If one purchase appears twice as a posted credit-card transaction, ask the merchant to refund the extra charge and notify your card issuer about a billing error. For a U.S. credit card, your written notice generally must reach the issuer within 60 days after the first statement showing the error was sent. The clock usually starts with that statement, not the purchase date.

Don't wait for the merchant if the 60-day deadline is close. Debit cards, ACH withdrawals, PayPal payments, and transactions showing Stripe or Square use different dispute routes.

This is general U.S. consumer information, not legal advice. Your card agreement, bank procedures, and the payment platform's current terms may add requirements.

Check whether both charges really settled

Two entries with the same merchant and amount aren't necessarily two completed payments. First check the status of each entry, then compare the charges with your receipt and order history.

An issuer may not investigate an authorization that never settles. A dispute is generally easier to document once both charges are posted.

Use the process for the payment method

"Chargeback" is often used as a general term, but the route depends on where the money came from.

Describe a recognized double charge as duplicate billing, duplicate processing, or a billing error. Don't label it an unauthorized transaction unless you genuinely didn't authorize the purchase. The reason you select can affect how the provider investigates the claim.

Credit-card duplicate charges and the 60-day deadline

The FTC's guidance on disputing credit-card billing errors says a written dispute should reach the issuer within 60 days after the first bill containing the error was sent.

Send the notice to the issuer's address for billing inquiries or disputes. That address may be different from the address used for payments. An issuer may also accept a dispute through its app, website, or by telephone, but written notice is the safer way to use the federal billing-error procedure.

Include enough information for the issuer to identify the account and compare the two entries:

• Your name and account number, using only the information needed to identify the account.
• The merchant name, transaction dates, and amounts.
• A clear statement that one purchase was charged twice.
• The amount of the duplicate charge you want credited.
• Copies of the statement, receipt, order confirmation, and relevant merchant correspondence.
• A request that the issuer investigate and correct the duplicate charge.

Keep a copy of the letter and proof of delivery. The FTC says the issuer generally must acknowledge a written billing-error notice within 30 days unless it resolves the matter sooner. It generally must resolve the dispute within two billing cycles, and no later than 90 days after receiving the notice.

Some issuers provide a temporary credit during the investigation. That credit can be reversed. Continue paying the undisputed part of the balance and follow the issuer's written instructions about the disputed amount.

Debit cards and ACH withdrawals

A debit-card purchase and an ACH withdrawal take money from a deposit account, so they don't use the credit-card billing-error letter process. Tell the bank as soon as you notice the duplicate and ask which electronic-transfer error procedure applies.

For a consumer account covered by Regulation E, an erroneous electronic transfer may include a duplicate debit. The federal process generally uses a 60-day period after the statement showing the error was sent, and a bank generally has 10 business days to investigate after receiving notice. If it needs more time, it may provide temporary credit while continuing the investigation, subject to regulatory exceptions. Report the problem promptly even when you believe you are within that period.

For an ACH duplicate, ask the bank to:

1. Identify both entries as duplicate electronic debits.
2. Compare the ACH trace information, originator, amount, and settlement date.
3. Explain whether it will return one debit or open a formal error investigation.
4. Confirm the deadline and documents it needs from you.

Regulation E protections generally concern consumer accounts. A business checking account can have different rights and deadlines under its account agreement and commercial procedures. Report a business-account duplicate immediately.

If the debit is part of a recurring authorization, ask how to stop future debits as well as recover the duplicate. Stopping future payments doesn't automatically return money that has already left the account.

Merchant refund or issuer dispute?

A merchant refund is often the quickest fix when the seller responds. Give the merchant both transaction details and ask it to refund only the extra charge. Request written confirmation identifying the transaction being refunded and the expected credit date.

Contact the issuer or bank as well when:

• Both charges have posted and the merchant won't respond.
• The merchant refuses to correct an obvious duplicate.
• You can't reach the merchant.
• The applicable notice deadline is approaching.
• The merchant says it issued a refund, but the credit hasn't appeared.

You can contact the merchant first, but that conversation doesn't extend the issuer's deadline. Tell the issuer if the merchant later refunds the charge. Otherwise, two separate processes could produce two credits for the same transaction.

A practical dispute checklist

1. Save the account records

Download or print the statement page showing both charges. Record:

• Exact amounts and dates.
• The merchant descriptor as it appears on the statement.
• Transaction or reference numbers.
• The last four digits of the card or account.
• The order number, receipt, and fulfillment details.

Don't send your full card number, security code, online-banking password, or other unnecessary sensitive information.

2. Write to the merchant

Email, a contact form, or the merchant's support channel gives you a record. Explain that you authorized one purchase but have two posted charges.

A short message is enough:

I authorized one purchase on [date] for [amount]. My account shows two posted charges from [merchant]. Please confirm which transaction is duplicated and refund the extra charge. I have attached the receipt and statement entries.

Save your message, the response, and any refund confirmation.

3. Notify the issuer or bank

Use the closest available reason, such as duplicate billing or billing error. Report both transactions, not only the one you want removed, so the investigator can compare them.

For a credit card, send written notice to the billing-inquiries address on the statement. For a debit card or ACH transaction, use the bank's electronic-transfer error process and ask whether it requires a form or additional written statement.

4. Send focused evidence

The clearest evidence usually shows one purchase and two settled charges. Attach:

• The statement page showing both posted transactions.
• The single receipt or order confirmation.
• Order history showing one order, if available.
• Merchant messages acknowledging the duplicate.
• A short timeline showing when the payment was submitted and when each charge posted.
• Proof of a promised refund that hasn't arrived.

Use copies and keep the originals. A short explanation in date order is more useful than a collection of unrelated screenshots.

5. Track the case

Keep the confirmation number and submission date. Watch for requests from the issuer, a temporary credit, a merchant refund, or a decision letter.

Respond by the stated deadline. If the merchant claims the entries were two orders, a tip, a deposit, an installment, or separate services, address that specific explanation rather than repeating that the charges look alike.

PayPal duplicate payments

PayPal has its own dispute process. Its deadline may not match a card or bank deadline, so check the current deadline shown in your PayPal account and the applicable user terms instead of relying on a generic 120-day or 180-day claim.

When PayPal shows two payments for one purchase:

1. Check whether both payments are completed or whether one is still pending.
2. Contact the seller or open the applicable PayPal dispute.
3. If a credit or debit card funded the payment, ask the card issuer or bank whether its process also applies.
4. Tell each provider about any dispute or refund already opened.
5. Don't seek two recoveries for the same transaction.

If PayPal shows one payment but your card statement shows two similar entries, ask the merchant and PayPal whether one card entry is a pending authorization or a duplicated settlement.

Stripe and Square descriptors

Stripe and Square commonly process payments for merchants. A consumer generally doesn't file a card chargeback through the merchant's Stripe or Square dashboard. Start with the merchant, then contact the bank or card issuer connected to the payment account if both charges remain posted.

A statement descriptor containing "Stripe" or "Square" may not clearly identify the seller. Ask the issuer for the merchant information it can provide before treating a recognized purchase as fraud.

For a merchant refund request, provide the date, amount, receipt, and the last four digits shown on the receipt. Never send card security information by email.

Why a duplicate-charge dispute may be denied

Two similar entries don't prove that the same payment settled twice. A dispute may be denied when:

• One entry was pending and later disappeared.
• The merchant documents two separate orders.
• One entry was a legitimate tip, deposit, installment, or adjustment.
• The merchant already issued a refund.
• The issuer received a credit-card notice after the federal 60-day period.
• The evidence didn't identify both transactions or explain why only one purchase was authorized.

Ask for the decision and reason in writing. Compare the explanation with your statement and receipt, then request reconsideration with any missing evidence. If a U.S. issuer mishandled a timely written credit-card billing dispute, you can consider a complaint to the appropriate financial regulator. A complaint doesn't replace the original dispute deadline.

Do you need a Visa or Mastercard reason code?

Usually not. Tell the issuer exactly what happened and let it select the applicable network category. Network processing windows can vary, and a generic claim that every duplicate dispute has 120 days is not a safe substitute for the federal credit-card deadline.

Start by downloading the statement. If both entries are posted, send the merchant request and the appropriate issuer or bank notice promptly, even if the merchant has promised to look into it.