What Is a Counterclaim in Civil Court? A Complete Guide

Last updated: October 2026

If someone sues you in civil court, you may think your only job is to defend yourself against the allegations. But sometimes you also have a legal claim against the person who sued you. In that situation, you may be able to assert a counterclaim in the same lawsuit.

So, what is a counterclaim? A counterclaim is a claim for relief that an opposing party asserts against the party who brought the original claim. In the most common situation, the defendant asserts a claim against the plaintiff within the same lawsuit.

For example, imagine that a customer sues a contractor for allegedly failing to complete a renovation. The contractor denies the allegations but also claims that the customer failed to pay $20,000 for work that was completed. The contractor’s claim for the unpaid amount could potentially be a counterclaim.

Counterclaims are important because they can turn a lawsuit into a two-sided dispute. The plaintiff is no longer the only party seeking relief. The defendant may also ask the court to award money damages or another form of legal relief.

This guide explains what is a counterclaim, how counterclaims work, the difference between compulsory and permissive counterclaims, how to file one, what a counterclaim should include, filing deadlines, jurisdiction, defenses, setoffs, crossclaims, third-party claims, and what happens after a counterclaim is filed.

What Is a Counterclaim?

A counterclaim is a legal claim brought by one party against an opposing party within an existing lawsuit.

In a typical civil case:

• The plaintiff files a complaint.
• The defendant responds.
• The defendant may raise defenses.
• The defendant may also assert a counterclaim against the plaintiff.
• The plaintiff then becomes the party defending against the counterclaim.

The important distinction is that a counterclaim is an affirmative claim for relief.

For example:

Defense:

“The defendant did not breach the contract.”

Counterclaim:

“The plaintiff breached the contract and owes the defendant $15,000.”

A defendant can raise both a defense and a counterclaim in the same case.

Counterclaim Meaning in Simple Terms

In simple terms, a counterclaim means:

“You sued me, but I also have a legal claim against you arising from this dispute or another legally permissible matter.”

The counterclaim does not necessarily mean the defendant agrees with anything in the plaintiff’s complaint.

A defendant can deny the plaintiff’s allegations while simultaneously asserting a counterclaim.

Federal pleading rules permit alternative and, in appropriate circumstances, inconsistent claims and defenses.

How Does a Counterclaim Work?

A simplified civil lawsuit may proceed like this:

1. The plaintiff files a complaint.
2. The defendant is served.
3. The defendant responds to the complaint.
4. The defendant raises applicable defenses.
5. The defendant asserts a counterclaim if appropriate.
6. The plaintiff responds to the counterclaim.
7. The parties conduct discovery.
8. The parties may file motions or negotiate a settlement.
9. The court may conduct a trial.
10. The court enters judgment on the claims that remain.

The original plaintiff’s claim and the defendant’s counterclaim can therefore be litigated within the same case.

What Is a Counterclaim Example?

Consider a breach-of-contract dispute.

A company, Alpha Manufacturing, sues Beta Supplies for allegedly failing to deliver equipment under a contract.

Beta Supplies denies that it breached the contract.

Beta also claims that Alpha failed to pay $40,000 that was due under the same agreement.

Beta could potentially assert a counterclaim seeking the unpaid $40,000.

The case could therefore contain:

The court could then address the parties’ competing claims in the same litigation.

What Are the Two Types of Counterclaims?

Federal Rule of Civil Procedure 13 generally divides counterclaims into:

1. Compulsory counterclaims
2. Permissive counterclaims

The distinction is important because a compulsory counterclaim generally must be asserted in the existing action when the rule applies.

What Is a Compulsory Counterclaim?

A compulsory counterclaim is generally a claim against an opposing party that:

• Exists when the responsive pleading is served;
• Arises out of the same transaction or occurrence as the opposing party’s claim; and
• Does not require adding a party over whom the court cannot obtain jurisdiction.

Federal Rule 13(a) establishes this general requirement and also contains exceptions.

What Does “Same Transaction or Occurrence” Mean?

This is one of the most important concepts when determining whether a counterclaim is compulsory.

The phrase generally focuses on the relationship between the underlying events, facts, evidence, and legal dispute.

For example, suppose:

• A customer sues a contractor for defective construction.
• The contractor claims the customer failed to pay for that same construction project.

Both claims arise from the same underlying project. The contractor’s claim may therefore qualify as a compulsory counterclaim under the applicable rules.

The legal theories do not have to be identical.

One party might assert negligence while the other asserts breach of contract. What matters is the connection between the underlying transaction or occurrence and the requirements of the governing law.

Why Does a Compulsory Counterclaim Matter?

The classification can have significant consequences.

If a defendant fails to assert a compulsory counterclaim that should have been brought in the original action, the defendant may later face claim-preclusion consequences.

That is why a defendant should identify potential claims against the plaintiff early in the case.

Exceptions to the Compulsory-Counterclaim Rule

Federal Rule 13 includes exceptions.

For example, a claim generally does not have to be asserted as a counterclaim if it was already the subject of another pending action when the original action was commenced. The rule also contains an exception involving certain proceedings that did not establish personal jurisdiction over the pleader.

A court may also permit an omitted counterclaim to be added through an amendment in appropriate circumstances.

What Is a Permissive Counterclaim?

A permissive counterclaim is a counterclaim that is not compulsory under Rule 13.

Federal Rule 13(b) permits a party to assert a counterclaim against an opposing party that is not compulsory.

A permissive counterclaim can involve a different dispute.

For example:

• A landlord sues a tenant for unpaid rent.
• The tenant separately claims the landlord owes money under an unrelated business agreement.

Depending on the circumstances and applicable law, the second claim could potentially be asserted as a permissive counterclaim.

However, federal jurisdiction must still be considered.

Compulsory vs. Permissive Counterclaim

Does a Counterclaim Need Separate Jurisdiction?

This is an important issue that many basic counterclaim guides overlook.

A federal court cannot hear every claim simply because that claim appears in a federal lawsuit.

Federal courts need subject-matter jurisdiction.

A counterclaim may fall within supplemental jurisdiction if it is sufficiently related to claims already within the court’s original jurisdiction.

Under 28 U.S.C. § 1367(a), federal district courts generally have supplemental jurisdiction over claims that are so related to claims within their original jurisdiction that they form part of the same constitutional case or controversy.

However, § 1367 also contains limitations and allows a court to decline supplemental jurisdiction in certain circumstances. For example, a court may decline jurisdiction if the state-law issue is novel or complex, the supplemental claim substantially predominates, the court has dismissed all claims within its original jurisdiction, or exceptional circumstances provide another compelling reason.

Why This Matters

A defendant should not assume:

“Because the original case is in federal court, every counterclaim automatically belongs there.”

The jurisdictional basis should be examined for the specific counterclaim.

How to File a Counterclaim

The precise filing process depends on the court and applicable procedural rules. In a federal civil case, a defendant considering a counterclaim should generally work through the following steps:

1. Review the complaint and identify potential claims against the plaintiff.
2. Determine whether the proposed claim is compulsory or permissive.
3. Check the applicable statute of limitations.
4. Confirm that the court has jurisdiction over the proposed claim.
5. Draft the counterclaim with the required factual and legal allegations.
6. Identify the damages or other relief being requested.
7. File the counterclaim with the appropriate responsive pleading or seek leave to amend when required.
8. Serve the opposing party according to the applicable rules.
9. Calendar all response and other procedural deadlines.

State courts can use different procedures, forms, deadlines, and terminology. Local court rules and case-specific orders can also impose additional requirements.

What Should a Counterclaim Include?

The exact requirements depend on the applicable procedural rules, but a counterclaim commonly identifies:

• The parties involved
• The jurisdictional basis
• The relevant facts
• The applicable causes of action or legal theories
• Supporting factual allegations
• The damages or other relief requested
• A jury demand, when applicable
• Any other information required by the governing court rules

Federal Rule 8 establishes general pleading requirements for claims and defenses.

A counterclaim should contain enough factual and legal information to satisfy the applicable pleading standards. A party should also review local court rules and any case-specific orders before filing.

Can a Counterclaim Be Larger Than the Original Claim?

Yes.

Federal Rule 13(c) states that a counterclaim does not have to merely reduce or defeat the plaintiff’s recovery. It can seek relief that exceeds the amount requested by the opposing party or differs in kind.

Example

The plaintiff sues for:

$25,000

The defendant asserts a counterclaim for:

$75,000

The counterclaim is not automatically limited to $25,000.

However, requesting $75,000 does not establish entitlement to $75,000. The defendant still has to establish the legal and factual basis for the requested relief.

What Is the Difference Between a Counterclaim and a Defense?

A defense challenges the plaintiff’s claim.

A counterclaim seeks affirmative relief against the plaintiff.

Example

The plaintiff says:

“You owe me $20,000.”

The defendant says:

“I already paid the $20,000.”

That is a defense.

The defendant also says:

“You breached the contract and owe me $10,000.”

That is a counterclaim.

A defendant can assert both.

Counterclaim vs. Setoff

A counterclaim is an affirmative claim for relief against an opposing party.

A setoff generally concerns reducing an amount owed by an amount that the claimant allegedly owes in return.

For example, suppose a plaintiff claims that a defendant owes $50,000 under a contract. The defendant might assert a separate counterclaim seeking $20,000 for damages. Depending on applicable law, the defendant might also argue that an amount the plaintiff owes the defendant should reduce the amount recoverable by the plaintiff.

The precise treatment of a setoff depends on applicable substantive and procedural law.

A setoff and counterclaim can sometimes arise from the same dispute, but they are not automatically the same legal concept.

Counterclaim vs. Crossclaim

A counterclaim is generally asserted against an opposing party.

A crossclaim is generally asserted against a coparty.

Federal Rule 13(g) governs crossclaims. A qualifying crossclaim generally must arise from the same transaction or occurrence that is the subject matter of the original action or a counterclaim, or relate to property that is the subject matter of the original action.

Example

Suppose a plaintiff sues Defendants A and B after a car accident.

• Defendant A sues the plaintiff: counterclaim.
• Defendant A asserts a qualifying claim against Defendant B: crossclaim.

The key distinction is who is being sued.

Counterclaim vs. Third-Party Claim

A third-party claim involves bringing a nonparty into the lawsuit under the requirements of Federal Rule of Civil Procedure 14.

For example:

• Plaintiff sues Contractor A.
• Contractor A believes Subcontractor B is responsible for some or all of the plaintiff’s claimed loss.
• Contractor A seeks to bring Subcontractor B into the case under Rule 14.

That is different from a counterclaim against the original plaintiff.

Rule 14 also contains situations in which third-party defendants can assert counterclaims or other claims.

Counterclaim vs. Defense vs. Crossclaim vs. Third-Party Claim

This comparison is especially useful because these terms are frequently confused.

Where Is a Counterclaim Filed?

In federal litigation, a counterclaim is generally included in a responsive pleading.

A defendant may file a document titled:

Answer and Counterclaim

The counterclaim normally identifies:

• The parties
• The factual allegations
• The legal basis for the claim
• The jurisdictional basis where required
• The requested relief

Federal Rule 8 establishes general pleading requirements for claims and defenses.

Local court rules can impose additional formatting and filing requirements.

When Should a Counterclaim Be Filed?

A compulsory counterclaim generally must be asserted in the responsive pleading when Rule 13(a) applies, subject to the rule’s exceptions and applicable amendment procedures.

A counterclaim should therefore be considered when preparing the defendant’s answer rather than treated as something that can always be added later.

If a claim arises after the pleading has been served, Rule 13(e) permits a court to allow a supplemental pleading asserting the later-maturing counterclaim.

How Long Do You Have to Answer a Counterclaim?

Under Federal Rule of Civil Procedure 12(a), a party generally must serve an answer to a counterclaim within 21 days after being served with the pleading containing the counterclaim.

This is a federal rule, not a universal deadline for every court.

Different deadlines can apply in particular circumstances, including cases involving the United States or certain federal officers and agencies.

Always check:

• The applicable rules
• The method of service
• Court orders
• Local rules
• Any granted extensions

What Happens If You Ignore a Counterclaim?

Ignoring a counterclaim can have serious procedural consequences.

Federal Rule 55 provides procedures for default when a party against whom affirmative relief is sought fails to plead or otherwise defend as required. The rule can therefore apply when a party fails to respond to a counterclaim.

Default does not necessarily mean the opposing party automatically receives every dollar requested. The court must follow the applicable default and judgment procedures, and additional proceedings may be necessary to determine damages.

The practical lesson is simple:

Do not ignore a counterclaim.

Can a Counterclaim Be Added Later?

Sometimes.

Federal Rule 15 governs amendments to pleadings, while Rule 13 addresses counterclaims that mature after the original pleading and certain omitted counterclaims.

A party may sometimes need:

• The opposing party’s consent
• Court permission
• A motion for leave to amend
• An explanation for why the claim was not asserted earlier

Whether amendment will be permitted depends on the circumstances and applicable rules.

What If You Forget a Compulsory Counterclaim?

If a potentially compulsory counterclaim was omitted, the defendant should address the issue promptly.

Federal Rule 13 addresses certain omitted and later-maturing counterclaims, while Rule 15 governs amendments to pleadings.

However, a defendant should not assume that an omitted compulsory counterclaim can always be filed later.

Potential consequences can include:

• Claim-preclusion issues
• Amendment problems
• Additional litigation
• Statute-of-limitations issues
• Increased legal costs

The precise consequence depends on the jurisdiction and facts.

What Happens to a Counterclaim if the Plaintiff Dismisses the Lawsuit?

A plaintiff’s attempt to dismiss the original lawsuit does not necessarily eliminate a properly asserted counterclaim.

The Federal Rules contain specific provisions governing voluntary dismissal when a counterclaim has been pleaded.

This matters because the defendant may have an independent interest in having the counterclaim resolved even if the plaintiff no longer wants to pursue the original claim.

The counterclaim does not automatically disappear in every situation. The court may need to determine whether it can and should continue exercising jurisdiction over the counterclaim.

This can become especially important when federal jurisdiction over the original claim was the basis for supplemental jurisdiction over a state-law counterclaim.

Under 28 U.S.C. § 1367(c), a federal court may decline supplemental jurisdiction when it has dismissed all claims over which it had original jurisdiction.

The exact result can depend on:

• Whether the dismissal is voluntary
• Whether the defendant has answered
• Whether a counterclaim is pending
• Whether the counterclaim can remain pending independently
• Whether the court has jurisdiction over the counterclaim

Therefore, dismissal of the original claim can affect the counterclaim without necessarily producing the same result in every case.

Can a Counterclaim Be Dismissed?

Yes.

A counterclaim can be challenged on various grounds.

Depending on the circumstances, a party might argue:

• The court lacks subject-matter jurisdiction.
• The court lacks personal jurisdiction.
• The pleading fails to state a legally sufficient claim.
• The claim is barred by the statute of limitations.
• The required parties are missing.
• Another procedural rule prevents the claim from proceeding.
• The counterclaim fails to satisfy applicable substantive law.

A court’s dismissal of a counterclaim does not necessarily mean that the underlying factual allegations were false.

A claim can fail because of jurisdiction, procedure, pleading defects, limitations, or substantive law.

Does a Counterclaim Have a Statute of Limitations?

Potentially, yes.

A counterclaim can raise statute-of-limitations issues depending on the nature of the claim and applicable substantive law.

Federal Rule 15 also contains relation-back rules that can matter when a party seeks to add a claim through an amended pleading.

The fact that a lawsuit is already pending does not mean a defendant can ignore applicable limitations periods.

This is another reason potential counterclaims should be identified early.

Can a Counterclaim Include Attorney’s Fees?

Potentially.

A party generally needs a legal basis for recovering attorney’s fees.

That basis might come from:

• A statute
• A contract
• A court rule
• Another recognized legal doctrine

Winning a counterclaim does not automatically mean that the counterclaimant will recover all attorney’s fees.

The applicable law must be examined.

Can a Counterclaim Lead to a Jury Trial?

Potentially.

Whether a jury trial is available depends on the nature of the claim and applicable law.

In federal court, Federal Rule of Civil Procedure 38 governs demands for jury trials when a jury right exists. The rule generally requires a written demand within the specified deadline.

Because adding a counterclaim can introduce new factual and legal issues, parties should consider jury-trial rights and deadlines when preparing pleadings.

State rules can differ.

What Happens to a Counterclaim During Settlement?

A counterclaim can be included in settlement negotiations.

For example, the parties may agree to resolve:

• The plaintiff’s original claim
• The defendant’s counterclaim
• Attorney’s fees
• Costs
• Related disputes
• Potential claims covered by a release

A settlement agreement should clearly state which claims are being resolved.

A party should not assume that settling the plaintiff’s claim automatically resolves every counterclaim or other dispute.

Can a Counterclaim Include More Than One Legal Theory?

Potentially.

A defendant may have multiple theories arising from the same underlying facts.

For example, a business dispute could potentially involve:

• Breach of contract
• Unjust enrichment
• Fraud
• Property damage

Whether multiple claims can properly be pleaded depends on the facts, applicable law, and procedural rules.

Federal pleading rules permit alternative and inconsistent claims in appropriate circumstances.

What Are Common Counterclaim Examples?

1. Breach of Contract

A customer sues a supplier for failing to deliver goods.

The supplier claims the customer failed to make required payments.

The supplier may assert a counterclaim for the unpaid amount.

2. Construction Dispute

A homeowner sues a contractor for defective work.

The contractor claims the homeowner failed to pay for completed work.

The contractor may assert a counterclaim based on the unpaid balance.

3. Car Accident

A driver sues another driver for property damage.

The defendant alleges that the plaintiff caused the accident and asserts a claim for the defendant’s own damages where permitted.

4. Business Dispute

A company sues a former business partner for alleged contract violations.

The former partner asserts a related claim for money allegedly owed under the same agreement.

5. Property Dispute

A property owner sues a neighbor over damage allegedly caused to property.

The neighbor asserts a related claim arising from the same events.

These examples are simplified. Whether a particular claim qualifies as a counterclaim depends on applicable law and the facts.

What Are the Advantages and Risks of a Counterclaim?

A counterclaim can provide procedural benefits, but filing one can also create additional litigation obligations.

Potential Benefits

A counterclaim can potentially:

• Resolve related disputes in one lawsuit
• Avoid filing a separate action
• Reduce duplicative discovery
• Allow overlapping evidence to be considered together
• Give the defendant an opportunity to seek affirmative relief
• Address related claims before the same court

Potential Risks and Costs

A counterclaim can also:

• Increase the complexity of the case
• Expand discovery
• Increase legal expenses
• Create additional factual disputes
• Require additional witnesses and evidence
• Raise jurisdictional questions
• Create additional deadlines
• Expose the counterclaimant to defenses or competing claims

Filing a counterclaim is therefore not merely a matter of adding another paragraph to an answer. It creates a substantive claim that must generally be supported and litigated.

What Are Common Mistakes With Counterclaims?

• Confusing a defense with a counterclaim: Denying an allegation is different from bringing your own claim.
• Ignoring compulsory-counterclaim rules: Saving a required counterclaim for later may prevent you from pursuing it.
• Missing the response deadline: Check when an answer to the counterclaim is due.
• Assuming federal rules apply everywhere: State courts have their own procedures.
• Overlooking jurisdiction: The court must have authority to hear the counterclaim.
• Waiting too long to file: Delays can cause filing or amendment problems.
• Expecting guaranteed compensation: You still need to prove your claim.
• Ignoring settlement wording: Check which claims the agreement resolves.
• Missing the jury-demand deadline: Request a jury within the applicable time limit if you have that right.

Practical Counterclaim Checklist

Before filing a counterclaim, check:

• The legal claim, opposing party, and supporting facts.
• Whether it is compulsory.
• Filing deadlines and limitation periods.
• The court’s jurisdiction and applicable rules.
• Whether additional parties are needed.
• Evidence and the relief requested.
• Possible defenses and settlement effects.
• Jury-trial rights and demand deadlines.

This checklist is general information, not case-specific legal advice.

What Is a Counterclaim in State Court?

The basic concept exists in many state court systems, but terminology and procedure vary.

State courts can have different rules governing:

• Compulsory claims
• Permissive claims
• Filing deadlines
• Pleading requirements
• Amendments
• Crossclaims
• Third-party claims
• Jurisdiction
• Jury demands

Some states use different terminology altogether.

For example, California uses the term cross-complaint in its state civil procedure, which differs in important respects from the federal Rule 13 framework.

Therefore, someone researching a counterclaim in a state court should consult the rules of that state and the particular court.

Important Counterclaim Issues Many Readers Miss

Several important counterclaim issues are easy to overlook, particularly the distinction between compulsory and permissive claims, jurisdiction, deadlines, and the effect of dismissal.

1. A Counterclaim Is Not Just a Defense

It seeks affirmative relief.

2. Not Every Counterclaim Is Compulsory

The distinction between compulsory and permissive counterclaims matters.

3. The Same-Transaction Test Matters

A defendant should examine whether the proposed claim arises from the same transaction or occurrence.

4. Federal Jurisdiction Matters

A counterclaim does not automatically give a federal court jurisdiction over every dispute.

5. The Original Plaintiff Cannot Always Make the Counterclaim Disappear

Dismissal of the original claim can interact with the counterclaim and the court’s jurisdiction.

6. Ignoring a Counterclaim Can Have Consequences

A response deadline can apply, and default procedures may become relevant.

7. State Procedure Is Not Identical to Federal Procedure

Readers need to know which jurisdiction’s rules govern their case.

These distinctions make an article considerably more useful than a simple dictionary-style definition.

Frequently Asked Questions About Counterclaims

1. What Is a Counterclaim in Simple Terms?

A counterclaim is a claim against an opposing party in the same lawsuit. Typically, a defendant brings it against the plaintiff to request damages or other relief.

2. What Is an Example of a Counterclaim?

If a customer sues a contractor for defective work, the contractor might bring a counterclaim alleging that the customer failed to pay for completed work.

3. How Is a Counterclaim Different From a Defense?

A defense challenges the other party’s claim. A counterclaim asks the court to award relief against that party.

4. What Is the Difference Between Compulsory and Permissive Counterclaims?

A compulsory counterclaim generally must be raised in the existing case when the applicable rules require it. A permissive counterclaim may be raised but is not required by those rules.

5. What Should a Counterclaim Include?

It generally identifies the parties, supporting facts, legal grounds, jurisdictional basis, and requested relief. The exact requirements depend on the court’s rules.

6. Can a Counterclaim Seek More Money Than the Original Claim?

Yes. In federal court, a counterclaim can request more money than the opposing party seeks or ask for a different type of relief.

7. Is a Counterclaim a Separate Lawsuit?

Generally, no. It is brought within the existing lawsuit, even though it seeks its own relief.

8. Can a Counterclaim Be Dismissed?

Yes. A court may dismiss a counterclaim for reasons such as lack of jurisdiction, insufficient allegations, or other applicable legal grounds.

Final Thoughts

Understanding what is a counterclaim starts with one key distinction. A defense challenges the opposing party’s allegations, while a counterclaim asks the court to grant damages or another remedy against that party within the same lawsuit.

Whether a counterclaim is compulsory or permissive affects how it should be handled. Before filing, check the applicable court rules, deadlines, jurisdiction, and supporting evidence. Legal advice can help clarify these requirements and avoid mistakes that could prevent a claim from being heard.

Mercy

Mercy is a passionate writer at Startup Editor, covering business, entrepreneurship, technology, fashion, and legal insights. She delivers well-researched, engaging content that empowers startups and professionals. With expertise in market trends and legal frameworks, Mercy simplifies complex topics, providing actionable insights and strategies for business growth and success.

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