Inheritance issues in a second marriage usually come from four places at once: state default rules that split assets between a surviving spouse and children from a prior relationship, beneficiary forms that quietly override the will, legal protections the current spouse cannot be stripped of, and obligations left behind by the divorce. Any one of them can undo an estate plan. Together they explain why blended-family estates end up in court more often than first-marriage estates do.
The good news is that every one of these problems has a planning fix. The bad news is that doing nothing counts as a choice, and the default outcome rarely matches what the person who died actually wanted.
What Happens if You Die Without a Will
Dying intestate hands the distribution to the state. The formula treats every family the same and the deceased’s wishes don’t enter into it. Most states give the surviving spouse a fixed dollar amount off the top and then split the remainder between the spouse and the deceased’s children by percentage. A spouse who assumed the house was theirs may learn they own only a fraction of it, while children from the first marriage receive a share no one in the household expected.
Whether an asset is separate or community property changes the math. Separate property is what someone owned before the marriage or received as a gift or inheritance during it. Community property is what the couple built together. In the nine community property states, the surviving spouse keeps their half of community property outright, but the deceased’s separate property runs through the intestacy formula and gets split with children from the earlier marriage. Equitable distribution states apply a similar principle: assets the deceased brought into the marriage are more likely to be shared with their children than passed entirely to the new spouse.
Beneficiary Designations Quietly Override Your Will
This is where second-marriage plans fall apart most often. Retirement accounts, life insurance policies, annuities, and payable-on-death bank accounts pass directly to the person named on the form. A will cannot redirect them. If an ex-spouse is still listed on a life insurance policy from before the divorce, the ex-spouse collects, even if the current will leaves everything to the new family.
Most states automatically revoke an ex-spouse’s beneficiary status at divorce, but the protection is incomplete. Federal law governing employer-sponsored retirement plans preempts state law here. Under ERISA, the person named on the 401(k) or pension beneficiary form receives the benefit, period. The Supreme Court confirmed this in Egelhoff v. Egelhoff, holding that ERISA preempts state statutes that would automatically revoke an ex-spouse’s designation after divorce.1Office of the Law Revision Counsel. 29 USC 1144 – Other Laws Remarry, forget to update the form, and the ex still gets the money.
Federal law also builds in a strong default for the current spouse. A 401(k) or pension governed by ERISA must pay the surviving spouse unless that spouse signs a written waiver witnessed by a notary or plan representative.2U.S. Department of Labor. FAQs About Retirement Plans and ERISA Pensions must be paid as a qualified joint and survivor annuity, giving the surviving spouse at least 50% of the benefit for life, and waiving that right also requires the spouse’s notarized consent.3Office of the Law Revision Counsel. 29 USC 1055 – Requirement of Joint and Survivor Annuity and Preretirement Survivor Annuity A parent who wants a 401(k) to go to children from the first marriage needs the current spouse to sign off. Without that signature, the plan administrator pays the surviving spouse regardless of what the will or trust says.
The fix is simple and routinely neglected. Review and update every beneficiary designation after a divorce and again after remarriage. That means employer retirement plans, IRAs, life insurance, annuities, and any bank or brokerage account with a payable-on-death or transfer-on-death designation. These forms are the actual instructions financial institutions follow.
The Surviving Spouse Cannot Be Fully Disinherited
Even a carefully drafted will cannot cut a surviving spouse out entirely. Nearly every state gives the surviving spouse the right to claim a minimum share of the estate, overriding the will’s terms. The right is called the elective share, and it exists precisely to stop one spouse from leaving the other with nothing.
The elective share is calculated as a percentage of what’s often called the augmented estate, a broad measure that can sweep in probate assets, certain trust holdings, joint accounts, and lifetime transfers. Some states set a flat percentage. Others follow the Uniform Probate Code approach, scaling the percentage to the length of the marriage so that a short second marriage yields a smaller share than a decades-long one. The surviving spouse has to petition the probate court to claim it, usually within six to nine months of the death or the appointment of the estate’s personal representative.
Most states also provide short-term allowances that come off the top before anything else gets distributed. These typically include a homestead allowance that protects the family home, an exempt property allowance covering essential items like furniture and a vehicle, and a family allowance for living expenses during administration. The surviving spouse receives these in addition to whatever comes through the will or the elective share.
Any second-marriage plan that intends to leave the bulk of the estate to children from a prior relationship has to reckon with the elective share. Ignoring it invites the current spouse to override the will in probate court.
Children, Stepchildren, and Who Actually Inherits
Biological and legally adopted children are heirs under every state’s intestacy laws. If a parent in a second marriage dies without a will, those children share in the estate alongside the surviving spouse. With a will, the parent can leave them more or less, subject to the surviving spouse’s elective share.
Stepchildren are a different story. A stepchild has no automatic inheritance right from a stepparent, no matter how long the stepparent raised them. A stepchild inherits only if the stepparent’s will or trust specifically names them, or if the stepparent legally adopted the child. Adoption gives the child the same status as a biological child. Without an adoption or an explicit provision in the estate plan, stepchildren get nothing.
Children Born or Adopted After the Will Is Signed
Most states have pretermitted heir statutes that protect children who arrive after a will is signed. If a parent creates a will and later has or adopts a child without updating the document, the omitted child typically receives the share they would have received under intestacy, as though no will existed. The presumption is that the parent would have included the child if they’d thought of it. The statute does not apply if the will makes clear the omission was intentional.
In a blended family, the pattern plays out like this: someone writes a will leaving everything to a new spouse, then has a child with that spouse, and never updates the document. The new child may have a statutory right to claim an intestate share, pulling assets out of the distribution the will contemplated. Update the will after every birth or adoption.
Joint Tenancy Is a Hidden Trap
Property held in joint tenancy with right of survivorship passes automatically to the surviving co-owner at death, outside of probate. The will has no say. That feature makes joint tenancy convenient for simple plans, and dangerous for second marriages.
Adding a new spouse as a joint tenant on the house or a bank account guarantees that asset goes to the spouse at death, no matter what the will says about providing for children from the first marriage. If the plan was to split the estate between the new spouse and prior children, holding the largest asset in joint tenancy with the spouse silently guts that plan. The children receive nothing from that asset because survivorship overrides every other document.
Joint tenancy creates problems while the owner is still alive, too. Adding someone as a joint tenant is an irrevocable transfer. The new co-owner has immediate legal rights in the property, and their creditors may be able to reach it. A transfer-on-death deed, available in a majority of states, avoids both problems. It passes real estate to a named beneficiary at death without giving them any ownership during the owner’s lifetime, and it can be revoked.
Obligations Carried Over From the Prior Marriage
Debts and court orders from a first marriage don’t disappear at death. They follow the estate and can reduce what’s left for everyone else.
Unpaid child support is one of the most persistent claims. Arrears survive the obligor’s death, and the enforcement agency can file a claim against the estate as a creditor. If a child support lien was recorded against real property during the obligor’s lifetime, the lien typically stays attached regardless of whether a formal estate claim is filed. The surviving spouse may find the house they expected to inherit encumbered by a lien from the first family’s support obligation.
Divorce decrees often require one spouse to keep a life insurance policy in force naming the ex-spouse or children as beneficiaries. If the deceased violated that obligation by swapping in the new spouse, the ex or the children can go to court to enforce the decree. These fights frequently end with the insurance company freezing the payout and filing an interpleader action, forcing the parties to litigate over the money. Courts regularly enforce the original decree and redirect the proceeds, especially when the decree language is clear.
With ERISA-governed plans, the picture gets more tangled. Federal law generally requires the plan to pay the named beneficiary even when the divorce decree says otherwise. Once the money is distributed, though, state courts have held that the recipient can be ordered to turn it over based on the contractual terms of the divorce. The result is expensive litigation that keeping the beneficiary form aligned with the decree would have avoided.
How Separate Property Loses Its Character
Commingling is one of the quieter risks. A person who enters a second marriage with a $500,000 brokerage account and then deposits marital earnings into the same account over several years may find it impossible to prove which dollars are separate and which are marital. Once the distinction is blurred, the whole account can be treated as marital property, exposed to the surviving spouse’s claims.
Courts look at intent when deciding whether commingling has destroyed an asset’s separate status. Temporarily parking funds in a joint account doesn’t necessarily convert them, especially if the owner moves the money back quickly and there’s no evidence of a gift to the spouse. Sustained mixing of separate and marital funds, without clear records, creates a strong presumption that the owner meant for the assets to be shared. Keep premarital and inherited funds in separate accounts, don’t deposit marital income into them, and keep documentation showing the original source of the money.
Planning Tools That Actually Protect Both Sides
A will is the starting point. Without one, intestacy controls, and the formula rarely serves a blended family. A will lets you name specific beneficiaries, provide for stepchildren who would otherwise inherit nothing, and allocate assets in proportions that match the actual relationships.
QTIP Trusts
The Qualified Terminable Interest Property trust is the workhorse of blended-family planning. A QTIP trust gives the surviving spouse income from the trust for life while preserving the underlying assets for the children of the first marriage. The spouse receives all income from the trust, paid at least annually, but cannot sell or give away the principal.4Office of the Law Revision Counsel. 26 USC 2056 – Bequests, Etc., to Surviving Spouse When the spouse dies, whatever remains passes to the beneficiaries the original owner chose, typically their children.
One step people miss: the trust has to be funded. A trust document with no assets inside it protects nothing. Funding means re-titling real estate through a recorded deed, changing the ownership name on brokerage and bank accounts, and assigning other property into the trust’s name.
Prenuptial and Postnuptial Agreements
These agreements let a couple define property rights and inheritance expectations before or during the marriage. In a second marriage, the most important function is often waiving the elective share. Without a waiver, the surviving spouse can override the will and claim a statutory portion of the estate, which can derail a plan built around protecting children from the first marriage. A valid prenup or postnup that waives the elective share removes that risk.
Enforceability turns on a few requirements. The agreement must be in writing, signed voluntarily, and supported by fair financial disclosure. If one spouse hid assets or pressured the other, a court can throw it out. Each spouse should have independent counsel review the document before signing.
Will Contests Are Common in Blended Families
Blended families produce will contests at a rate estate attorneys find unsurprising. The most common claim is undue influence: children from the first marriage allege that the new spouse manipulated the parent into rewriting the will. These challenges tend to appear when the parent made significant changes to the estate plan shortly after the second marriage, particularly if the parent was elderly or in declining health.
The strongest defense is built while the person is alive. Have the will drafted by an independent attorney rather than one recommended by the new spouse. Obtain a contemporaneous medical evaluation confirming mental capacity. Document the reasons for the distribution choices in writing. A well-documented plan will not prevent a lawsuit, but it will make one much harder to win.