Yes, you can change your will at any time, as long as you have the mental capacity to do so. The change can be a small amendment through a codicil or a full replacement with a new will, but either way it must be executed with the same legal formalities as the original document. Skip those formalities and a probate court will ignore the change and fall back on the last valid version.
Codicil or New Will
You have two ways to modify a will. A codicil is a supplement that amends or partially revokes the existing document.1Legal Information Institute. Codicil It has to be signed and witnessed exactly like a will. Codicils fit truly minor tweaks: swapping an executor who moved away, bumping a specific dollar amount left to a charity, correcting a name.
For anything bigger, write a new will. Stacking codicils on top of a will creates confusion in probate, because the court has to reconcile each amendment against the original. A new document wipes the slate clean. It should state explicitly that it revokes all prior wills and codicils, which removes any argument about which version controls.2Justia. How to Legally Change or Revoke a Will Drafting a fresh will usually costs about the same as a codicil, so the added clarity is cheap insurance.
Executing the Change So It Holds Up
Two things make any change legally valid: your capacity at the time of signing, and proper execution of the document.
Testamentary capacity means you’re of legal age (18 in most states) and of sound mind when you sign.3Legal Information Institute. Testamentary Capacity Sound mind doesn’t require perfect memory or sharp judgment. It means you understand what you own, who would naturally inherit from you, and how your will distributes that property.4Justia. Lack of Testamentary Capacity Legally Invalidating a Will
For execution, the Uniform Probate Code requires that a will be in writing, signed by you (or by someone at your direction while you’re present), and either signed by at least two witnesses or acknowledged before a notary.5Legal Information Institute. Uniform Probate Code States that haven’t adopted the UPC have their own rules, but the two-witness standard is the common thread. Witnesses should be “disinterested,” meaning they don’t inherit under the will. A witness who stands to benefit gives someone grounds to challenge the document later.
Add a self-proving affidavit if your state allows one. It’s a sworn statement signed by your witnesses in front of a notary at the time of execution, confirming they watched you sign willingly and that you appeared mentally competent. It saves your executor from having to track those witnesses down after your death to testify in probate court. Nearly every state recognizes self-proving affidavits.6Legal Information Institute. Self-Proving Will
Revoking the Old Will
Revocation is clean when done right and a mess when it isn’t. The UPC recognizes two main methods.
The first is executing a new will that expressly revokes the old one, or whose terms are inconsistent enough with the old will that they replace it. A revocation clause at the top of the new will (“I revoke all prior wills and codicils”) is standard and eliminates disputes about which document controls.2Justia. How to Legally Change or Revoke a Will
The second is physically destroying the will — burning, tearing, or obliterating it — with the intent to revoke. Intent is everything. A coffee spill or a house fire doesn’t count. And there’s a practical trap: if copies exist that you didn’t destroy, a probate court in some states may treat those copies as valid. Most courts also presume that a will last in the testator’s possession but not found at death was intentionally destroyed, which can cut either way depending on your actual wishes.
Some states additionally allow revocation through a separate written declaration that follows the same execution formalities as a will. Even so, the safest path is a new will with an explicit revocation clause.
Life Events That Change Your Will Without You Touching It
Certain events can alter or partially override your will by operation of law, even if you never open the document again.
Divorce
In nearly every state, a finalized divorce automatically revokes any will provisions that benefit your former spouse. That covers property transfers, powers of appointment, and any nomination of your ex as executor or trustee. In UPC states, the revocation extends to your ex-spouse’s relatives too. The rest of the will stays intact. The presumption can be overcome only in narrow circumstances, such as when the will expressly provides that the provisions should survive a divorce.
This is a safety net, not a plan. Revoked provisions typically get treated as though the ex-spouse predeceased you, which can send assets to people you didn’t intend. Updating your will after a divorce is one of the most important estate planning steps you can take.
Marriage
If you marry after making your will and never update it, your new spouse may be entitled to an intestate share of your estate — the same share they’d receive if you had died without a will at all. Most states have “pretermitted spouse” statutes that protect a surviving spouse who was unintentionally left out. The protection usually doesn’t apply if you provided for the spouse another way, like through a prenuptial agreement or non-probate transfers, and that intent can be shown.
Birth or Adoption of a Child
A child born or adopted after your will was last executed may be classified as a “pretermitted heir.” Under most state statutes, a pretermitted heir receives the same share they would have received if you had died without a will.7Legal Information Institute. Pretermitted Heir The reasoning: if the child had existed when you wrote the will, the law presumes you would have included them. If the will clearly shows you intended to leave the child out, and some states require that intent to appear on the face of the document, the statute won’t override your wishes.
The common thread across all three: don’t rely on automatic protections to match what you actually want. Review and update your will after any major family change.
Assets Your Will Doesn’t Control
Changing your will doesn’t change everything. A significant portion of most people’s wealth passes outside probate through mechanisms that override whatever the will says.
- Beneficiary designations on retirement accounts (401(k)s and IRAs), life insurance policies, and payable-on-death bank accounts pass to whoever is named on the form, regardless of your will. For employer-sponsored retirement plans, federal law under ERISA applies, and the U.S. Supreme Court has held that plan administrators must follow the beneficiary designation on file even when a divorce decree or will says otherwise.8U.S. Department of Labor. Current Challenges and Best Practices Concerning Beneficiary Designations in Retirement and Life Insurance Plans
- Property held in joint tenancy with right of survivorship passes automatically to the surviving owner at death. Your will has no say.
- Real estate with a transfer-on-death deed and investment accounts with TOD registrations transfer directly to the named beneficiary, bypassing probate.
When you update your will, review every beneficiary designation and ownership arrangement you have. A will leaving everything to your children means nothing if your ex-spouse is still named on your life insurance and retirement accounts.
What Happens When a Change Is Done Wrong
Courts have no flexibility on execution. A change that doesn’t meet the legal requirements, whether missing witness signatures, an unsigned codicil, or handwritten notes in the margins, gets thrown out. The court falls back on the most recent valid version of the will, or on the original if no valid amendments exist.
The damage is worst when the failed change was meant to address a major life event. If you intended to disinherit a former spouse, add a new child, or redirect a substantial bequest and the paperwork was defective, the estate gets distributed under the old terms. Wrong people inherit, intended beneficiaries get nothing, and families end up in litigation that drains the estate.
About half the states recognize holographic wills, which are documents written entirely in the testator’s handwriting and signed, without witnesses.9Legal Information Institute. Holographic Will In those states, a handwritten will or codicil can be valid. The remaining states either don’t recognize them at all or limit them to narrow situations like active military service. Relying on a handwritten change without knowing your state’s rules is a gamble.
Storing the Updated Will and Telling the Right People
A perfectly executed will nobody can find creates the same problems as no will at all. Courts generally presume that a will last known to be in the testator’s possession but missing at death was intentionally destroyed. That presumption can push your estate into intestacy.
Store the original somewhere secure but accessible: a fireproof safe at home, a safe deposit box (though these can be hard for an executor to access quickly), or your estate attorney’s office. Some states let you file your will directly with the probate court or county clerk for safekeeping. Wherever it lives, your executor needs to know the location.
When you create a new will, physically destroy all copies of the old one. Outdated versions floating around invite confusion and litigation over which document controls.
You’re not legally required to share the contents of your will with anyone while you’re alive. But your executor needs to know the will exists, where it’s stored, and that you’ve named them. Give them a copy of the updated document so they can prepare and ask questions while you’re still around to answer. If your will creates or modifies a trust, the trustee should receive the relevant provisions. Notifying beneficiaries is optional and depends on your family. The people in fiduciary roles should never be left guessing.