Arizona Small Claims Plaintiff Response to Counterclaim is a formal written response by a plaintiff to a defendant's counterclaim in a small claims case. In Arizona, the plaintiff has 20 days from the date of service to file a response to a counterclaim. Depending on the specific facts of the case, the plaintiff's response may include denying the defendant's counterclaim, admitting some of the defendant's claims, or filing a cross-claim or counter-counterclaim against the defendant. The plaintiff's response must be in writing and must be signed by the plaintiff or the plaintiff's attorney. The two main types of Arizona Small Claims Plaintiff Response to Counterclaim are: 1. Denial: A denial is a formal statement in which the plaintiff denies the defendant's counterclaim. 2. Admission: An admission is a formal statement in which the plaintiff admits some or all of the defendant's counterclaim.