Most people never plan for this. They assume their family will “figure it out.” But in Missouri, if you die without a will, the state decides who gets your stuff. Not you. The state.
That might surprise you. It surprises a lot of people. Let’s break down exactly how Missouri’s intestacy laws work and what it means for your family.
What Is Intestacy?
Dying without a valid will is called dying “intestate.” It sounds like a legal term. It basically just means you left no instructions behind.
When that happens, Missouri steps in. The state uses a set of rules called intestate succession laws. These laws decide who inherits your property. They follow a strict order, starting with your closest family members.
Wondering if this applies to you? If you don’t have a signed, legal will right now, yes, it does.
What Property Do These Laws Cover?
Okay, here’s something important. Missouri’s intestacy laws don’t cover everything you own. They only apply to assets that would have passed through a will.
Some property passes outside of these rules entirely. Joint bank accounts go straight to the other account holder. Life insurance policies go to whoever you named as beneficiary. Retirement accounts work the same way. Real estate held in joint tenancy also passes automatically.
So what’s left? Things like your car, your savings account without a co-owner, your personal belongings, investments, and real estate you own alone. That’s what gets divided up under Missouri law.
How Missouri Divides Your Estate
If You’re Married With No Children
This one’s pretty simple. Your surviving spouse gets everything. All of your intestate property goes to them. No sharing, no complications.
Makes sense, right? Most people would want that anyway.
If You’re Married With Children
Here’s where it gets more interesting. What your spouse receives depends on whether your kids are also their kids.
If all your children are shared with your surviving spouse, your spouse gets the first $20,000 of your estate. Then they get half of whatever is left. Your children split the remaining half equally.
Let’s say you have $260,000 in assets. Your spouse gets $20,000 right off the top. Then half of the remaining $240,000, which is $120,000. So your spouse walks away with $140,000 total. Your kids split the other $120,000.
Now here’s where it gets serious. If some of your children are not from your surviving spouse, the math changes. Your spouse only gets half. No $20,000 head start. The other half goes to your kids.
If You Have Children But No Spouse
All intestate property goes to your children. They split it equally. Grandchildren may inherit a share if one of your children has already passed away.
If You Have No Spouse and No Children
Missouri looks next to your parents. If both are alive, they split everything equally. If only one parent survives, that parent gets everything.
No living parents? Then your brothers and sisters inherit. If a sibling has already died, their children (your nieces and nephews) may step into their place.
The law keeps going further and further out to distant relatives if needed. Great-grandparents, aunts, uncles, cousins. But there’s a limit. Relatives must be within the ninth degree of kinship. Beyond that, Missouri stops looking.
If absolutely no one qualifies, your estate goes to the state. This is called escheat. It’s rare, but it happens.
Special Rules You Should Know
The 120-Hour Rule
Hold on, this part is important. To inherit from you in Missouri, a person must survive you by at least 120 hours. That’s five days.
Why does this matter? Imagine you and a sibling are in a serious accident. You pass away, and they die three days later. Under Missouri law, your sibling didn’t survive long enough to inherit. Their estate gets nothing from yours.
Half-Relatives Inherit Half
Missouri treats half-relatives differently than full relatives. A half-sibling, meaning someone who shares only one parent with you, inherits half the share of a full sibling.
Here’s an example. Say you have two full sisters and one half-brother. The sisters each get two-fifths of the estate. The half-brother gets one-fifth.
Adopted Children Are Fully Equal
Good news for adoptive families. If you legally adopted a child, they have the same inheritance rights as your biological children. No difference at all.
But stepchildren and foster children don’t get the same treatment. If you never legally adopted them, they don’t automatically inherit. This surprises a lot of blended families.
Children Born Outside of Marriage
Children born outside of marriage can still inherit from their biological parents in Missouri. There are some rules around proving the relationship, but the law does recognize these children.
Unmarried Partners Get Nothing
This one’s tough. If you’re not legally married, your partner has no inheritance rights under Missouri intestacy law. It doesn’t matter how long you’ve been together. Ten years, twenty years, it makes no difference legally.
Honestly, this is the part most people miss. And it can cause real hardship.
The Probate Process
When someone dies intestate in Missouri, their family has to go through probate court. That’s the legal process for settling an estate. It can take six months or more. Sometimes much longer.
During probate, a personal representative gets appointed to manage the estate. Creditors get notified and paid first. Then whatever is left gets distributed to heirs.
It costs money too. Attorneys and personal representatives are paid from the estate, based on a percentage set by Missouri law. These fees come out before your heirs see a dime.
Think of it like a traffic ticket but for your whole estate. It’s not just annoying. It’s expensive.
What About the Federal Estate Tax?
Most people don’t have to worry about this. In 2026, the federal estate tax only kicks in for estates worth more than $15 million. If your estate is under that threshold, no federal estate tax is owed.
Missouri also does not have its own state estate tax. So for most families, taxes aren’t the big concern here. The bigger issue is making sure the right people actually receive what you intended.
How to Avoid Intestacy Problems
You’re not alone if this feels overwhelming. Most people put off estate planning because it feels complicated or morbid. But it doesn’t have to be either.
The single most powerful thing you can do is write a will. A basic will lets you name who gets what. It lets you choose a guardian for minor children. It can save your family months of stress and thousands of dollars.
You should also review your beneficiary designations. Update them on your life insurance, retirement accounts, and bank accounts. These pass outside of your will entirely. An outdated beneficiary can cause real problems.
If you’re in an unmarried partnership, a will is especially critical. It’s the only way to protect your partner’s inheritance rights.
A trust is another option. It can help your estate skip probate altogether. An estate planning attorney can help you figure out the best approach for your situation.
Frequently Asked Questions
What happens if I die without a will in Missouri? Missouri’s intestate succession laws take over. The state divides your estate among your closest relatives according to a set legal order.
Does my spouse automatically inherit everything if I die without a will? Not always. If you have children, your spouse shares the estate with them. The split depends on whether your children are also your spouse’s children.
Can my unmarried partner inherit from me under Missouri law? No. Unmarried partners have no inheritance rights under Missouri’s intestacy laws. You must create a will to protect them.
Do adopted children have the same rights as biological children? Yes. Missouri law treats legally adopted children exactly the same as biological children for inheritance purposes.
What if no relatives can be found? If Missouri cannot locate any eligible relatives within the legal limits, your estate escheats, meaning it passes to the state.
How long does probate take in Missouri? Probate typically takes at least six months. Complex or contested estates can take much longer and cost more.
Can I avoid probate in Missouri? Yes. Using tools like trusts, transfer-on-death designations, and joint ownership can help your assets pass directly to loved ones without going through probate.
Final Thoughts
Now you know how Missouri handles estates when there’s no will. The law tries to do something sensible, but it can’t read minds. It can’t know you wanted your partner to get the house or your favorite niece to have your car.
Only you can make those decisions. And the only way to make them stick is to put them in writing.
Don’t wait on this one. Seriously. The cost of a basic will is small compared to the mess it prevents. When in doubt, talk to an estate planning attorney in Missouri. Your family will thank you.
