A chargeback asks your card issuer or payment provider to reverse a transaction through the payment system. It isn't the same as a merchant refund, and it isn't automatic. The merchant can challenge the claim, the issuer can deny it, and a temporary credit can later be reversed.

Before filing, figure out how you paid. Credit cards, debit cards, prepaid cards, and PayPal don't follow the same dispute track. In 2026, the practical starting point is still the payment rail, the factual reason for the dispute, and the deadline tied to that reason.

Start with the payment rail

A refund comes from the seller. A chargeback comes from the issuer and payment network after you report a dispute. Contacting the seller can be faster, but don't wait if the transaction is unauthorized or a filing deadline is close.

The Federal Trade Commission's sample dispute letter recommends reporting problems promptly, contacting the seller when appropriate, keeping original documents, and listing the evidence you enclose.

When a chargeback fits

Most valid disputes fall into one of these factual categories:

• Unauthorized transaction: You didn't authorize the purchase, or someone used your card details without permission.
• Incorrect amount: The merchant charged more than agreed or charged you twice for the same transaction.
• Goods or services not received: The delivery or service date passed, and you didn't get what you paid for.
• Goods or services not as described: The item or service is materially different from the advertisement, order, or contract.
• Missing refund or credit: The merchant promised a refund or credit, but it never posted.
• Recurring charge after cancellation: You canceled under the merchant's terms and can show that a later charge still went through.

Don't stretch a complaint into fraud. A merchant refusing a refund doesn't make the original charge unauthorized. If you recognized the purchase but the item was defective, use the product or service category and explain the difference.

Deadlines that actually matter

Don't assume every chargeback has a 120-day deadline. That period appears in some card-network procedures, but the real window can depend on the reason, expected delivery date, refund date, account terms, and issuer process.

For a qualifying U.S. credit-card billing error, send written notice to the billing inquiries address on your statement, not automatically the payment address. A call or online form may start the issuer's internal process, but written notice is the safer way to preserve the federal billing-error path.

Consumer guidance from Experian's explanation of credit-card dispute timing and American Express' dispute guidance describes written acknowledgment within 30 days and completion within two billing cycles, with a maximum of 90 days for the credit-card billing-error process. Network reviews or appeals can follow a separate schedule.

How to file the dispute

1. Verify the transaction

Write down:

• Merchant name as it appears on the statement
• Transaction date and posting date
• Exact amount and currency
• Order, invoice, or confirmation number
• Last four digits of the account
• Expected delivery or service date
• Any related refund, cancellation, or return date

Unfamiliar merchant names can be parent companies, payment processors, or billing descriptors. Check those first. Ask authorized users or household members before calling a recognizable purchase unauthorized.

2. Secure the account if fraud is possible

Call the number on the back of the card or use the issuer's secure app. Ask whether the card should be locked, replaced, or monitored. If the account or PayPal profile may have been accessed, change the password and turn on multifactor authentication.

Review recent and pending transactions for related activity. Report each unauthorized transaction you identify, but keep unrelated charges separate. A vague bundle of disputed items is harder to investigate.

3. Contact the merchant when it makes sense

For delivery, quality, duplicate-charge, subscription, or refund problems, send a clear written request. Include the order number, problem, date, and the remedy you want. Save emails, chat transcripts, case numbers, return instructions, and any refund promise.

Give the merchant a reasonable chance to respond only if your deadline allows it. You don't need to keep negotiating with a suspicious seller. If the charge is unauthorized, contact the issuer first. Some issuer or network procedures may ask what you did to resolve the issue, so document any safe and reasonable attempt.

4. Build an evidence file that matches the reason

Use copies, not irreplaceable originals. Put documents in date order and highlight the facts that prove the specific dispute.

A police report isn't automatically required for every unauthorized transaction. Provide one if the issuer asks for it or if it is relevant to an identity-theft report. Never alter screenshots, receipts, tracking records, or correspondence.

5. Submit the dispute to the issuer

Use the issuer's online dispute tool, mobile app, or phone channel. Select the most accurate category and provide:

1. Transaction date, amount, and merchant.
2. A short factual description of what happened.
3. Date and result of any merchant contact.
4. Exact amount you want corrected.
5. Numbered list of attached documents.
6. Expected delivery, cancellation, or refund date.

The issuer usually assigns the formal card-network reason code. Don't copy a code from an old Visa or Mastercard table unless the issuer gave you that code.

If you are relying on the U.S. credit-card billing-error process, send a signed letter to the billing inquiries address as well. Keep a copy and proof of receipt.

6. Ask about temporary credit and payment instructions

Some issuers provide provisional credit while they investigate. That credit is temporary and can be reversed if the decision goes against you. Keep the money available until the case is final.

Ask how to handle the disputed amount while the investigation is open. Continue paying amounts that are not in dispute. A missed payment on an undisputed balance can create fees or credit problems even while another transaction is under review.

7. Track the case

Record the dispute number, submission date, uploaded files, names of representatives, and every follow-up deadline. If the issuer asks for clarification, respond promptly.

A merchant response isn't automatically a decision against you. If the issuer shares it, review it and correct factual errors with a concise explanation and supporting documents.

Chargeback dispute letter template

Send the letter to the address shown for billing inquiries on your statement. Use the issuer's secure upload or messaging system for sensitive attachments, and don't include a full card number in ordinary email.

[Date]

Billing Inquiries Department

[Issuer name]

[Billing inquiries address]

Re: Billing error dispute for [merchant], [amount], [transaction date]

Account: [last four digits only]

I am writing to dispute the [amount] charge posted on [date] from [merchant].

The reason for my dispute is: [unauthorized transaction, incorrect amount, duplicate charge, goods not received, goods not as described, refund not posted, or other accurate reason].

The relevant facts are:

[Explain what happened in date order. Include the expected delivery, cancellation, return, or refund date if relevant.]

I contacted the merchant on [date] by [email, phone, chat, or other method]. The result was:

[Describe the response or state that the merchant did not respond.]

I request an investigation and correction of the disputed amount. Copies of the following documents are enclosed:

1. [Statement or transaction record]
2. [Receipt or order confirmation]
3. [Merchant correspondence]
4. [Delivery, return, cancellation, or refund evidence]

Please send me the investigation result and any documents supporting the decision.

Sincerely,

[Name]

[Mailing address]

[Phone or secure contact method]

For a debit card, prepaid card, or PayPal case, adapt the letter to the provider's required process. A credit-card billing-error template doesn't automatically establish rights under another payment system.

What happens after you submit

The usual sequence is:

1. Intake: The issuer confirms the transaction and classifies the issue.
2. Initial review: It may ask for more information or provide temporary credit.
3. Merchant response: The merchant or its payment processor can provide delivery records, authorization data, refund records, terms, or communications.
4. Issuer decision: The issuer decides whether to keep the credit, reverse it, or correct part of the charge.
5. Reconsideration or appeal: If available, you respond to the stated reason for denial by the deadline in the decision notice.

Timing varies. A bank's "30 to 45 days" estimate isn't a universal rule, and a network appeal can have its own deadline. For a U.S. credit-card billing error, ask why the issuer needs more time if it hasn't acknowledged or resolved your written dispute within the general periods described above.

If the issuer denies the claim, request:

• The specific reason for the denial
• The documents or merchant evidence it relied on
• The applicable account or transaction terms
• The deadline and method for reconsideration
• Whether the decision was based on federal billing-error rules, card-network rules, or the issuer's own policy

Then write a short rebuttal. Address each reason separately, correct factual mistakes, and attach only relevant new evidence. Repeating "I want a chargeback" without answering the denial is unlikely to change the result.

Visa, Mastercard, American Express, and reason codes

Consumers generally file through the card issuer, not directly with Visa or Mastercard. The issuer's agreement with the network determines which dispute categories and deadlines it can use. Visa, Mastercard, and American Express may use different names and codes for similar problems, and those systems can change.

For that reason:

• Choose the factual dispute category in your issuer's form.
• Don't claim a transaction was unauthorized if you authorized it but received a defective item.
• Ask the issuer for the reason code or category if you need to answer a denial.
• Keep the dispute limited to the amount and problem you can document.
• Don't rely on a "full list" of codes from an old blog as a filing guide.

If your card is issued directly by American Express, follow the dispute channel in your account. American Express' consumer guidance emphasizes keeping records such as cancellation emails and may involve the business in reviewing the claim.

Special situations

Unauthorized credit or debit transactions

Report the charge immediately. Credit-card and debit-card protections aren't identical, and debit-card losses can affect the money available in your bank account while the claim is pending. Secure the account, review related transactions, and ask the bank what notice and documents it requires.

Non-delivery

Show the promised delivery date, not only the order date. For a preorder or delayed service, the relevant network deadline may depend on when delivery or performance was expected. Give the issuer the tracking result and your attempts to obtain a resolution.

Defective or misrepresented goods

Compare the actual item with the listing, contract, or receipt. Photos and a return record are more useful than a general statement that the product was disappointing. Explain the material difference and the remedy you requested.

Subscriptions and recurring billing

A cancellation email, confirmation screen, or support ticket can establish when you canceled. If the merchant promised a refund, dispute the missing credit rather than describing the original purchase as unauthorized.

PayPal payments

PayPal's internal dispute process is separate from a card issuer's chargeback process. Open the transaction in PayPal and follow the available problem category and deadline. If the payment was funded by a credit card and PayPal doesn't resolve it, ask the issuer whether a card dispute is available. Tell both providers about the other case, and don't accept or seek duplicate refunds without reporting the first recovery.

Mistakes that weaken a dispute

• Waiting until the deadline while repeatedly negotiating with the merchant
• Filing only by phone when a written credit-card notice is needed
• Calling a recognized merchant dispute "fraud"
• Disputing the full purchase when only part of it is wrong
• Omitting the merchant's refund, return, or cancellation policy
• Sending a large, disorganized file without a timeline
• Ignoring requests from the issuer
• Spending provisional credit before the decision is final
• Filing overlapping PayPal and card claims without disclosure
• Altering or exaggerating evidence

Quick answers

Do I have to contact the merchant before filing?

Not in every situation. It's often useful for non-delivery, quality, refund, and subscription disputes, but report suspected fraud to the issuer promptly. Never let a merchant-contact attempt cause you to miss a filing deadline.

Can I charge back a debit-card purchase?

You can report a debit-card dispute to the bank, but the process and protections differ from a credit-card billing error. Contact the bank immediately and follow its electronic-transfer dispute procedure rather than assuming the credit-card 60-day rule applies.

Does provisional credit mean I won?

No. Provisional credit is temporary and may be removed after the issuer reviews the merchant's response. Keep the funds available and wait for the final decision.

What if the issuer denies my chargeback?

Request the written reason, supporting documents, and appeal deadline. Submit a focused rebuttal with relevant evidence. If the issuer appears to have ignored a timely written billing-error notice or mishandled the investigation, escalate through a supervisor and consider a complaint to the Consumer Financial Protection Bureau or another appropriate consumer-protection regulator.

Can a chargeback hurt my credit?

Submitting a dispute isn't the same as missing a payment. Credit consequences can arise if you stop paying an undisputed balance or if the issuer reverses temporary credit and the resulting amount becomes overdue. Ask the issuer for written payment instructions while the case is open.

This is general information for U.S. consumers, not legal advice. Save the statement, write a dated timeline, check the deadline for your payment method, and open the dispute through the provider's secure channel before the window closes.