If two identical charges appear on your account, contact the card issuer immediately. For most U.S. credit-card billing errors, the federal Fair Credit Billing Act procedure generally requires written notice within 60 days after the statement containing the error was sent.

Some card-network dispute workflows allow a longer period, often around 120 calendar days for duplicate processing. That is not a universal consumer-law deadline, however, and it doesn't guarantee that an issuer will accept a late claim. Debit cards, prepaid cards, and PayPal follow different rules.

Which deadline applies?

The payment method determines the first rule to check:

The safest approach is to use the earliest deadline that might apply. If you're still within 60 days of the statement containing a credit-card error, submit the written dispute now rather than waiting for a possible network deadline.

What counts as a duplicate charge?

A duplicate charge usually means the same purchase was processed or posted more than once. Examples include:

• One order number appearing twice for the same amount
• Two completed card transactions for a single purchase
• A payment being captured twice after a checkout or system error
• A merchant submitting the same transaction more than once

Not every pair of similar entries is a duplicate. Check whether one entry is:

• A pending authorization that later disappears
• A legitimate second order
• A recurring subscription payment
• A tip, tax, currency conversion, or other adjustment
• A charge from a different location or related business with a similar name

A pending authorization can look like a second charge without becoming a second completed transaction. If both entries have posted, save the statement or transaction details before contacting the merchant and issuer.

When does the chargeback clock start?

There isn't one starting date for every payment rail.

Credit cards

For a federal credit-card billing-error claim, the important date is generally when the first statement containing the error was sent to you. It isn't necessarily the day you noticed the problem or the day the transaction was made.

For example, if a statement sent on March 1 shows a duplicate transaction from February 20, the federal 60-day period generally relates to the March statement. Keep the statement date and submit your written notice as soon as possible.

Card-network disputes

Network rules may calculate a duplicate-processing period from a transaction or processing date. The starting point can vary by network, dispute category, region, and transaction type. Delayed delivery or future services may have additional rules.

Your date of discovery doesn't automatically restart the clock. Ask the issuer for the exact last day it will accept the dispute and record the answer, the representative's name, and your case number.

PayPal

PayPal's purchase-protection terms use the payment date and, for some disputes, the delivery or fulfillment date. The 180-day period is not a universal duplicate-chargeback deadline. It applies to eligible PayPal claims under PayPal's terms, and a shorter delivery-related deadline may apply.

How to dispute a duplicate credit-card charge

1. Confirm that both transactions posted. Compare the dates, amounts, merchant descriptor, order number, and transaction status.
2. Save your evidence. Download the statement, take screenshots, and keep the receipt, order confirmation, and any refund messages. The FTC's sample dispute letter recommends reporting errors promptly and keeping your documentation.
3. Contact the merchant. Ask the merchant to reverse the extra transaction and provide a written refund confirmation. This may be faster than a chargeback, but don't wait for the merchant if your issuer's deadline is approaching.
4. Report the error to the issuer. Use the phone number on the back of the card, then follow the issuer's instructions for submitting a written billing-error notice. If you rely on federal billing-error protections, don't assume that a phone call alone preserves every right.
5. Describe the issue accurately. Say that the transaction is a duplicate billing or processing error. If one of the charges was not authorized by you, report that fact separately rather than describing the entire issue as a duplicate.
6. Monitor the account. A temporary credit may be reversed after the investigation. Continue paying the undisputed portion of the balance and tell the issuer if the merchant later refunds one of the charges.

Consumers generally don't need to select a Visa or Mastercard reason code. The issuer maps the facts to the applicable dispute category.

Information to include

Give the issuer:

• Your name and the last four digits of the card
• The merchant name shown on the statement
• The dates and amounts of both transactions
• The statement date
• Order, invoice, authorization, or transaction reference numbers
• A short explanation of why the entries represent one purchase
• Copies of receipts, screenshots, merchant messages, and refund records

Don't send your only original receipt. Redact unrelated account numbers and other private information before uploading documents.

Simple written-dispute wording

You can adapt this language to the issuer's required form:

I am disputing a duplicate billing error on my account ending in [last four digits]. The merchant charged $[amount] on [date] and the same purchase was charged again on [date]. These entries relate to one order, reference [order or transaction number]. Please investigate and remove the duplicate charge. I have enclosed copies of my statement and supporting records.

Send the notice to the address or upload location the issuer identifies for billing disputes, not necessarily the ordinary payment address.

Visa, Mastercard, Discover, and Amex deadlines

The frequently quoted 120-day figure comes from card-network procedures, not from one U.S. law that applies identically to every card.

Visa, Mastercard, and Discover may allow a duplicate-processing dispute within a network window that is often about 120 days. The issuer can require a different customer-facing deadline, and the network's starting date may be based on processing rather than the date the charge appeared in your mobile app.

American Express has its own account and dispute procedures. Amex's consumer guidance says cardmembers may have 60 days from the erroneous bill to file a dispute in the circumstances described there. It also says Amex may take 30 days to confirm receipt and up to two billing cycles, but no more than 90 days, to resolve certain disputes.

The practical rule is simple: don't wait for 120 days because a website or forum lists it as the standard. Ask your issuer for the filing deadline shown for your account.

PayPal, Stripe, and Square

PayPal

PayPal's Purchase Protection process is separate from a chargeback filed through a bank. Under PayPal's Purchase Protection terms, an eligible dispute generally must be opened within 180 days of the payment, or within 30 days of delivery or fulfillment when that deadline is applicable, whichever is sooner.

That rule doesn't promise coverage for every duplicate payment. Open the dispute through PayPal's available transaction categories and read the case deadline. PayPal's general explanation of disputes and claims says a seller may be asked to respond within 10 days, but the date displayed in your case controls.

If the PayPal payment was funded by a credit card, the card issuer may offer a separate billing-error route. Don't seek two refunds for the same loss. Tell PayPal and the issuer about any case or refund already in progress.

Stripe and Square

Stripe and Square are usually payment processors for the merchant, not the consumer's dispute channel. A customer normally contacts the bank or card issuer that issued the card. If the purchase occurred through a marketplace or a platform account, you can also use that platform's support process.

The merchant may see a short response deadline in a Stripe, Square, or acquirer dashboard. That deadline is not a universal consumer filing period, and a processor's duplicate-detection tool doesn't replace your right to report a posted error promptly.

If you're a merchant responding to a duplicate dispute

A merchant's response deadline is a separate clock from the cardholder's filing period. Don't rely on a blanket rule such as 20 days for one network or 45 days for another. The acquirer, processor, or PayPal case notice may provide a shorter deadline, and missing it can cause the dispute to proceed without your evidence.

First determine whether the transactions are genuinely separate. Useful evidence can include:

• Separate order or invoice numbers
• Authorization and capture records
• Checkout timestamps and transaction IDs
• Proof that the customer placed two orders
• Delivery or service records for each purchase
• A refund receipt if one transaction was returned
• Customer communications explaining the transactions

If the duplicate is real, refund the extra payment promptly and retain the refund reference. If the charges were separate purchases, explain that clearly instead of submitting generic authorization logs. Send the evidence through the processor's required channel before the deadline in the notice, and keep a copy of everything submitted.

If the issuer denies the dispute

A denial doesn't always mean the transactions were correctly matched. Ask the issuer for:

• The reason for the denial
• The transaction records it relied on
• The deadline for requesting a review
• The exact evidence needed for reconsideration

Resubmit a concise timeline showing that the same order, service, or payment was posted twice. Include the statement and merchant correspondence, and identify which charge remains unpaid if the merchant issued a partial refund.

If the first deadline has passed, contact the issuer anyway. It may have an internal exception or another dispute route, but an issuer is not required to treat a late claim as timely merely because a network window is sometimes longer.

Common mistakes to avoid

• Waiting for the merchant: A refund request doesn't stop the issuer's deadline.
• Disputing a pending hold: First confirm whether both entries posted.
• Calling it fraud when you recognize the purchase: Use the duplicate or billing-error description unless one charge was actually unauthorized.
• Assuming 120 days is guaranteed: Network time limits vary and don't replace issuer instructions.
• Ignoring the statement date: The federal credit-card billing-error period generally relates to the statement containing the error.
• Disputing the full amount after a refund: Report only the remaining loss.
• Treating PayPal protection as a bank chargeback: PayPal's terms and the card issuer's rules are separate.
• Submitting originals: Keep originals and provide copies or secure uploads.

Frequently asked questions

Is 120 days the legal deadline for a duplicate chargeback?

No. For a U.S. credit-card billing error, the federal process generally uses a 60-day written-notice period tied to the statement containing the error. A card network may provide a longer dispute window, but that is a separate network procedure.

Does the 60-day period start on the transaction date?

Usually not for the federal credit-card billing-error process. It generally starts when the first statement containing the error was sent. Other network or platform procedures can use different dates.

Can I dispute a duplicate charge after 120 days?

You can still contact the issuer, especially if a merchant refund failed or the charge was unauthorized, but acceptance isn't guaranteed. Explain the delay and ask whether another procedure applies.

What if one of the two charges is still pending?

Save the details and watch for the pending authorization to disappear. If both charges post, report the duplicate. If the statement already contains the error, don't wait past the applicable credit-card deadline while monitoring it.

What if the merchant promises a refund?

Get the promise in writing and monitor the account. If the refund doesn't arrive before the issuer's deadline, file the dispute and tell the issuer about the merchant's promise. If the refund posts later, update the case and avoid recovering the same amount twice.

This information is for U.S. consumers and is general information, not legal advice. Check the statement, account agreement, and dispute notice for the deadline that applies to your payment.