Debt Collection Basics: What Collectors Can and Cannot Do

If a debt collector has started calling, texting, or sending letters, you have more rights than you might think. A federal law — the Fair Debt Collection Practices Act (FDCPA) — puts firm limits on what third-party collectors can say and do, gives you the right to demand proof of the debt, and lets you cut off contact in writing. This guide walks through those rights in plain English: who the law covers, what collectors are banned from doing, how the dispute process works, and what changes the moment a collection problem turns into a lawsuit.

Who counts as a debt collector

The FDCPA applies to people and companies that regularly collect debts owed to someone else. That includes collection agencies hired by a creditor, debt buyers that purchase old accounts for pennies on the dollar and then collect for themselves, and law firms whose business is collecting consumer debts.

It generally does not cover the original creditor — the credit card company, hospital, or lender you first did business with — when it collects its own debts under its own name. Other laws may still restrict what an original creditor can do, and many states have collection statutes that sweep more broadly, but the specific rights described in this guide come from the federal rules that govern third-party collectors.

The debt itself must be a consumer debt: money owed for personal, family, or household purposes, such as credit cards, medical bills, auto loans, or personal loans. Business debts fall outside the FDCPA.

What collectors are allowed to do

A legitimate collector can contact you by phone, letter, email, or text message to ask for payment, explain the account, or offer a settlement. It can report the account to credit bureaus, and if the debt is within the legal time limit for suing, the creditor or debt buyer can file a lawsuit.

None of that is pleasant, but it is legal. The line is crossed when a collector’s conduct becomes abusive, deceptive, or unfair — and the FDCPA draws that line clearly.

What the FDCPA prohibits

The law bans three broad categories of conduct by third-party collectors:

• Harassment. Repeated calls meant to annoy you, threats of violence, obscene language, and publishing lists of people who allegedly owe money are all illegal. Collectors also may not call at unreasonable times — generally before 8 a.m. or after 9 p.m. — or keep calling you at work after you say your employer prohibits it.
• False or misleading statements. A collector cannot lie about the amount you owe, pretend to be an attorney or a government agency, claim you committed a crime, or threaten actions it does not intend to take or cannot legally take. Fake “court documents” and false arrest threats fall squarely in this category.
• Unfair practices. Collectors may not add unauthorized fees or interest, deposit a post-dated check early, or use other tactics the law treats as unfair.

You also have the right to tell a collector, in writing, to stop contacting you. After receiving that letter, the collector may generally contact you only to confirm it is stopping or to tell you about a specific action, such as filing a lawsuit. Be thoughtful before using this option: it stops the calls, but it does not erase the debt, and it may nudge a collector toward suing rather than negotiating.

The validation notice and your right to dispute

Early in the process — either in its first communication or shortly afterward — a collector must send you a validation notice. This notice identifies the collector, names the creditor, states the amount claimed, and explains how to dispute the debt. It is the single most important document in a collection dispute, because it starts the clock on your strongest tool: the written dispute.

If you dispute the debt in writing within 30 days of receiving the notice, the collector generally must stop collecting until it sends you verification. If the account is not yours, the amount is wrong, or you simply do not recognize it, that pause gives you room to sort things out before paying anything. Our companion guide to the debt validation notice explains the notice line by line, including how the 30-day window works and what to put in a dispute letter.

Old debts and the statute of limitations

Every state sets a time limit — a statute of limitations — on how long a creditor or debt buyer can sue to collect a debt. The length varies by state and by the type of debt, so this guide will not quote numbers; the limit that applies to you depends on where you live and what kind of account it is.

Two things are worth understanding about old debt. First, a debt that is past the limit does not vanish. A collector may still ask you to pay, and the account may still appear on your credit report for as long as reporting rules allow. What the expired limit usually removes is the collector’s ability to win a lawsuit — if you show up and raise it as a defense.

Second, and this is the trap: in some states, making a payment on an old debt, or even acknowledging in writing that you owe it, can restart the clock and revive the collector’s right to sue. Collectors sometimes ask for a small “good faith” payment for exactly this reason. Before paying anything on a debt that has been dormant for years, find out how your state treats old debts — a legal aid office or consumer attorney can tell you quickly.

Warning signs of a fake collector

Scammers imitate debt collectors because the script writes itself: an urgent call, an alleged debt, a demand for immediate payment. Slow down if you see any of these signs:

• The caller refuses to send a written validation notice or to give a company name, mailing address, and callback number.
• Payment is demanded through gift cards, wire transfers, cryptocurrency, or payment apps.
• The caller threatens immediate arrest, deportation, or license suspension.
• You are pressured to pay right now and told not to verify the debt with the original creditor or anyone else.
• The caller already has some of your personal information and uses it to sound official while asking you to “confirm” the rest. Never confirm a Social Security number or bank details for an unverified caller.

A real collector can put the debt in writing. Ask for the notice, hang up, and verify independently before paying a cent.

If a collector sues you

A lawsuit changes everything. A summons and complaint are not collection letters — they are court papers with a hard deadline, and if you do not respond, the court can enter a default judgment against you. A judgment can open the door to wage garnishment or frozen bank accounts, subject to federal and state limits and exemptions that vary by state.

Never ignore a debt lawsuit, even if the debt is not yours, the amount is wrong, or the debt is old. Those are defenses — but only if you show up to raise them. Debt buyers sometimes sue on thin paperwork and win almost entirely through default judgments against people who never respond. Start with our guide on what to do after receiving court papers, and if you are not sure whether the document you received is really a summons, see what a summons is.

Keep records from day one

Almost every right described above works better with documentation. Keep every letter and envelope, save texts and voicemails, and log calls with the date, time, company name, and what was said. Keep your own account records — statements, payment confirmations, settlement letters — and if anything shows up in court papers or on a credit report, save those too. Good records turn “he said, she said” into a paper trail.

When to get help

Get help promptly if you have been sued, a collector is threatening or harassing you, the debt involves identity theft, or you simply cannot tell whether a debt is real. Legal aid organizations help eligible people with debt collection lawsuits and garnishment problems free of charge — see our legal aid basics guide to learn how eligibility works, and our guide to finding legal help for lawyer referral services, court self-help centers, and other starting points. You can also submit a complaint about a collector to the CFPB or FTC; complaints create a record and can prompt action against companies that break the rules.