United States · Tax Court
When must a petitioner move concerning the Commissioner’s Tax Court answer?
Tax Court Rule 37(a) gives the petitioner 30 days from answer service to move with respect to the answer. Filing a reply uses a separate 45-day period. Check the proposed motion and any court direction.
- Period
- 30 calendar days
- Trigger
- Answer-service date
- Rule
- Tax Court Rule 37(a)
Amended through August 2024, current court-linked compilation reviewed
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Which event starts the 30-day period?
Rule 37(a) starts this motion period from service of the Commissioner’s answer. Petition service does not start it.
For an amended answer or amendments, like periods run from service unless the court otherwise directs.
Check Rule 25(b)(2) when a jurisdiction or pleading-sufficiency motion or court-directed amended paper changes the responsive-pleading trigger. Do not infer a resulting reply date from this motion calculator.
Tax Court Rule 37How are the 30 Tax Court calendar days counted?
- Establish effective service of the Commissioner’s answer or amended answer.
- Exclude the established trigger day.
- Count 30 calendar days.
- If the final day is a Saturday, Sunday or Tax Court legal holiday, continue to the next day that is not. Rule 25(a)(5) includes DC Emancipation Day, April 16, and additional presidential, congressional or DC holidays. Check actual clerk inaccessibility separately.
Exclude the established trigger day. Count every following calendar day, including intermediate Saturdays, Sundays and legal holidays, under Tax Court Rule 25(a)(1).
Use the 30-day motion period. The longer 45-day reply period does not enlarge the time to move with respect to the answer.
Tax Court Rule 25(a)(1)–(3)What does a worked calculation look like?
Fictitious example
Fictitious answer effectively served August 3, 2026. The petitioner’s ordinary 30-day motion period applies. Exclude August 3. August 4–31 supplies 28 days. September 1 and 2 supply the remaining two.
| Step | What is counted | Date |
|---|---|---|
| Trigger | Answer-service date | August 3, 2026 |
| Count | 30 calendar days after the trigger | September 2, 2026 |
Fictitious facts. No different court order, additional declared holiday or actual clerk inaccessibility is assumed.
Try these dates in the calculatorWhich qualifications and separate procedures should I check?
- Motion about jurisdiction or pleading sufficiency
- Rule 25(b)(2)(A) starts the responsive-pleading period from service of the court’s order disposing of that motion, unless the court orders otherwise. The calculator does not infer the motion or identify that order.
- Court-directed amended paper
- Under Rule 25(b)(2)(B), when the court directs an amendment, supplement or ratification, the responsive-pleading period starts from service of that paper unless the court orders otherwise. Confirm the actual paper and order.
- Different proceeding or motion
- Rule 37(e) identifies specialized reply requirements. The proposed motion’s governing provision, grounds and court directions must be checked separately from this ordinary date.
- This page does not decide whether the answer is sufficient or which motion is available.
- A motion’s effect on a reply period requires the governing rule and actual court action.
What should I check before filing?
Common questions
The procedure and trigger
Does the petitioner have 45 days to make this motion?
No. Rule 37(a) assigns 30 days to moving with respect to the answer and 45 days to filing a reply. These are separate acts.
Tax Court Rule 37Do I use the mailing date or the date the served paper arrived?
Rule 21(b)(2)(B) makes mailed service complete when mailed and uses mailing as the service date. Rule 25 contains no automatic FRCP three-day service addition. Establish the actual mailing event and applicable court order.
Tax Court Rule 21(b)(2)(B) and (5)When is electronic service complete?
Rule 21(b)(2)(A) makes qualifying electronic service complete on filing or sending. It is ineffective if the serving party learns that it did not reach the recipient. Establish actual effective service rather than assuming every notification proves it.
Tax Court Rule 21(b)Tax Court counting and filing
Does April 16 count as a Tax Court legal holiday?
Yes. Rule 25(a)(5)(C) includes DC Emancipation Day, April 16. If it is the final day, move to the next day that is not a weekend or legal holiday. Intermediate holidays still count. The court can be open on a computation holiday.
Tax Court Rule 25(a)(4), (5), (b) and (c)Does electronic filing use midnight in my own time zone?
No. Rule 22(d) and Rule 25(a)(3)(A) use 11:59 p.m. Eastern, subject to a different statutory or court-ordered time. Check DAWSON filing instructions. The calculator supplies a date, not proof of completed filing.
Tax Court Rule 22Does putting the paper in the mail prove timely filing?
No. Rule 22(a) ordinarily requires paper filing with the Washington, DC clerk during business hours. Rule 22(b) permits specified alternative filing procedures. Rule 22(c) refers timely mailing to Code section 7502. This page does not determine compliance with that statute.
Tax Court Rule 22What if the clerk is inaccessible on this filing date?
Unless the court orders otherwise, Rule 25(a)(2) extends a nonpetition filing deadline to the first accessible day that is not a weekend or legal holiday. Check actual court notices. The calculator does not infer a DAWSON outage or clerk closure. Petition filing has a separate statutory provision.
Tax Court Rule 25(a)(1)–(3)Can a court order change this ordinary rule-based period?
Check the actual order. Rule 25(b)(1) permits good-cause extension before expiry and, on motion, excusable-neglect relief after expiry unless a statute precludes it. Rule 25(c) permits shortening. A request or calculation does not establish that relief was granted.
Tax Court Rule 25(a)(4), (5), (b) and (c)Official sources and review
Provisions used (7)
| Provision | Purpose |
|---|---|
| Tax Court Rule 37 | Procedure-specific actor, trigger, period and qualifications |
| Tax Court Rule 21(b) | Actual service event and separate service requirements |
| Tax Court Rule 21(b)(2)(B) and (5) | Actual service event and separate service requirements |
| Tax Court Rule 22 | Electronic and paper filing boundaries |
| Tax Court Rule 25(a)(1)–(3) | Computation, holidays, inaccessibility and court orders |
| Tax Court Rule 25(a)(4), (5), (b) and (c) | Computation, holidays, inaccessibility and court orders |
| Tax Court Rules 25(c) and 26 | Electronic filing and shortening orders |