Can Paternity Affect Inheritance Rights?

Whether a child can inherit from a parent often comes down to one legal question that has nothing to do with love or biology alone: is there a recognized parent-child relationship? In Washington, establishing parentage can be the difference between a child inheriting and being left out entirely.

For related help, see Washington family-law guidance, a related guide, and another helpful resource.

The Parent-Child Relationship Drives Inheritance

When people ask whether paternity affects inheritance, the honest answer is that it can be decisive. Washington law ties a child's ability to inherit to the legal parent-child relationship, not to whether the parents were ever married and not to biology standing alone. This is a protection for children, and it is spelled out in state law.

Under RCW 11.04.081, for the purpose of inheritance to, through, and from any child, the effects and treatment of the parent-child relationship do not depend on whether the parents were married. In plain terms, a child born to unmarried parents has the same inheritance rights as a child born to married parents, provided the legal parent-child relationship exists. Marriage is not the trigger. The recognized parent-child relationship is.

That last point is the one to hold onto. The statute removes marriage as a barrier, but it does not remove the need for a legally recognized relationship. If a father's parentage has never been established, the legal link that RCW 11.04.081 depends on may simply not be there, and the child's claim can become far more complicated.

What Happens When There Is No Will

Inheritance questions come up most sharply when someone dies without a will, which the law calls dying intestate. In that situation, Washington decides who inherits and in what shares under RCW 11.04.015, the statute that governs descent and distribution of an intestate estate.

Under that statute, after a surviving spouse or state registered domestic partner receives their share, the remaining estate passes first to the decedent's issue, meaning their children and descendants. Children are near the front of the line. But the statute distributes to the decedent's issue, and whether a particular child qualifies as issue depends on whether that child stands in a recognized parent-child relationship with the person who died. This is exactly where paternity becomes so important. A child who is legally recognized as the decedent's child is positioned to inherit; a child whose parentage was never established may have to prove that relationship before any share can pass.

Read together, these two statutes tell a clear story. RCW 11.04.015 says children inherit when a parent dies without a will, and RCW 11.04.081 says the parent-child relationship that makes that possible does not depend on the parents' marriage. The missing ingredient in many real cases is proof that the relationship legally exists.

Establishing Parentage Protects a Child's Inheritance

Because inheritance rests on a recognized parent-child relationship, establishing parentage is one of the most effective ways to protect a child's future claim. Washington's process for creating that legal relationship is set out in chapter 26.26A RCW. A parent-child relationship can be established by a valid acknowledgment of parentage, by a presumption of parentage, or by a court adjudicating parentage in a legal proceeding.

Establishing parentage while everyone is living is far simpler than trying to prove it after a death. Once parentage is legally established, the child's status as the decedent's issue is clear, and the inheritance rules in RCW 11.04.015 apply without the added burden of first litigating whether the relationship existed at all. For an unmarried father in Snohomish County who wants to make sure his child is provided for, taking the step to establish parentage is both a family decision and an estate planning one.

Practical Questions Families Ask

A common question is whether a child born outside marriage can inherit from a father who never married the mother. The answer under RCW 11.04.081 is yes, so long as the parent-child relationship is legally recognized. The marriage question is off the table; the recognition question is the one that matters.

People also ask whether a will changes the analysis. It can. A parent who wants certainty about who receives their property should consider a well-drafted will rather than relying solely on the intestate statute. A will lets a parent name beneficiaries directly and reduce the risk of a dispute about who counts as an heir. At the same time, establishing parentage remains valuable, because it clarifies the legal relationship for many purposes beyond a single document, including support, benefits, and any claims that arise if the will is challenged.

Finally, families ask what happens if paternity is contested after a death. That situation is far more difficult and often more expensive, because the relationship must be proven at a time when the person at the center of the question is gone. It is another reason to address parentage early rather than leaving it for a court to sort out later.

Plan Ahead With the Law Office of Chad Foster

Paternity and inheritance sit at the intersection of family law and estate planning, and getting both right requires attention to how the statutes work together. If you want to make sure your child is protected, or you have questions about how an estate will pass, the Law Office of Chad Foster serves families throughout Snohomish County and can help you put the right pieces in place. Contact the office to schedule a consultation.