Wills and Advance Directives: Who Decides When You Cannot

Two documents are routinely confused, and the confusion has real consequences. A will says who gets what after you die. An advance directive says who decides and what you want while you are alive but unable to speak. They are governed by different law, they are enforced by different people, and neither one substitutes for the other.

Both are state law. There is no federal will, no federal healthcare proxy, and no federal form that works everywhere. What follows is the map of where the state rules agree, where they diverge sharply, and where a document that looks binding simply is not.

A will: what makes it valid

Most states follow a version of the Uniform Probate Code. The formal requirements are short and worth reading as written, because nearly every will dispute that reaches a courtroom is about whether they were met:

In writing, signed by the testator, and either signed by two witnesses or acknowledged before a notary. That is the whole of the basic rule under UPC § 2-502(a). The notary branch is an alternative to witnesses, not an addition to them.

Two details trip people up.

Witnesses should be disinterested. Having a beneficiary sign as a witness does not usually invalidate the will, but most states have a “purging” statute under which that witness may forfeit the gift. Use two witnesses who get nothing.

A notary does not make a will valid. This is the most common myth in the field. Only a small number of states allow notarization to stand in place of witnesses; in the rest, a notarized will with no witnesses is simply not a will.

The signing requirements also vary in the details. Most states require two adult witnesses; a few require three. A handful allow a single witness plus a notary. Check your own state before assuming the ceremony you have seen in a movie is the one your state accepts.

The self-proving affidavit

A self-proving affidavit is a separate sworn statement, signed by you and your witnesses at the same time as the will, usually before a notary. Its only function is procedural: it lets the will be admitted to probate without the witnesses having to be located and brought in to testify years later.

It is not required for a will to be valid in any state. Some states do not even offer one by statute, on the view that a properly executed will is already self-proving. It is a convenience, and a useful one — witnesses move away, forget, or die — but it is optional.

Handwritten wills

Many states recognize the holographic will: a will written in the testator’s handwriting, signed by the testator, and not witnessed at all. The UPC formulation, § 2-502(b), is that a will failing the formal requirements is valid if the signature and material portions of the document are in the testator’s handwriting.

At least 23 states do not recognize them for wills executed inside their borders, and the divergence is sharp. A will that is valid in California or Texas — two states with well-developed holographic will rules — may be entirely ineffective in a state that rejects the form.

Anyone listing which states fall on which side should be treated with caution. Published counts range from about 24 to 28, the lists disagree at the margins, and a few states recognize the form only in narrow circumstances. New York and Maryland, for example, allow holographic wills for active-duty service members — and in New York’s case for mariners at sea — generally for a limited period after discharge, while rejecting them for everyone else. Treat any national list, including this one, as a starting point rather than an answer.

Two traps inside the rule:

Printing the body and hand-writing only the signature fails in most states that allow holographic wills. The material provisions have to be handwritten. Arizona courts, for example, have rejected a document whose printed text carried the substance and whose handwriting carried only the signature.

The rule is not uniform even among states that accept the form. California allows the date to be printed. Texas requires the will to be written wholly in the testator’s handwriting. Virginia requires the same. A form that satisfies one state’s statute may not satisfy another’s.

If you are in a state that recognizes holographic wills and you write one, date it. Undated wills cause disproportionate litigation, because the date is usually how a later will is distinguished from an earlier one.

Electronic wills

A growing minority of states permit electronic wills — signed and witnessed electronically, sometimes with remote notarization. Most states do not, and the details differ. Note the asymmetry in at least one large state: Texas has excluded wills, codicils, and testamentary trusts from its electronic transactions act, so they cannot be signed electronically there, even though remote notarization is available for other documents.

If you signed a will on a tablet, verify that your state recognizes the form before relying on it.

What a will does not control

This is where most estate plans quietly fail.

Beneficiary designations pass by contract and override the will. Life insurance, 401(k) and 403(b) accounts, IRAs, annuities, payable-on-death bank accounts, transfer-on-death brokerage accounts, and health savings accounts all transfer directly to whoever is named on the institution’s form. They bypass probate, and they are not governed by your will.

Three consequences, all common:

1. The wrong person takes the money. A divorce does not automatically remove a former spouse from a 401(k) beneficiary designation. Federal law governs most employer plans. Some states have statutes that revoke dispositions to a former spouse on divorce, but those statutes cannot be relied on to defeat a federal plan’s form, and in Hillman v. Maretta the Supreme Court held that the federal scheme gives the account holder a freedom of choice that survives a contradictory state statute. You must file a new designation with the plan.

2. No contingent beneficiary means the asset falls back into your estate. It then goes through probate, on your will’s terms, and is exposed to your creditors in a way it would not have been.

3. Naming your estate as beneficiary is usually a mistake. It typically forfeits the tax deferral that a person can inherit, and it drags the account into probate. Naming a person — or where appropriate a trust — is almost always better.

Crypto and other digital assets often have no beneficiary mechanism at all, which means they pass by will or by the terms of the platform holding them. If nobody has the keys and no document names them, they may simply be lost.

A will does not avoid probate. Probate is the court process for validating the will and distributing the estate. It is public, it takes time, and it costs money. Trusts, joint ownership with right of survivorship, and beneficiary designations are the tools that avoid it. A will is the backstop for everything those tools did not cover.

If you die without a will

Intestacy rules decide everything, and they are the state’s plan, not yours. The usual order is spouse first, then descendants, then parents, then siblings — but the shares and the treatment of a surviving spouse vary substantially, particularly in second marriages and blended families. A surviving partner to whom you were not married typically receives nothing under intestacy.

Advance directives: the healthcare documents

The terminology is inconsistent across states, and that inconsistency causes more confusion than any of the legal rules. There are, broadly, three different instruments with three different functions.

A healthcare power of attorney — called a healthcare proxy, medical power of attorney, or agent designation in different states — names the person who makes medical decisions for you when you cannot. Its scope is broad and open-ended: it is an appointment, not a script.

A living will — a health care directive, or a directive to physicians — states what kinds of treatment you do or do not want at the end of life. It is a statement of values. It is not a medical order, and it does not direct anyone to act.

A POLST, MOLST, MOST, or POST form is the one that actually functions as an order. These are physician-signed medical orders, portable across settings, covering CPR status, the overall level of intervention, and artificial nutrition. Emergency responders are required to follow a valid one. They are designed for people who are seriously ill, frail, or have a prognosis of roughly a year or less; the forms are usually printed on brightly colored paper and kept where they can be found, often on the refrigerator or at the bedside.

A do-not-resuscitate order is narrower still — a physician’s order about CPR specifically. You cannot write one for yourself.

The distinction between the second and third is the one that matters most:

A living will tells people what you want. A POLST tells people what to do.

The out-of-hospital problem

If you are at home and an ambulance is called, the default is full resuscitation. Emergency medical services operate under protocols and implied consent, and in the absence of a verifiable medical order, they will start CPR and continue it.

In that setting:

• A living will generally does not stop resuscitation. Many states do not recognize living wills in the out-of-hospital setting at all.
• A family member’s statement that “he would not have wanted this” does not stop resuscitation. Only a valid order does.
• A DNR or POLST works only when it meets the state’s requirements for that setting — typically a physician’s signature, an unaltered form, and the original or a state-recognized copy, identifier, or bracelet physically present or verifiable. Some states maintain electronic registries that responders can query.

If avoiding resuscitation matters to you, the operative question is not “have I written a living will” but “is there a physician-signed order, on my state’s form, where the paramedics will find it.” Signing a living will and stopping is a common and consequential mistake.

Who decides, if you named no one

Every state has a default surrogate hierarchy for people who did not appoint an agent. The most common pattern puts the spouse first, then adult children and parents, then siblings — but the details differ more than most people expect, and the model act itself has moved.

The original Uniform Health-Care Decisions Act ranked spouse, then adult children, then parents, then siblings. The 2023 revision — which states have been adopting recently — reorders that list in ways that matter. It puts an adult the patient informally identified as a decision-maker ahead of the spouse, and it places adult children and parents at the same tier rather than ranking one above the other. It also adds a cohabitant tier after children and parents, and extends the list to supported decision-making assistants, stepchildren, and close friends. Utah’s version of this structure takes effect January 1, 2026; Oklahoma’s follows on July 1, 2027.

The practical consequence is that a spouse is usually, but not universally, first, and in some states a partner or close friend can outrank a sibling. Check your own state’s list rather than assuming a national rule.

Two standards govern what the surrogate decides. Substituted judgment asks what you would have chosen, based on what is known about your values. Where nothing is known, the standard falls back to best interests. A surrogate is generally not personally liable for the patient’s medical bills; the exception is a parent’s obligation for a minor child.

The constitutional backdrop is Cruzan v. Director, Missouri Department of Health, in which the Supreme Court held that a state may require clear and convincing evidence of an incompetent patient’s wishes before life-sustaining treatment is withdrawn. That standard is why courts sometimes refuse to honor a family’s recollection of a verbal wish.

Two limits people do not expect

A healthcare power of attorney usually includes access to medical records. Federal privacy rules under HIPAA treat a personal representative as standing in the shoes of the patient — with the same rights the patient would have. Someone holding your effective healthcare power of attorney is generally your personal representative for health information connected to the decisions they are authorized to make, and that includes mental health records.

Two boundaries: a limited power of attorney reaches only the information tied to the decisions it covers, and a psychotherapist’s separately maintained private notes are not within the general right of access. Those limits are narrow but real.

The federal patient self-determination law does not create any right to have your directive followed. The Patient Self Determination Act imposes duties on hospitals and other providers that receive Medicare or Medicaid funding: to inform patients of their rights under state law, to record in the medical record whether the patient has an advance directive, to refrain from conditioning care or discriminating based on whether one exists, to comply with state law, and to educate staff and the community. That is the whole of it. It is a procedural statute. It does not make your living will binding on a provider in the way many people assume.

Practical notes

1. Check your beneficiary designations. Annually. This is the single highest-value action in estate planning, and it is free. It is also the thing most likely to be out of date after a marriage, divorce, birth, or death.
2. Match the ceremony to your state. Witnesses, their number, notarization, and whether a holographic will works — all four vary. A form downloaded from another state’s website can be worthless.
3. Name a contingent beneficiary on everything. Without one, the asset falls into your estate and through probate.
4. Do not let your documents contradict each other. A will that leaves everything to a child while a beneficiary form names someone else leaves the conflict to a court.
5. Pair the will with the healthcare documents. The two are usually drafted together, executed together, and need the same conversation with the people you have named.
6. Tell the people you appointed. An agent who does not know they were named, has no copy, and does not know your wishes is barely better than no agent at all.
7. Review after every major life event. Marriage, divorce, birth, a death in the family, a move to another state, or a serious diagnosis. A move across a state line can quietly invalidate a document that was perfectly good where you signed it.

The honest summary

The reason these documents fail is rarely that they were impossible to make. It is that people make one of them, feel finished, and stop. A will without updated beneficiary designations does not control the assets that matter most. A living will without a physician-signed order does not stop an ambulance. A healthcare power of attorney naming someone who has never agreed to serve and has no copy of the document is a name on paper.

The documents themselves are cheap, and in most states can be drafted without a lawyer. What the money actually buys is a review of how the pieces fit: whether the signing ceremony met your state’s requirements, whether your beneficiary forms agree with your will, and whether the person you named knows what you want and is willing to say it out loud.

Do that once, revisit it after every major change, and you have avoided nearly every failure mode in this area of law.

This article is general information about United States law, not legal advice. Wills, advance directives, and default decision-making rules are governed by state law and vary substantially. Consult a licensed attorney in your state about your own situation.