When someone dies without a will, their siblings inherit only if three groups are gone first: no surviving spouse, no children or grandchildren, and no living parents. If any one of those people is alive, they inherit ahead of you. If none of them are, the estate passes to the brothers and sisters in equal shares, and one of you will have to go to court and ask to be put in charge of it.

That second part is the one nobody expects. Losing a brother or sister is already a different kind of loss, the kind that gets less room made for it at work and in the family. Then a bank tells you they cannot speak with you, and you learn that being the closest living relative and being the person legally allowed to act are two separate things.

Siblings are fourth in line, not first

Every state has an intestate succession statute, the backup will the state writes for anyone who did not write one. The details vary, but the spine is the same almost everywhere:

1. Surviving spouse. In many states the spouse takes everything when there are no children. Where there are children from another relationship, the spouse splits with them.
2. Children and their descendants. If a child died before your sibling, that child's own children usually step into their share.
3. Parents. If your sibling had no spouse and no children, their mother and father inherit, split between them or all to one if the other has died.
4. Siblings. Only when there is no spouse, no descendants, and no surviving parent do brothers and sisters inherit, and then they split the estate equally.

This is why sibling inheritance surprises people. It happens in one specific situation: an unmarried person with no kids whose parents have both died. That is a common enough life, and almost nobody living it realizes their estate is headed to their siblings by default. Our guide on what happens when someone dies without a will covers the order for other family shapes.

One caution: this order controls only assets that pass through the estate. Life insurance, a 401(k), an IRA, or a payable-on-death account goes to whoever is named on the beneficiary form, and that beats intestate law every time. Families often discover a sizable account is headed to an ex-partner who was never removed from the form.

If a sibling already died, their children usually take their place

Say there were four of you and one brother died in 2019, leaving two kids. Most states do not simply divide the estate three ways. They apply what is called right of representation, or per stirpes: your late brother's one-quarter share drops down to his two children, who split it and take an eighth each.

Nieces and nephews inheriting is normal, then, and it is better to know before the conversation happens, because it lands as a shock on siblings who assumed they were splitting things three ways. It also makes those nieces and nephews heirs of the estate, so the court will want them identified and notified. A few states pool the shares at the generation where the family branches, so the exact fractions can shift, but the principle holds either way: a dead sibling's line is not skipped.

Half-siblings: an equal share in most states, half in a few

Most states have abolished the old distinction between the half blood and the whole blood. Under the Uniform Probate Code, which about half the states follow in some form, relatives of the half blood inherit the same share they would have inherited as full siblings. In most of the country your half-brother is simply your brother for this purpose.

A minority of states kept the old rule and cut the share. Florida gives half-blood collateral relatives half as much as whole-blood relatives, and Texas does the same under its Estates Code: when the heirs are a mix of whole and half blood, each half-blood relative takes half of what each whole-blood relative takes.

Both of those states include the same carve-out. If all of the surviving siblings are half-siblings, they each take a full share. The reduction applies only when whole-blood and half-blood siblings inherit side by side. Since the dollars here can be real, confirm your own state's rule before anyone signs a distribution agreement. Adopted siblings, separately, are treated as full siblings nearly everywhere.

Someone has to be appointed, and all of you have equal priority

There is no executor when there is no will. One person petitions the probate court to be appointed administrator, or personal representative, and receives letters of administration. That document is what banks, employers, and the DMV ask for. Without it you have no authority, no matter how close you were.

The court appoints in a priority order, and under the Uniform Probate Code the heirs sit together in the same class. When your sibling had no spouse or children, that class is all of you, with identical standing. The court does not pick the oldest or the one who lived nearest.

It resolves one of two ways:

• The quiet way. The siblings agree on one person and the others sign renunciations waiving their right to serve. The petition goes in unopposed and is usually granted at the first hearing.
• The slow way. Two siblings both file, and the court holds a hearing to choose. This adds months and legal fees to an estate that has not yet paid a single bill.

Most states also require the administrator to post a bond, an insurance policy protecting the heirs, unless all the heirs sign a waiver. And if nobody wants the job, a creditor can eventually petition or the court can appoint a public administrator.

If the estate is small, you may not need any of this. Many states let heirs collect modest estates with a sworn form instead of a full case, and some banks will release funds on an affidavit of kinship. Our guide to the small estate affidavit covers the dollar limits state by state.

Why sibling estates stall: you do not know their finances

Here is the difference between settling a sibling's estate and a parent's. Adult children have usually been drifting toward their parents' paperwork for years. A sibling rarely has that. You lived in a separate house with separate mail and separate logins. You may not know who they banked with, whether they had life insurance through work, or whether an old 401(k) is sitting at an employer from three jobs ago. A paperless account with no statements in the house stays invisible until something surfaces it.

So the first real task is not legal, it is investigative. You are building a list of what your sibling owned and owed:

• Bank and credit union accounts, including online-only institutions with no branch
• Retirement accounts from every employer, not just the most recent one
• Life insurance, especially group coverage through a job, which the family often never hears about
• Brokerage accounts, crypto, and anything held on a phone
• Real estate, vehicles, and the loans against them
• Credit cards, medical bills, and any lawsuits or judgments
• Unclaimed property already sitting with the state in their name

Mail is your best early lead, so put in a change of address to yourself and read everything for a few months. Tax records help too, since an IRS wage and income transcript lists the institutions that reported interest, dividends, or retirement income under their Social Security number. Our guide on how to find a deceased person's assets goes through each source in order.

One thing is easy to miss here. If your sibling rented, the lease keeps running and the landlord will want the unit emptied, so call early and get the deadline in writing. If they lived alone, the pets and the mail need someone within days.

You do not inherit your sibling's debts

Say this to the relative losing sleep over it: debt belongs to the estate, not to you. Credit cards, medical bills, and personal loans get paid from your sibling's assets, and when those run out most of the rest goes unpaid. The exceptions are narrow, mainly that you co-signed or were a joint account holder instead of an authorized user. Collectors sometimes blur this when they call. Our guide on whether debts can be inherited covers the edge cases.

Order of payment does matter, though. States rank estate debts, with funeral costs, administration expenses, and taxes typically ahead of general creditors. An administrator who pays the easy bills first and runs out before taxes can be held personally responsible for the shortfall. That is one of the few ways an heir does end up owing money, and it is avoidable.

What to do in the first month

1. Order death certificates. Get ten to twelve certified copies, since nearly every institution wants its own. See how to order death certificates.
2. Look for a will anyway. Check the home, a safe deposit box, their attorney, and their employer's HR file before assuming there is none.
3. Confirm who the heirs are. Every sibling, half-sibling, and the children of any sibling who died first. This is the list the court will ask for.
4. Agree on who serves, before anyone files. A renunciation signed in week two saves four months.
5. Secure the property and the credit. Lock the home, forward the mail, place the pets, tell the landlord, and report the death to the three credit bureaus. Sunset files the bureau notices for free.
6. Start the asset search. Do not wait for appointment to begin building the list.
7. Open an estate account once appointed. Every dollar in and out runs through it, never your personal account.

How Sunset helps

Sunset settles estates end to end for families in all 50 states, free to use. We search banks, brokerages, retirement plans, and insurers to find what your sibling had, including the accounts nobody in the family knew about. We prepare the probate paperwork for your county, including the petition for administration and the renunciations your siblings sign. We open an FDIC-insured estate account so the money sits somewhere that is not your checking account. And we handle the closures and transfers, following each institution through until the account is closed and the funds have moved.

More than 10,000 families have used Sunset. If you want one family's account before any more law, Paige's story is about settling her sister's estate with no will.

Frequently asked questions

Do siblings inherit if there is a surviving spouse?

Generally no. A spouse inherits ahead of siblings in every state, and with no children and no living parents the spouse typically takes the entire estate.

Do half-siblings inherit the same as full siblings?

In most states, yes. The Uniform Probate Code gives half-blood relatives the same share as whole-blood relatives. Florida and Texas are exceptions where half-siblings take half a share alongside full siblings, though if every surviving sibling is a half-sibling they all take full shares.

Who becomes administrator when siblings disagree?

All siblings have equal priority, so the court decides. It weighs who is willing and able to serve, who lives near the assets, and whether anyone is disqualified. The faster path is agreeing on one person and signing renunciations before filing.

What happens if a sibling died before my brother or sister?

Their children usually inherit that share by right of representation. If three siblings survive and a fourth died leaving two kids, those two split the quarter that would have gone to their parent.

Am I responsible for my sibling's debts?

No, unless you co-signed or were a joint account holder. Debts are paid from the estate's assets, and unpaid balances usually die with the estate.

Where to start

Two things move without the court: agreeing on who serves, and starting the asset search. Everything else waits, so do those first.

Sunset can take the search, the paperwork, and the account closures off your hands, in any state, at no cost to your family. Get started with Sunset and tell us what you know so far. It does not have to be much.

This article is general information, not legal advice. Intestate succession and administrator priority vary by state.