A last will and testament is the document that tells a probate court who should receive your property after you die, who should raise your minor children, and who should run the whole process. To be valid in nearly every state, you must be at least 18 and of sound mind, and you must sign the document in front of two witnesses who also sign it. Without a valid will, state intestacy law decides where your property goes, following a rigid family hierarchy that rarely matches what people actually want.
Who Can Legally Make a Will
Under the Uniform Probate Code, which most states have adopted in whole or in part, any person at least 18 years old and of sound mind can make a valid will. A handful of states allow younger people to make wills if they are legally emancipated or serving in the military, but 18 is the baseline nearly everywhere.
The “sound mind” requirement, called testamentary capacity, is a lower bar than most people expect. You don’t need to pass a cognitive exam. Courts look at four things: whether you understood you were making a will, whether you knew roughly what you owned, whether you could identify your close family members, and whether you could form a basic plan for how your property should be distributed. Someone with early-stage dementia might still have testamentary capacity on a good day. The question is always whether capacity existed at the moment of signing.
You also need testamentary intent, meaning you understood the document would control what happens to your property after death. A letter saying “I’d like my daughter to have my house” may not qualify if it reads more like a wish than a binding directive. Explicit phrasing such as “I declare this to be my last will” removes the ambiguity.
What to Put in Your Will
Start with a thorough inventory of what you own: real estate, bank accounts, investment portfolios, vehicles, and personal items with financial or sentimental value. You don’t need to list every fork and lamp, but anything you want a specific person to receive should be identified clearly. Be precise. “My house” works if you own one property; if you own two, use the address.
Name your beneficiaries with full legal names and their relationship to you. “My niece” invites confusion when you have four of them. For every primary beneficiary, name a backup. If a primary beneficiary dies before you do and no alternate is listed, the gift either falls into the residual estate or passes under intestacy rules, neither of which reflects your original thinking.
Your Executor
The executor steers your estate through probate. They gather assets, pay outstanding debts, file your final tax returns, and distribute what’s left. Pick someone organized and reliable. The job can stretch over several months or even a year for complicated estates, and it involves dealing with banks, courts, and occasionally difficult family members. Name a backup in case your first choice can’t serve.
Executors are entitled to compensation, and the amount varies by state. Some states set a fee schedule based on a percentage of the estate’s value, with rates that typically decrease as the estate grows larger. Others allow a “reasonable fee” set by the probate court. You can also fix the compensation in the will itself, which overrides the default state formula. Many family members serving as executor waive the fee, but anyone taking on this role for a non-family estate should know they can be paid.
A Guardian for Minor Children
If you have children under 18, your will is the primary tool for naming who should raise them if you die. Without a guardian nomination, a court picks someone based on its own assessment of the child’s best interests, and that person may not be who you would have chosen. Name at least one alternate in case your first choice cannot or will not serve. Courts give strong weight to a parent’s nomination, though they aren’t absolutely bound by it if the named guardian appears unfit.
Debts
Your estate pays your debts before beneficiaries receive anything. Executors follow a priority order that generally puts administrative costs and funeral expenses first, then taxes, secured debts, medical bills from a final illness, and finally unsecured creditors. If the estate doesn’t have enough to cover everything, lower-priority debts go unpaid and beneficiaries may receive reduced shares or nothing. You can spell out your preferences for handling debt payments, but the statutory priority still controls what must be paid first.
How to Sign It So It Holds Up
A will means nothing until it’s properly signed. Most states follow the Uniform Probate Code framework: you sign the will yourself, or someone else signs your name in your presence and at your direction if you’re physically unable. Two witnesses must then sign the document within a reasonable time after watching you sign or after you acknowledge your signature to them.
Witnesses should be disinterested, meaning they don’t inherit anything under the will. A slim majority of states have what’s called a purging statute: if a beneficiary serves as a witness, that person forfeits whatever they were supposed to receive, or at least any amount exceeding what they would have inherited without a will. Some UPC states don’t penalize interested witnesses at all, but there is no reason to take the risk. Use neighbors, coworkers, or any competent adult not mentioned in the document.
Self-Proving Affidavits
A self-proving affidavit is a notarized statement attached to the will in which you and your witnesses swear under oath that the signing followed all legal requirements. Without one, the probate court has to track down your witnesses after you die and get them to confirm the will is authentic. If a witness has moved, become incapacitated, or died, that confirmation gets expensive and slow. A self-proving affidavit eliminates the step entirely.
All but a few jurisdictions allow self-proving wills. You and your witnesses sign the affidavit in front of a notary public, who stamps and signs the document. Notary fees for a standard acknowledgment run from about $2 to $25 per signature depending on where you live, with some states setting no maximum. For the small cost, skipping it is hard to justify.
Assets That Pass Outside Your Will
A will does not control everything you own. Several major asset types transfer automatically to a named beneficiary at death, bypassing your will and probate entirely.
- Retirement accounts such as IRAs and 401(k)s pass to whoever is listed on the beneficiary designation form filed with the plan administrator.
- Life insurance death benefits go to the beneficiary named on the policy, regardless of what your will says.
- Real estate or accounts held in joint tenancy with right of survivorship automatically transfer to the surviving owner.
- Bank accounts, CDs, and brokerage accounts with a payable-on-death or transfer-on-death designation pass directly to the named person. The beneficiary typically just needs a death certificate and ID.
Beneficiary designations override your will. If your will leaves your IRA to your son but the beneficiary form at your brokerage still names your ex-spouse, your ex-spouse gets the account. The financial institution follows its own records. Review every designation after major life events like marriage, divorce, or the birth of a child, and treat that review as just as important as updating the will.
Handwritten and Electronic Wills
Holographic Wills
A holographic will is written entirely in the testator’s own handwriting and signed by them, with no witnesses required. Roughly half the states recognize holographic wills, and the UPC explicitly permits them as long as the signature and the material portions of the document are in the testator’s handwriting. Typed text or pre-printed form language mixed in can invalidate the will in some jurisdictions.
Handwritten wills are better than dying with no will at all, but they are a frequent source of litigation. Handwriting can be hard to authenticate, the informal format invites ambiguity, and courts spend more time and money sorting out what the person meant. If you are using one as a stopgap until you can get a formal will prepared, date it clearly and write out your intentions as specifically as possible.
Electronic Wills
A small but growing number of states now allow wills to be created, signed, and witnessed electronically. These laws generally require the document to be readable as text, signed with an electronic signature showing intent to authenticate, and witnessed by at least two people or acknowledged before a notary. Some states allow remote witnessing by video; others still require everyone to be physically present.
As of 2025, roughly a dozen states have enacted some form of electronic will legislation, including through adoption of the Uniform Electronic Wills Act or similar frameworks. This area of law is changing quickly. If you are considering an electronic will, check whether your state currently authorizes one. An electronic will executed in a state that doesn’t recognize it could be challenged as invalid.
Changing or Revoking a Will
You can revoke your will at any time while you are alive and competent. The two recognized methods are creating a new will that expressly revokes the old one, or physically destroying the original with intent to revoke. Tearing, burning, or shredding all qualify, but intent matters as much as the act. Accidentally spilling coffee on your will doesn’t revoke it. Someone else can destroy the document for you, but only if done in your presence and at your direction.
For smaller changes, a codicil amends specific provisions without rewriting the whole will. A codicil must be executed with the same formality as the original, including witnesses and, ideally, a self-proving affidavit. Codicils made sense in the typewriter era. Today it is usually simpler to draft a new will that revokes the old one. Stacked codicils create confusion and invite challenges.
Life events can change your will by operation of law. In most states, divorce automatically revokes any provisions benefiting your former spouse, as if they had died before you. Marriage can run the other way: if you made a will before marrying and never updated it, your new spouse may be entitled to claim a share as if no will existed. The birth or adoption of a child after signing can trigger similar protections. Revisit the will after every significant change in your family or finances.
Where to Keep It
Probate courts want the original signed document. Photocopies are either rejected outright or accepted only after a difficult proceeding where you prove the original wasn’t intentionally destroyed. If the original can’t be found, many states presume the testator revoked it on purpose. That presumption can effectively erase your entire estate plan.
A fireproof safe at home is the most common storage choice, but make sure your executor knows the combination or has a key. Bank safe deposit boxes offer good protection, though some states require a court order before anyone, including a named executor, can open a deceased person’s box. Some jurisdictions let you file the original will with the local court clerk for a modest storage fee, which eliminates the access problem but means retrieving and refiling if you ever make changes.
Tell your executor exactly where the will is stored and how to access it. Leave written instructions somewhere easy to find, separate from the will itself. Letting a backup executor or trusted family member know the location adds a safeguard. The best-drafted will is worthless if nobody can find it.
Digital Assets
Email accounts, social media profiles, cloud storage, cryptocurrency wallets, and online financial accounts need a plan too. Nearly every state has adopted the Revised Uniform Fiduciary Access to Digital Assets Act, which gives executors legal authority to manage a deceased person’s digital property. Under that framework, an executor can access digital assets by providing the account custodian with a death certificate, proof of appointment, and in some cases a court order or evidence linking the account to the deceased.
Keep a secure, updated list of your digital accounts, usernames, and instructions for access. Some platforms let you designate a legacy contact or set preferences for what happens after death. Including language in your will that expressly authorizes your executor to access digital accounts strengthens their legal position when dealing with tech companies that might otherwise refuse.
Grounds for Contesting a Will
Anyone with legal standing, usually an heir or beneficiary, can challenge a will in probate court. The three most common grounds are lack of testamentary capacity, undue influence, and fraud.
A lack-of-capacity challenge argues that the person who made the will didn’t meet the mental competency standard at the time of signing. Evidence typically focuses on medical records, witness testimony about the person’s behavior around the date of execution, and any diagnosed cognitive conditions. The burden falls on the person contesting the will, and courts are generally reluctant to throw out a signed document based on hindsight diagnoses.
Undue influence claims allege that someone pressured or manipulated the testator into writing provisions that benefited the influencer rather than reflecting the testator’s genuine wishes. Courts look for signs that the influencer had power or authority over the testator, controlled access to necessities like housing or medical care, or exploited a close relationship through coercion. Simple persuasion isn’t enough; there must be evidence the testator’s free will was overridden.
Fraud involves tricking the testator, either about the contents of the document they are signing or about facts that influenced their decisions. A classic example: telling a parent one of their children has died so they’ll leave that child’s share to someone else. Execution defects such as missing witnesses or a forged signature are also grounds for invalidation, though those challenges turn on procedural failure rather than the testator’s state of mind.
What a Will Costs
Attorney fees for a straightforward will typically run several hundred dollars for an individual and somewhat more for a couple doing mirror wills. Complex estates with trusts, business interests, or blended family dynamics push costs into the low thousands. Online legal services and DIY templates are cheaper, sometimes under $100, but they offer no personalized advice and can leave gaps that become expensive problems during probate. The attorney fee is a one-time cost; mistakes from a poorly drafted will can compound for years.
After death, the executor files the will with the probate court and petitions to open the estate. Court filing fees vary by state and are often based on the estimated value of the estate, ranging from under $100 for small estates to over $1,000 for large ones. Additional costs can include court-appointed appraisals, publication fees to notify creditors, and attorney fees if the estate needs legal guidance during administration.
Many states offer simplified procedures for smaller estates that skip full probate. Thresholds vary but generally apply to estates valued below roughly $50,000 to $185,000 depending on the state. If the estate qualifies, beneficiaries can collect assets using a small estate affidavit rather than going through months of court proceedings. Knowing whether your estate might qualify for this streamlined treatment helps set realistic expectations for your family.
One tax note worth flagging: for anyone dying in 2026, the federal estate tax exclusion is $15,000,000 per individual.1Office of the Law Revision Counsel. 26 USC 2010 Unified Credit Against Estate Tax The threshold adjusts for inflation starting in 2027.2Internal Revenue Service. Whats New Estate and Gift Tax Married couples can effectively shelter up to $30,000,000 through portability, which lets a surviving spouse use any portion of the deceased spouse’s unused exclusion. Portability isn’t automatic; the executor must file an estate tax return for the first spouse to die and elect it, even if no tax is owed. A few states impose their own estate or inheritance taxes with much lower exemptions. If your estate is anywhere near these numbers, a will alone isn’t enough planning, and an estate planning attorney becomes worth the fee.