Mistake #1: Disputing by Phone Instead of Writing
The FDCPA requires your dispute to be in writing to trigger the collector's obligation to stop and validate. A verbal dispute on the phone does not activate the Section 1692g(b) protections.
What happens: You call the collector and say "I dispute this debt." They note it in their system and keep calling. You have no proof of the dispute and no legal protection.
Do this instead: Send your dispute in writing via certified mail with return receipt requested. The green card proves delivery. See our free template.
Mistake #2: Missing the 30-Day Window
The 30-day clock starts when you receive the collector's validation notice. If you wait too long, you lose the right to force the collector to stop while they validate.
See The 30-Day Window for full details on timing.
Do this instead: Send your letter within one week of receiving the collector's notice. Do not procrastinate.
Mistake #3: Acknowledging the Debt Is Yours
Your validation letter should never say anything like "I know I owe this, but..." or "I'm willing to pay, but first..." These statements can be used against you in court.
What happens: You write "I know I owe ABC Bank, but the amount seems wrong." The collector now has written evidence that you acknowledged the debt. In court, they will use your own words against you.
Do this instead: Always refer to the "alleged debt." Never admit it is yours. The template uses careful language for exactly this reason.
Mistake #4: Sending via Regular Mail
If you send via regular first-class mail, you have no proof the collector received your dispute. They can claim they never got it and continue collecting.
Do this instead: Always send via USPS Certified Mail with Return Receipt Requested. It costs a few dollars extra but provides irrefutable proof of delivery.
Mistake #5: Not Keeping Copies
If the collector violates the FDCPA by continuing to collect after your dispute, you need evidence. If you did not keep a copy of your letter, you cannot prove what you sent.
Do this instead: Before mailing, make a photocopy of the signed letter. Keep it with the certified mail receipt. When the green card comes back, staple it to the copy. Store everything in one folder.
Mistake #6: Sending the Letter to the Wrong Entity
Your validation letter must go to the debt collector who contacted you -- not the original creditor. The FDCPA applies to third-party collectors, and the validation process is between you and the collector.
What happens: You send the letter to your old bank instead of the collection agency. The bank is not subject to FDCPA validation requirements. The collection agency never received a dispute and continues collecting.
Do this instead: Send the letter to the exact name and address shown on the collector's notice. That is the entity with the legal obligation to validate.
Mistake #7: Including a Partial Payment
Some people send a small payment "in good faith" along with their validation request. This is counterproductive for several reasons:
- A payment can be interpreted as acknowledging the debt
- In some states, a payment can restart the statute of limitations
- It signals to the collector that you are willing to pay, reducing their motivation to abandon the debt
Do this instead: Send only the dispute letter. Do not include any payment, no matter how small. Validation and payment are separate conversations.
Mistake #8: Using an Overly Aggressive Tone
Templates found online sometimes include threats like "I will sue you" or "I know my rights and you are in violation." While you certainly have the right to be assertive, an aggressive tone can backfire:
- It can prompt the collector to hand your account to a litigation department
- It makes you look difficult if the letter is ever shown to a judge
- It does not strengthen your legal position in any way
Do this instead: Be firm but professional. State the law. Request the documentation. Let the statute do the heavy lifting. Our template strikes the right balance.
Checklist: Do It Right
- Send within 30 days of receiving the collector's notice
- Send in writing (not by phone or email)
- Use certified mail with return receipt requested
- Keep a copy of everything
- Never acknowledge the debt is yours
- Never include payment
- Send to the collector, not the original creditor
- Be professional, not aggressive