Do Your Own Will: How to Write a Legally Valid DIY Will (2026 Guide)

This is general information about how wills work, not advice for your specific situation. Wills are governed by state law, laws change, and your circumstances may call for a licensed attorney. The goal here is to explain the basic rules so you can decide your next step.

You can write your own will without a lawyer, and for many people a do-it-yourself will is completely valid. The catch is that a will only works if it follows a short list of formal rules set by your state — get one of them wrong and the document can be challenged or thrown out. This guide walks through who can make a DIY will, how many witnesses you need, when a handwritten will counts, and the mistakes that most often void a homemade will, with each rule tied back to a primary source.

Can I legally write my own will without a lawyer?

Yes — in California, any person who is at least 18 years old and of sound mind can make their own will, and hiring a lawyer is optional. Those two threshold requirements come straight from Cal. Prob. Code § 6100: you must be an adult, and you must have the mental capacity to understand what you are signing. Nothing in the statute requires an attorney, a law firm, or a court filing while you are alive.

Because wills are governed by state law, the details vary from state to state — but "adult and of sound mind" is the near-universal starting point. Doing it yourself is legal; doing it correctly is what actually matters.

What makes a do-it-yourself will legally valid?

A typical DIY will must be (1) in writing, (2) signed by the person making it, and (3) witnessed by at least two people. That three-part test is set out in Cal. Prob. Code § 6110, the core execution statute for formal wills in the state.

The signature can be made by you, by someone signing your name in your presence and at your direction, or by a conservator under court order. California does not require your will to be typed, professionally drafted, recorded, or filed anywhere while you are alive — a clean, signed, properly witnessed document is enough. If you want the state's own pre-approved template, California even publishes a fill-in-the-blank statutory will form that residents can complete without adding or crossing out words.

How many witnesses does a DIY will need?

A typed do-it-yourself will generally needs at least two witnesses. Under Cal. Prob. Code § 6110, two people must witness either you signing the will or you acknowledging your signature, and they must understand that the document is your will. The exact witness count is set by each state, so if you live elsewhere, check your own state's rule rather than assuming two.

Two witnesses is the rule to follow, but it is not quite an absolute bar: the same statute contains a "harmless error" rescue. Under Cal. Prob. Code § 6110, a will that was not witnessed by two people can still be admitted to probate if the person offering it proves by clear and convincing evidence that, at the time of signing, you intended the document to be your will. That is a fallback a court may apply after your death, not a shortcut to skip witnesses — proving intent by that heightened standard is expensive and uncertain, so still get two disinterested witnesses.

Who you pick as a witness matters just as much as how many. A will is not void merely because a beneficiary served as a witness, but under Cal. Prob. Code § 6112 a gift to an "interested" (beneficiary) witness creates a presumption that the witness procured the gift by duress, menace, fraud, or undue influence — unless two other disinterested witnesses also signed. That presumption can cost the witness their inheritance, which is why the safe move is to use two witnesses who get nothing under the will.

Is a handwritten will legal without witnesses?

In California, yes. A fully handwritten will — called a holographic will — is valid with no witnesses and no notary, as long as the signature and the material provisions are in your own handwriting, under Cal. Prob. Code § 6111. That makes a holographic will the most bare-bones DIY option available.

The important caveat: holographic wills are not recognized in every state. New York, for example, permits them only for armed-forces members during combat, while states like Texas and Utah accept them under differing requirements. And a handwritten will has no witnesses to confirm it is genuine, which makes it easier to contest — so even where it is legal, it is a fallback, not a first choice.

Does a DIY will need to be notarized?

No — in California a will needs witnesses, not a notary. Cal. Prob. Code § 6110 requires two witnesses to a formal will, and notarizing the document does not substitute for them. Notarization requirements are another detail that varies by state, so confirm your own state's rule before relying on a notary stamp alone.

What DIY mistakes get a will thrown out?

The most damaging DIY errors are the ones that let someone challenge the will after you are gone. Under Cal. Prob. Code § 6104, the making or revoking of a will is ineffective to the extent it was procured by duress, menace, fraud, or undue influence — so signing under pressure, or in circumstances that look like pressure, invites a contest.

The other classic homemade mistake is using a beneficiary as a witness, which triggers the § 6112 presumption described above and can void that person's gift. Skipping the witness requirement entirely, crossing out and rewriting terms by hand, or leaving the document unsigned are the other frequent DIY failures. Doing your own will is legal — but the rules are unforgiving, so following the execution steps exactly is the whole game.

Does a will I made in another state still count?

Often, yes. A will executed under another jurisdiction's law is still validly executed in California if it complies with California's own rules, with the law of the place where it was executed, or with the law of the testator's domicile or nationality at execution or death — that is the rule in Cal. Prob. Code § 6113. So a valid out-of-state will usually travels with you when you move, though it is still worth reviewing after a relocation.

What happens if you never make a will at all?

If you die without a will, state intestacy law decides who inherits — and you get no say. Under Cal. Prob. Code § 6401, a surviving spouse takes the decedent's one-half of the community property, and of your separate property receives the entire estate if you have no children, one-half if you leave one child, or one-third if you leave more than one child. That default split may be nothing like what you would have chosen — which is the entire reason to do your own will now instead of leaving it to the statute.

Ready to put it in writing the right way? Create your will now and answer a few guided questions to produce a document built around the signing and witnessing rules above.

How do you change or revoke a DIY will?

You revoke a will either by making a new one or by physically destroying the old one with intent to revoke it. Cal. Prob. Code § 6120 says a will is revoked by a later will — expressly or by inconsistency — or by being burned, torn, canceled, obliterated, or destroyed, by you or by someone acting at your direction and in your presence, with the intent to revoke. The cleanest way to update a DIY will is to execute a fresh one rather than scribbling changes onto the old copy, since handwritten edits are exactly what create the ambiguity that fuels a will contest.

Frequently asked questions

Can I legally write my own will without a lawyer? Yes. In California, anyone at least 18 and of sound mind can make their own will under Cal. Prob. Code § 6100 — no lawyer required. It just has to be in writing, signed, and (for a typed will) witnessed by two people.

How many witnesses does a DIY will need? A typed do-it-yourself will generally needs at least two witnesses who watch you sign or acknowledge your signature, under Cal. Prob. Code § 6110. Witness rules are set by each state.

Is a handwritten will legal without witnesses? In California, yes — a handwritten (holographic) will is valid with no witnesses if the signature and material provisions are in your handwriting, under Cal. Prob. Code § 6111. But holographic wills are not recognized everywhere.

Does a DIY will need to be notarized? Not in California. Cal. Prob. Code § 6110 requires two witnesses, not a notary.

What happens if I die without a will? State intestacy law decides. In California, under Cal. Prob. Code § 6401, your spouse shares your estate with your children — one-half of your separate property with one child, one-third with more than one — which may not match your wishes.