What Is a Subpoena? Types and What to Do
What is a subpoena? If you’ve just been handed one, the word alone probably spiked your heart rate — it sounds like something from a courtroom drama, and the formal language doesn’t help. Take a breath. A subpoena is simply a legal order requiring you to do something specific for a legal proceeding: show up and testify, produce documents, or both. It’s serious — ignoring one has real consequences — but it’s also routine, and most people who receive one are witnesses, not suspects. This guide explains the types, what each one demands, exactly what to do if you’re served, and what happens if you ignore it.
What Is a Subpoena? The Plain-English Definition
A subpoena is a written order, issued under a court’s authority (or in some cases by a government agency or an attorney acting under court authority), commanding a person to take a specific, clearly described action related to a legal case. The word comes from Latin meaning “under penalty” — which tells you the essential thing about it: compliance isn’t optional.
Unlike the cease and desist letter — which is just a demand from a private party — a subpoena carries the court’s weight behind it. Disobeying one can lead to fines or jail for contempt of court. That’s the bright line: a subpoena is an order, not a request.
Subpoenas are issued in criminal cases, civil lawsuits, congressional investigations, grand jury proceedings, and administrative hearings. You can receive one even if you have nothing to do with the dispute — courts routinely subpoena witnesses, record-holders, and anyone with relevant information or documents.
The Two Main Types (Plus a Third You’ll Hear About)
Subpoena ad testificandum: “come testify”
This orders you to appear — in court, at a deposition, before a grand jury — and give testimony under oath. It will specify where, when, and in what proceeding. If you’re served one of these, your job is straightforward: show up on time, tell the complete truth, and answer the questions asked. You generally can’t refuse just because it’s inconvenient, though there are limited exceptions (more below).
Subpoena duces tecum: “bring the documents”
This orders you to produce documents, records, or other tangible things — emails, contracts, financial records, medical files, data. It describes what must be produced and by when. This is the type businesses dread: a broad duces tecum can demand years of records, and compiling them is expensive and time-consuming.
In practice, a single subpoena very often combines both requirements: appear in person and bring the specified documents with you.
Grand jury subpoenas
Worth distinguishing because they come with extra secrecy. Grand jury proceedings are confidential — if you receive a grand jury subpoena, there may be strict limits on what you can discuss about it, and the stakes tend to be criminal. Anyone served with one of these should get a lawyer immediately, not eventually.
How Subpoenas Are Served
A subpoena has to be properly delivered to be enforceable — and the rules vary by jurisdiction. Common methods include personal delivery (handed to you directly), delivery to someone of suitable age at your residence, and in some jurisdictions, certified mail. Some places allow service by email or even social media in limited circumstances, but personal service remains the standard.
What matters: if you were properly served, “I didn’t read it” or “I threw it away” doesn’t help you. And deliberately dodging service rarely works — courts have procedures for that, and evasion tends to annoy judges, which is never strategically wise.
What to Do If You’re Served: Step by Step
Step 1: Read it carefully — all of it
Identify exactly what it demands: testify, produce documents, or both. Note the deadlines, the location, the case name, and who issued it. Note anything about confidentiality. Don’t skim — the details are the whole ballgame.
Step 2: Don’t ignore it, and don’t panic
These are the two failure modes. Ignoring a subpoena can lead to contempt charges — fines or jail. Panicking leads to mistakes like destroying documents (which can be a crime in itself — obstruction) or calling the other side to argue. Be calm, be prompt, be methodical.
Step 3: Preserve everything relevant
The moment you’re served with a duces tecum, you have a duty to preserve the requested materials. Do not delete emails, shred documents, or “clean up” files. Destroying evidence after receiving a subpoena can lead to criminal obstruction charges and devastating adverse inferences in the underlying case. If in doubt, preserve more rather than less.
Step 4: Get a lawyer — promptly
Even if you’re “just a witness,” a lawyer protects you. They can: verify the subpoena is valid and properly served; negotiate the scope (broad document demands are routinely narrowed); arrange the logistics of testimony; assert privileges you may not know you have; and make sure you don’t accidentally waive rights. For grand jury or criminal-adjacent subpoenas, this step is urgent, not optional.
Step 5: Comply — or challenge properly
If the subpoena is valid, comply: show up on time, bring what’s requested, testify truthfully. If you believe it’s improper — overly broad, unduly burdensome, seeking privileged material, or served incorrectly — your lawyer can file a motion to quash (cancel it) or modify it. This is the critical point: you challenge a subpoena through the court, not by ignoring it. Unilateral non-compliance is contempt; a motion to quash is your legal right.
Your Rights and Protections
Being subpoenaed doesn’t mean being defenseless:
- The Fifth Amendment (US). You can’t be compelled to give testimony that would incriminate you. If testifying risks self-incrimination, say so through your lawyer — this is precisely when you need one.
- Privileges. Attorney-client communications, spousal communications, doctor-patient records (in many contexts), and other privileged materials can be protected. But privilege must be asserted properly — you can’t just declare documents “private.”
- Reasonable scope. Courts can narrow subpoenas that are overbroad or impose undue burden. “Give us every email you’ve ever sent” is the kind of demand that gets trimmed.
- Witness fees and expenses. In many jurisdictions, subpoenaed witnesses are entitled to a daily fee and mileage. It’s modest, but it exists.
- Protection from retaliation. Employers generally can’t fire you for complying with a subpoena, and witness intimidation is a crime.
Penalties for Ignoring a Subpoena
This is the “under penalty” part. Consequences escalate:
- Contempt of court. The court can hold you in contempt, which can mean fines, jail time, or both — until you comply, in the case of civil contempt.
- Bench warrant. The court can issue a warrant for your arrest to compel your appearance.
- Adverse consequences in the case. In civil litigation, a party that withholds subpoenaed documents can face sanctions including losing the case on that issue.
- Separate criminal exposure. Destroying documents to avoid a subpoena can constitute obstruction of justice — a far more serious problem than whatever the subpoena was about.
The pattern is consistent: the punishment for dodging a subpoena is reliably worse than the inconvenience of complying with it.
Subpoena vs. Summons: Don’t Confuse Them
People mix these up constantly, so let’s draw the line. A summons notifies you that you are being sued — you’re a party to the case, and you must respond (usually by filing an answer) or risk a default judgment against you. A subpoena orders you to provide testimony or documents for someone else’s case — you’re typically a witness or record-holder, not a defendant.
The practical difference: a summons means “you’re in the fight”; a subpoena means “the fight needs something from you.” Both demand attention, both have deadlines, and both are ignored at your peril — but they trigger completely different responses. If you receive a summons, you need a litigation lawyer immediately and a formal legal response. If you receive a subpoena, you need advice on compliance or challenge. Knowing which paper you’re holding is step zero.
Subpoenas You Might Receive Without Being in Trouble
Most subpoena recipients aren’t parties to the case at all — they’re pulled in because they saw something, hold something, or know something relevant. Common scenarios:
- You’re a witness to an accident, a transaction, or an event relevant to someone else’s lawsuit.
- You hold records — as an employer, a bank, a landlord, a service provider — that one side needs.
- You’re an expert whose opinion or data is relevant.
- Divorce or custody cases subpoena financial records, employers, and acquaintances routinely.
- Journalists, doctors, and therapists receive subpoenas seeking notes and records, triggering privilege fights.
Being subpoenaed is not an accusation. Treat it as an administrative burden with legal teeth: handle it properly, get advice early rather than late, comply or challenge through the court — and move on. The people who get into trouble over subpoenas are almost never the ones who took them seriously from day one.
Frequently Asked Questions
What is a subpoena in simple terms?
A subpoena is a court-backed legal order requiring you to testify, produce documents, or both in connection with a legal proceeding. Unlike a request or demand letter, it carries penalties — including fines or jail for contempt — if ignored.
What are the two main types of subpoenas?
A subpoena ad testificandum orders you to appear and testify under oath. A subpoena duces tecum orders you to produce documents or records. Many subpoenas combine both requirements.
Can you refuse a subpoena?
You can’t simply refuse. Valid grounds to resist include improper service, overly broad or burdensome demands, and privileged or self-incriminating content — but these must be raised through a lawyer and usually via a motion to quash filed with the court, not by ignoring the subpoena.
What happens if you ignore a subpoena?
The court can hold you in contempt (fines or jail), issue a bench warrant for your arrest, and impose sanctions. Destroying documents to avoid a subpoena can additionally lead to obstruction of justice charges.
Do I need a lawyer if I receive a subpoena?
It’s strongly advisable, even if you’re only a witness. A lawyer can verify the subpoena’s validity, negotiate its scope, protect privileged material, and ensure you don’t accidentally waive rights — especially important for grand jury subpoenas or anything touching on criminal matters.
