Somebody handed you a stack of paper, or left it at your door, and your stomach dropped. Read this before you do anything else. It takes six minutes and it will save you from the single most expensive mistake people make.
It isn't a bad argument. It isn't missing evidence. It's doing nothing.
When someone is sued for a debt and never files a response, the court can enter what's called a default judgment — the plaintiff wins because you didn't show up to disagree. A judgment is a different animal from a collection letter. Depending on your state, it can be enforced through wage garnishment, bank levies, and liens, and it can sit on the books for years and be renewed.
Most debt collection cases are won by default, not on the merits. Which means the single act of responding on time already puts you ahead of most people who get served.
You don't need to know your whole defense this week. You need to know three things: your exact deadline, what you're required to file, and where to file it. Everything else can be figured out after those are locked down.
Your deadline is not general knowledge and it is not something a website can tell you. It is printed on the paper you were handed, and it depends on which court you're in.
In federal court, the baseline is spelled out in the Federal Rules of Civil Procedure:
within 21 days after being served with the summons and complaint. If service was waived under Rule 4(d), it becomes
60 days after the request for a waiver was sent(90 days if sent outside the United States).
But most debt collection suits are filed in state court, and every state sets its own response window — they are not all the same, and some states set different clocks for small claims than for regular civil cases. Do not assume 21 or 30 days.
Where to actually look: the summons itself. It is required to tell you how long you have. Read the front page, in full, out loud if you have to. Then confirm it against your court's own civil rules, which are published on your state judiciary's website. If the two disagree, call the clerk's office and ask — clerks answer procedural questions all day.
Not in your head. On a calendar, with an alarm, and on the front of the folder you're going to keep this case in.
Two things people get wrong when counting:
If you count and you're already close to the line, that's the moment to move fastest — not the moment to freeze. Some courts allow an extension if you ask before the deadline. Nobody grants one after.
In most civil cases, the response is called an Answer. It is not a letter and it is not a phone call to the collector. It is a document filed with the court, in that court's format, that responds to the complaint paragraph by paragraph — admitting what's true, denying what isn't, and stating that you lack enough information to admit or deny where that's the honest answer.
It's also where affirmative defenses are raised. Those are the arguments that say "even if some of this is true, here's why the plaintiff still shouldn't win" — things like the statute of limitations having run, or the plaintiff not actually owning the debt. Which defenses are available to you depends on your facts and your state's law.
Some states route smaller debt cases into small claims court, where you may not file a written answer at all — you may simply be required to appear on a date printed on the summons. Missing that appearance has the same effect as missing a filing deadline. Your summons will tell you which world you're in.
Debt that's been sold and resold often arrives in court with thin paperwork. A plaintiff suing on a purchased debt generally has to be able to show the account is yours, that the amount is right, and that they own the right to collect it. That proof isn't automatic — it gets tested through the case, and the mechanism for testing it is discovery, the formal process where each side requests documents and answers from the other.
That's a later step. It only exists for you if you answer on time.
That's the first 72 hours. Not solving the case — preserving your right to fight it.
Our Answer Kits walk you through the whole response — a state guide with the deadlines checked against the current court rule, an editable Answer template, a discovery starter aimed at debt buyers, and a court-day prep sheet. Idaho and Florida are live now.
See the Debt Defense desk →We are not attorneys and this is not legal advice. This guide is general legal education about how a process works. It is not advice about your specific situation, and reading it does not create an attorney-client relationship. Rules and deadlines differ by state and by court — always confirm against the paperwork you were served and your own court's current rules. If you need legal advice, consult a licensed attorney in your state.