Demand validation from a debt collector

For a debt collector's first contact. Disputing in writing within 30 days of their validation notice requires the collector to pause collection of the disputed amount until they verify the debt. This letter makes that request precisely and asks them to communicate in writing.

The lever: A written dispute inside the 30-day window puts the burden of proof back on the collector and pauses collection until they meet it.

Fill this letter in →All seven letters

⏳ FDCPA written-dispute window: 30 days

A written dispute inside this window requires the collector to pause collection of the disputed amount until they send verification.

Date on the collector's validation notice

example — counting from today

30 days left — this window closes on August 31, 2026. Send by certified mail with return receipt so you can prove the date it arrived.

The letter

Bracketed placeholders are the fields you fill in. The generator does the filling and keeps your draft in your browser.

[YOUR FULL NAME]
[YOUR ADDRESS]

[TODAY'S DATE]

[COLLECTION AGENCY NAME]
[THEIR ADDRESS]

Re: Account [THEIR REFERENCE OR ACCOUNT NUMBER] — written dispute and request for validation

To whom it may concern,

I am responding to your communication regarding the account above. Your validation notice is dated [DATE OF THEIR VALIDATION NOTICE].

I dispute this debt and request validation. Please provide:

1. The amount claimed and an itemization showing how it was calculated, including any interest, fees, or charges added since the original obligation.
2. The name and address of the original creditor.
3. Documentation showing that you are entitled to collect this debt.
4. The date of the original obligation and the date of the last payment on the account.

Under the Fair Debt Collection Practices Act, as implemented by Regulation F, a written dispute made within 30 days of the validation notice requires you to cease collection of the disputed amount until you have provided verification.

Please communicate with me in writing at the address above regarding this account, rather than by telephone.

This letter is not an acknowledgement that the debt is owed, and it is not a promise to pay.

Sincerely,

[YOUR FULL NAME]

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This is a template, not legal advice.

What this letter rests on

After you send it

Day 7Send by certified mail with return receipt if you have not already. Keep the receipt — proof of delivery inside the 30-day window is the whole point.
Day 30Collection contact continuing without verification? Document each contact (date, time, method) and file a complaint at consumerfinance.gov/complaint.
Day 45If verification arrives, compare it against your own records before doing anything else — including checking whether the amount and dates actually match.

The case tracker turns this schedule into dated reminders for one specific bill, stored in your browser.

Frequently asked questions

How long do I have to dispute in writing?

Thirty days from the date you receive the collector's validation notice. Inside that window, a written dispute requires the collector to pause collection of the disputed amount until they send verification. Outside it you can still dispute, but that pause is no longer automatic — so the date on the notice matters.

Should I call them instead? It would be faster.

The protection attaches to a written dispute, and a phone call leaves no record of what either side said. This letter also asks them to communicate in writing, which keeps the whole exchange documentable. The CFPB recommends certified mail with return receipt for exactly this reason.

Does disputing mean I am refusing to pay?

No, and the letter says so explicitly: it is neither an acknowledgement of the debt nor a promise to pay. You are asking the collector to show that the amount is right and that they have the right to collect it — which is a reasonable question that a legitimate collector can answer.

What if the collector keeps calling anyway?

Document every contact — date, time, number, what was said — and submit a complaint to the CFPB at consumerfinance.gov/complaint. Threats of arrest, calls designed to wear you down, and collection activity on a disputed debt without verification are prohibited conduct, not just rude behavior.

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Other situations

Request an itemized bill Dispute a billing error Billed above the cash price

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