Nothing here is legal advice. This explains how the counting rules work so you can check your own math, and every date should be confirmed against the rule, your court's local rules, and any scheduling order before you rely on it.
Count it instead of reading it
Enter the date of service and get the answer date with the rule that produced it, plus justice court and summary judgment dates.
Texas is unusual. Almost every other state gives a defendant a fixed number of days: twenty-one in federal court under FRCP 12(a), thirty in California. Texas instead pins the deadline to a day of the week. The practical effect is that two defendants served twenty-four hours apart can have answer dates a full week apart, and a plaintiff who takes a default judgment based on a simple twenty day count may find that judgment set aside on appeal.
How many days do you have to answer a lawsuit in Texas?
Between twenty-one and twenty-nine days, depending on when you were served. Rule 99(c) prints the operative language on the face of every citation: file a written answer "by 10:00 a.m. on the Monday next following the expiration of twenty days after you were served this citation and petition." The twenty days is only the first half of the calculation. The Monday is the deadline.
The shortest possible period is twenty-one days, which happens when service lands on a Monday and no legal holiday interferes. The longest runs to twenty-nine. Anyone who writes "answer due in 20 days" on a file jacket has recorded a date that cannot be correct.
How to calculate the Texas answer deadline step by step
Four steps, in this order. Skipping the third one is the classic error.
- Drop the day of service. Rule 4 says the day of the act or event that starts a period is not counted. Served on a Wednesday means the count starts Thursday.
- Count twenty calendar days. Twenty is longer than five, so every day counts, weekends and holidays included. Mark day twenty.
- Move to the next Monday after day twenty. Not the Monday day twenty falls on. The first Monday that comes after it.
- Roll a holiday Monday forward. If that Monday is one of the fifteen Texas legal holidays, Rule 4 pushes the deadline to the next day that is not a Saturday, Sunday or legal holiday.
Five of the Texas legal holidays always fall on a Monday: Martin Luther King, Jr., Day, Presidents' Day, Memorial Day, Labor Day, and Confederate Heroes Day whenever January 19 happens to be one. Step four fires more often than people expect.
What happens if the 20th day falls on a Monday?
You get the following Monday, a full week later. The rule sets the deadline at the Monday next after the twenty day period expires, and that period does not expire until the end of the twentieth day. If day twenty is a Monday, the period is still running that morning, so the Monday "next after" it is seven days out. A defendant in that position gets twenty-seven days rather than twenty.
This is where premature defaults come from. A plaintiff's paralegal counts twenty days, sees a Monday, and calendars it. The defendant, correctly, files a week later. The default taken in between is vulnerable.
Worked examples on a real calendar
Every date below was computed under the rules above and independently double checked. Notice the second and third rows in particular.
| Served | Day 20 | Answer due | Days |
|---|---|---|---|
| Wed, Aug 5, 2026 | Tue, Aug 25 | Mon, Aug 31, 2026 | 26 |
| Mon, Aug 10, 2026 | Sun, Aug 30 | Mon, Aug 31, 2026 | 21 |
| Tue, Aug 11, 2026 | Mon, Aug 31 | Tue, Sep 8, 2026 | 28 |
| Thu, Nov 5, 2026 | Wed, Nov 25 | Mon, Nov 30, 2026 | 25 |
| Tue, Dec 22, 2026 | Mon, Jan 11, 2027 | Wed, Jan 20, 2027 | 29 |
Rows two and three are one day apart at service and eight days apart at the deadline. Service on Monday, August 10 puts day twenty on a Sunday, so the very next day is the answer Monday, producing the shortest period the rule allows. Service on Tuesday, August 11 puts day twenty on a Monday, which pushes the deadline to Monday, September 7. That is Labor Day, so it rolls again to Tuesday, September 8.
The last row shows the outer limit. A defendant served on Tuesday, December 22, 2026 reaches day twenty on Monday, January 11, 2027, so the answer Monday is January 18. That is Martin Luther King, Jr., Day, and January 19 is Confederate Heroes Day, so two consecutive legal holidays carry the deadline all the way to Wednesday, January 20.
Do you get extra days if you were served by mail?
No, not for the citation. Rule 21a(c) adds three days when a paper is served by mail, but Rule 21a(a) expressly excludes "the citation to be served upon the filing of a cause of action" from the rule entirely. Certified mail service of the original petition buys the defendant nothing extra. The Monday rule is already the cushion.
The three day extension does matter later in the case, for discovery responses and other papers that run from service. When it applies, Rule 4 tells you to count weekends and holidays inside those three days, which is the opposite of how Texas treats short periods generally. Electronic service through the electronic filing manager adds nothing at all, which surprises lawyers who came from California practice, where e-service adds two court days.
How long do you have to answer in justice court?
Fourteen days, with no Monday rule at all. Rule 502.5(d) gives a justice court defendant until the end of the fourteenth day after the day of service. If that day is a Saturday, Sunday or legal holiday, the answer is due the next day that is not, and if the court closes before 5:00 p.m. on the due date, it moves to the next business day.
Justice courts also count time differently. Rule 500.5 tells you to count every day including weekends and holidays, with no carve out for short periods, and it adds that court closure extension the district court rule does not have. An eviction or debt claim docket genuinely runs on a different clock than the district court in the same county, so do not carry habits from one to the other. A defendant served by publication gets forty-two days from the date the citation issued under Rule 502.5(e).
What happens if you miss the Texas answer deadline?
The plaintiff can move for a default judgment, but only once the deadline has genuinely passed. Filing an answer at any point before the default judgment is signed cuts it off, because Rule 121 makes an answer an appearance. Late is far better than never.
If a default has already been signed, the long standing Texas standard for setting it aside comes from Craddock v. Sunshine Bus Lines, decided in 1939 and still applied today. A defendant must show that the failure to answer was not intentional or the result of conscious indifference but due to accident or mistake, must set up a meritorious defense, and must show that a new trial will not injure the plaintiff. How courts have applied each of those elements varies quite a bit by fact pattern, so it is worth reading how the courts have actually applied the standard before deciding whether a motion is worth filing. Where service itself was defective, the grounds are stronger and different rules apply.
Why this deadline gets miscalculated so often
Three reasons, and none of them are carelessness exactly. The first is that "twenty days" is the memorable part of the rule and the Monday is not, so the number sticks and the mechanism does not. The second is that most calendaring software asks for a number of days and an event, which is a shape the Texas answer rule does not fit. The third is that the definition of a legal holiday in Texas is genuinely non obvious.
On that last point: Rule 4 uses the phrase "legal holiday" without defining it, and the definition lives in Government Code section 662.021. It counts the nine national holidays in section 662.003(a) plus only the first six state holidays in section 662.003(b). December 24 and December 26 are state holidays, so state offices close, but they are not legal holidays and they do not extend a Rule 4 deadline. Meanwhile San Jacinto Day, Texas Independence Day and Lyndon Baines Johnson Day are legal holidays that no out of state calendar knows about.
Rule 4 also has a gap worth knowing about. It extends a deadline only for a Saturday, Sunday or legal holiday. Unlike the justice court rule, and unlike Rule 4.1(a) of the appellate rules, it says nothing about a clerk's office that happens to be closed. County clerks do close for weather and for local reasons. If your last day lands on one of those, the rule does not move it for you, and filing early is a great deal cheaper than briefing the question later.
The short version
Count twenty days from the day after service, go to the next Monday after that, and push forward if it is a holiday. File by 10:00 a.m. Do not add days for the method of service, do not assume twenty days, and do not carry the rule into justice court. If you want the arithmetic done for you, the Texas court deadline calculator applies Rule 99(b), Rule 4 and the Texas legal holidays and tells you which one produced the date. For a matter in federal court, the federal court date calculator handles FRCP 6(a) counting, and California motion practice runs on court days counted backward from the hearing instead.
One answer date is a two minute job. A docket of them, each with dependent discovery, expert and dispositive motion dates hanging off it, is a systems problem, which is what legal calendaring and docketing software exists to solve.