Serving the defendant
The plaintiff arranges and pays for service after filing; the court does not serve the defendant.
- Registered or certified mail, restricted delivery, return receipt requested
- Personal service by a licensed/registered private process server
- Any other method of service permitted by the Arizona Rules of Small Claims Procedure
Certified mail without a restricted-delivery return receipt signed for the defendant may not be valid service and will stall or end the case.
Where filers get this wrong
Two things about service are consistently misunderstood:
- The clerk accepts your filing whether or not service is later done properly. The counter is not the check.
- Whether service was good gets tested afterwards — typically at the moment you ask the court for a default because the defendant did not appear.
Service is governed by the Arizona Rules of Small Claims Procedure. The defendant must file a written Answer within 20 calendar days after service. Proof of service must be filed with the court or the case may be dismissed.
Certified mail without a restricted-delivery return receipt signed for the defendant may not be valid service and will stall or end the case.
The order it has to happen in
- 1. File first. The court issues the summons. Papers that have not been issued cannot be served.
- 2. Choose a permitted method. Arizona permits 3 routes, listed above. Which is wise depends on the defendant, not on which is cheapest.
- 3. Give a real, current address. A registered agent address for a business, a residence for a person. A stale address is the most common reason service fails and a case simply stops moving.
- 4. Get the proof on the docket. The server files a return of service. Without it the court treats the defendant as never notified.
Certified mail without a restricted-delivery return receipt signed for the defendant may not be valid service and will stall or end the case.
- Claim limit
- $5,000
- Court
- Justice Court
- File online
- Yes (statewide)
- Appeal window
- None — final
Common questions
Who serves small claims papers in Arizona?
The plaintiff arranges and pays for service after filing; the court does not serve the defendant.
Can I serve the papers myself in Arizona?
No. Service is carried out by someone who is not a party to the case. Handing the papers over yourself does not count, and the defect usually surfaces at the worst moment.
Can small claims papers be served by mail in Arizona?
Arizona permits a mail route where the case type allows it. Certified mail without a restricted-delivery return receipt signed for the defendant may not be valid service and will stall or end the case.
What happens if the defendant cannot be found?
The case does not move forward. Courts have alternative-service procedures for that situation, but they have to be applied for and they are not granted automatically.
Pick the county where you would sue
Small claims is filed at the county level. Pick your county for its court, fee, and forms — or start your claim and we'll ask where you'd sue.
Start my claimYour small claims filing packet — $49
Everything above, assembled and filled in with your facts:
- Your court's own forms, with your claim written in the language the court expects
- A demand letter built from the same facts
- A filing checklist with your court's address, hours, and fee
- What to bring to your hearing
Answer a few questions first. See your claim written out before you pay anything.
Reviewed by Small Claims Desk · Last reviewed 2026-08-20 · Sourced from Arizona judiciary self-help resources and each county's clerk of court and A.R.S. Title 22, Ch. 5, Art. 2 — Small Claims (§§ 22-501 to 22-524); §22-503 sets the $5,000 limit exclusive of interest and costs. See how we verify.