How to Write a Will in Arizona: Legal Requirements & Steps

The general principle: a will is a legal declaration of how you want your assets distributed after death. For it to be enforceable, the state has to be able to verify it was made voluntarily, by someone of sound mind, and with the proper formalities. Arizona's rules come from Title 14 of the Arizona Revised Statutes, which adopts the Uniform Probate Code framework.

The four hard requirements under Arizona law:

• Age: You must be at least 18 years old (or legally married, or a member of the armed forces)
• Testamentary capacity: You must be of sound mind — meaning you understand what a will is, what property you own, and who your natural heirs are
• Signed by the testator: You must sign the will yourself, or direct someone else to sign it in your presence if you're physically unable
• Two witnesses: At least two adult witnesses must watch you sign (or acknowledge your signature) and then sign the will themselves

Notarization is not required — but attaching a self-proving affidavit (which does require a notary) saves your family from having to track down witnesses during probate. Every time I've seen a family struggle through probate over a will that was perfectly valid but had no self-proving affidavit, the delay cost them three to six extra months and several hundred dollars in court costs. Skip the notary and you're passing that problem to your heirs.

• Age: must be 18 or older (or married, or active military)
• Testamentary capacity: must understand what you own, who your heirs are, and what a will does
• Testator signature: signed by you, or by another person at your direction and in your presence
• Two adult witnesses: must witness your signature or your acknowledgment of it, then sign the document

Arizona is one of roughly half of U.S. states that recognize holographic wills — entirely handwritten wills that require no witnesses. The material provisions and your signature must be in your own handwriting. That's it.

Quick scenario: You handwrite "I leave everything to my daughter Maria, signed John Smith, March 3, 2026." Under Arizona law, that's a valid will. But here's the thing — "everything" is a word that generates litigation. What about the LLC interest? The retirement account? The truck titled in your name? Courts spend real money sorting that out.

Holographic wills are useful in genuine emergencies. Servicemembers have used them in combat zones. Patients have written them in hospital rooms. Outside of those situations, the risk-reward calculation doesn't favor them. An unclear holographic will that gets challenged during probate can cost a family $5,000–$20,000 in legal fees — easily ten times what a drafted will would have cost upfront.

A will controls probate assets — property held in your name alone, without a designated beneficiary. This is where people make the most avoidable mistake I see: they spend time and money on a will, then assume it governs everything they own.

It doesn't. These assets pass outside your will regardless of what it says:

• Life insurance proceeds with a named beneficiary
• Retirement accounts (401(k), IRA, pension) with a named beneficiary
• Bank accounts held jointly with right of survivorship
• Property held in a living trust
• Payable-on-death (POD) and transfer-on-death (TOD) accounts

Your will should name an executor (called a "personal representative" in Arizona), name guardians for any minor children, and identify your beneficiaries clearly — full legal names, not nicknames. It should also address what happens if a beneficiary dies before you do. That "residuary clause" handles the leftovers. Without it, anything not specifically gifted may pass by intestacy laws to heirs you might not have chosen.

One practical note on community property: Arizona is a community property state. Property acquired during marriage is generally owned equally by both spouses. You can only will your half. Separate property — owned before marriage or received as a gift or inheritance — is yours to will entirely. Mixing community and separate property without documentation is a recurring source of disputes that even good wills don't cleanly resolve.

• Life insurance with a named beneficiary
• Retirement accounts (401k, IRA) with a named beneficiary
• Jointly held property with survivorship rights
• Assets already in a living trust
• POD and TOD designated accounts

Online will platforms charge $30–$200 for a templated document. An estate planning attorney in Arizona typically charges $300–$800 for a simple will, and $1,200–$2,500+ for a full estate plan that includes a living trust, power of attorney, and healthcare directive. Those numbers are 2026 ranges for Arizona — urban areas like Phoenix and Scottsdale tend to run 10–20% higher than rural markets.

The DIY route works — sometimes. A single person with simple assets, no minor children, no business interests, and no blended family complications can often execute a clean will through a reputable online platform. But Clients who come to me after trying the DIY route always say the same thing: they didn't realize how many decisions the template was quietly making for them.

Attorney-drafted wills earn their cost when your situation involves any of these:

• Minor children (guardian and trustee decisions require real analysis)
• Blended family with children from prior relationships
• Real property in multiple states
• Business ownership or partnership interests
• A beneficiary with special needs (a standard will bequest can disqualify them from government benefits)
• Significant assets that might trigger estate tax considerations

• Minor children requiring guardian and trustee decisions
• Blended families with children from prior relationships
• Real estate in more than one state
• Business ownership or LLC/partnership interests
• Beneficiaries with special needs on government benefit programs
• Estates approaching federal or state tax thresholds

Get this step wrong and everything else is wasted effort. The execution ceremony — formal as that sounds — has a specific sequence for a reason.

Step 1: All parties must be physically present in the same room at the same time. Remote signings are not valid for Arizona wills under current law (unlike some pandemic-era exceptions that have since expired).

Step 2: You sign first, or acknowledge to the witnesses that the signature already on the document is yours.

Step 3: Both witnesses then sign. Witnesses should not be named beneficiaries in the will — it's not automatically disqualifying under Arizona law, but it creates grounds for a challenge and puts the witness in an uncomfortable evidentiary position.

Step 4: If you want a self-proving affidavit (and you should), everyone then signs again before a notary public. The notary fee runs $5–$25 per signature in Arizona — worth every cent.

Store the original in a fireproof location. Tell your personal representative exactly where it is. A will that can't be found is treated, in most cases, as if it doesn't exist.

Because Arizona follows the Uniform Probate Code, its rules are somewhat more flexible than states that use older common-law will frameworks. A few provisions that catch people off guard:

• Revocation by physical act: You can revoke a will by destroying it — burning, tearing, or obliterating it — but someone else must do so in your presence and at your direction if you're physically unable
• Divorce automatically revokes: Under Arizona Revised Statutes § 14-2804, a divorce or annulment automatically revokes any provisions in your will that benefit your former spouse. If you remarry and want your new spouse to inherit, you need a new will.
• No "pretermitted heir" protection for spouses: Arizona does protect children born or adopted after the will was executed (pretermitted heirs), but the community property rules effectively protect spouses instead
• Handwritten additions to typed wills: Adding handwritten changes to a typed will doesn't make those changes valid unless you execute a proper amendment (called a codicil) with witnesses — or rewrite the entire will

Arizona does not have a separate state estate tax. The federal estate tax exemption for 2026 is approximately $13.99 million per individual, meaning most estates won't face federal estate tax either. That said, high-value estates should still plan around income tax implications for inherited assets.

• Divorce automatically revokes spousal provisions under ARS § 14-2804
• Children born after the will was signed receive protection as pretermitted heirs
• Handwritten additions to typed wills are not valid amendments without proper re-execution
• Revocation requires destruction of the will — intentional and either by you or at your direction
• No Arizona state estate tax; federal exemption approximately $13.99 million in 2026

Writing the will is the beginning, not the finish line. A will sitting in a drawer, disconnected from your broader estate picture, leaves work undone.

Review beneficiary designations on every financial account and insurance policy. Those designations control the asset — full stop. A will that contradicts an outdated beneficiary designation loses every time. I've seen a deceased parent's ex-spouse collect a life insurance payout because nobody updated the policy for eleven years after the divorce.

Consider whether a revocable living trust makes sense alongside the will. In Arizona, probate is relatively streamlined compared to states like California, but it still takes time — typically 4–12 months — and costs money. A trust sidesteps probate entirely for the assets it holds. The tradeoff is upfront cost: a basic trust package in Arizona runs $1,500–$3,500 with an attorney.

Update your will after any major life change: marriage, divorce, birth of a child, death of a beneficiary, significant asset acquisition or sale, or relocation to a different state. "I'll get to it" is the most expensive sentence in estate planning.