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What to Include in a Will and Testament: A Complete Guide

June 12, 2026·6 min read·FinalKeepSake

Writing a will feels overwhelming until you break it down into its parts. At its core, a last will and testament is a legally binding document that tells the world who gets your property, who raises your children, and who is in charge of making it all happen. Get the right pieces in place and your family is protected. Leave something out, and a judge — not you — may end up making those decisions. Here is exactly what belongs in a well-drafted will, and why each piece matters.

The Legal Building Blocks Every Will Must Have

Before you get to the personal choices, a will has to clear some basic legal hurdles to be valid in the United States. Requirements vary by state, but these elements are nearly universal:

  • Declaration of intent. A clear statement at the top that this document is your last will and testament, that you are of sound mind ("testamentary capacity"), and that you are revoking any prior wills.
  • Your full legal name and address. Not a nickname — the name on your government-issued ID and financial accounts.
  • Date and signature. You must sign the will, and in virtually every state it must be dated.
  • Witnesses. Most states require two adult witnesses who are not beneficiaries of the will to sign in your presence. A handful of states allow a "holographic" (handwritten) will with no witnesses, but this is risky territory. See our guide on holographic wills for the details.
  • Notarization (optional but smart). Most states do not require notarization, but adding a self-proving affidavit — a notarized statement from you and your witnesses — makes probate faster because the court does not need to track down your witnesses later. Learn more in our guide on whether a will needs to be notarized.

Naming Your Executor

Your executor (called a "personal representative" in some states) is the person who carries out your instructions after you die. They file the will with the probate court, notify creditors, pay outstanding debts, file your final tax return, and distribute what remains to your beneficiaries. This is a significant responsibility — often taking six months to two years to complete.

Name a primary executor and at least one alternate in case your first choice is unable or unwilling to serve. Choose someone who is organized, calm under pressure, and trustworthy with money. Geographic proximity helps but is not legally required. For a deeper look at this role, read what an executor of an estate does.

Naming a Guardian for Minor Children

If you have children under 18, this may be the single most important section of your entire will. Without a named guardian, a family court judge decides who raises your children — without knowing your values, your relationships, or your wishes.

Name both a guardian of the person (who raises the child day-to-day) and a guardian of the estate (who manages any inherited money on the child's behalf). These can be the same person or different people. Talk to your chosen guardian before finalizing the will — make sure they are willing. For more on this topic, see naming a guardian for your children.

Identifying Your Beneficiaries

A beneficiary is anyone who inherits something under your will. Be specific:

  • Use full legal names, not just "my kids" or "my sister." Courts interpret ambiguous language strictly.
  • Include a relationship description ("my daughter, Jane Marie Smith") to reduce confusion.
  • Name contingent (backup) beneficiaries for each gift in case a primary beneficiary predeceases you.
  • Specify what each person receives — a percentage of the estate, a specific dollar amount, or a named item.
  • Decide how to handle the share of a beneficiary who dies before you. Options include per stirpes (their share passes to their children) or per capita (divided equally among surviving beneficiaries). Our guide on per stirpes vs. per capita explains both.

Listing Specific Bequests

A specific bequest is a named gift: "I leave my 1962 Gibson guitar to my nephew, Robert Allen Smith." This section is where you handle items with sentimental or monetary value that you want to go to a particular person.

A few tips:

  • Be precise about descriptions — make and model, location, last four digits of an account number.
  • Consider whether the item might not exist at the time of your death (sold, lost, destroyed). Language like "if I still own it at the time of my death" avoids confusion.
  • Some attorneys recommend keeping a separate, signed personal property memorandum for household items rather than cluttering the will itself. Many states allow this as a legally referenced document.

The Residuary Clause

This is your catch-all. After all specific bequests are made and all debts are paid, the residuary clause directs who gets everything that's left. It also captures anything you forgot to name specifically or assets you acquire after the will is written.

Do not skip this clause. Without it, unnamed assets fall into intestacy — distributed according to your state's default rules, which may not match your wishes at all.

What a Will Cannot Do

Knowing the limits of a will is just as important as knowing what to put in it. A will cannot:

What You Might Want Why a Will Can't Do It Better Tool
Leave a retirement account (IRA, 401k) These pass by beneficiary designation, not probate Update your beneficiary form directly with the plan administrator
Leave life insurance proceeds Same — beneficiary designation controls Review your policy's beneficiary form
Make healthcare decisions while you're alive A will only operates at death Advance directive or healthcare proxy
Avoid probate entirely Assets in the will go through probate Revocable living trust
Leave conditional gifts ("only if she graduates college") Conditions are difficult to enforce in a simple will Testamentary trust

Optional But Often Valuable Additions

Funeral and Burial Wishes

You can include preferences for burial, cremation, or a specific funeral home. One important caveat: wills are often not read until days after death — after burial decisions have already been made. Consider also leaving a last wishes letter or a letter of instruction in a place your family can find immediately.

Debt and Tax Directions

Your will can specify which assets should be used to pay debts and taxes — preventing the executor from having to liquidate something you intended as a keepsake. This matters most when your estate includes illiquid assets like real estate or a small business.

Disinheritance

If you want to intentionally exclude someone who might otherwise have a legal claim — especially a spouse in some states or a child — your will should state this clearly and explicitly. Silence can be challenged. Learn more about disinheritance rules.

After You Write It: Storage and Updates

A will that no one can find is nearly useless. Store the signed original in a fireproof safe, a safe deposit box, or with your attorney. Tell your executor where it is. Some states allow wills to be filed with the probate court for safekeeping while you're still alive.

Review your will every three to five years or after any major life change — marriage, divorce, the birth of a child, a significant inheritance, or the death of a named beneficiary or executor. Our guide on when to update your will walks through the triggers in detail.

This article is general information, not legal advice. Estate laws vary significantly by state. For a will that fully protects your family, consult a licensed estate planning attorney in your state.

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Frequently Asked Questions

What happens if I forget to include an asset in my will?
Any asset you own at death that isn't named in your will — and has no other transfer mechanism like a beneficiary designation or joint ownership — will typically be distributed according to your state's intestate succession laws, not your personal wishes. Some wills include a "residuary clause" (also called a catch-all clause) that sweeps up everything not specifically named and directs it to a chosen person or persons. Including a residuary clause is one of the most important things you can do to prevent unintended outcomes. See our guide on what happens if you die without a will for more context.
Does a will cover all of my assets?
No — and this surprises many people. Assets that pass outside of probate are not controlled by your will at all. These include life insurance policies with named beneficiaries, retirement accounts (401(k)s, IRAs), payable-on-death bank accounts, transfer-on-death investment accounts, and property held in joint tenancy with right of survivorship. Those assets go directly to the named beneficiary regardless of what your will says. That's why keeping your beneficiary designations up to date is just as important as the will itself.
Do I need a lawyer to make sure my will includes everything it needs?
You're not legally required to use an attorney, but the complexity of your estate matters. For straightforward situations — a single home, no blended-family complications, minor children without special needs — a reputable online will service reviewed by a licensed attorney can be sufficient. If you own a business, have a child with a disability, hold property in multiple states, or anticipate family conflict, an estate planning attorney is worth the cost. Either way, understanding what a will must contain — covered in this guide — helps you ask the right questions and catch gaps before they become problems.

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