Mich. Ct. R. 6.120

As amended through April 3, 2024
Rule 6.120 - Joinder and Severance; Single Defendant
(A) Charging Joinder. The prosecuting attorney may file an information or indictment that charges a single defendant with any two or more offenses. Each offense must be stated in a separate count. Two or more informations or indictments against a single defendant may be consolidated for a single trial.
(B) Postcharging Permissive Joinder or Severance. On its own initiative, the motion of a party, or the stipulation of all parties, except as provided in subrule (C), the court may join offenses charged in two or more informations or indictments against a single defendant, or sever offenses charged in a single information or indictment against a single defendant, when appropriate to promote fairness to the parties and a fair determination of the defendant's guilt or innocence of each offense.
(1) Joinder is appropriate if the offenses are related. For purposes of this rule, offenses are related if they are based on
(a) the same conduct or transaction, or
(b) a series of connected acts, or
(c) a series of acts constituting parts of a single scheme or plan.
(2) Other relevant factors include the timeliness of the motion, the drain on the parties' resources, the potential for confusion or prejudice stemming from either the number of charges or the complexity or nature of the evidence, the potential for harassment, the convenience of witnesses, and the parties' readiness for trial.
(3) If the court acts on its own initiative, it must provide the parties an opportunity to be heard.
(C) Right of Severance; Unrelated Offenses. On the defendant's motion, the court must sever for separate trials offenses that are not related as defined in subrule (B)(1).

Mich. Ct. R. 6.120