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Michigan Form MC 21: Confidential Case Inventory (Domestic Relations and Juvenile)
What this form does, who files it, what it costs, and how to avoid the errors that get Michigan filings rejected.
Reviewed and updated by the Clear Path document team. Informational only — not legal advice.
Quick Answer
What is Michigan form MC 21?
Form MC 21 lists every other family or juvenile case involving the same children or parties, so the circuit court can assign your case to the judge who already knows the family.
Who files it
The party starting a domestic relations or juvenile case in the family division.
Where it goes
Filed with the circuit court clerk at the same time as your initial complaint or petition.
Filing fee
No separate fee — it is an attachment to your initial filing.
What you need before you start
- Names and dates of birth of the children involved
- Case numbers of any prior divorce, custody, support, PPO, or juvenile cases
- The counties where those cases were filed
How to complete and file form MC 21
- 1
Gather case numbers for every related prior case you know of.
- 2
Complete the inventory listing each case and county.
- 3
File it with your complaint or petition — the clerk may reject the filing without it.
- 4
Update the court if you later learn of another related case.
Mistakes that get MC 21 rejected
- Leaving it blank when prior cases exist, which delays judge assignment
- Forgetting cases filed in another Michigan county
- Guessing at case numbers instead of confirming them with the clerk