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Send your dispute letter to the card issuer, not the store. That's the first rule. For most U.S. card disputes, the bank or credit union that issued the card handles the claim. Visa and Mastercard don't take consumer letters. Your letter is a formal billing error notice. If you're a merchant, you're writing a chargeback rebuttal to your acquirer instead.

Payment rail decides template, rule, deadline.

What you're disputing Where the letter goes Rule that usually controls Key deadline
Credit card charge Card issuer Fair Credit Billing Act and Regulation Z 60 days after the first statement with the error
Debit or prepaid card charge Bank or credit union Electronic Fund Transfer Act and Regulation E 60 days after the statement with the error
Merchant chargeback Acquirer or payment processor Card network rules and your merchant agreement Varies by network and notice date

Start with the rule that controls your card. The FTC tells consumers to write to the issuer and keep a copy. FTC guide on disputing charges. Credit card billing disputes run under the Fair Credit Billing Act and CFPB Regulation Z, 12 CFR 1026.13. Debit and prepaid card errors fall under the Electronic Fund Transfer Act and CFPB Regulation E, 12 CFR 1005.11. The eCFR version also lists the investigation steps. eCFR 12 CFR 1005.11.

What a chargeback dispute letter has to contain

You don't need legalese. You need a letter that's specific, dated, and easy to investigate. Give the issuer one clear problem and one clear request.

Copy-paste letter for a credit or debit card dispute

Use this as a starting point. Replace every bracket. Keep a copy of the final letter and any attachments.

[Your name] [Your street address] [City, State ZIP] [Email] [Phone] [Date]

[Bank or credit union name] Dispute Department [Address or secure message]

Re: Billing error or unauthorized transaction Account ending in [last 4 digits] Transaction date: [MM/DD/YYYY] Amount: $[amount] Merchant: [merchant name] Transaction ID: [ID if available]

Dear Dispute Department,

I am writing to dispute a charge on my account. I believe this charge is a billing error or an unauthorized transaction under my card agreement and applicable law.

I did not authorize this charge. My card was [lost, stolen, or not present], and I did not give anyone permission to use it. [Or: I was charged twice for one purchase. The receipt shows one transaction. Or: I paid for [item or service], but I did not receive it by the promised date.]

I tried to resolve this with the merchant on [date]. The merchant [refused to refund, did not respond, or sent the wrong item]. I have attached the following records: [list evidence].

I request that you reverse the $[amount] charge and any related fees. Please confirm the correction in writing and send me a case number. Tell me if you need more information.

Sincerely, [Signature] [Your name]

Make the reason match the bank's category

Unauthorized or fraud. Write, "I did not authorize this charge." Don't write, "I don't remember this charge." The first phrase matches what the issuer investigates. The second invites confusion. If your card was lost or stolen, say when you noticed and when you reported it.

Billing error. Name the exact error. That could be a double charge, a wrong amount, a missing credit, or a charge for something you returned. Attach the receipt, return tracking, or cancellation confirmation.

Service not rendered or goods not delivered. Give dates. When did you pay? What did the merchant promise? When did the deadline pass? Show your attempts to contact the merchant. A confirmed reservation number helps. A vague complaint does not.

Evidence that tends to move a dispute forward

Attach copies, not originals. Banks lose paperwork, and you may need originals later. Turns out, the strongest evidence ties one fact to one charge. A statement page shows the charge. An order confirmation shows what you bought. A tracking record shows delivery or non-delivery. A police report helps with identity theft, but it isn't required for every unauthorized charge. Keep the tone flat. Facts age better than outrage.

Merchant chargeback rebuttal letter sample

Merchants don't send this letter to the customer's bank. They respond through the acquirer or payment processor. Visa tells merchants to contact their acquirer for rules and next steps. Visa rules and support. Deadlines and evidence rules come from the card network and your merchant agreement. Check the notice you received.

[Merchant letterhead] [Date]

[Acquirer or processor name] Chargeback Department [Address or portal]

Re: Chargeback case [case number] Transaction date: [MM/DD/YYYY] Amount: $[amount] Customer: [name on order]

Dear Chargeback Department,

We are responding to the chargeback for the transaction listed above. We believe the charge is valid and should not be reversed.

The customer placed order [order number] on [date]. We shipped the item on [date] to the address provided at checkout. The tracking number is [number], and the delivery record shows [delivered or attempted delivery] on [date]. We also have [emails, chat logs, signed delivery receipt, or login records] showing that the customer received the goods or used the service.

Our refund policy states [policy summary]. The customer did not request a refund before filing the chargeback, or the customer requested a refund outside the policy window.

We have attached the following records: [list]. Please let us know if you need more information.

Sincerely, [Name] [Title]

Platform disputes: PayPal, Amazon, and app stores

Start with the platform when the purchase ran through PayPal, Amazon, or an app store. Those systems often ask for the same records a bank wants: order number, messages, tracking, photos, and a short timeline. If you paid with a card, you may also have billing error rights with your card issuer. Don't hide the platform claim from your bank. Tell the issuer that you filed a platform dispute and include the outcome. If the platform refunds you, tell the issuer so the bank doesn't also credit the same charge. Thing is, platform rules and card billing rules can both apply.

If the issuer denies your dispute

Ask for the denial in writing. For credit cards, the issuer must explain why it found no billing error. For debit and prepaid cards, the bank must provide a written explanation after its investigation. Read the explanation for a factual mistake. Maybe it says you authorized the charge. Maybe it says the merchant delivered the item. Respond with evidence that corrects that specific point. You can ask for the documents the issuer used. If the bank still denies the claim, you can file a complaint with the CFPB or your state attorney general. That route is about process and consumer protection, not a guarantee of a refund.

Deadlines, jurisdiction, and what not to assume

These deadlines are U.S. federal rules for billing errors and electronic fund transfer errors. Credit card: 60 days after the first statement with the error. Debit or prepaid card: 60 days after the statement with the error. The issuer then has set response times. The CFPB rules say a credit card issuer must acknowledge your complaint within 30 days unless it fixes the problem, and resolve it within two billing cycles or 90 days, whichever comes first. CFPB Regulation Z, 12 CFR 1026.13. For debit and prepaid, the bank generally must investigate within 10 business days, or up to 45 calendar days if it provisionally credits your account. Some new-account or point-of-sale transactions get longer periods. CFPB Regulation E, 12 CFR 1005.11. A merchant's chargeback deadline is different. It comes from the card network and the merchant agreement, not from the 60-day consumer rule.

To be honest, the 60-day rule is the one people miss. A new calendar year does not reset it. The main deadlines come from long-standing regulations. If you live outside the U.S., your bank may follow different rules. This is written for U.S. consumers.

Questions people ask before they mail the letter

Is a chargeback letter the same as a chargeback?

No. The letter starts the dispute. A chargeback is the card network process that may follow. The issuer decides how to code and pursue it.

Can I send the letter by email or secure message?

Sometimes. The FTC says to write to the issuer. Many banks accept secure messages or online forms. If you use email, keep the confirmation. If the bank rejects email, send a letter and keep a copy. The FTC has sample letters you can adapt.

What if I miss the 60-day deadline?

You can still ask the merchant or issuer for a refund. You may lose the legal billing error process for that charge. Call the issuer anyway. Ask what options remain.

Do I need a police report for fraud?

Not always. It helps with identity theft or a stolen card. For a simple unauthorized charge, a written statement and card records may be enough. The issuer will tell you what it wants.

Pick the template that matches your payment rail. Fill in the facts, attach copies, and send it before the deadline. Then put a reminder on your calendar for the issuer's response window.