If you were just served with a summons and complaint in California, your summons already told you the most important number in the case: 30 days. That is how long you have to file a written response with the court. Not 30 business days. Thirty calendar days, counted from the day you were served. Miss it, and the plaintiff can ask the court to decide the case without you.
Thank you for reading this post, don't forget to subscribe!This guide explains the rule behind that number, when the clock really starts (it does not always start on the day the papers reach your hands), what counts as a valid response, and the two common case types where the deadline is much shorter.
The rule: 30 days after service, in writing
California Code of Civil Procedure section 412.20 requires every summons to tell the defendant, in plain language, to “file with the court a written pleading in response to the complaint within 30 days after summons is served.” It is not a suggestion and it is not a courtesy period. The summons also warns that if you do not respond in time, the plaintiff can have your default entered and go after the relief demanded in the complaint — garnishment, property seizure, the rest.
The 30 days are calendar days, not court days. Weekends and holidays count toward the total. The only adjustment the counting rules give you: under CCP section 12, you exclude the day you were served (that day is day zero), and under CCP section 12a, if day 30 lands on a Saturday, Sunday, or court holiday, the deadline rolls forward to the next day the court is open.
When the 30-day clock actually starts
This is where people get tripped up, because the clock starts when service is legally complete, not necessarily when the papers touched your hands.
Personal service (CCP 415.10). The process server hands you the papers. Service is complete at that moment. Day zero is today; your answer is due 30 calendar days later, adjusted if that date is a weekend or holiday.
Substituted service (CCP 415.20). When personal service fails after reasonable diligence, papers may be left with a competent adult at your home or workplace and mailed to you afterward. This is the trap: service is not complete on the day the papers were left. It is deemed complete on the 10th day after the mailing. Your 30-day clock starts only then. If you count from the visit instead of the mailing, you will calculate a deadline that is 10 days too early — an easy way to file late, or, from the plaintiff’s side, to take a default that gets set aside later.
Service by acknowledgment (CCP 415.30). If you received the papers by mail with an acknowledgment form and you sign and return it, service is deemed complete on the date you sign — the date you write next to your signature, so date it accurately.
A worked example
Say you are personally served with a summons and complaint on Friday, October 16, 2026. Day zero is October 16. Day 1 is October 17. Counting forward 30 calendar days lands on Sunday, November 15, 2026. Because that is a Sunday, CCP section 12a pushes the deadline to the next court day: Monday, November 16, 2026. Your answer must be filed and served by then.
Now suppose the same papers were served by substituted service, with the mailing sent on October 16. Service is deemed complete 10 days later, on October 26. Day zero is October 26, day 30 is November 24, 2026 (a Tuesday), and that is your deadline. Same lawsuit, same defendant — a ten-day difference entirely from the method of service. This is why the proof of service in the court file matters: it tells you which method was used and when the clock truly began.
What counts as a response
You do not have to file a full answer to beat the deadline, but you must file something recognized as a response within the 30 days. Your options:
- An answer. The standard response: you admit, deny, and raise defenses to each allegation. Self-represented defendants commonly use Judicial Council forms such as PLD-C-010 (Answer—Contract) or PLD-050 (General Denial).
- A demurrer (CCP 430.40). If you believe the complaint fails to state a valid claim, you can demur within the same 30-day window instead of answering. California also requires you to meet and confer with the other side before filing (CCP 430.41); if you tried and could not, Judicial Council form CIV-141 gives you an automatic 30-day extension of your time to respond.
- A motion to quash service (CCP 418.10). If service was defective or the court lacks jurisdiction over you, this motion must be filed on or before your last day to plead. It extends your deadline while the motion is pending.
- A motion to strike (CCP 435). A way to challenge improper allegations, filed in the same window.
If you file a demurrer or motion to quash, the 30-day answer clock pauses while that challenge is resolved. But do not assume the time is open-ended — get a court order or a written stipulation if you need more room, and file everything before the original deadline if you are unsure.
Not every California case gives you 30 days
Two common exceptions are worth knowing, because the shorter deadlines surprise people:
Unlawful detainer (eviction) cases give the tenant just 10 court days after service to respond (CCP 1167) — court days meaning weekends and holidays are excluded from the count. If you received eviction papers, treat the deadline as urgent, not as a month-long window.
Small claims cases do not require a written answer at all (CCP 116.310). You show up at the hearing and present your defense in person. Family law cases, by contrast, mirror the civil rule: a response to a divorce petition is due 30 days after service (Family Code section 2020).
What happens if you miss the deadline
Once the 30 days run out, the plaintiff does not have to warn you again. Under California Rules of Court, rule 3.110(g), the plaintiff is required to seek entry of your default within 10 days after your response was due, using Judicial Council form CIV-100 (Request for Entry of Default). After default is entered, the plaintiff can pursue a default judgment under CCP section 585 — a judgment in their favor without a trial on the merits.
A default is not always the end. California gives defendants second chances, but they are narrow and time-sensitive. CCP section 473 allows relief from a default for mistake, inadvertence, surprise, or excusable neglect, and it even mandates relief when the default resulted from an attorney’s mistake — but you must move within a reasonable time and no more than six months after the judgment. CCP section 473.5 separately provides relief when service never actually reached you. Our guide on what happens after a missed court deadline walks through those options in detail.
The honest advice: never count on being rescued by section 473. It is a safety net with holes. File within the 30 days.
Frequently asked questions
Is the California answer deadline 30 calendar days or 30 court days?
Calendar days. Weekends and holidays count. The only relief the statutes give you is CCP section 12a: if the 30th day falls on a weekend or court holiday, the deadline moves to the next court day.
I was served by substituted service. When is my answer due?
Add 10 days after the mailing date — that is when service is deemed complete under CCP 415.20 — and then count 30 calendar days from that date (excluding the deemed-service day, per CCP 12). Check the proof of service in the court file for the exact mailing date.
The 30th day is a Saturday. Do I get until Monday?
Yes. CCP section 12a extends the deadline to the next day that is not a Saturday, Sunday, or holiday. But verify the court’s holiday schedule, and if you are cutting it close, file early rather than trusting the extension.
Can I get more time to answer in California?
Often, yes. The other side may agree to a written extension (confirm it in writing — a verbal promise is worth very little), or you can get a court order. If you plan to demur, the CIV-141 declaration gives an automatic 30-day extension when meet-and-confer efforts failed.
Do I still have to file an answer if I file a demurrer?
No — a demurrer, motion to strike, or motion to quash filed within the 30-day window counts as your response for now. If the court overrules the demurrer, it will set a new deadline for your answer.
What if I was never properly served?
Challenge service with a motion to quash under CCP 418.10, filed on or before your last day to plead. Do not simply ignore the papers — if service turns out to have been valid, ignoring it leads straight to default.
Not legal advice. This article is general information about California procedure, not legal advice and not a substitute for a licensed California attorney. Rules change, local courts add their own requirements, and the facts of your service determine your real deadline. If money or property you care about is on the line, talk to a lawyer before the clock runs out. If your case is in federal court instead, the rule is different — a federal answer deadline is typically 21 days under FRCP 12. And if you want to pin down any court deadline by date, our California court deadline calculator and general legal deadline calculator do the counting for you.