Compulsory
Mandatory by law or court order; cannot be avoided or opted out of; compulsory counterclaims must be raised in the current action.
While straightforward in theory, many businesses fail to actively track obligations tied to this concept - often resulting in missed deadlines, unintended renewals, penalties, or loss of contractual rights.
US Law · For business owners and foundersWhat is a Compulsory?
Compulsory means mandatory, required by law or court order, and not optional or subject to choice. A compulsory requirement cannot be avoided or opted out of. In litigation, a "compulsory counterclaim" is a defendant's counterclaim that arises from the same transaction or occurrence as the plaintiff's claim. Federal Rule of Civil Procedure 13(a) requires defendants to raise compulsory counterclaims in the current action or they are waived and cannot be brought later.
If you fail to comply with a compulsory requirement or raise a compulsory counterclaim, you lose the right. There is an automatic waiver. The distinction between compulsory (must raise) and permissive (may raise) counterclaims is important in litigation strategy.
In practice, many teams rely on a contract expiry tracking system to stay on top of dates and obligations tied to clauses like this.
Key Elements
Compulsory Counterclaims in Litigation
A counterclaim is compulsory if it: (1) arises out of the same transaction or occurrence as the plaintiff's claim; and (2) does not require adding a new party. If a defendant has a compulsory counterclaim and does not raise it, the claim is waived and cannot be brought in a separate lawsuit later.Waiver by Failure to Raise
If a defendant has a compulsory counterclaim and fails to raise it in the defendant's answer, the claim is waived. Unlike permissive counterclaims, which the defendant has the option to raise, compulsory counterclaims must be raised or they are lost.Same Transaction Test
The key question is whether the counterclaim arises from the same transaction or occurrence as the plaintiff's claim. If the plaintiff sues for breach of a contract and the defendant has a compulsory counterclaim for fraud or misrepresentation in the same contract, the counterclaim must be raised.Permissive Counterclaims
A permissive counterclaim is one that does not arise from the same transaction or does require adding a new party. Permissive counterclaims may be raised but are not required. A defendant can choose to bring a permissive counterclaim in a separate action.Exception: Cannot Require Adding New Party
If raising a counterclaim would require adding a new third party who is not in the suit, the counterclaim becomes permissive rather than compulsory. The defendant can choose whether to raise it or bring it separately.Real-World Example
PlumbCo sues HomeBuild for non-payment of $20,000 for plumbing services. HomeBuild has its own claim against PlumbCo for $10,000, arising from poor workmanship in the same contract. HomeBuild fails to raise this counterclaim in its answer. The lawsuit concludes with judgment for PlumbCo. HomeBuild later files a separate lawsuit for its $10,000 claim.
HomeBuild's counterclaim was compulsory - it arose from the same contract and did not require adding new parties. By failing to raise it in the first lawsuit, HomeBuild waived the claim. The separate lawsuit will be dismissed as barred by waiver. HomeBuild should have raised the counterclaim in its answer to the original suit.
This is why many businesses adopt automated deadline tracking to ensure no critical dates are missed before they pass.
Sample Clause Language
Warning of Compulsory Counterclaim ObligationWatch Out For
Forgetting to raise compulsory counterclaims
If you are defending a lawsuit and you have a counterclaim arising from the same transaction, raise it in your answer or it is waived forever. A missed compulsory counterclaim cannot be brought later as a separate action.Assuming all counterclaims are compulsory
Only counterclaims arising from the same transaction or occurrence are compulsory. If your counterclaim involves different facts or requires adding a new defendant, it is likely permissive. You can choose whether to raise it in the current action or bring it separately.Not analyzing the "same transaction" requirement carefully
Courts vary in how broadly they apply the "same transaction" test. One court might treat a contract dispute and a related indemnification claim as arising from the same transaction (compulsory). Another might treat them separately (permissive). Consult your attorney about your jurisdiction's approach.Don't let compulsory deadlines catch you off guard
Key dates tied to compulsorys - renewal windows, expiry cutoffs, notice periods - can easily slip through the cracks when tracked manually. Missing them triggers automatic extensions, penalties, or lost rights. ExpiryEdge tracks every critical deadline and sends automated reminders before they're due - so nothing slips.
Instead of relying on spreadsheets or manual follow-ups, a centralized renewal reminder system ensures every deadline is visible, tracked, and actioned automatically.
How to Use This in Your Favor
In defending a lawsuit, identify all compulsory counterclaims immediately
When you receive a complaint, immediately review whether you have any counterclaims arising from the same facts. Have your attorney assess which are compulsory (must raise) and which are permissive (optional). Raising compulsory counterclaims in your answer preserves them.Raise compulsory counterclaims in your answer
You must raise compulsory counterclaims in your answer to the complaint (Federal Rule 13(a)). If you discover a compulsory counterclaim after filing your answer, request leave to amend your answer immediately. Do not wait.Use counterclaims strategically
A compulsory counterclaim gives you leverage in settlement negotiations. If you have a substantial counterclaim, the plaintiff cannot simply dismiss the suit to avoid it - you can pursue it. This can incentivize settlement.Related Terms
Frequently Asked Questions
If I miss a compulsory counterclaim, can I bring it later in a separate lawsuit?
No. A missed compulsory counterclaim is waived. You cannot bring it later in a separate action. This is why careful analysis of compulsory counterclaims is critical when defending a lawsuit.
What is the difference between a compulsory and permissive counterclaim?
A compulsory counterclaim arises from the same transaction or occurrence as the plaintiff's claim and must be raised in the defendant's answer. A permissive counterclaim is unrelated (different transaction) and may be raised but is not required. Failure to raise a permissive counterclaim does not waive it.
Can I amend my answer to add a forgotten compulsory counterclaim?
Yes, if you seek leave (permission) from the court to amend. Federal Rule 15 allows amendments, especially early ones and for counterclaims. Courts generally grant leave to amend if it does not prejudice the plaintiff. Request amendment as soon as you realize the oversight.