Wyoming Will Requirements and Intestate Succession: Who Inherits Without a Will
Two questions determine the entire direction of a Wyoming estate: Is there a valid will? And if not, what does Wyoming law say about who inherits? Getting either answer wrong sets the estate administration down the wrong path from day one. Here is what Wyoming requires for a valid will and exactly who inherits when someone dies without one.
Wyoming Will Requirements
A will in Wyoming is governed by Title 2 of the Wyoming Statutes Annotated. To be legally valid, a will must satisfy the following formal requirements:
The testator must be of legal age and sound mind. Wyoming requires that the person making the will (the testator) be at least 18 years old. The testator must be of sound mind at the time of execution — meaning they understand the nature of the document, the extent of their property, and who their natural heirs are.
The will must be in writing. Wyoming does not recognize oral wills except in extremely narrow circumstances involving military personnel in actual service during armed conflict. For everyone else, the will must be a physical written document.
The testator must sign the will. The testator's signature at the end of the will is required. If the testator is physically unable to sign, another person may sign the testator's name in their presence and at their direction.
Two witnesses must sign. At least two witnesses must observe the testator sign the will — or acknowledge to them that the signature on the document is theirs — and then sign the will as witnesses. The witnesses should be adults who will not inherit under the will. Under Wyoming law, a witness who is also a beneficiary does not automatically invalidate the will, but their bequest may be affected if it would otherwise fail without their witness signature.
No notarization required (but recommended). Wyoming does not require a will to be notarized to be valid. However, a will that includes a self-proving affidavit — a notarized statement signed by the testator and witnesses simultaneously — becomes "self-proving." A self-proving will can be admitted to probate without requiring the witnesses to appear in court and testify about the signing. For most families, this is worth the minor additional effort.
Handwritten (Holographic) Wills in Wyoming
Wyoming recognizes handwritten wills, called holographic wills, under W.S. 2-6-113. To be valid as a holographic will, the material provisions and the testator's signature must be entirely in the testator's own handwriting. No witnesses are required.
Holographic wills are often executed in emergency situations — a hospital admission, a sudden illness — when formal witnessing is not practical. They are legally valid in Wyoming but more frequently contested than formally witnessed wills because it is harder to prove the document's authenticity and the testator's mental state at the time of signing. If a holographic will exists and is submitted to the District Court, the court may require evidence that the handwriting belongs to the decedent.
Delivering the Will After Death
Possessing the original will after the testator dies triggers an immediate legal obligation. Under Wyoming law, any person who has custody of a will must deliver it to the Clerk of the District Court in the county where the decedent lived, or to the named personal representative, within ten days of learning of the death. Failure to deliver a will can expose the holder to civil liability.
The District Court does not automatically probate the will once it is delivered. The formal probate process — or the application for summary distribution — must be initiated separately. Delivering the will simply places it in the court's custody as required by statute.
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What Happens When There Is No Valid Will: Wyoming Intestate Succession
When someone dies without a valid will, or with a will that covers only part of their estate, Wyoming's intestate succession laws determine who inherits the property that passes through the probate estate. These rules are set out in W.S. 2-4-101 through 2-4-105 and follow a hierarchical distribution based on family relationship.
Understanding the rules requires one foundational point: Wyoming is not a community property state. Unlike Arizona, California, or Texas, Wyoming does not automatically treat property acquired during marriage as jointly owned by both spouses. Property titled in one spouse's name belongs to that spouse. If that spouse dies without a will, the surviving spouse does not automatically inherit everything — Wyoming's intestate rules determine the division.
Wyoming Intestate Distribution: Who Gets What
If the decedent is survived by a spouse and children from that marriage only: The surviving spouse inherits the entire estate.
If the decedent is survived by a spouse and children from a prior relationship (not the current spouse's children): The surviving spouse receives half the estate. The decedent's children from the prior relationship split the other half equally.
If the decedent is survived by a spouse but no children: The surviving spouse inherits the entire estate.
If the decedent is survived by children but no spouse: The children divide the estate equally. If a child predeceased the decedent, that child's share passes to their own children (the decedent's grandchildren) in equal shares — this is called representation by stirpes.
If the decedent is survived by neither spouse nor children: The estate passes to the decedent's parents in equal shares, or to the surviving parent if one has died.
If no parents survive: The estate passes to the decedent's siblings (or their descendants if a sibling has died).
If no siblings or their descendants survive: The estate is divided into two halves — one for the maternal line, one for the paternal line — and distributed to the nearest relatives on each side.
If no relatives survive at all: The estate escheats to the State of Wyoming.
Common Situations Where Intestate Rules Surprise Families
The "I thought my spouse gets everything" assumption. Many married Wyomingites assume their spouse automatically inherits everything. This is true only if there are no children from prior relationships. A rancher who was previously married, has children from that marriage, and remarries without a will may unintentionally leave those children competing with the new spouse for the estate — exactly the opposite of what most blended families expect.
Stepchildren do not inherit under Wyoming intestate succession. A stepchild who was never formally adopted by the decedent has no intestate inheritance rights, regardless of the length or closeness of the relationship. Only legally adopted children stand in the same position as biological children under Wyoming intestate law.
Half-siblings inherit equally. Under Wyoming's intestate succession rules, half-siblings (sharing only one parent with the decedent) inherit equally with full siblings.
No inheritance for unmarried partners. Wyoming law does not recognize common-law marriage established after January 1, 1995. If an unmarried couple lived together for decades without formalizing their relationship, the surviving partner has no intestate inheritance rights to the deceased partner's property, regardless of how long they shared a life. The entire estate passes to the decedent's legal relatives.
Why the Will's Contents Must Be Checked Against Non-Probate Assets
Even a comprehensive will only controls probate assets — property that the decedent owned solely in their own name without any beneficiary designation or survivorship arrangement. Significant portions of most Wyoming estates pass outside the will:
- Life insurance proceeds go directly to named beneficiaries
- IRA and 401(k) accounts go directly to named beneficiaries
- Bank accounts with payable-on-death designations go directly to the named person
- Real estate with a recorded Transfer on Death deed goes directly to the named grantee
- Property held in joint tenancy with right of survivorship goes directly to the surviving joint owner
A will that attempts to direct the distribution of life insurance or a TOD deed property has no legal effect on those transfers — the beneficiary designation or survivorship mechanism controls regardless of what the will says. This is a common source of conflict when the beneficiary named in a policy or TOD deed differs from the beneficiary named in the will.
Beginning the Estate Settlement Process
Whether a valid will exists or Wyoming's intestate succession rules govern the estate, the settlement process follows the same initial steps: secure the original will and deliver it to the District Court, obtain certified copies of the death certificate, identify all assets and their ownership structure, determine which assets require probate and which can transfer directly, and evaluate whether the estate qualifies for summary distribution under the $400,000 threshold.
The Wyoming Estate Settlement Guide covers the complete administration process from these first steps through final distribution — including the correct forms for each path, the statutory deadlines that govern when affidavits can be filed and when creditors must be notified, and the specific procedures for estates that include real property, mineral rights, or Medicaid complications.
Understanding whether a will is valid, and who inherits without one, is the essential starting point. Everything that follows depends on getting this right.
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