How to Write a Will: A Step-by-Step Guide
Key takeaways
- You can write a legally valid will yourself, online, or with an attorney. The best route depends on how large and complex your estate is.
- Every valid will needs the same core ingredients: an adult of sound mind, a clear statement of intent, named beneficiaries, a signature, and (in most states) two witnesses.
- A will is the only place you can name a guardian for minor children, which makes it essential for every parent.
- Writing the will is not the last step. You must sign it correctly, store it safely, tell your executor where it is, and update it after major life events.
A will, formally a last will and testament, is the document that tells the world who should receive your property after you die, who should manage that process, and who should raise your children if they are still minors. Writing one is one of the most important and most postponed financial tasks in adult life, and the good news is that it is more approachable than most people expect.
At a high level, writing a will means deciding what you own, who you want to receive it, and who you trust to carry out your wishes, then putting those decisions in writing and signing the document in front of witnesses. Depending on your situation, you can do this in an afternoon with an online service for under $100, or work with an estate planning attorney for a few hundred to a few thousand dollars.
This guide walks through the entire process step by step: what to gather first, how to make each decision, the legal requirements that make a will valid, what to include and what to leave out, and the mistakes that most often cause wills to fail. Real-world examples show how each choice plays out in practice.
What to Gather Before You Start
Most of the work of writing a will happens before you write a single line. Spending half an hour collecting the right information makes the rest of the process much faster and helps you avoid leaving anything out. Gather the following so it is in front of you when you begin.
Your will-writing checklist
- A list of your major assets (home, vehicles, accounts)
- Account numbers and institutions for bank and investment accounts
- Retirement accounts and life insurance with their named beneficiaries
- Any business interests you own
- Valuable personal items (jewelry, art, collectibles, heirlooms)
- Outstanding debts and liabilities
- The full legal names of your intended beneficiaries
- The name of your chosen executor and a backup
- A guardian and alternate for any minor children
- Your state’s signing and witness requirements
One distinction is worth understanding up front. Some of your assets will not pass through your will at all. Retirement accounts, life insurance, and payable-on-death bank accounts go directly to whoever you named as beneficiary on those accounts, and jointly owned property usually passes automatically to the surviving co-owner. Your will controls everything else. Knowing which is which keeps you from writing instructions that conflict with your beneficiary designations.
If your will says one thing and a beneficiary form says another, the beneficiary form almost always wins. Review the named beneficiaries on your retirement and insurance accounts at the same time you write your will so they tell a consistent story.
How to Write a Will in 8 Steps
Decide how to create your will
Your first decision is the method. You can write the will yourself, use an online will service such as Trust & Will, LegalZoom, or Nolo WillMaker, or hire an estate planning attorney. A do-it-yourself or online will is appropriate for straightforward estates: a single state of residence, uncomplicated family situation, and no unusual assets. An attorney is worth the cost for blended families, business owners, larger estates, a beneficiary with special needs, or anyone who wants to also set up trusts or powers of attorney at the same time.
Take inventory of your assets
Write down everything you own of meaningful value: real estate, vehicles, bank and investment accounts, business interests, and personal property such as jewelry, art, or family heirlooms. Note which assets already have named beneficiaries, because those pass outside the will. The goal is a clear picture of what your will actually needs to distribute so nothing valuable is accidentally left out.
Choose your beneficiaries
Decide who will receive your assets. Beneficiaries can be individuals, such as your spouse, children, relatives, or friends, or organizations such as charities. Be specific and use full legal names. If you want to divide things by percentage (for example, equal thirds among three children) or leave specific items to specific people, decide that now. It is also wise to name alternate beneficiaries in case someone you named dies before you do.
Name an executor
Your executor (called a personal representative in some states) is the person who carries out your will: filing it with the probate court, paying debts and taxes, and distributing assets to your beneficiaries. Choose someone organized, trustworthy, and willing to take on the responsibility, and always name a backup in case your first choice cannot serve. The executor can be a beneficiary, such as your spouse or an adult child.
Name a guardian for minor children
If you have children under 18, naming a guardian is one of the most important reasons to write a will. This is the person who will raise your children if both parents die. Talk to the person first to make sure they are willing, and name an alternate. Without this designation, a court decides who raises your children, with no guidance from you.
Write out your instructions
Now put it in writing. State clearly that the document is your will, identify yourself, revoke any prior wills, name your executor and guardian, and spell out how your assets should be distributed. Include a residuary clause that says who receives anything not specifically mentioned. This single clause catches assets you forgot or acquired after writing the will, and prevents part of your estate from passing under state intestacy law.
Sign and witness the will
A will is not valid until it is signed correctly. In most states you must sign it in the presence of at least two adult witnesses who are not beneficiaries, and those witnesses then sign as well. Many states also let you attach a self-proving affidavit, a short notarized statement that confirms the signing was proper. It is optional but highly recommended, because it lets the court accept the will later without tracking down your witnesses.
Store it safely and keep it updated
Keep the signed original somewhere safe and accessible, such as a fireproof home safe or with your attorney, and tell your executor exactly where to find it. Avoid storing the only copy in a bank safe deposit box that could be sealed at your death. Finally, review the will every few years and after any major life change so it always reflects your current wishes.
Priya, a 34-year-old teacher in Oregon with one young child, sets aside an afternoon to write her will. She lists her condo, her car, a savings account, and her 401(k) (which already names her husband as beneficiary). She leaves everything to her husband, names her sister as guardian for her daughter with her brother as alternate, and appoints her husband as executor with her sister as backup. She uses an online service for $90, signs it in front of two coworkers, and adds a self-proving affidavit at a notary. The entire process takes about two hours.
What Makes a Will Legally Valid?
The exact rules vary by state, but nearly every valid will shares the same core requirements. Understanding them helps you avoid the technical errors that cause courts to reject a will.
Age and mental capacity
You must be an adult, generally at least 18 (a few states allow younger people who are married or in the military), and of sound mind. Being of sound mind means you understand that you are creating a will, you know in general what you own, and you recognize who your natural heirs are. Most adults easily meet this bar, but capacity can become an issue with wills written late in life or during serious illness, which is one reason to write your will well before any health crisis.
In writing and clearly your will
A will must be in writing, and it must make clear that it is intended to be your will rather than a draft, a letter, or a wish list. A simple opening line such as “I declare this to be my last will and testament” accomplishes this. Spoken (oral) wills are not valid in most states except in narrow emergency circumstances.
Signed and witnessed
You must sign the will, or direct someone to sign it for you in your presence if you are physically unable. Most states then require at least two competent adult witnesses who watch you sign and sign the will themselves. Critically, witnesses generally should not be beneficiaries, because a gift to a witness can be voided in some states. Choose neutral witnesses such as coworkers, neighbors, or friends who inherit nothing.
The most common reason a will is challenged or rejected is improper signing and witnessing. Follow your state’s signing rules exactly, and when in doubt, add a self-proving affidavit at a notary.
A note on handwritten and online wills
About half of U.S. states recognize holographic wills, which are written entirely in your own handwriting and signed, sometimes without witnesses. They are legal where allowed but easier to contest, so they are best reserved for emergencies. Online and software-generated wills, by contrast, are typed and witnessed in the normal way and are valid in all 50 states as long as you follow the signing instructions.
What to Include in a Will (and What to Leave Out)
What to include
A complete will typically includes a statement identifying you and declaring the document as your will, a clause revoking any earlier wills, the appointment of your executor and a backup, the appointment of a guardian for minor children, specific gifts of particular items or amounts to named people, and a residuary clause covering everything else. Many people also add instructions for paying debts and taxes and, optionally, a note about funeral or burial preferences.
What to leave out
Some things do not belong in a will. Assets with their own beneficiary designations, such as life insurance, IRAs, and 401(k)s, pass outside the will, so naming them there only creates confusion. Jointly owned property with right of survivorship passes automatically to the co-owner. Funds you want to leave to a person with special needs should usually go through a special needs trust rather than directly through a will, to avoid disrupting government benefits. And conditions that are illegal or against public policy (for example, requiring someone to divorce to inherit) will not be enforced.
Marcus, a 58-year-old widower in North Carolina, wants to leave $50,000 to his adult son who has a disability and receives Medicaid. If he leaves the money directly through his will, the inheritance could push his son over the asset limit and cost him his benefits. His attorney instead sets up a special needs trust to receive the funds, and Marcus’s will pours that gift into the trust. His son keeps both the inheritance and his benefits.
Ways to Write a Will, Compared
There is no single right way to create a will. The three common routes trade off cost, convenience, and the level of guidance you get.
| Method | Typical cost | Best for | Watch out for |
|---|---|---|---|
| Handwritten / DIY | Free | Simple, urgent situations where no other option is available | Not valid in every state; easy to make errors; easy to contest |
| Online will service | $20 to $150 | Straightforward estates and most young families | Limited guidance for complex assets or blended families |
| Estate planning attorney | $300 to $1,000+ | Larger or complex estates, trusts, special circumstances | Higher upfront cost; find one licensed in your state |
For many people the practical answer is to start with an online will today and upgrade to attorney-drafted documents later if their estate grows more complex. A simple will created now is far better than a perfect plan you never get around to.
Common Mistakes to Avoid
Most problems with wills come from a handful of avoidable errors. Watch for these as you write and sign yours.
Improper signing or witnessing. As noted above, this is the leading cause of invalid wills. Follow your state’s rules exactly and use witnesses who are not beneficiaries.
Forgetting a residuary clause. Without a clause covering “everything else,” any asset you did not specifically mention can pass under intestacy law to people you may not have chosen.
Naming a beneficiary as a witness. In some states this voids that person’s gift. Keep your witnesses neutral.
Letting the will go stale. A will written before a divorce, a new child, or a major change in assets can produce results you never intended. Review it regularly.
Hiding the original. If your executor cannot find the signed original, the court may treat your estate as if you had no will at all. Store it safely and tell someone where it is.
Trying to control assets the will does not govern. Leaving your life insurance “to my daughter” in your will does nothing if the policy names someone else. Update the beneficiary forms instead.
After his divorce, Greg, a 47-year-old in Pennsylvania, never updated the will he wrote while married. When he died, his old will still named his ex-wife as primary beneficiary and executor. While many states automatically revoke gifts to an ex-spouse, the resulting confusion and a contested probate delayed his estate for over a year and cost his children thousands in legal fees. A 20-minute update after the divorce would have prevented all of it.
Frequently Asked Questions
Can I write my own will without a lawyer?
Yes. In every U.S. state you can legally write your own will without a lawyer, either by hand or using an online will service. As long as the will meets your state’s requirements for age, mental capacity, signature, and witnesses, it is valid. A lawyer is recommended for larger or more complex estates.
What makes a will legally valid?
To be valid, a will generally must be created by an adult of sound mind, be in writing, clearly state that it is your will, name beneficiaries, and be signed by you in front of at least two adult witnesses who are not beneficiaries. Exact requirements vary by state.
Do I need to notarize my will?
In most states a will does not need to be notarized to be valid. However, attaching a notarized self-proving affidavit makes the will easier to admit to probate because the court does not need to contact your witnesses later.
How many witnesses does a will need?
Most states require at least two witnesses who are adults and not beneficiaries of the will. They must watch you sign and then sign the will themselves. A few states allow handwritten (holographic) wills with no witnesses.
What is a handwritten will and is it legal?
A handwritten will, also called a holographic will, is one written entirely in your own handwriting and signed by you. Roughly half of U.S. states recognize them, often without witnesses, but they are easier to challenge. A typed, witnessed will is safer.
How often should I update my will?
Review your will every three to five years and after any major life event, such as marriage, divorce, the birth of a child, a death in the family, a large change in assets, or a move to a new state.
What happens if I die without a will?
If you die without a will (intestate), your state’s intestacy laws decide who inherits your assets, usually starting with your spouse and children. A court also appoints an administrator and decides guardianship of minor children without your input.
Where should I store my will?
Store the signed original in a safe, accessible place such as a fireproof home safe or with your attorney, and tell your executor where to find it. Avoid a bank safe deposit box if it may be sealed at your death, which can delay access.