If you see a debit card transaction you didn't authorize, call your bank using the verified number on the back of the card or on a statement. Then create a written record through the bank's secure message system, app, or approved email address. For many Regulation E errors, notice must reach the bank within 60 calendar days after it sends the statement showing the error. If your card or another access device was lost or stolen, reporting the loss within two business days of learning about it can preserve the strongest federal liability protection.

A written message won't guarantee a refund. It will give the bank the facts it needs to identify the transaction and investigate it. Don't guess a disputes email address, and don't send your full card number, PIN, password, or Social Security number through ordinary email.

The FTC sample letter for disputing credit and debit card charges offers a useful basic structure. The templates below adapt that structure for common debit card problems.

Pick the dispute route before you write

The reason for the dispute affects the deadline, evidence, and rules that apply.

An authorized purchase does not become a fraud claim because the item was late, defective, or disappointing. Describe the problem accurately. The Regulation E error-resolution rule generally covers unauthorized electronic fund transfers and certain account errors. It does not automatically require a refund for every disagreement about goods or services.

Banks sometimes use "chargeback" as a general label for a debit card dispute. Their internal process and card-network rules are separate from federal Regulation E rights. Ask the bank which process it is opening and what deadline applies.

Details to include

Give the bank enough information to find the transaction without putting sensitive data into an insecure message:

• Your name, address, phone number, and preferred contact method.
• The last four digits of the deposit account and debit card.
• The transaction date, posted amount, merchant name, and transaction type.
• The date you noticed the problem and, when relevant, the date of the statement showing it.
• A direct explanation of what happened and why the transaction is wrong.
• A brief timeline of your contact with the merchant or bank.
• A list of the documents attached.
• A request for a case number and written confirmation.

Attach copies of statements, receipts, order records, delivery records, and messages. Keep the originals. Redact unrelated transactions and sensitive information before uploading or sending anything.

10 debit card dispute email templates

Replace the bracketed text and remove any instructions that don't fit. Templates 6 through 8 concern authorized purchases or payments, so they should not be presented as fraud claims.

1. Unauthorized debit card transaction

Subject: Notice of unauthorized debit card transaction - [date], [$amount]

[Date]

Dear [Bank dispute team],

I am notifying you of an error involving my deposit account ending in [last four digits]. A debit card transaction from [merchant name] for [$amount] posted on [transaction date] and appeared on the statement sent on [statement date].

I did not authorize this transaction. [If relevant: My card was lost or stolen on [date], and I learned of the loss on [date]. / My card remains in my possession.]

Please treat this as notice of an error under Regulation E, investigate the transaction, and correct the account if an error occurred. Please reverse any fee caused by the error, confirm receipt, provide a case number, and tell me whether you need a signed statement or other information.

If you determine that no error occurred, please send the written explanation and the documents relied on in reaching that decision.

Attachments: [statement page], [other evidence]

Sincerely,

[Full name]
[Phone number]

2. Multiple unauthorized transactions

Subject: Urgent fraud report - account ending [last four digits]

[Date]

Dear [Bank fraud or dispute team],

I found the following transactions on my account that I did not authorize:

- [Date], [merchant or ATM], [$amount]
- [Date], [merchant or ATM], [$amount]
- [Date], [merchant or ATM], [$amount]

I first noticed them on [date]. [My card was lost or stolen on [date]. / My card is still in my possession, but I believe my card details or account credentials were compromised.]

I reported the issue by phone on [date]. My reference number is [case number], if available. Please secure the account, investigate each listed transaction, and tell me whether you need a fraud affidavit or other document. Please confirm the case number and send the written result of the investigation.

Attachments: [statement pages], [fraud report if filed], [other evidence]

Sincerely,

[Full name]
[Phone number]

Report the transactions to the bank even if you also file a police report. If an online scam was involved, you can report it to the Internet Crime Complaint Center, but that report does not replace notice to your bank.

3. Incorrect transaction amount

Subject: Debit card error - posted amount differs from authorized amount

[Date]

Dear [Bank dispute team],

I am disputing the debit card transaction from [merchant] dated [date]. I authorized a purchase for [$authorized amount], but the posted debit is [$posted amount]. The amount shown on my statement is incorrect.

I contacted the merchant on [date]. Its response was [brief description, or "I have not received a response"]. Please investigate the transaction, correct the account if appropriate, and reverse any fee caused by the error.

Please confirm receipt and provide a case number. If the claim is denied, please send the written explanation and the documents relied on.

Attachments: [statement], [receipt], [merchant correspondence]

Sincerely,

[Full name]
[Phone number]

Use this version when the posted transfer differs from the amount you authorized or from the transaction record. It isn't for a purchase you simply decided you no longer wanted.

4. Duplicate debit

Subject: Duplicate debit card transaction on [date] for [$amount]

[Date]

Dear [Bank dispute team],

My account ending in [last four digits] shows two posted transactions from [merchant] for [$amount] on [date]. I made only one purchase, so the second transaction appears to be a duplicate.

Please investigate and remove the duplicate debit, including any fee or overdraft charge caused by it. Please confirm receipt and provide a case number.

Attachments: [statement page], [receipt or order record]

Sincerely,

[Full name]
[Phone number]

List both transaction dates, amounts, and reference numbers if they differ. A statement page showing both posted transactions can help the bank identify the duplicate.

5. Unauthorized ATM withdrawal

Subject: Dispute of unauthorized ATM withdrawal on [date]

[Date]

Dear [Bank fraud or dispute team],

I am disputing an ATM withdrawal of [$amount] from my account ending in [last four digits]. It occurred on [date] at [ATM location or identification number]. I did not make or authorize this withdrawal.

[My debit card was in my possession at the time. / My card was lost or stolen, and I reported the loss on [date].] [I did not share my PIN with anyone, if true.]

Please investigate this electronic fund transfer and secure my account if necessary. Tell me what additional information you need, confirm receipt, and provide a case number.

Attachments: [statement page], [police or incident report if filed], [other evidence]

Sincerely,

[Full name]
[Phone number]

Report a missing card or compromised PIN immediately. The timing of that report can affect liability.

6. Goods or services not received

Subject: Request for debit card dispute - goods or services not received

[Date]

Dear [Bank dispute team],

I authorized a debit card purchase from [merchant] for [$amount] on [date]. This is not an unauthorized-transaction claim. The problem is that the goods or services were not provided.

Order or booking number: [number]
Expected delivery or service date: [date]
Merchant contact dates: [dates]
Merchant response: [brief summary]

I requested a refund from the merchant on [date], but [the merchant did not respond / refused the refund / promised to respond by [date]]. Does your bank offer a debit-card or card-network dispute process for this situation? Please tell me the applicable deadline and any required form or evidence.

Attachments: [order confirmation], [delivery record], [merchant correspondence], [refund request]

Sincerely,

[Full name]
[Phone number]

Non-delivery may follow a bank or card-network process rather than the Regulation E error process. Ask about it promptly because its deadline may not be the same as the 60-day statement deadline.

7. Returned purchase or missing refund

Subject: Debit card dispute - refund promised but not received

[Date]

Dear [Bank dispute team],

I am requesting help with a debit card purchase from [merchant] for [$amount] on [date]. I returned or canceled the purchase on [date]. The merchant [accepted the return / confirmed the cancellation] and promised a refund by [date], but the refund has not appeared in my account.

Merchant case or return number: [number]
Date I contacted the merchant: [date]
Merchant's refund promise: [brief description]

Please tell me whether this transaction qualifies for your debit-card dispute process and what documentation or deadline applies. Please confirm receipt and provide a case number.

Attachments: [return tracking], [cancellation confirmation], [merchant refund promise], [statement]

Sincerely,

[Full name]
[Phone number]

Keep the merchant's written promise, return tracking, and refund terms. Don't call the original purchase unauthorized if you made it.

8. Recurring debit after cancellation

Subject: Dispute of recurring debit after authorization was revoked

[Date]

Dear [Bank dispute team],

I canceled or revoked authorization for recurring [account debit or debit card payment] to [merchant] on [date] through [method]. Despite that cancellation, a debit of [$amount] posted on [date].

I contacted the merchant on [date], and its response was [brief summary]. Please investigate this debit and tell me how to stop future withdrawals or recurring payments. Please also tell me whether you need my cancellation request, a separate stop-payment request, or another form.

Please confirm receipt and provide a case number.

Attachments: [cancellation request], [merchant response], [statement]

Sincerely,

[Full name]
[Phone number]

The steps can differ for an ACH debit, a recurring card payment, and another type of electronic transfer. Ask the bank which payment rail is involved and whether it needs a separate stop-payment instruction.

9. Follow-up on a pending dispute

Subject: Follow-up on debit card dispute case [case number]

[Date]

Dear [Bank dispute team],

I reported a dispute on [date] through [phone, secure message, app, or mail]. The case number is [case number]. The disputed transaction was [merchant, date, and amount].

I am following up to confirm that my notice and attachments were received. Please provide the current status, tell me whether you need anything else from me, and explain whether a provisional credit has been issued. Please also tell me when I should expect the written result.

Please add this message to the original dispute record and confirm receipt.

Sincerely,

[Full name]
[Phone number]

Save the sent message, delivery confirmation, and any reply. If the bank does not confirm receipt, call and ask whether you must resubmit through another channel.

10. Request for review of a denied dispute

Subject: Request for review of denied debit card dispute [case number]

[Date]

Dear [Bank dispute team],

I received your denial dated [date] for dispute case [case number], involving [merchant, date, and amount]. I am requesting a review because [briefly identify the missing fact or attached evidence].

Please provide the written explanation for the decision and the documents relied on, including any transaction or authorization record relevant to the claim. I have attached [list new or previously submitted evidence].

Please confirm whether your bank offers a reconsideration or appeal process, identify the deadline, and confirm receipt of this request.

Sincerely,

[Full name]
[Phone number]

Keep the review request focused on facts and documents. A short explanation of what the original investigation missed is more useful than a threat or a long accusation.

Deadlines and investigation limits

Lost or stolen card

Under the federal baseline for an unauthorized electronic fund transfer, reporting a lost or stolen access device within two business days after learning about the loss can limit liability to $50. Waiting longer can increase potential liability. Your bank or card-network agreement may provide more protection, but check the account terms instead of assuming it does.

If the physical card is still with you but its number or account credentials may have been compromised, report the unauthorized transactions immediately and ask how the bank will assess liability.

The 60-day statement deadline

For many Regulation E errors, notice generally must be given within 60 calendar days after the bank sends the periodic statement that first shows the error. The clock is tied to that statement, not just to the day you happened to notice the transaction.

Send the notice as soon as you find the problem. If you report by phone, ask whether the bank requires written confirmation and when it must receive it.

The investigation period

A bank generally has 10 business days to investigate a Regulation E error after receiving notice. If it needs more time, it generally can extend the investigation by providing provisional credit within the required period. The usual extended period can be up to 45 calendar days.

Special rules can allow longer investigations, including up to 90 days for some point-of-sale debit card transactions, foreign-initiated transfers, and new accounts. New accounts can also have a longer initial period before provisional credit is required. Ask the bank which rule applies to your transaction.

Provisional credit is not necessarily a final refund. After completing the investigation, the bank may reverse it if it determines that no error occurred, subject to the applicable notice requirements. Don't spend temporary credit as though the case is permanently settled.

A merchant dispute may have a different deadline and different evidence requirements. There is no single federal 21-day or 30-day response period for every debit card claim.

How to send the message securely

1. Call the bank promptly. Use the number on the back of the card or a verified statement. Ask the representative to block or replace a compromised card and record the dispute.
2. Ask which written channel counts. A secure bank message or app upload is usually safer than ordinary email. If the bank requires a mailed notice, use the address it provides and keep proof of delivery.
3. Match the wording to the facts. Say whether the issue is an unauthorized transaction, an incorrect transfer, or a problem with an authorized purchase.
4. Attach only useful evidence. Include the statement, receipt, correspondence, delivery information, or return records that support the claim.
5. Record the reference number. Note the date, time, representative's name or ID, and every case number.
6. Watch the account. Look for provisional credit, additional unauthorized activity, fees, and any reversal.
7. Answer follow-up requests. The bank may ask for a signed declaration, more transaction details, or proof that you contacted the merchant.

Never send a PIN, online banking password, or full debit card number by ordinary email. If the bank's secure portal asks for more information, use that portal.

Evidence checklist

Gather what applies before sending the dispute:

• The statement page showing the transaction, with unrelated information redacted.
• A receipt, order confirmation, invoice, or ATM record.
• The exact date, amount, merchant descriptor, and location, if available.
• A timeline showing when you noticed the problem and what you did next.
• Emails, chat messages, cancellation notices, return tracking, or delivery records.
• The merchant's refund policy or written refund promise, when relevant.
• The date and method of every call or message to the bank and merchant.
• A police or internet-crime report, if one was filed or the bank requests it.
• Confirmation that you secured the account, such as a card-blocking notice.

Put attachments in date order and label them clearly. A brief timeline at the start of the message can make the evidence easier to follow.

If the bank denies the claim

A denial is not the end of the record. Request the written explanation and the documents used in the decision. Check whether the bank treated an unauthorized transaction as a merchant dispute, overlooked a transaction date, or lacked a document you can now provide.

Use Template 10 for a focused reconsideration request. Keep the original notice, attachments, provisional-credit notices, denial, and follow-up messages.

If the bank does not address the issue, consider contacting the regulator that supervises the institution. The CFPB complaint portal accepts complaints about many financial companies. The FDIC consumer complaint process explains how to submit a complaint involving an FDIC-supervised bank. The OCC complaint route is for concerns involving national banks and federal savings associations.

A regulator complaint does not replace timely notice to the bank and may not resolve a private dispute about goods or services. If an online scam was involved, report it to the Internet Crime Complaint Center as well.

Mistakes that can weaken a dispute

• Waiting for the merchant before reporting a suspected unauthorized transaction.
• Assuming the 60-day Regulation E deadline applies to every merchant dispute.
• Calling an authorized purchase "fraud" because the goods were late or poor quality.
• Using a guessed email address instead of a verified bank channel.
• Sending the full card number, PIN, password, or Social Security number.
• Omitting the transaction date, amount, or merchant descriptor.
• Listing several unauthorized transactions without identifying each one.
• Treating provisional credit as a final refund.
• Failing to request a case number and written decision.
• Sending original receipts or irreplaceable documents.

FAQ

Can I dispute a debit card charge by email?

You can send written notice by email if your bank accepts that channel for disputes. Call first, ask which method counts, and use the bank's secure message or upload tool when available. If the bank requires a form or mailed notice, follow that instruction.

Is the 60-day deadline measured from the transaction date?

For many Regulation E errors, the period is measured from when the bank sends the statement showing the error. Report the transaction as soon as you find it rather than waiting for the deadline.

Does Regulation E cover a purchase that was never delivered?

Not automatically. An authorized purchase involving non-delivery, poor quality, or a missing refund may be handled under the bank's debit-card or card-network dispute process. Contact the merchant and ask the bank about its specific deadline and evidence requirements.

Does provisional credit mean the dispute was decided in my favor?

No. It is temporary in many investigations. The bank can reverse it after completing its review if it determines that no error occurred, subject to the applicable notice requirements.

What should I do if my dispute is denied?

Request the written reason, supporting documents, and the bank's reconsideration process. Compare the decision with your evidence, submit a concise review request, and consider contacting the appropriate regulator if the bank does not address the issue.

Call the verified number on your card or statement, secure the account if necessary, and send the template that matches what actually happened.