How to Countersue Someone (And What Happens When You Do)
To countersue, you file your own claim against the person suing you, inside the same case. Courts call it a counterclaim. In small claims court, that means one short form (California uses the SC-120 Defendant's Claim), a filing fee that usually runs $5 to $75, and getting a copy served on the plaintiff before the hearing. The judge then hears both claims on the same day. Move fast, because some states give you as little as five days before the court date.
That is the mechanical answer. The better question is whether you should countersue at all. And if you are on the other side, whether the countersuit threat someone just texted you means anything. Let's take both.
What a countersuit actually is
A countersuit is a claim the defendant files back against the plaintiff in the same lawsuit. The legal term is counterclaim. It is not a defense. It is its own demand for money.
A defense says "I don't owe you." A counterclaim says "actually, you owe me." You can raise both at once. People do it all the time.
Say a landlord sues a former tenant for $2,000 in damage. The tenant fights back on two fronts: the "damage" is normal wear and tear, and by the way, you never returned my $1,800 deposit. That deposit demand is a counterclaim. One hearing. Both claims. One judge sorting out who really owes what.
Two cousins you might bump into. A cross-claim targets someone on your own side of the case. A third-party claim drags a brand new person into the lawsuit. Most small claims fights never touch either one, so don't sweat them.
If you sue someone, can they countersue you?
This is the fear that stops people from filing in the first place. So here is the honest version.
Yes, they can countersue. Anyone can file a counterclaim. It takes a form and a small fee.
Winning is a different sport. A counterclaim needs its own real story: money they lost, caused by you, with proof. Being sued is not damages. Nobody gets paid for the stress of receiving your lawsuit. "You sued me, so I'm suing you" is not a legal claim, and judges have seen that move a thousand times.
Scare countersuits usually exist for one reason: to make you drop a case you would win. If your claim is honest and your paper trail is solid, a threat to countersue is mostly noise. They still need evidence. They still have to convince the same judge who is holding your receipts. If you're still building that case, start with our guide to suing someone.
The flip side is real, though. If you inflate your claim or invent facts, you hand them ammunition. Courts can punish bogus filings, and a truly fake lawsuit can come back later as its own case against you. Sue for what you can prove. Not a dollar more.
One more thing worth knowing before the fear takes over: most money disputes never see a courtroom at all. In our experience, about 70% of cases resolve after a firm demand letter and steady follow-up, with no filing, no hearing, and no countersuit.
The use-it-or-lose-it rule
A compulsory counterclaim is a claim that comes from the same deal, fight, or event as the lawsuit against you. In most courts, you have to raise it in this case or you lose it forever.
This is the rule that quietly wrecks people. They get sued, they win or settle, and a year later they try to bring their own claim from the same mess. The court says: too late. You had your chance.
Example. A contractor sues you for a $3,000 unpaid balance. You believe the same job flooded your kitchen and cost you $2,500. Those claims grew from the same project. Sit on yours, and you may never get to bring it. Raise it now.
An unrelated claim is called permissive. The neighbor suing you over a fence also owes you $500 from a loan in March? You can counterclaim it or sue separately later. Your call.
Small claims courts tend to be looser about this rule than big civil courts. Don't gamble on loose. If your claim comes from the same mess, bring it now.
How to countersue, step by step
- Read the claim against you. Note the court, the case number, and the hearing date. Every deadline counts backward from that date.
- Check that your claim is real. You need an actual money loss, proof of it, and a claim that is not past your state's deadline to sue.
- Get the counterclaim form. In California it is form SC-120, the Defendant's Claim. Other states fold it into the answer form or use a plain claim form. The clerk's office or the court website has it.
- File it and pay the fee. Usually $5 to $75, based on your state and the amount you are claiming. Fee waivers exist if money is tight.
- Serve the plaintiff. A copy has to reach them the legal way, and in most states you cannot hand it over yourself. Here is how serving court papers works.
- Show up ready to fight both claims. Bring your defense evidence and your counterclaim evidence. Those are two separate piles. Photos, texts, invoices, and receipts for each.
Counterclaim deadlines, fees, and limits by state
The mechanics change state by state, and sometimes county by county. Here is how six big ones handle it.
| State | How you countersue | Deadline | Small claims limit |
|---|---|---|---|
| California | Form SC-120, fee $30 to $75 | Serve at least 5 days before the hearing (1 day if you were served 10 days or less before it) | $12,500 for people, $6,250 for most businesses |
| New York City | File with the clerk, $5 fee | Within 5 days of getting notice, or raise it at the hearing | $5,000 for counterclaims |
| Texas | Counterclaim in justice court, small fee | File before trial, ideally with your answer | $20,000 |
| Florida | Written counterclaim filed with the court | At least 5 days before the pretrial conference | $8,000 |
| Nevada | File and serve your own claim form | Before the hearing | $10,000, and you waive anything above it |
| Illinois | Counterclaim filed in the same case | Before trial, and some courts want 5 days' notice | $10,000 |
Every state caps how much you can ask for in small claims. Check yours in our state-by-state limits table, then call the clerk to confirm the local counterclaim rule. Clerks answer this question every day.
What if your counterclaim is bigger than the limit?
You have two options, and they pull in opposite directions.
Option one: waive the extra. Say your counterclaim is worth $15,000 and you are in California, where the cap is $12,500. You can stay in small claims, claim $12,500, and give up the rest. You trade $2,500 for speed. Small claims hearings happen in weeks or a few months, there are no lawyers to pay, and the paperwork is one form.
Option two: move the case up. In many states you can ask the court to transfer the whole fight to regular civil court, where there is no cap. That gets you the full amount on paper. It also buys you months or years of process, and probably lawyer bills that eat the difference.
For most people, the math favors waiving. A fast $12,500 beats a slow, expensive maybe at $15,000. Run your own numbers before you decide.
What happens at the hearing
There is one hearing, not two. The judge hears the plaintiff's claim, then your counterclaim, usually inside the same 15 to 30 minutes. If you have never seen one, here is what actually happens in small claims court.
Four outcomes are possible.
| Outcome | What it means |
|---|---|
| You win both | Their claim is denied and your counterclaim is granted. They owe you. |
| They win both | Your counterclaim is denied and their claim is granted. You owe them. |
| Both claims win | The judge offsets them. They prove $2,000, you prove $1,800, so you pay the $200 difference. |
| Both claims lose | Nobody proved anything. Everyone goes home unpaid. |
That offset row matters. It is why counterclaims are powerful for defendants. Even a partial win shrinks what you pay. And remember that winning on paper is not the same as getting paid. Here is what happens when the loser has no money.
Mistakes that sink counterclaims
- Countersuing out of spite. Judges smell revenge claims instantly. A weak counterclaim makes your real defense look weaker too.
- Missing the service deadline. The most common killer. Your claim can get bumped or tossed because the plaintiff never got proper notice.
- Claiming the lawsuit itself as your damage. Stress, annoyance, and time spent fighting the case are not a claim.
- Sitting on a same-event claim. The use-it-or-lose-it rule does not send a warning letter. It just closes the door.
- Bringing defense evidence only. Your counterclaim needs its own proof. A judge cannot award money on vibes.
- Refusing to settle when the math is obvious. If the offset leaves a $200 gap, settling in the hallway beats an hour under oath.
FAQ: Countersuing in small claims court
Can someone countersue me for suing them?
They can file a counterclaim, but they need their own real claim against you. The stress or cost of being sued does not count as damages. If your case is honest and documented, a countersuit threat is mostly a pressure tactic.
Does it cost money to file a counterclaim?
Yes, but not much. New York City charges $5. California charges $30 to $75 based on the amount. Most states land in that range, and courts offer fee waivers if you cannot afford it.
Can a countersuit ask for more than the original lawsuit?
Yes. A counterclaim is its own claim with its own amount. If it goes over the small claims cap, the defendant can waive the extra and stay in small claims, or ask to move the whole case to regular civil court.
What happens if I ignore a counterclaim?
The judge can rule on it without your side of the story, and that usually means you lose it. Treat a counterclaim like a lawsuit, because it is one. Show up with evidence against it.
Can you countersue for emotional distress?
Only with a real emotional distress claim, which is hard to prove and needs far more than hurt feelings. Being upset that someone sued you is never enough on its own.
Can I countersue for my legal fees or lost time?
Usually no. Most states only let the winner recover filing costs and service costs, not hours spent or wages missed. A few specific claims come with fee awards built in, so ask the clerk about yours.
What's the difference between a counterclaim and a countersuit?
Nothing, in everyday use. Countersuit is the casual word. Counterclaim is what courts call a claim filed back inside the same case. A separate lawsuit filed later is just a new lawsuit.
Can I skip the counterclaim and sue them later?
Only if your claim has nothing to do with the case they filed. If it comes from the same event or deal, most courts treat it as use it or lose it. When in doubt, raise it now.
Don't let the threat decide for you
Countersuits scare people out of good cases every single day. That is usually the whole point of the threat. If someone owes you money and you can prove it, their bluster does not change your math.
PettyLawsuit has helped with 2,500+ cases, and most of them ended without anyone standing in front of a judge. We send the demand letter instantly, follow up by phone and email, and prep the court filing if it comes to that. Start your case and don't let it slide.