(A) Form of Action. There is one form of action known as a “civil action.”
Rule 2.101.Form and Commencement of Action
Current through May 1, 2026 · Last verified July 6, 2026
In one sentenceRule 2.101 establishes that Michigan has a single form of lawsuit, the civil action, and that it begins the moment a complaint is filed with the court.
Full Text of Rule 2.101
(B) Commencement of Action. A civil action is commenced by filing a complaint with a court.
Amendment History
Michigan tracks the orders that adopt and amend its Court Rules in a separate administrative record rather than printing a history note beneath each rule in the compiled rules text reproduced here. The text above is verified current through the source’s own May 1, 2026 update; for the full order-by-order history of this rule, see the Michigan Supreme Court’s rules and orders page.
Plain-English Summary
Rule 2.101 is short, but it does real work. Subrule (A) declares that there is only one kind of civil lawsuit in Michigan: the civil action. Older legal systems split cases into separate categories — actions at law and suits in equity — each with its own court and procedure. Michigan collapsed that distinction well before these rules existed, and Rule 2.101 confirms there is now a single, unified procedural track for every civil case.
Subrule (B) answers a more practical question: when does a case legally start? The answer is the moment the plaintiff files a complaint with the court. Nothing else has to happen first — not service on the defendant, not payment confirmation, not any other formality. That filing date matters well beyond bookkeeping, since it is typically the date used to decide whether a claim was brought before the statute of limitations ran out and to measure other deadlines that count from when the case began.
Frequently Asked Questions
What is a 'civil action' under Rule 2.101?
It is the single, unified form of lawsuit Michigan uses for civil cases; the rule does away with any distinction between older forms of legal and equitable actions.
When does a lawsuit officially begin in Michigan?
A civil action commences the moment the complaint is filed with the court — before a summons issues or the defendant is served.
Why does the filing date matter so much?
It is typically the date courts use to decide whether a claim was filed within the statute of limitations, and it starts the clock on several other deadlines tied to when the action began.
Source & verification. The rule text is reproduced verbatim from the
official Michigan Court Rules (MCR 2.101). Prescribed by the Supreme Court of Michigan (Mich. Const. 1963, art. VI, § 5). The plain-English summary is original and written by us. Last verified July 6, 2026. ·
Official source
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