How to Draft a Counterclaim
A practical walkthrough for identifying, pleading, and filing a counterclaim after you have been sued.
Being served with a complaint is not the end of your options. If the plaintiff's own conduct gives rise to a legal claim against them, you may be able to file a counterclaim inside the same lawsuit instead of starting a separate case. A well-drafted counterclaim can offset the plaintiff's damages, create settlement leverage, or reframe the entire dispute around facts the plaintiff would rather ignore.
But a counterclaim is not automatic and not always optional. Some claims are 'compulsory' — arising from the same transaction or occurrence as the plaintiff's claim — and can be permanently lost if you fail to raise them now. Others are 'permissive' and can be brought later, or in a separate action, without penalty. This guide walks through how to tell the two apart, how to build the pleading itself, and where drafters most often go wrong.
Compulsory vs. Permissive: Know Which Kind You Have
Most civil procedure rules distinguish a compulsory counterclaim — one arising out of the same transaction or occurrence as the plaintiff's claim — from a permissive counterclaim, which arises from an unrelated set of facts. The distinction matters because a compulsory counterclaim not raised in the current lawsuit is typically barred forever under claim-preclusion principles; a permissive counterclaim can usually be filed as its own lawsuit later.
Courts generally look at whether the claims share the same evidence, the same witnesses, and the same core factual dispute. When in doubt, treat a claim as compulsory and raise it now — the cost of over-including is far lower than the cost of losing the claim entirely.
Identifying Available Counterclaims
Read the complaint line by line and ask what the plaintiff did, not just what they are alleging you did. Breach of the same contract, misrepresentations made during formation, failure to perform conditions precedent, or conduct that independently damaged you are all common sources of counterclaims.
- Contract disputes: the other party's own breach, failure of consideration, or fraud in the inducement
- Business disputes: tortious interference, unfair competition, or breach of fiduciary duty by the plaintiff
- Debt and collection cases: usury, billing errors, or violations of consumer-protection statutes
- Employment cases: the employer's own statutory violations or unpaid obligations to the employee
Structuring the Counterclaim Pleading
A counterclaim is drafted like a mirror-image complaint: it needs its own caption identifying the party as counterclaim-plaintiff, its own numbered factual allegations, separate counts for each legal theory, and its own prayer for relief. It is typically filed as part of, or attached to, the answer.
- State the basis for jurisdiction and venue over the counterclaim if it is not automatically part of the existing case
- Plead each element of each claim — do not assume the court will infer them from the answer's denials
- Separate each legal theory into its own numbered count
- Include a specific demand for relief: damages, an accounting, injunctive relief, or attorney's fees where authorized
- Attach or reference any documents the claim depends on, consistent with your jurisdiction's pleading rules
Common Drafting Mistakes
Counterclaims fail more often from carelessness than from weak facts. Watch for these recurring problems.
- Treating the counterclaim as an afterthought tacked onto denials, rather than a stand-alone pleading with its own elements
- Missing the deadline to raise a compulsory counterclaim and losing it permanently
- Failing to plead damages with enough specificity to survive a motion to dismiss
- Ignoring statute-of-limitations issues that apply independently to the counterclaim
- Ignoring conflict-of-interest or fee-agreement scope questions when the same counsel represents the client on both offense and defense
Filing and Procedural Requirements
Filing deadlines, required formatting, and whether a counterclaim needs a separate filing fee vary by court and by whether the claim is compulsory or permissive. Confirm local rules on timing relative to the answer, service requirements on any newly added parties, and whether a reply to the counterclaim is required from the original plaintiff.
Once filed, the counterclaim becomes an independent piece of the case for discovery and motion practice purposes — expect the plaintiff to answer it, potentially move to dismiss it, and factor it into settlement discussions going forward.
- What happens if I miss the deadline to file a compulsory counterclaim?
- In most jurisdictions a compulsory counterclaim not raised in the pending lawsuit is barred from being brought later, under claim-preclusion doctrine. Courts sometimes allow late amendment for good cause, but this is discretionary and should not be relied upon.
- Can I file a counterclaim even if I'm also disputing liability in my answer?
- Yes. Denying the plaintiff's allegations in your answer and asserting your own claim against them are not inconsistent positions — courts routinely handle both within the same case.
- Does filing a counterclaim change who has the burden of proof?
- Only as to the counterclaim itself. You retain the burden of proving each element of your own claim, while the original plaintiff retains the burden of proving their claim against you — the two burdens run separately.
This page is an educational explainer, not legal advice, and creates no attorney–client relationship. Juricratic is a simulation engine: every probability-like figure is a dial you set, not a calibrated prediction. Verify every rule, deadline, and figure against the authorities and orders that govern your matter.
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