Definition of a Legal Will

By Teo Spengler

A will -- also called a last will and testament -- is a document describing what you want to happen to your estate when you die. In a will, you name your heirs, a guardian for your minor children and also an executor for your will -- the person to collect and distribute your assets. However, a will is only enforceable if it complies with the probate laws of your state.

Competent Testator

You must be competent and of legal age to make a valid will. If you are underage -- under 18 in most states -- the court distributes your property according to your state's intestate laws regardless of whether you write a will. The courts consider you competent -- also termed "of sound mind" or "having testamentary capacity" -- if you understand that you are making a will that will distribute your property at your death. Neither eccentricities nor drug or alcohol use render you incompetent as long as you have testamentary capacity at the time you sign the will.

Proper Execution

Execution of a will means the will-signing procedure required by your state. In most states, probate laws regulate the execution of your will much more than the substance. You can likely leave your entire estate to your pet turtle without running afoul of the law, but if you neglect the witnessing requirements, your will is invalid. All states require that you sign your will before at least two of-age witnesses, and many require impartial witnesses -- people not named as heirs under your will. States impose different execution requirements for other types of wills, such as international wills or holographic wills.

Protect your loved ones. Start My Estate Plan

Testamentary Intent

In order for your will to be valid, it must express your intentions for the distribution of your property, not somebody else's intentions. When heirs challenge a will claiming undue influence, fraud or mistake, they are essentially claiming that the will does not represent your free choices. Undue influence means that someone in a confidential position improperly pressured you into making or omitting devises. Fraud means that someone tricked you, and mistake means that you were ignorant of critical facts when you wrote the will, not knowing, for example, of the existence of a new grandchild.


You can freely change or revoke a last will and testament during your lifetime, and the courts will not enforce a revoked will. A new provision (termed "codicil") added to a will alters or eliminates a bequest, and a new will supersedes the old. It is also effective revocation to state that you revoke the will, then to take some step toward destroying the will, like tearing it up or burning it.

Protect your loved ones. Start My Estate Plan
Does a Living Will Expire?


Related articles

What Constitutes a Legal Will?

A will is a testator's final directive about her property. A valid will effectively disposes of all of the testator's assets after her death according to her own choices. In order for a will to be valid, the testator must be competent, must intend to make a will and must execute the document according to state law. Absent a valid will, property passes to blood relatives under state intestate distribution laws.

Illinois Laws on Wills

A valid will can nominate someone to manage your estate and detail how your property should be distributed when you die. In Illinois, wills must comply with the Illinois Compiled Statutes, which address requirements such as the age and mental condition of the person making the will. If your will doesn't meet these requirements, it may be declared invalid, and your estate will be distributed according to state law.

Standard Will Vs. Living Will

Planning your estate may involve creating several documents to address your end-of-life care before you die and your property after you die. Two of these documents may be a will and living will. A will directs the distribution of your assets after you die and a living will directs your health care while you are alive.

LegalZoom. Legal help is here. Start Here. Wills. Trusts. Attorney help.

Related articles

Last Will & Testament of the Terminally Ill

Because a last will and testament disposes of property when someone dies, courts are careful to make sure that a will ...

Rules About Wills

Your will explains to those you leave behind how you want them to deal with your property when you die. It also allows ...

Can a Person Write Their Own Will & Then Have It Notarized?

In this age of technology, writing out a will by hand may not be the norm, but it is a perfectly acceptable alternative ...

How to Contest a Will in Missouri

Your will leaves instructions for your loved ones regarding how you want your property distributed, and your loved ones ...

Browse by category
Ready to Begin? GET STARTED