Intestacy Rules: How Estates Are Divided When There's No Valid Will

What Intestacy Rules Are

Intestacy rules are the statutory formulas that determine who inherits when someone dies without a valid will — or when a will is successfully contested and invalidated. Every state, province, and country has its own version, but the underlying logic is similar: distribute the estate to the closest surviving relatives in a fixed priority order determined by the legislature, not by the deceased's wishes.

These rules matter for will contests because they define the fallback. If you challenge a will and succeed, the estate doesn't disappear — it gets redistributed according to intestacy. Understanding whether intestacy would benefit you is a critical part of deciding whether a contest is worth pursuing.

The General Hierarchy

While specifics differ, the priority order is strikingly consistent across common-law countries:

Surviving Spouse

The spouse nearly always inherits first, but the share depends on who else survives:

• Spouse only (no children, no parents): The spouse typically inherits the entire estate
• Spouse plus children of that same marriage: In many U.S. states, the spouse takes everything; in others, the spouse takes a fixed sum plus a percentage, with the rest split among children
• Spouse plus children from a prior relationship: The spouse's share shrinks — often to one-third or one-half — with the remainder divided among the deceased's children

In England and Wales, the surviving spouse currently receives the first £322,000, all personal possessions, and half the remainder, with the other half going to the deceased's children. This threshold is updated periodically by statutory instrument.

Children

Children inherit equally from each other when there's no surviving spouse, or they split whatever portion the spouse doesn't take. Adopted children have the same rights as biological children in every major jurisdiction. Stepchildren who were never legally adopted have no intestacy rights — a harsh result that catches many blended families off guard.

If a child predeceased the decedent, most jurisdictions apply a per stirpes rule: that child's share passes to their own children (the deceased's grandchildren).

Parents, Siblings, and Extended Family

When there's no surviving spouse or children, the estate moves to:

1. Parents (equal shares if both living)
2. Siblings (including half-siblings in most jurisdictions)
3. Grandparents
4. Aunts and uncles
5. First cousins

The chain extends outward until a living relative is found. If no relatives can be located, the estate escheats to the government.

Where the Rules Diverge

United States

Intestacy law is state-specific. Key variations include:

• Community property states (California, Texas, Arizona, and others): The surviving spouse automatically receives the deceased spouse's half of community property. Separate property follows the intestacy hierarchy.
• Common-law states: The spouse's share depends on which other relatives survive. New York gives the spouse $50,000 plus half the estate when children exist; other states give different fractions.
• Unmarried partners: No U.S. state provides intestacy rights to unmarried cohabitants, regardless of the relationship's duration.

United Kingdom

England and Wales use a fixed statutory framework. The £322,000 spousal threshold is relatively generous by international standards but still produces unexpected results when the estate is primarily a family home worth more than that amount.

Scotland has a separate system that gives the spouse and children "legal rights" (fixed shares of moveable property) that cannot be overridden even by a valid will.

Australia

Each state has its own succession act. Common features include a threshold amount for the surviving spouse and a distribution scheme for children and other relatives. Notably, most Australian states have relatively accessible family provision claim mechanisms that allow dependants to challenge an unfair intestacy distribution — an unusual situation where you'd contest the application of intestacy rules rather than a will.

Common Pitfalls

Blended families suffer the most. Intestacy rules were designed for traditional nuclear families. When a person has children from multiple relationships, a surviving second spouse, and stepchildren, the statutory formula can produce results no one in the family expected or intended.

Unmarried partners receive nothing. A couple who lived together for 20 years, shared finances, and raised children together — if they never married or entered a civil partnership, the surviving partner has no intestacy claim in most jurisdictions. The deceased's estate goes to their blood relatives.

Estranged relatives inherit. A parent who abandoned the family decades ago, a sibling who hasn't spoken to the deceased in years — if they're next in the statutory hierarchy, they inherit. Intestacy doesn't consider the quality of the relationship.

The family home can be forced into sale. When the estate must be split among multiple heirs and the primary asset is a house, the practical result may be a forced sale — displacing a surviving spouse or adult child who was living there.

Intestacy and Will Contests

Understanding intestacy rules is essential for anyone considering a will contest:

• Would intestacy benefit you? If the will leaves you nothing but you're an heir at law, invalidating the will means intestacy gives you a share. This is the basic standing calculation.
• Would intestacy benefit you more than the will? Sometimes the will gives you something, but intestacy would give you more. In these cases, a contest makes financial sense only if the additional share exceeds your legal costs.
• Would a prior will benefit you more than intestacy? If a prior version of the will gave you a larger share, your ideal outcome may be invalidating the current will while preserving the prior one — a more complex legal argument.

The Contesting a Will toolkit includes a standing self-assessment and cost-benefit calculator that help you work through this analysis before committing to a legal challenge.