Arizona · Unpaid invoice

Unpaid invoice in Arizona small claims

Client won't pay your invoice? Collect it in small claims.

If a client or customer has not paid an invoice for work you delivered or goods you sold, small claims court is a low-cost way to collect. You do not need a lawyer. The strength of your case usually comes down to clear proof: the agreement or terms, the invoice, evidence the work or goods were delivered, and a record of your attempts to collect.

In Arizona, small-claims cases are heard in the Small Claims Division of the Justice Court and you can sue for up to $5,000 (exclusive of interest and costs).

Unpaid invoice: steps that matter

  1. Send a final written demand (a clear statement of what is owed and a payment deadline) and keep proof you sent it.
  2. Gather your contract or written terms, the invoice, delivery/completion proof, and any messages showing the other side accepted the work.
  3. Confirm you are within the statute of limitations below before you file.
  4. File in the correct court for where the defendant is or where the work happened, and keep every date and document together.

Filing your Small Claims Complaint (form LJSC00001F) in Arizona

  1. Confirm your claim qualifies. Your claim must be for $5,000 or less and a type small claims can hear (not eviction, defamation, or injunctive relief). File in the justice court precinct where the defendant lives (A.R.S. 22-202).
  2. Complete and file the Complaint and Summons. Fill out the Small Claims Complaint (LJSC00001F) and Summons (LJSC00002F) from the azcourts.gov forms hub and file them with the small claims division clerk. Pay the filing fee or request a fee waiver.
  3. Serve the defendant. Serve the summons and complaint by registered or certified mail; if mail service fails, use personal service. File proof of service with the court (A.R.S. 22-513).
  4. The defendant answers within 20 days. The defendant must answer within 20 days of service (A.R.S. 22-514). If they do not answer, you may seek a default judgment.
  5. Attend the hearing. A hearing officer or justice of the peace hears the case. You represent yourself; lawyers may take part only if both sides agree in writing. The decision is final.

Filing fees: Filing fees are set by each justice court and vary by precinct; confirm the amount with the court. A fee waiver or deferral is available if you cannot afford the costs.

Deadline that applies to your unpaid invoice

An unpaid invoice is usually a contract or account claim. If you had a signed agreement or written terms, the written-contract statute of limitations below typically applies; a purely verbal deal usually falls under the oral-contract period. That statute is the deadline to file, so do not wait too long.

Written contract or debt: 6 years (A.R.S. § 12-548)

Answering a lawsuit: The defendant must file an answer within 20 days after being served (A.R.S. 22-514). If they do not answer, you may seek a default judgment.

Serving the defendant: The plaintiff serves the summons and complaint by registered or certified mail; if that fails, personal service by a process server or authorized officer may be used, with an affidavit of service filed (A.R.S. 22-513).

Appeals: There is no appeal: a small-claims decision is final and binding (A.R.S. 22-519). To preserve appeal rights, a party must have the case transferred to the regular civil division of the justice court before the hearing.

This page is general information, not legal advice, and CaseBySelf is not a law firm. Rules, fees, and deadlines change and vary by court: verify with the specific court where you file. Source: Arizona Judicial Branch: Small Claims Self-Service Center. Last reviewed 2026-06-23.