Intestate Succession: Who Inherits When There Is No Will

More Than Half of American Adults Have No Will

A 2024 Caring.com survey found that 56% of Americans have no will or estate plan in place. When a person dies without a valid will — a condition the law calls "intestate" — state intestacy statutes dictate who inherits the estate. Those statutes prioritize blood relatives in a fixed hierarchy that rarely matches what the decedent would have actually wanted. An unmarried partner of 20 years receives nothing under most intestacy laws. A first cousin the decedent despised may inherit if no closer relatives exist. Understanding intestate succession reveals exactly how much is left to chance without a will.

The Basic Priority Hierarchy

Intestacy statutes in all U.S. states follow a general priority structure, though specific shares and rules vary. The most closely related surviving relatives inherit first, with more distant relatives inheriting only if no closer relatives survive. The Uniform Probate Code (UPC), adopted in whole or in part by about 20 states, provides a model framework.

When a surviving spouse exists, the share depends heavily on whether the decedent also left surviving children or parents, and on the state's specific statute.

The Surviving Spouse's Share: Enormous Variation by State

The surviving spouse's intestate share is where state law diverges most dramatically. Some states leave the entire estate to the surviving spouse if no children survive. Others divide the estate between the spouse and the decedent's parents. Even more complex rules apply when the decedent leaves children from a prior relationship.

• UPC approach: Surviving spouse takes entire estate if all surviving children are also children of the surviving spouse, OR if no children survive and the decedent's parents do not survive. If children from a prior relationship exist, the spouse takes the first $225,000 plus half the balance; children split the rest.
• Non-UPC states: Many give the spouse one-third to one-half, with children taking the remainder — leaving the spouse unable to maintain a family home without buying out the children's interests
• New York: Surviving spouse takes first $50,000 plus half the residue; children divide the other half

Stepchildren, Half-Bloods, and Adopted Children

Stepchildren — a spouse's children from a prior relationship who were never adopted — do not inherit under intestacy unless they were formally adopted. This is one of the most common surprises families encounter. A stepparent who raised children for decades but never formally adopted them leaves those children with no intestate claim.

Half-blood relatives (sharing one parent in common rather than two) are treated differently across states:

• Most states treat half-blood siblings identically to full-blood siblings for inheritance purposes
• A minority of states give half-blood relatives a reduced share (typically half what a full-blood relative would receive)
• Adopted children are treated as biological children of the adoptive parents for all inheritance purposes in every U.S. state — they inherit fully from adoptive parents and those parents' relatives

Community Property vs. Common-Law States

The nine community property states (Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, Wisconsin) treat marital property differently for both ownership and intestate purposes.

In a community property state, the surviving spouse already owns 50% of community property as their own separate property — the decedent can only pass the other 50% through their estate. This substantially changes the effective inheritance picture compared to common-law states.

Domestic Partners and Unmarried Couples

Traditional intestacy laws built on marriage and blood relationships provide no inheritance rights to unmarried long-term partners — regardless of the length or depth of the relationship. States that recognize registered domestic partnerships (California, Oregon, Washington, and others) generally extend intestate rights to registered partners equivalent to those of a spouse.

Unmarried couples without formal partnership registration in most states have zero intestate rights. The partner of 30 years inherits nothing if the deceased partner left no will. Every asset passes to blood relatives — potentially including estranged parents or distant cousins the decedent had not spoken to in decades. This makes estate planning, even a basic will, especially urgent for unmarried couples.

This article is for informational purposes only and does not constitute legal advice.