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Unpaid invoice in California 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 California, small-claims cases are heard in the Small Claims Court (the small claims division of the Superior Court) and you can sue for up to $12,500 (for individuals; $6,250 if you are a business).

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 Plaintiff's Claim and ORDER to Go to Small Claims Court (form SC-100) in California

  1. Fill out forms. Complete the Plaintiff's Claim and ORDER to Go to Small Claims Court (form SC-100), stating who you are, who you're suing, why, how much, and why you're suing in that county. The official self-help guide lists three steps: "Fill out forms," "File with court," and "Serve your claim."
  2. File with the court. File the completed SC-100 with the small claims court (the superior court) in the correct county and pay the filing fee (between $30 and $100), or request a fee waiver (form FW-001) if you can't afford it. The court gives you a trial date, typically about 1-2 months out.
  3. Serve your claim on the defendant. Have another adult (not you, and not part of the case) serve the defendant. Your server must deliver the forms at least 15 days before your court date, or 20 days before if the person/business/government is in a different county from where you filed.
  4. File proof of service. Have the server complete a Proof of Service (form SC-104) and file it with the court clerk so the court knows the defendant was properly served before the trial date.
  5. Go to your trial. Appear at your scheduled court date with your evidence and witnesses. You cannot bring a lawyer to court for a small claims case, though you may consult one beforehand.

Filing fees: Filing and service fees are set locally and vary; confirm the current amount with the court. A fee waiver 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: 4 years (Code of Civil Procedure section 337)

Answering a lawsuit: There is no written answer in California small claims. The defendant does not file a written response before the hearing; they simply come to the scheduled court date to present their side (or may file a Defendant's Claim, form SC-120, to sue back, which has its own deadline).

Serving the defendant: You cannot serve the papers yourself; another adult (18 or older, not part of the case) must serve the defendant. The server must deliver the forms at least 15 days before the court date, or 20 days before if the defendant is in a different county from where you filed.

Appeals: Only the side who owes money can appeal (usually the defendant). You must file an appeal within 30 days from when the Notice of Entry of Judgment (form SC-130 or SC-200) was handed or mailed to you, using a Notice of Appeal (Small Claims) (form SC-140). The appeal is a new trial before a different judge.

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: California Courts Self-Help Guide - Small claims in California. Last reviewed 2026-06-23.