A Missouri Small Claims Counterclaim Petition is a legal document used in the state of Missouri to file a counterclaim in a small claims court case. A counterclaim is a claim that is made by the defendant against the plaintiff in a lawsuit. The counterclaim is usually made in response to the plaintiff's original claim. The Missouri Small Claims Counterclaim Petition must be filed in the court where the original claim was filed. The petition must include the defendant's name and address, the plaintiff's name and address, the date of the original claim, the amount of the claim, and the defendant's counterclaim. The defendant must also provide evidence to support the counterclaim. There are two types of Missouri Small Claims Counterclaim Petitions: the standard counterclaim petition, and the joint counterclaim petition. The standard counterclaim petition is used when a single defendant is filing a counterclaim against the plaintiff. The joint counterclaim petition is used when two or more defendants are filing a joint counterclaim against the plaintiff.