United States · Federal civil procedure

When must a defendant answer a federal civil complaint?

An ordinary defendant must serve an answer within 21 days after service of the summons and complaint. A timely Rule 4(d) waiver generally gives 60 days from sending the request, or 90 days when sent outside any US judicial district.

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Period: 21 days after service, or 60/90 days after a qualifying waiver request
Trigger: Summons and complaint service, or sending a qualifying waiver request
Rule: FRCP 12(a)(1)(A); FRCP 4(d)(3)

Federal Rules of Civil Procedure

December 1, 2025 compilation

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Which procedural branch applies?

This branch starts from Service of the summons and complaint on the defendant.

Date the summons and complaint were served

For the ordinary 21-day branch, enter actual service. A waiver branch instead uses the date the request was sent.

Entry rules and timing exceptions

21 days from Service of the summons and complaint on the defendant

FRCP 12(a)(1)(A)(i)Binding

Rule notes

Opening words of Rule 12(a) are 'Unless another time is specified by this rule or a federal statute', so a specific federal statute displaces the 21 days. FRCP 6(d) can NEVER add 3 days to this period. Failure to answer exposes the defendant to entry of default under Rule 55(a). Corrected on verification: the entry previously said that Rule 6(d) adds 3 days 'only where service was by mail, by leaving with the clerk, or by other consented means', which invites the reading that a mailed complaint attracts the extra 3 days. It does not. FRCP 6(d) is keyed exclusively to service made under FRCP 5(b)(2)(C), (D) or (F); the summons and complaint are served under FRCP 4, so no 3 days are ever added to the Rule 12(a)(1)(A)(i) period however service was effected. The quoted opening words of Rule 12(a) were also incomplete: the rule reads 'Unless another time is specified by this rule or a federal statute'. Sources: FRCP 6(d) and FRCP 12(a)(1), current text.

Calculation software, not legal advice. Check the current rule, orders and facts.

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Which date starts this period?

For the 21-day branch, confirm when the defendant was served with both the summons and complaint under Rule 4. Filing the complaint does not start this answer period.

For a timely waiver returned before service, start from sending the waiver request. Signing, returning and filing the waiver do not replace that sending date.

The waiver branch is 90 days when the request was sent to a defendant outside any US judicial district. Otherwise the timely-waiver branch is 60 days.

FRCP 12(a)(1)(A); FRCP 4(d)(3)

How is the 21-day period counted?

For the ordinary 21-day branch, enter actual service. A waiver branch instead uses the date the request was sent.
Exclude that day.
Count 21 calendar days.
A final Saturday, Sunday or legal holiday carries the period to the next day that is not. Check additional state holidays and clerk inaccessibility.

Choose the procedural branch before counting. Exclude its operative day, then count 21, 60 or 90 calendar days. Rule 6(d) does not add three days to the Rule 4 complaint-service period.

FRCP 6(a)(1)

What does a worked calculation look like?

Fictitious example

The summons and complaint were validly served August 3. No waiver, special statute or motion changes the period. Exclude August 3. August 4–24 supplies 21 days. August 24 is Monday.

Example counting steps
Step	What is counted	Date
Trigger	Summons and complaint service, or sending a qualifying waiver request	August 3, 2026
Count	21 calendar days after the trigger	August 24, 2026

Example resultMonday, August 24, 2026

Fictitious dates. No additional state holiday, closure or different case order is assumed.

Try these dates in the calculator

Can an exception or order change the deadline?

Federal statute or government defendant: Rule 12(a) yields to a different federal statutory time. Rule 12(a)(2) and (3) separately address the United States and specified officers or employees.
Rule 12 motion: Unless the court sets another time, Rule 12(a)(4) changes the responsive-pleading period after a Rule 12 motion. Denial or postponement and a more definite statement use distinct 14-day triggers.
Untimely or missing waiver: The 60/90-day options require a timely Rule 4(d) waiver. Sending a request alone does not establish that the defendant qualifies.
Extension: Rule 6(b)(1) permits a court extension for good cause before expiry, or on motion based on excusable neglect after expiry. This calculator does not grant that relief.

FRCP 12(a)(1)(A); FRCP 4(d)(3)

This page does not determine service validity, treat a waiver request as an accepted waiver, calculate a government-defendant period or infer a motion disposition.

What should I check before acting?

Identify the defendant and any special federal statutory response period.
Confirm service of the summons and complaint, or a timely returned waiver.
For a waiver, preserve the sending date and where the defendant was located.
Check any Rule 12 motion, notice of court action and replacement court order.
Prepare the answer and required defenses under Rules 8 and 12.
Check both service and filing requirements.
Rule 12(a) specifies when the answer must be served. Also check Rule 5(d) filing requirements. A court filing ordinarily ends at midnight electronically in the court time zone, or scheduled clerk closing otherwise, unless another cutoff applies.

Common questions

The procedure and starting event

Does filing the complaint start the ordinary answer period?

No. Rule 12(a)(1)(A)(i) uses service of the summons and complaint on the defendant. The plaintiff’s service deadline uses a different trigger.

FRCP 12(a)(1)(A)(i)

Do I count 60 days from returning the waiver?

No. A qualifying waiver uses the date the request was sent. Rule 4(d)(3) and Rule 12(a)(1)(A)(ii) identify that sending event.

FRCP 4(d)(3)

When does the 90-day waiver branch apply?

It applies when the waiver request was sent to the defendant outside any US judicial district and the defendant timely waived service under Rule 4(d).

FRCP 12(a)(1)(A)(ii)

Exceptions and completion

Do mailed complaint papers add three days to the 21-day answer period?

No. Rule 6(d) identifies specified Rule 5 service methods. The summons and complaint are served under Rule 4, so that addition does not apply to this ordinary answer period.

FRCP 6(d) and Rule 4

What if the court denies a Rule 12 motion?

Unless the court sets a different time, Rule 12(a)(4)(A) requires the responsive pleading within 14 days after notice of the court’s action. This is a different trigger from original complaint service.

FRCP 12(a)(4)

Can a government defendant use the ordinary 21-day branch?

Check Rule 12(a)(2) and (3). They provide separate 60-day periods and government-service triggers. This page’s waiver options do not substitute for those provisions.

FRCP 12(a)(2) and (3)

Does the rule only require filing an answer?

Rule 12(a) specifies service of the answer. Rule 5 governs separate service and filing requirements. Completing one does not establish that every requirement has been satisfied.

FRCP 12(a) and Rule 5

Do intermediate weekends count?

Rule 6(a)(1)(B) counts all intermediate days, including Saturdays, Sundays and legal holidays. Its final-day rollover is separate.

FRCP 6(a)(1)

What if the clerk’s office is inaccessible on a filing deadline?

Unless the court orders otherwise, Rule 6(a)(3)(A) extends a filing deadline to the first accessible day that is not a Saturday, Sunday or legal holiday.

FRCP 6(a)(1), (3), (4) and (6)

Official sources and review

Provisions used (8)

Provisions used in this guide
Provision	Purpose
Rule 12(a)(1)	Ordinary complaint response and timely-waiver branches
Rule 12(a)(2)–(4)	Government defendants and effects of a Rule 12 motion
Rule 4(d)(1)	Waiver request requirements
Rule 4(d)(3)	Time to answer after a timely waiver
Rule 6(d)	Addition limited to specified Rule 5 service methods
Rule 5(d)	Separate filing requirements
FRCP 6(a)(1)	Trigger-day exclusion and intermediate calendar days
FRCP 6(a)(1), (3), (4) and (6)	Final-day rollover, holidays, clerk inaccessibility and filing cutoff

Read the official Civil Rules compilation

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