About Petition to Require Administration
To petition the court to require a person entitled to administer a decedent's estate to apply for letters testamentary or of administration, or to appoint an alternative personal representative if they fail to do so.
When you'd use it: When more than twenty days have passed since the decedent's death and no eligible person has filed an application for letters testamentary or of administration.
Where to get the official form
The official version of Petition to Require Administration is published as a PDF by the Missouri courts. We checked this link and it resolved to a form on an official court or government website — always download the current version directly from the source rather than a third-party copy:
Download Petition to Require Administration (PDF) →
Source: greenecountycourts.org
Link last checked: May 31, 2026
How to file Petition to Require Administration in Missouri
- Step 1 — Confirm you have the correct formUse Petition to Require Administration (PC126) when when more than twenty days have passed since the decedent's death and no eligible person has filed an application for letters testamentary or of administration. Double-check it's the right form for your situation — Missouri probate forms are revised periodically, so verify the name and number against your court's current form list before you start.
- Step 2 — Complete every required fieldFill out Petition to Require Administration carefully and review it for errors before filing. Probate cases can already take months — a small mistake on the form can set your timeline back further.
- Step 3 — Get it notarized or witnessed if requiredSome probate forms must be signed in front of a notary or witnesses. Check the instructions on the form itself, and arrange notarization before you file if it's required.
- Step 4 — File it with the correct courtSubmit Petition to Require Administration to the probate court or county clerk handling the estate — usually in the Missouri county where the deceased lived. Ask the clerk how they prefer to receive filings (in person, by mail, or e-filing).