Written by: Attorney Anne Harris
Probate is a court-supervised process for validating a will, paying a deceased person's debts, and distributing what's left to the right people. It isn't a single event or a form you file once. It's a sequence of specific legal steps, each with its own requirements and deadlines, and a personal representative is legally responsible for completing every one of them correctly. Here's what the process actually involves, start to finish.
Key takeaways
Probate begins when a petition is filed with the court and the judge appoints a personal representative, issuing Letters Testamentary or Letters of Administration.
A formal inventory of the deceased's assets must be filed with the court, and creditors get a mandatory six-month window to file claims.
The personal representative is personally responsible for correctly identifying assets, paying valid debts in the right order, and distributing what remains according to the will or Missouri law.
Missouri allows two paths: independent administration, which moves faster with less court oversight, or supervised administration, which requires court approval at more steps.
A personal representative who makes a mistake, missing a deadline, paying debts out of the wrong order, distributing assets too early, can be held personally liable, which is exactly why this role carries more legal weight than people expect.
Step one: opening the estate
The process begins with a petition filed in the probate division of the circuit court in the county where the deceased person lived. If there's a will, it's filed along with the petition. The court then formally appoints a personal representative (sometimes still called an executor) and issues either Letters Testamentary, if there's a valid will naming that person, or Letters of Administration, if there's no will or the named executor can't serve. These letters are the personal representative's legal authority to act on behalf of the estate; nothing else in this process can happen without them.
Step two: notifying creditors
The personal representative is required to publish notice to creditors in a local newspaper, which starts a mandatory six-month window during which creditors can file claims against the estate. This deadline can't be shortened, and it's one of the main reasons even a simple, uncontested probate case takes a minimum of several months. Most claims must be filed within six months after first publication or two months after mailed or served notice, whichever is later, subject to the one-year deadline after death and statutory exceptions. Known or reasonably ascertainable creditors generally must also receive actual notice.
Step three: the inventory
Within a set period after appointment, the personal representative must file a formal inventory of the estate's assets with the court: real estate, bank accounts, investments, personal property, everything that's part of the probate estate. This isn't a casual list. It's a sworn legal document, and errors or omissions here create real problems later, sometimes requiring the estate to be reopened.
Step four: paying debts and expenses, in the right order
Valid claims, taxes, and administration expenses must be paid or properly provided for before final distribution, in accordance with Missouri’s payment priorities. Properly authorized partial distributions may occur before administration is complete. Paying the wrong creditor first, or distributing assets to a beneficiary before debts are settled, can create personal liability for the personal representative, who may have to cover the shortfall out of their own pocket.
Step five: choosing between independent and supervised administration
Missouri allows two paths for estates over $40,000. Independent administration lets the personal representative handle most decisions, selling property, paying bills, without separate court approval for each step, available when the will specifically authorizes it or all heirs consent. Supervised administration requires court approval at more points along the way and is used when independent administration isn't available or appropriate, generally moving more slowly as a result. Qualifying estates valued at $40,000 or less after statutory deductions may instead use the small-estate affidavit procedure.
Step six: closing the estate
Once the creditor period has passed and all debts and expenses are settled, the personal representative prepares a final accounting showing exactly what came in, what went out, and what remains. In supervised administration, the court generally approves final distribution. Independent administration may instead use Missouri’s statement-of-account procedure, allowing distribution without a separate approval order after required notices and objection periods. Distribution must follow the will and applicable Missouri law.
Why personal representatives routinely underestimate this role
A lot of people agree to serve as a personal representative assuming it's mostly paperwork and patience. The actual role carries real legal responsibility: a personal representative owes a fiduciary duty to the estate and its beneficiaries, meaning they can be personally liable for mistakes, missing the six-month creditor window properly, misidentifying what's part of the probate estate, distributing funds before debts are resolved, paying a lower-priority creditor before a higher-priority one. These aren't hypothetical risks. They're the specific, recurring mistakes that turn a straightforward estate into a legal problem for the person trying to help settle it.
Where self-representation creates the most risk
Formal probate administration generally requires an attorney when the personal representative is not a lawyer. Certain simplified proceedings, including some small-estate and refusal-of-letters matters, may be handled without counsel, depending on the proceeding and local court rules. The steps above look straightforward written out, but each one has specific legal requirements, proper notice language, correct creditor priority, accurate inventory classification, that aren't obvious to someone doing this for the first and only time in their life. An attorney doesn't just file paperwork faster. They catch the mistakes that create personal liability before those mistakes happen, which is exactly the kind of protection a personal representative doesn't know they need until it's too late to undo.
Frequently asked questions
What's the first step in Missouri probate? Filing a petition with the probate court, along with the will if one exists, which leads to the court appointing a personal representative and issuing Letters Testamentary or Letters of Administration.
How long does the creditor notice period last? Usually six months after first publication in a full estate administration. Actual-notice deadlines, the one-year deadline after death, and statutory exceptions may change the result. Small-estate procedures follow different rules
Can a personal representative be held personally liable for mistakes? Yes. A personal representative who pays debts out of the wrong priority order, misses deadlines, or distributes assets improperly can be held personally responsible for the resulting loss to the estate.
Do I need a lawyer to serve as a personal representative in Missouri? It's not always required, but generally, yes for formal estate administration, unless you are an attorney qualified to handle the matter. Certain simplified proceedings may allow self-representation, depending on the procedure and local court rules.The role carries real legal responsibility and specific procedural requirements that are easy to get wrong without experience, which is exactly why most personal representatives choose to work with an attorney.
If you're serving as a personal representative, or about to become one, and want to understand exactly what's required of you before a mistake becomes a real problem, call Polaris Estate Planning & Elder Law for a conversation.
Ready to secure your family’s future or have a question about getting started? Call Polaris Estate Planning and Elder Law today.
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