Northern Ireland civil procedure
When must a plaintiff answer a Northern Ireland counterclaim?
21 days after counterclaim service. Serve a defence to the counterclaim. A defence to counterclaim is distinct from an optional reply. The required service and any combined document must be established. Order 3 rule 3 applies to pleading service.
- Period
- 21 days after counterclaim service
- Trigger
- Actual service of the counterclaim on the plaintiff
- Rule
- Rules of the Court of Judicature (NI) 1980, Sch 1, Order 18, rule 3(4)
Current official revised XML accessed October 9, 2026, with retained amendment comparison. The June 2021 and February 2021 court PDFs are historical consolidation aids.
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When must a plaintiff answer a Northern Ireland counterclaim?
21 days after counterclaim service. Serve a defence to the counterclaim. A defence to counterclaim is distinct from an optional reply. The required service and any combined document must be established. Order 3 rule 3 applies to pleading service.
Responsible actor. The plaintiff answering the counterclaim.
Actual service of the counterclaim on the plaintiff.
A defence to counterclaim is distinct from an optional reply. The required service and any combined document must be established. Order 3 rule 3 applies to pleading service.
A defence to counterclaim is distinct from an optional reply. The required service and any combined document must be established. Order 3 rule 3 applies to pleading service. The result must identify pleading service for the plaintiff answering the counterclaim. Confirm every actual event and completion before selecting the ordinary branch.
Rules of the Court of Judicature (NI) 1980, Sch 1, Order 18, rule 3(4)How does this provision count time?
- Establish actual service of the counterclaim on the plaintiff.
- Serve a defence to the counterclaim.
- 21 days after counterclaim service. Exclude the controlling event day under Order 3 rule 2(2). Count 21 following days. Intermediate weekends remain because this interval exceeds seven days. Order 3 rule 3 excludes the Long Vacation only in this actual pleading-service branch unless the court directs otherwise.
- Serve a defence to the counterclaim. The 2026 Long Vacation runs July 1 through September 4 for the Order 3 rule 3 pleading exclusion. That pause does not establish a registry opening or extend a different service duty.
21 days after counterclaim service. Exclude the controlling event day under Order 3 rule 2(2). Count 21 following days. Intermediate weekends remain because this interval exceeds seven days. Order 3 rule 3 excludes the Long Vacation only in this actual pleading-service branch unless the court directs otherwise.
Serve a defence to the counterclaim. The 2026 Long Vacation runs July 1 through September 4 for the Order 3 rule 3 pleading exclusion. That pause does not establish a registry opening or extend a different service duty.
Rules of the Court of Judicature (NI) 1980, Sch 1, Order 18, rule 3(4)What do independently checked examples show?
Fictitious example
Fictitious established event on Tuesday, January 13, 2026. 21 days after counterclaim service. A defence to counterclaim is distinct from an optional reply. The required service and any combined document must be established. Order 3 rule 3 applies to pleading service.
| Step | What is counted | Date |
|---|---|---|
| Example 1. Ordinary established facts | Fictitious established event on Tuesday, January 13, 2026. 21 days after counterclaim service. A defence to counterclaim is distinct from an optional reply. The required service and any combined document must be established. Order 3 rule 3 applies to pleading service. 21 days after counterclaim service. Exclude the controlling event day under Order 3 rule 2(2). Count 21 following days. Intermediate weekends remain because this interval exceeds seven days. Order 3 rule 3 excludes the Long Vacation only in this actual pleading-service branch unless the court directs otherwise. The independent ordinary endpoint is Tuesday, February 3, 2026 for pleading-service, not a different filing, service or entitlement date. | Tuesday, February 3, 2026 |
| Example 2. Closed-day boundary | Fictitious boundary event on Friday, March 13, 2026. The source-specific completion is serve a defence to the counterclaim. Serve a defence to the counterclaim. The 2026 Long Vacation runs July 1 through September 4 for the Order 3 rule 3 pleading exclusion. That pause does not establish a registry opening or extend a different service duty. | The ordinary pleading-service endpoint is Good Friday, April 3, 2026. RCJ Office closure cannot postpone this actual act merely because it prevents a different registry filing. Establish lawful completion on the controlling day or an actual variation. |
| Example 3. Material procedural branch | Actual service of the counterclaim on the plaintiff is not established. A defence to counterclaim is distinct from an optional reply. The required service and any combined document must be established. Order 3 rule 3 applies to pleading service. The selected period cannot replace that missing source fact. A defence to counterclaim is distinct from an optional reply. The required service and any combined document must be established. Order 3 rule 3 applies to pleading service. | Actual service of the counterclaim on the plaintiff is not established. A defence to counterclaim is distinct from an optional reply. The required service and any combined document must be established. Order 3 rule 3 applies to pleading service. The selected period cannot replace that missing source fact. |
Fictitious established facts. These examples do not establish eligibility, effective service, relief or a direction.
Try these dates in the calculatorWhich conditions and exceptions apply?
- Applicable event and branch
- A defence to counterclaim is distinct from an optional reply. The required service and any combined document must be established. Order 3 rule 3 applies to pleading service.
- Counting and boundary
- 21 days after counterclaim service. Exclude the controlling event day under Order 3 rule 2(2). Count 21 following days. Intermediate weekends remain because this interval exceeds seven days. Order 3 rule 3 excludes the Long Vacation only in this actual pleading-service branch unless the court directs otherwise.
- Required completion
- Serve a defence to the counterclaim. The 2026 Long Vacation runs July 1 through September 4 for the Order 3 rule 3 pleading exclusion. That pause does not establish a registry opening or extend a different service duty.
- A defence to counterclaim is distinct from an optional reply. The required service and any combined document must be established. Order 3 rule 3 applies to pleading service. The result must identify pleading service for the plaintiff answering the counterclaim. Confirm every actual event and completion before selecting the ordinary branch.
- This procedure concerns the plaintiff answering the counterclaim. Its controlling event is actual service of the counterclaim on the plaintiff. A defence to counterclaim is distinct from an optional reply. The required service and any combined document must be established. Order 3 rule 3 applies to pleading service.
What must the responsible actor complete?
Questions about this procedure
When must a plaintiff answer a Northern Ireland counterclaim?
Is answering a counterclaim optional like a reply?
No. The defence-to-counterclaim step is distinct from an optional reply to the defendant's defence.
Rules of the Court of Judicature (NI) 1980, Sch 1, Order 18, rule 3(4)Must the counterclaim's service be established?
Yes. The defendant's appearance or the plaintiff's original claim does not replace service of the counterclaim.
Rules of the Court of Judicature (NI) 1980, Sch 1, Order 18, rule 3(4)Can one pleading combine the reply and counterclaim defence?
The applicable pleading provisions permit the required combined form. The distinct obligations still need to be satisfied.
Rules of the Court of Judicature (NI) 1980, Sch 1, Order 18, rule 3(4)Can vacation or directions change the ordinary answer date?
The pleading-specific Long Vacation provision and actual court directions must be applied to the established counterclaim branch.
Rules of the Court of Judicature (NI) 1980, Sch 1, Order 18, rule 3(4)Does the defendant's original appearance start the counterclaim-answer period?
No. The plaintiff's answer uses actual service of the counterclaim.
Rules of the Court of Judicature (NI) 1980, Sch 1, Order 18, rule 3(4)What does a combined reply document need to contain?
It must include the required defence to counterclaim as well as any reply. A document labelled reply alone may not answer the counterclaim.
Rules of the Court of Judicature (NI) 1980, Sch 1, Order 18, rule 3(4)Official sources and review
Provisions used (3)
| Provision | Purpose |
|---|---|
| Rules of the Court of Judicature (NI) 1980, Sch 1, Order 18, rule 3(4) | Check the identified procedure, event, counting rule or qualification |
| Rules of the Court of Judicature (Northern Ireland) 1980, Order 3 | Check the identified procedure, event, counting rule or qualification |
| Rules of the Court of Judicature (Northern Ireland) 1980, Order 64 rule 7 | Check the identified procedure, event, counting rule or qualification |