What are the Inheritance Rights of Half-Siblings When Someone Dies Without a Will?

When someone dies without a Will in Texas, siblings inherit only if a spouse, descendants, or parents do not survive the deceased person. When there is a surviving spouse, descendants, or parents, their inheritance rights take priority.

Do Half-Siblings Have Equal Inheritance Rights as Full Siblings?

Many states treat half-siblings equally to full siblings. For example, in states like California, Florida, Georgia, Minnesota, and North Carolina, half-siblings have the same intestacy rights as full siblings.

But in Texas, half-siblings and full siblings do not have equal inheritance rights. Since half-siblings only share one parent with the rest of their siblings, half-siblings inherit only half as much as full sibling inherits.

What Happens if All Siblings are Half-Siblings?

If all siblings are half-siblings, then all siblings would share equal inheritance rights.

So in a situation where one parent remarried and your only siblings are half-siblings, each of your half-siblings will inherit equal shares of your estate.

Do Step-Siblings have Inheritance Rights Under the Texas Intestacy Statutes?

Step‑siblings—those related only through marriage—have no inheritance rights under Texas intestacy laws. Without a will, they do not inherit.

How to Ensure a Step-Sibling or Half-Sibling Gets Equal Inheritance Rights in Texas?

Many people have close relations with their step-siblings and half-siblings. In some cases, the relationship is stronger than with a full sibling. If that is your situation and you want to ensure that your half-sibling receives equal inheritance rights, you need a Will or Trust.

Without a will or trust, the people you care about may receive less or nothing simply because of the way state laws divide family relationships. If you intend to treat all siblings equally, or to provide for a step-sibling or non-biological relative, your wishes may not be honored unless you formalize them in a legal document.

Key Takeaways for Half-Siblings and Intestate Inheritance

• Half-siblings are legal heirs but receive half the share of a full sibling under Texas law.
• Step-siblings are not legal heirs unless adopted or named in an estate plan.
• A properly executed will or trust ensures that your intentions—not default laws—determine who inherits your estate.

Protecting Your Family’s Future

State intestacy laws offer a default plan, but it may not reflect your personal wishes or family dynamics. Taking the time to create a will or trust allows you to include everyone you care about, including half-siblings, step-siblings, or others who might otherwise be excluded.

A Texas estate planning attorney can help you create an estate plan that aligns with your wishes. To get started, schedule an introductory conference.

This article was initially published on October 21, 2015 and updated on June 9, 2025.