An old debt can feel like a ghost that refuses to leave. You thought the account was behind you, then a collector calls or sends a letter demanding money. This happens often because banks and lenders sell unpaid accounts to debt buyers for pennies on the dollar. The debt buyer then tries to collect the full balance plus interest and fees. Ignoring the contact can lead to serious consequences, but panicking and paying immediately can also be a mistake.

Start by confirming that the debt is really yours. Ask the collector to send a written notice. Under federal law, a collector must tell you how much you owe, who the original creditor was, and how to dispute the debt. You generally have thirty days to dispute it in writing. If you do not, the collector may treat the debt as valid. Send your dispute by certified mail and keep a copy. If the debt is not yours, or the amount is wrong, say so clearly. Collectors sometimes chase the wrong person or mix up accounts.

Next, find out how old the debt is. Every state has a legal time limit for suing over unpaid debt. In many states, it is three to six years, but some states allow longer. The clock usually starts from the date you first missed a payment. If the time limit has passed, a collector can still call and ask you to pay, but they cannot win a lawsuit. They may still threaten to sue because they hope you do not know your rights. Be careful not to restart the clock. In many states, making a partial payment or promising in writing to pay can revive an old debt.

Old debt can also show up on your credit report. Negative information generally stays for seven years from the original missed payment. Selling the debt to another collector does not usually reset that seven-year clock. Check your credit reports for errors. If a collector reports an old debt that should have fallen off, dispute it with the credit bureaus. Paying a collection account does not automatically remove it from your report. It may update to “paid,“ which can help, but the negative mark can remain.

If you ignore a collector for too long, they may sue you. A lawsuit is one of the biggest consequences of unpaid debt. If they win, they can take money from your paycheck, known as wage garnishment, or take money from your bank account. They may also place a legal claim on your property. If you receive court papers, do not ignore them. Respond by the deadline. Show up for your court date. Bring proof if the debt is old, paid, or not yours. A default judgment, which happens when you do not respond, gives the collector more power. Consider talking to a consumer attorney or legal aid office.

You also have control over communication. You can send a letter asking a collector to stop contacting you by phone. That does not erase the debt, and they can still sue, but it can reduce harassment. Keep records of every call and letter. Write down dates, names, and what was said. Do not give bank account or debit card information unless you have a written agreement.

If the debt is valid and still within the legal time limit, you may be able to negotiate. Collectors often accept less than the full balance because they bought the debt cheaply. You might offer a lump sum or a payment plan. Before paying, get the agreement in writing. Confirm the amount, the due date, and what will happen to your credit report. Make sure the remaining balance will be forgiven and not sold to another collector. If you cannot pay, credit counseling or a debt management plan may help.

An old debt does not disappear just because time has passed. But you are not helpless. Verify the debt, know the legal time limit, check your credit report, and respond quickly if you are sued. Get every payment deal in writing. Those steps turn a frightening collection call into a problem you can manage with a clear plan.