Almost every adult should have a will. If you own anything of value, have children who depend on you, or care at all about who receives your property after you die, a will is the document that puts those decisions in your hands instead of the state’s. The legal requirements are modest, and the cost of skipping it falls on the people you leave behind.
The question is less whether you need one and more what you lose by not having one. The answer runs through four areas: who inherits, who raises your children, who manages the estate, and how quickly any of it gets resolved.
What Happens If You Don’t Have One
Dying without a valid will means dying “intestate.” The state where you lived then decides who gets your property, using a fixed priority list written into its intestacy statutes. The details vary by state, but the pattern is consistent: a surviving spouse and children come first, followed by parents, siblings, and more distant relatives.1Legal Information Institute. Intestate Succession The court follows that hierarchy whether or not it reflects what you would have chosen.
The people most hurt by this framework are the ones who fall outside bloodlines and marriage. An unmarried partner you lived with for twenty years inherits nothing under intestacy in most states. A close friend, a stepchild you never formally adopted, a charity you cared about — none of them appear on the statutory list. The only way to include any of them is to name them in a will.
Intestacy also means the court appoints an administrator to handle the estate rather than someone you picked. For a surviving family, that often means more delay, more paperwork, and sometimes a stranger making decisions about assets and timing.
If You Have Minor Children, This Is the Reason
For parents of young children, guardianship is the single strongest argument for having a will. A will lets you nominate the person you want to raise your children if both parents die or become unable to care for them. No other document does this as directly. Courts give heavy weight to a parent’s written nomination, and while a judge technically has the final say, departing from the parent’s stated choice is rare absent serious concerns about the nominee’s fitness.
Without that nomination, relatives can compete for guardianship, and the process can turn adversarial quickly. The court has no way to know you would have preferred your sister over your mother-in-law, or that you specifically did not want a particular family member involved. Writing it down removes the guesswork at exactly the moment your children most need stability.
What a Will Lets You Decide
A will does more than route property. It gives you several controls that intestacy simply doesn’t offer.
Your Choice of Executor
Your will names an executor (called a “personal representative” in some states) who gathers assets, pays debts, files final tax returns, and distributes property under your instructions. Picking someone you trust, and who is organized enough to handle paperwork and deadlines, makes the whole process smoother for your family. Without a will, the court picks that person for you.
Specific Gifts and a Residuary Clause
A will lets you leave particular items or dollar amounts to specific people or organizations. You can direct your grandmother’s ring to your niece, leave a cash gift to a favorite charity, or divide property in unequal shares if that is what makes sense. A residuary clause then sweeps up everything else and sends it where you want. Without one, leftover assets fall back under the intestacy formula anyway.
A No-Contest Clause
If you expect someone to challenge your wishes, a no-contest clause can discourage it. These provisions say that any beneficiary who contests the will and loses forfeits their inheritance. The clause only bites if the potential challenger stands to receive something meaningful under the will; a person already disinherited has nothing to lose. Enforceability varies by state, but in most jurisdictions the clause adds a real deterrent.
What a Will Won’t Do
Two blind spots trip people up often enough that they’re worth stating plainly.
Beneficiary Designations Override Your Will
Several common asset types transfer automatically at death based on their own rules, regardless of what your will says. These include:
- Retirement accounts and life insurance, which pass to whoever is listed on the beneficiary designation form. For ERISA-governed retirement plans, the plan administrator must follow the designation on file even when a divorce decree or will says otherwise.2U.S. Department of Labor. Current Challenges and Best Practices Concerning Beneficiary Designations in Retirement and Life Insurance Plans
- Bank accounts and real estate titled as joint tenants with right of survivorship, which pass directly to the surviving co-owner.
- Payable-on-death and transfer-on-death accounts, which send the balance straight to the named beneficiary without probate.
- Property held in a revocable living trust, which is distributed by the trust’s terms.
People routinely update a will to leave everything to a new spouse but forget that an ex is still listed as beneficiary on a $500,000 life insurance policy. The beneficiary form wins that fight every time. Whenever you update your will, review every designation.
A Will Does Nothing While You’re Alive
A will only takes effect after you die. It can’t help if you are incapacitated by illness or injury and can’t manage your own finances or medical decisions. Two other documents fill that gap:
A durable power of attorney lets you name someone to handle financial matters — paying bills, managing investments, filing taxes — if you can’t do so yourself. The “durable” part means the authority survives your incapacity. Without one, your family may need to go to court for a conservatorship just to access your bank account.
A healthcare directive (sometimes called a living will or advance directive) tells doctors how you want to be treated if you can’t communicate your medical decisions.3National Institute on Aging. Preparing a Living Will A healthcare power of attorney names the person authorized to make those decisions on your behalf. Neither is part of a last will and testament; both belong in any complete estate plan.
What Makes a Will Valid
The bar for a valid will is not high, which is part of why skipping it is hard to justify. State rules vary somewhat, but the core requirements are consistent:
- The will must be in writing. Most are typed, though roughly half the states also recognize holographic wills written entirely in the testator’s handwriting, which typically don’t require witnesses.4Legal Information Institute. Holographic Will
- You must sign it yourself, or direct someone to sign in your presence if you physically can’t.
- Typed wills generally need two witnesses who watch you sign (or hear you acknowledge your signature) and then sign the document themselves. Witnesses should not be beneficiaries.
- You must be of sound mind when you sign: you understand you’re making a will, you have a general sense of what you own, and you recognize the people who would naturally inherit from you.
One extra step is worth taking. A self-proving affidavit, signed by your witnesses in front of a notary at the time you execute the will, eliminates the need to track down witnesses during probate to confirm the will’s authenticity. That can save weeks or months.5Legal Information Institute. Self-Proving Will
When to Revisit It
Writing a will isn’t a one-time event. Several life changes should trigger a review:
- Marriage, divorce, or remarriage. A new marriage may partially revoke an existing will under some state laws. After a divorce, many states automatically void provisions benefiting a former spouse, but not all, and relying on that default is risky.
- Birth or adoption of a child. Children born or adopted after a will is signed may be entitled to a share as “pretermitted heirs” if the will doesn’t account for them.
- Death of a beneficiary or executor. Provisions naming them may lapse, creating unintended gaps.
- Major financial changes. Buying or selling a home, receiving an inheritance, starting a business, or a significant shift in net worth all warrant a fresh look.
- Moving to a different state. A will that was perfectly valid where you used to live may have technical issues in your new state.
Even without a triggering event, a review every three to five years is a reasonable rhythm. Minor changes can go in a codicil, a formal written amendment executed with the same witness requirements as the original. For anything substantial, drafting an entirely new will that explicitly revokes all prior versions is cleaner than stacking codicils onto an aging document.