Dispute letter to a debt collector you can edit and mail

A dispute letter to a debt collector tells the collector, in writing, that you do not accept a debt or part of it, and why. The sample below follows 15 U.S.C. 1692g and the CFPB's sample letter "I do not owe this debt," one of five the CFPB publishes (page last reviewed 15 Oct 2026). We read both on 13 Nov 2026. This page is general information, not legal advice.

Sample dispute letter to a debt collector

Edit the brackets and keep the tone plain. The two paragraphs after "To whom it may concern" are what goes into the two boxes of the template above.

[Your name]
[Your mailing address]
[Date]

[Collector's name]
[The dispute address printed on the collector's notice]

Re: [Collector's reference or account number]

To whom it may concern:

You contacted me by [mail / phone] on [date] about the debt above. I dispute this debt. [Or: I dispute part of this debt, as explained below.] [One or two sentences with your reason. See the table below.]

Please mail me verification of the debt. If you report this debt to a credit bureau, or have already done so, please report it as disputed. If you send this account to another company, please tell them it is disputed.

Sincerely,
[Your name]

The last two requests come from the CFPB's letter, which asks the collector to "record that I dispute having any obligation for this debt," to tell any company it forwards the debt to "that it is disputed," and, "if you report it to a credit bureau (or have already done so), also report that the debt is disputed."

Wording for the reason, by situation

The statute does not ask you for a reason. It only asks that the dispute be in writing. A reason is still worth a sentence, because it tells the collector what to look at. These sentences are ours, except where marked.

Your situation	A sentence you could use	Copies people enclose
The debt is not yours	"I do not have any responsibility for the debt you're trying to collect." (CFPB sample letter)	None needed to dispute
You paid it	"I paid this account in full on [date]."	Receipt, bank statement page or payoff letter
The amount is wrong	"I dispute [amount] of the [amount] you are asking for, because [a payment was not credited / a fee was added that I did not agree to]."	The statement or receipt that shows the difference
You do not recognize the creditor	"I do not recognize [name]. Please send me the name and address of the original creditor."	None

Three of these match the check boxes on the response form of the CFPB's model validation notice: "This is not my debt," "The amount is wrong" and "Other" (12 CFR 1006.34). The fourth is a right of its own: a written request for the original creditor's name and address, made within the thirty days, also stops collection until the collector mails it.

Write only what is true and what you can stand behind. The letter is your statement, and the collector keeps it.

Dispute letter or validation letter?

Both are replies to the same notice, under the same section of the law. They differ in what you know.

• You know what is wrong. The debt is someone else's, you paid it, or the number is off. That is a dispute letter: say so, and say why.
• You do not know what the debt is. You want the amount broken down, the creditor named, the paper trail. That is a debt validation letter, and its sample asks for those items one by one.

Nothing stops you from doing both in one letter: dispute the debt and ask for the details. The stop in collection comes from the written dispute either way.

A third letter does something else: a cease and desist letter to a debt collector asks it to stop communicating with you. That one limits contact. It does not ask the collector to prove anything.

What a written dispute does

Section 1692g(b) says that if you notify the collector in writing within the thirty-day period that the debt, "or any portion thereof," is disputed, the collector "shall cease collection of the debt, or any disputed portion thereof," until it obtains verification of the debt or a copy of a judgment and mails it to you. Four points follow from the text and from 12 CFR 1006.38:

• A partial dispute is allowed. The stop covers the part you dispute. If you dispute one fee, the rest of the balance is not covered by it.
• Writing is what triggers the stop. The CFPB's model validation notice says "Call or write to us" to dispute, but only "If you write to us" does the collector have to stop collection on the amount you dispute.
• There is no clock on the collector's answer. It must stop until it responds. The law does not give it a number of days.
• A repeat gets a short reply. If you send a dispute that is substantially the same as one the collector already answered, with no new and material information, it may tell you the dispute is duplicative and point to its earlier response.

The thirty days run from when you receive the collector's notice, and the notice must print the end date. The validation letter page shows how that date is counted.

Two protections do not depend on winning the argument. Not disputing "may not be construed by any court as an admission of liability." And under 15 U.S.C. 1692e(8) a collector may not pass on credit information it knows to be false, "including the failure to communicate that a disputed debt is disputed."

What it does not do

A dispute does not erase a debt. The CFPB's sample letter says so in its own background note: "Stopping contact does not cancel the debt. So, if a debt collector still believes you really are responsible for the debt, they could still take other action. For example, you still might be sued or have the status of the debt reported to a credit bureau."

Verification is also not a court ruling. If the collector mails verification, collection can start again. If you are sued, a letter is not an answer to the lawsuit, and the court papers will carry their own deadline.

Three different disputes people mix up

Search for a dispute letter and half the results are about credit reports. They are different letters to different companies:

You write to	What you are disputing	Law	Timing in that law
The debt collector	The debt itself, or part of it	15 U.S.C. 1692g; 12 CFR 1006.38	A written dispute within the thirty days stops collection until verification is mailed. No deadline for the reply.
A credit bureau	An item in your credit report	15 U.S.C. 1681i	The bureau reinvestigates before the end of the 30-day period that starts when it receives the dispute.
The company that reported the item	The same item, at its source	CFPB, How do I dispute an error on my credit report?	The CFPB says furnishers generally must investigate and respond within 30 days of receiving the dispute.

A collection account that is wrong on your credit report can call for more than one of these. For the bureaus, the addresses we have checked are on the Equifax and Experian pages.

Where to send it, and why people use certified mail

Regulation F requires the validation notice to show "the mailing address at which the debt collector accepts disputes and requests for original-creditor information." Use that address. It is often not the payment address.

The law does not require certified mail. The CFPB's sample letter says: "You should consider sending the letter by certified mail or another method by which you can establish when the letter is received by the intended recipient." The FTC's debt collection FAQs say to send the dispute letter within 30 days, to consider certified mail with a return receipt, and to keep a copy.

The reason is the date. Your rights under section 1692g turn on when the collector was notified, and a return receipt records who received the letter and on what day.

At a post office the Certified Mail fee is $5.55 and an electronic return receipt is $2.91, plus postage (USPS Notice 123, price list effective 4 Oct 2026, read 13 Nov 2026). With Certisent you fill in the template, we print the letter and hand it to USPS as Certified Mail for $14.99, and you get the tracking number, a proof of mailing and the electronic return receipt by email. The letter goes out under your name and return address. We do not write it for you and we do not contact the collector. We cannot promise a delivery date, so mail early enough for the letter to arrive inside the thirty days.