Quick answer: most Michigan estates use informal administration — processed by the probate register, minimal court involvement, comparatively fast. Supervised administration, requiring court approval at nearly every step, applies when contested or requested. See how this affects your own estimate in the Michigan probate timeline calculator.
Side by side
| Informal | Supervised | |
|---|---|---|
| Who processes it | Probate register | Judge |
| Court approval for routine actions | Minimal | Required at nearly every step |
| Default status | Practical default for uncontested estates | Applies on request or for cause |
| Typical timeline | 7–12 months | Meaningfully longer |
Informal administration is the Michigan default
MCL 700.3301 et seq. and § 3704: most Michigan estates proceed informally, with the probate register processing the paperwork rather than a judge reviewing every action. The personal representative is expected to handle routine matters — collecting assets, paying valid claims, making distributions — without a separate court order for each one, paired with real fiduciary accountability if something goes wrong.
When supervision takes over
An interested party can petition for supervised administration, and this can happen even after an estate has already opened informally — a dispute that surfaces partway through, over the will's validity or how the personal representative is handling assets, can shift a case onto the slower, court-supervised track mid-stream.
Facing probate in Michigan?
Talk to a Michigan attorneyA local probate attorney can review your estate — many offer a free consultation.