How Does a Counterclaim Work in Small Claims Court?
How does a counterclaim work in small claims court? Getting served feels like the story is over. It is not over. The person being sued can sue right back, in the same court, and have both claims decided at one hearing. If the plaintiff owes you money from the same dispute, the counterclaim is how you make the judge hear your side of the ledger.
Being Sued Does Not Mean You Only Defend
A counterclaim is simply your own claim against the person who sued you, filed in the same case. The classic example: a landlord sues a former tenant for $2,000 in damages, and the tenant counterclaims for a $1,800 security deposit that was never returned. The judge hears the landlord's claim and the tenant's counterclaim together, and the final judgment nets them against each other.
Most states require the counterclaim to be related to the original dispute. Same-transaction claims are the clean case: unpaid wages against a botched-job complaint, repair costs against a nonpayment complaint. A few courts are broader and allow unrelated counterclaims, but related is the safe default. In either event, the counterclaim must fit under the court's dollar limit, the same $2,500 to $25,000 cap that governs regular claims. If your counterclaim is bigger than the limit, the case usually moves to a higher court with more formal rules, and that trade-off is worth understanding before you file.
The Mechanics: Fee, Form, Service
The process is deliberately cheap and simple, because the point of small claims is access.
- Get the counterclaim form. Most courts call it a Defendant's Claim or Counterclaim form. California uses Form SC-120. Grab it from the court website or the clerk's office.
- Fill it out with the same care as a real claim. Include the original case number, your details, the plaintiff's details, the amount you are asking for, and a clear explanation of why. Do not fold the filing fee into the claimed amount; the fee gets added to your judgment separately if you win.
- File it with the court and pay the fee. Counterclaim filing fees typically run $30 to $100 depending on the state and the amount claimed. Connecticut charges $95 for a small claims counterclaim. New York charges $5 plus the cost of mailing. Some jurisdictions charge no separate fee at all.
- Serve the plaintiff. The other side gets a copy of your counterclaim through the court's approved method: certified mail, or personal service by a process server or sheriff.
- Meet the deadline. This is the timing trap. Filing windows vary: some courts want the counterclaim with your answer, some allow it up to 10 to 20 days before the hearing, and a few allow it on the day of the hearing itself. File as early as you can. If you file on trial day, the plaintiff can ask for a postponement to prepare, and judges often grant it even when nobody asks.
Do Not File One Out of Spite
This is my honest advice on counterclaims: file one when you have a real claim, not when you want payback. Judges see retaliation counterclaims constantly, and a thin one does not just lose. It makes the rest of your case look weaker by association. The judge who just watched you throw a bad counterclaim at the plaintiff is less inclined to believe your defense.
Before filing, ask yourself two questions. First, would this claim survive as its own case if the other side had never sued me? If the answer is no, do not file it. Second, can I prove it with documents and witnesses, the way any plaintiff would have to? A counterclaim is not a defense. It is an offensive case you have to win with evidence. If it would not stand alone, it will not stand as a counterclaim.
One more practical point: the counterclaim is its own case with its own fee, so if the plaintiff's claim is dismissed or withdrawn, your counterclaim can still be decided. That protects the defendant with a genuine grievance. The plaintiff who files first cannot walk away from your claim. And if you win, remember that collecting the judgment is a second process the court will not do for you.
Frequently Asked Questions
How much does it cost to file a counterclaim in small claims court?
Typically $30 to $100, depending on the state and the amount you claim. Connecticut charges $95 for a small claims counterclaim; New York's small claims counterclaim costs $5 plus mailing. The fee is added to your judgment if you win.
Does my counterclaim have to be related to the original lawsuit?
In most states, yes: the counterclaim should arise from the same transaction or dispute. Some states are broader and allow unrelated counterclaims, but the related ones are the ones courts handle cleanly. Check your court's rules.
What happens if my counterclaim is more than the small claims limit?
The case may be transferred to a higher court with more formal rules. You may also be allowed to limit your counterclaim to the small claims maximum, but you give up the right to the rest of that claim.
Can I file a counterclaim on the day of the hearing?
In some states, yes, but it is risky. The plaintiff can ask the judge to postpone the case so they have time to prepare, and judges often grant that request even when it is not asked for. File as early as your court's deadline allows.
Do I have to pay the filing fee even if the judge dismisses the original case?
Yes. The counterclaim is its own case with its own fee, and it can be decided even if the plaintiff's original claim is dismissed or withdrawn. Your fee is not refunded, but it is added to your judgment if you win.
Know the Filing Fees Before You Start
A counterclaim has its own fee, so budget for two filings. See what filing costs in your state before you commit.
Compare Fees by State