Yes, if you have been served with interrogatories in a civil lawsuit, you have to answer them. Under the Federal Rules of Civil Procedure, you have 30 days from the date of service to deliver written answers under oath, and you must respond to each question fully unless you raise a specific legal objection to it.1Legal Information Institute. Federal Rules of Civil Procedure Rule 33 – Interrogatories to Parties Silence is not an option. But you are not required to answer every question the other side sends, and knowing which ones you can refuse, and how to refuse them properly, is what keeps the process from getting away from you.
What “Answer” Actually Requires
Each interrogatory has to be answered separately, in writing, under oath. That signature carries the same weight as courtroom testimony, so your answers need to be truthful and thorough.
“Fully” does not mean whatever you remember off the top of your head. You are expected to provide information reasonably available to you, which for an individual means checking your records, and for a business means gathering information from across the organization, including pulling records from multiple departments or interviewing employees.1Legal Information Institute. Federal Rules of Civil Procedure Rule 33 – Interrogatories to Parties
Federal courts cap interrogatories at 25 per party, counting discrete subparts. The parties can agree to more, or the court can order a different number. State court limits vary.
If you need more than 30 days, you have two options. You can agree with the opposing party on an extension under Rule 29, which does not require court approval as long as it does not push against existing deadlines for completing discovery, hearing a motion, or going to trial.2Legal Information Institute. Federal Rules of Civil Procedure Rule 29 – Stipulations About Discovery Procedure If it would, you have to ask the judge.
When You Can Refuse to Answer a Specific Question
Refusing to answer a question is not the same as ignoring it. To refuse, you must serve a formal objection within the same 30-day window, and the objection must be stated with specificity, meaning you identify the legal basis rather than lodging a generic complaint.1Legal Information Institute. Federal Rules of Civil Procedure Rule 33 – Interrogatories to Parties The recognized grounds are narrower than most people assume.
Attorney-Client Privilege and Work Product
You can refuse to disclose confidential communications with your lawyer. A question asking what your attorney advised you to do is a textbook example. The work-product doctrine adds a related protection for materials prepared in anticipation of litigation, and it can cover materials prepared by people other than your attorney as long as those materials were created to prepare for the case.3Legal Information Institute. Attorney Work Product Privilege If the other side challenges a work-product objection, they must show a substantial need for the materials and an inability to get equivalent information elsewhere.
Relevance and Proportionality
A question has to seek information relevant to a claim or defense in the case and proportional to what the case actually calls for.4Legal Information Institute. Federal Rules of Civil Procedure Rule 26 – Duty to Disclose; General Provisions Governing Discovery An interrogatory probing your personal finances in a minor auto accident case would likely fail both tests. The older “reasonably calculated to lead to the discovery of admissible evidence” language was removed from the federal rules in 2015, so objections should be framed around relevance and proportionality.
Undue Burden
If answering would require effort or expense wildly out of proportion to the question’s importance, you can object. A demand to identify every email you have sent in the past ten years fits. But burden objections need supporting detail: the volume of records, the time required, the cost. Courts routinely disregard boilerplate burden objections that do not explain themselves.
Vagueness
If a question is genuinely so ambiguous that you cannot tell what it is asking, you can object. This is narrower than people think. Courts expect a reasonable effort to interpret the question, and if part of it is clear you should answer that part and object to the rest.
The Fifth Amendment
Even in a civil case, you can refuse to answer a question whose answer could expose you to criminal liability. No court can strike your pleadings, enter default, or hold you in contempt for invoking the privilege. Two limits matter. First, the privilege has to be invoked question by question; a blanket refusal across every interrogatory is improper when only some answers would be incriminating. Second, in federal civil proceedings, the opposing party may ask the jury to draw an adverse inference from your silence, so exercising the privilege carries a cost the other side can use against you on that issue.
Protective Orders for Sensitive Information
Some information is technically discoverable but sensitive enough that handing it over without safeguards would cause real harm. Trade secrets, proprietary business data, and deeply personal records are common examples. Rather than refusing outright, you can ask the court for a protective order under Rule 26(c).4Legal Information Institute. Federal Rules of Civil Procedure Rule 26 – Duty to Disclose; General Provisions Governing Discovery
The judge has broad flexibility. The court can block the discovery entirely, limit its scope, restrict who can see the information, require documents to be filed under seal, or impose conditions on how the information is used. You must show good cause, which typically means specific harm that would result from unrestricted disclosure, and you must certify that you first tried to resolve the issue with the opposing party.
How to Deliver Your Response
Your response document opens with the case caption identifying the court, the parties, and the case number. It names you as the responding party, identifies the party who sent the questions, and references the specific set of interrogatories being answered.
For each interrogatory, restate the question as written, then immediately either answer it fully or state your specific objection. If a question is partly objectionable and partly not, you have to answer the non-objectionable portion. The 1993 advisory committee notes to Rule 33 are explicit: if a question covers ten facilities and only two are problematic, you answer for the other eight.1Legal Information Institute. Federal Rules of Civil Procedure Rule 33 – Interrogatories to Parties
When the answer lives in business records and the opposing party could pull it just as easily as you could, Rule 33(d) lets you point them to the records instead of writing a narrative answer. You have to identify the records specifically enough that they can be found, and you have to give the other side a real chance to review and copy them. This is not a license to dump unsorted files on opposing counsel.
The person who gathered the information signs the answers under oath. For a business, that is the officer or agent who did the work. Your attorney separately signs any objections. Whether the signature needs to be notarized depends on local rules. The finished, signed document is served on opposing counsel by the deadline through whatever method the court allows: electronic filing, mail, or hand delivery. Interrogatory responses generally are not filed with the court itself; they enter the record only if someone later attaches them to a motion.
What Happens If You Miss the Objection Deadline
Under Rule 33(b)(4), any objection you do not raise in a timely response is waived.1Legal Information Institute. Federal Rules of Civil Procedure Rule 33 – Interrogatories to Parties If you let the 30-day deadline pass without objecting to an invasive or irrelevant question, you may have lost the ability to object at all. Courts can excuse the failure for good cause, but that is an uphill argument. If you need more time to finish substantive answers, serve your objections inside the original window anyway. Waiver is one of the most common and most avoidable discovery mistakes.
What Happens If You Ignore Interrogatories Entirely
If you blow past the deadline without answering or objecting, the process that follows is predictable and gets more painful the longer it runs.
First, the opposing party has to contact you and make a good-faith attempt to resolve the dispute. Rule 37(a)(1) requires any motion to compel to include a certification that the moving party tried to work it out first.5Legal Information Institute. Federal Rules of Civil Procedure Rule 37 – Failure to Make Disclosures or to Cooperate in Discovery; Sanctions This meet-and-confer is your last off-ramp before the judge is involved.
If that fails, the other side files a motion to compel. If the court grants it, you will typically be ordered to pay the other side’s reasonable expenses, including attorney’s fees, for having to bring the motion.5Legal Information Institute. Federal Rules of Civil Procedure Rule 37 – Failure to Make Disclosures or to Cooperate in Discovery; Sanctions
If you still refuse after a court order, Rule 37(b)(2) gives the judge a wide menu of sanctions:5Legal Information Institute. Federal Rules of Civil Procedure Rule 37 – Failure to Make Disclosures or to Cooperate in Discovery; Sanctions
- Deeming certain facts established in the opposing party’s favor, so you can no longer contest them.
- Barring you from introducing certain evidence or supporting specific claims or defenses.
- Striking part or all of your complaint or answer.
- Staying the case until you comply.
- Dismissing the case if you are the plaintiff, or entering default judgment against you if you are the defendant.
- Holding you in contempt of court, which can carry additional penalties.
Courts generally escalate in steps, starting with fees. But judges have discretion, and flagrant or repeated non-compliance can move the timeline along quickly.
The Duty Does Not End at Service
Under Rule 26(e), if you later discover that an answer you gave was incomplete or incorrect in a material way, you must supplement or correct it in a timely manner.4Legal Information Institute. Federal Rules of Civil Procedure Rule 26 – Duty to Disclose; General Provisions Governing Discovery That duty runs through trial. The one built-in exception: you do not need to formally supplement if the corrective information has already been communicated to the other parties during discovery or in writing. Failing to supplement when required can lead to exclusion of the undisclosed information at trial, which is the kind of sanction that can quietly gut a case without any dramatic courtroom moment.