Yes, you generally do need a will if you’re married. The common assumption that a surviving spouse automatically inherits everything holds true in only one narrow scenario, and even then a will still handles things your spouse’s inheritance rights cannot: guardians for your children, an executor to manage your estate, and instructions that coordinate with the retirement accounts and insurance policies that pass outside probate. In every other family situation, dying without a will hands the outcome to a state formula that rarely matches what married couples expect.
Why Marriage Alone Doesn’t Send Everything to Your Spouse
When you die without a will, your state’s intestacy law decides who inherits. These formulas are rigid. They don’t consider your relationships, your spouse’s needs, or your intentions.
The one situation where intestacy reliably matches what most couples expect is a marriage with no children and no surviving parents. There, the spouse usually takes everything. Add almost any other relative and the math shifts.
If you have children from a previous relationship, state law typically splits your estate between your surviving spouse and those children. Your spouse might receive a set dollar amount off the top plus a fraction of what remains, with the rest going to your children.1Justia. Intestate Succession Laws In a blended family, that split can force a surviving spouse to sell the family home to fund the children’s share.
A surviving parent can also claim a piece. If you die married with no children and one of your parents is still alive, many states give that parent a share of the estate.1Justia. Intestate Succession Laws Your spouse would not receive everything, even if you both assumed they would. A will overrides these defaults and directs your property where you actually want it.
How Much of Your Property a Will Can Actually Direct
Your state’s marital property system sets the outer edge of what a will can control.
Nine states follow community property rules: Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, and Wisconsin. In those states, most property earned or acquired during the marriage belongs equally to both spouses regardless of whose name is on the account. When one spouse dies, the survivor already owns their half outright. Only the deceased spouse’s half passes through the estate, and only that half is what a will can direct.
The other 41 states use a common law system. Property belongs to whoever earned it or holds title. A spouse who stayed home to raise children and holds nothing in their own name could be left with very little if the other spouse’s will sends everything elsewhere. To prevent that, common law states give the surviving spouse an “elective share,” a right to claim a set percentage of the deceased spouse’s estate no matter what the will says. The percentage varies by state, but the right sits underneath every will as a floor a spouse cannot be written below.
Knowing which system applies helps you write a will that fits the law. In a community property state, your will addresses your separate property and your half of the community assets. In a common law state, your will governs everything titled in your name, with the elective share protecting your spouse.
Guardians for Your Children
A will is the only legal document where you can name the person you want to raise your children if both parents die. No other estate planning tool does this. For parents of minor children, this feature alone answers the question of whether a will is needed.
Without a guardian nomination, a judge chooses. The court aims for the child’s best interest, but the judge does not know your family, your values, or which relatives you trust. Family members sometimes compete for custody, producing exactly the kind of prolonged court fight most parents would want to spare their children. When parents name a guardian in their will, courts almost always honor that choice as long as the person is fit to serve.
Splitting Care From Money Management
A guardian handles who raises your children. That is not the same as who manages the money your children inherit, and the best person for one role is not always the best for the other. Your will can name a guardian of the person for daily care and a separate guardian of the estate, sometimes called a conservator, to manage the child’s finances. Splitting the roles lets you pick the warmest caregiver for parenting and the most financially responsible person for the inheritance.
Testamentary Trusts
Without a trust, a minor who inherits money typically receives the full amount outright at age 18. Most parents are uncomfortable with that. A will can create a testamentary trust, which springs into existence at your death and holds the inheritance until your child reaches an age you set.
The trustee you name manages the funds and can make distributions for the child’s health, education, and living expenses in the meantime. You can direct that the remaining balance be paid out at 25, 30, or another milestone. With multiple children, you can create a single “pot trust” giving the trustee flexibility to distribute based on each child’s needs, or individual trusts holding separate shares. Either approach keeps a teenager from receiving a large lump sum the day they become a legal adult.
The Accounts Your Will Won’t Touch
A will governs probate assets. Several major categories of property bypass a will entirely and transfer directly to whoever is named on a form or listed as a co-owner. If you plan only around the will and ignore these accounts, you can undercut your own intentions.
Retirement accounts like 401(k)s and IRAs pass to whoever is listed on the beneficiary designation. That form is a contract with the account custodian and overrides your will. Life insurance policies work the same way. Property held as joint tenants with right of survivorship transfers automatically to the surviving owner, which is the most common ownership form for real estate and bank accounts between spouses. Bank and brokerage accounts can also carry payable-on-death or transfer-on-death designations that send the balance directly to a named person.
A coordinated plan for a married person addresses both sides: a will for probate assets, and up-to-date beneficiary forms for everything else.
The ERISA Safety Net, and Its Gap
Federal law provides one built-in protection for spouses on employer-sponsored retirement plans. Under ERISA, plans like 401(k)s must provide a survivor annuity to a married participant’s spouse. Naming anyone else as beneficiary requires the spouse’s written consent, witnessed by a plan representative or notary public.2Office of the Law Revision Counsel. 29 USC 1055 – Requirement of Joint and Survivor Annuity and Preretirement Survivor Annuity A married person generally cannot quietly disinherit a spouse on a workplace retirement plan.
IRAs and life insurance are not covered by ERISA. In most states, the beneficiary on those accounts can be changed without the spouse’s knowledge.
Updating Designations After Life Changes
Outdated beneficiary forms cause more accidental disinheritance than almost any other planning failure. If an ex-spouse is still listed on a 401(k) after a divorce, the outcome depends on the kind of account.
Many states have revocation-upon-divorce laws that automatically remove a former spouse as beneficiary when a marriage ends, and the U.S. Supreme Court upheld those statutes in 2018.3Supreme Court of the United States. Sveen v Melin That protection has a serious blind spot. The Supreme Court has separately held that ERISA preempts state revocation laws, so employer-sponsored plans must pay whoever is listed on the form even when a state statute or divorce decree says otherwise.4Legal Information Institute. Egelhoff v Egelhoff Failing to update the beneficiary on an employer 401(k) after a divorce can send retirement savings to an ex-spouse years later, and a current spouse would have no recourse.
Review every designation after any major life event: marriage, divorce, birth of a child, or a beneficiary’s death. The accounts that matter most are employer retirement plans, employer life insurance, IRAs, and any bank or brokerage account with payable-on-death or transfer-on-death instructions.
Naming Your Executor
Your executor carries out the instructions in your will. They locate and inventory your assets, pay remaining debts and taxes, and distribute what’s left to your beneficiaries. The work is demanding and takes months, sometimes longer.
Without a named executor, the court appoints an administrator. State law sets a priority list, generally starting with the surviving spouse, then adult children, then other relatives. The court-appointed person may be perfectly capable or may be the last person you would have picked.
You can appoint a family member, a trusted friend, or a professional entity such as a bank or trust company. Always name at least one successor who can step in if your first choice cannot serve. People move, develop health problems, or decide the job is more than they want. A backup keeps the process in the hands of people you chose.
Why This Matters for a Surviving Spouse’s Taxes
Most married couples will not owe federal estate tax. The 2026 exemption is $15,000,000 per person, and a couple can potentially shelter up to $30,000,000 combined.5Internal Revenue Service. What’s New — Estate and Gift Tax On top of that, federal law lets you leave any amount to a surviving spouse free of federal estate tax through the unlimited marital deduction.6Office of the Law Revision Counsel. 26 USC 2056 – Bequests, Etc., to Surviving Spouse
For families with significant assets, the exemption is portable between spouses. Whatever the first spouse to die does not use can transfer to the survivor, but portability is not automatic. The executor of the first spouse’s estate must file IRS Form 706 within nine months of death, with a possible six-month extension, to elect it.7Internal Revenue Service. Instructions for Form 706 A simplified late-election procedure allows filing up to five years after the date of death if the deadline is missed.8Internal Revenue Service. Revenue Procedure 2022-32 A will that names a competent executor puts someone in place to handle that filing. Without one, the election can slip through the cracks.
What About Debts
A common worry is that a surviving spouse gets stuck with all of the deceased spouse’s debts. Debts do not disappear at death, but they are generally paid from the estate, not from the surviving spouse’s personal funds.
The exception is community property states. In those nine states, debts incurred during the marriage may be treated as the responsibility of both spouses, even if only one took on the debt. A creditor could pursue the surviving spouse personally for medical bills or credit card balances accumulated during the marriage. Rules vary among community property states, so the scope of that exposure is not uniform.
An organized executor can move the estate through the creditor claims process efficiently, resolving debts and preserving more for the beneficiaries. That is one more reason naming your own executor matters. It is not just about distributing assets. It is about protecting them from being consumed by a disorganized probate.