adult child, a sibling? Where do you differ? This is where couples discover that one of them assumes “let go” and the other assumes “fight to the end.”
• Write them down, then copy and share them. A directive nobody can find at 2am does nothing. Your partner, your adult children, and your doctor should each have one.
• Decide who gets access to your medical information, and sign a HIPAA release for each of those people by name. This is the cheapest way to give adult children a right to information without changing anyone’s authority to decide.
• Talk about long-term care, and if you are not married, talk about it twice. Eligibility rules, who pays, and who can act for whom all change with marital status.
• Say what you want done with your body, in writing, and tell the children. Ask them what they need too — a funeral is one of the few things that cannot be redone.

Money, while you are both alive

Documents to have: a financial power of attorney each, and a binding agreement between you — a prenuptial or postnuptial agreement if you are married, a cohabitation agreement if you are not.

• Talk about money for adult children before it happens, not after. What did each of you grow up believing about helping grown children? What have you each actually done? What do your children expect? Write down what you each want to contribute, where you agree, and where you do not.
• List the assets, and decide which stay separate. Then do the same for debts, and again for whatever you earn or acquire from here on.
• Decide how you split living expenses, and settle in writing what happens if one of you owns the home the other lives in.
• Put a date in the calendar to revisit it. None of this survives contact with a redundancy, an inheritance, or a grandchild without being revisited.

One structural warning the authors make and we would repeat: the “one pot” model, where a recoupled couple puts everything into a joint account, is often a poor fit here. On death the surviving account holder takes the whole balance, which is rarely what either of you intended for the other’s children.

Inheritance

Documents to have: wills or trusts; beneficiary designations reviewed on every account and policy; and a memo of special things — even in a state where it is not binding.

• Decide what each of you wants to leave to your own children, and to each other. Say the numbers out loud.
• Answer the housing question explicitly. When the first of you dies, can the survivor stay in the house? For how long — for life, for a fixed term, until they repartner? What happens to it then? This single question causes more stepfamily litigation than any other, and it has a dull, well-established answer: a trust that gives the survivor the home for life and the remainder to the children.
• Ask the adult children what objects matter to them, before you finalize the list, and share it afterwards. That conversation is the whole point of a memo of special things.

And then, for each of the three

• List the conversations that now feel finished — with each other, and with the children.
• List the ones still to have, and the decisions still open. Name who you need help from.
• List the documents that are done, and mark it. Most people never finish this; if you have, that is worth something.
• List the documents still outstanding, and put dates against them.
• List what you have actually shared, with each other and with the children — and what is still sitting in a drawer nobody knows about. A plan nobody has been told about is a surprise waiting to happen, and surprise is what starts the fight.

Adapted with permission from Appendix B, “For couples with adult children from a previous relationship,” in Cahn, N., & Papernow, P. (2026), “Meeting the health, financial and legal challenges of stepfamilies in later life: White coats, green dollars, and special teacups,” Family Court Review 1–26, doi.org/10.1111/fcre.70064. The article is open access. Permission to adapt with attribution given in writing by Dr Papernow on 15 September 2026. The wording here is ours and the errors are ours; the structure is theirs, and the original worksheet is worth printing in full from the article itself. Checked 15 Sep 2026.

10. What we could not verify

Stated plainly, because a page like this is only worth reading if the gaps are marked.

• Texas could not be read at all. Its statutes site returned an identical 250,874-byte JavaScript shell for every path we tried, with a success code every time. No Texas provision is quoted anywhere on this page.
• Michigan failed certificate verification and Utah returned identical byte counts for three different sections, which is the signature of an empty shell rather than content.
• No fifty-state survey was done on surrogate hierarchies, stepchild exceptions, or disposition of remains. Where we say “every hierarchy we read,” we mean four.
• Visitation. We found no statute governing who may visit an incapacitated patient. If you have read that adult children have no right to visit, we could not establish that, and we are not going to repeat it.
• Whether an estate can recover ERISA benefits after they are paid out. The Supreme Court expressly left it open and the lower courts are split.
• Georgia’s elective share. Georgia is commonly described as the one state without one. Georgia publishes its code only through a commercial publisher, so we could not check, and we are not repeating it.

This page is about default rules and the documents that override them. It is not legal advice, and every figure and threshold above is a starting point for a conversation with someone licensed in your state — not a substitute for one. The Cusp is not a law firm and does not provide legal, financial or clinical advice. Every statute, regulation and opinion cited here was read on the issuing body’s own site on 15 September 2026. Where we could not read a source, we said so rather than filling the gap.

If you advise people professionally rather than planning your own: Appendix A of the same article is a checklist for the practitioner, adapted with permission at a stepfamily lens. Free and printable, with a QR code for a slide.

Four pages go further on what this one touches: why the beneficiary form outranks your will, every document to change by hand after a divorce, what a prenup can waive at death, and what happens when an ex dies.