How to Dispute a Transaction: Credit Cards, Debit Cards, and P2P Apps

To dispute a transaction, contact the merchant first, then file a formal dispute with your bank if that does not fix the problem. How you file, how long the bank has to respond, and how much you could be on the hook for all depend on whether the charge hit a credit card or a debit card. Credit card disputes fall under the Fair Credit Billing Act, which gives you 60 days from the statement date to send a written notice.¹ Debit card disputes fall under Regulation E, where oral notice is allowed and speed directly limits your liability.²

Start With the Merchant

For most disputes — duplicate charges, subscriptions that were supposed to be canceled, orders that never arrived — the merchant is the fastest route to a refund. A phone call or email often ends the problem before the bank ever gets involved.

Contacting the merchant is not just practical. If your credit card dispute is about the quality of goods or services (as opposed to a straightforward billing error), federal law requires a good-faith attempt to resolve the issue with the seller before you can push it up to the card issuer.³ No formal procedure is required, but keep a record of the attempt. Your bank will want to see it.

Gather Your Documentation

Before you file anything with the bank, pull together the evidence that shows the charge is wrong:

The exact date, dollar amount, and merchant name as they appear on your statement.
Receipts, order confirmations, or shipping tracking numbers for what you were supposed to receive.
Return tracking numbers and proof the merchant received returned goods.
Screenshots or confirmation emails showing you canceled a subscription.
Emails, chat transcripts, or notes from calls with the merchant.

Documentation matters because the process is not one-sided. When you dispute a charge, the merchant gets an opportunity to respond with its own evidence — delivery confirmations, signed receipts, the return policy you agreed to. If the merchant’s evidence is stronger than yours, the bank can deny the dispute. Banks also pause investigations while waiting for information from you, and those pauses can eat into your deadlines.

File a Credit Card Dispute

Under the Fair Credit Billing Act, the dispute must be in writing. Your notice needs your name and account number, a description of the charge, the dollar amount, and the reason you believe it is an error.¹ The notice must reach the issuer within 60 days of the date the issuer sent the statement containing the disputed charge.⁴

Send it to the address the issuer designates for billing inquiries, which is not the payment address. Check the back of your card or your statement for a “billing inquiries” or “billing disputes” address. Most issuers now accept disputes through their online portal or app, which satisfies the written notice requirement. If you mail a letter, use certified mail with return receipt so you can prove it arrived in time. Save a copy of everything you send. If you file online, save the confirmation as a PDF.

File a Debit Card Dispute

For debit card transactions and other electronic transfers, Regulation E lets you notify the bank either orally or in writing.⁵ A call to customer service can start the investigation. The bank can require you to follow up in writing within 10 business days; if it does and you don’t, the bank is not required to provisionally credit your account during a longer investigation.

Report as soon as you spot the problem. Unlike credit cards, your liability for unauthorized debit card charges increases the longer you wait.

What Happens After You File

Once the dispute is in, federal law sets specific windows for the bank’s response.

Credit Cards

The issuer must acknowledge your dispute in writing within 30 days of receiving it. It then has two full billing cycles, and no more than 90 days, to complete the investigation and either correct the error or explain why the charge stands.⁴

During the investigation, most issuers apply a provisional credit for the disputed amount. You do not have to pay the disputed portion, and any related finance charges or late fees on that portion are suspended.⁴ Pay the undisputed portion of your bill on time; skipping the whole payment because of one bad charge can trigger late fees on everything else.

Debit Cards

Debit investigations run faster. The bank has 10 business days from your notice to investigate and determine whether an error occurred. If it confirms one, it must correct it within one business day and report back within three business days.⁵

The bank can extend the investigation to 45 days, but only if it provisionally credits your account within the initial 10 business days and gives you full access to those funds while it keeps looking. For point-of-sale debit transactions, the extended window is 90 days.⁵ If the bank ultimately finds no error, it can reverse the provisional credit after giving you at least three business days’ notice.

How Much You Could Owe for Unauthorized Charges

If someone else used your card, your maximum liability depends on the account type and, for debit cards, how fast you reported it.

On a credit card, your liability for unauthorized charges is capped at $50 regardless of when you report it, provided the issuer gave you notice of that potential liability and a way to report unauthorized use.⁶ Most major issuers voluntarily go further with zero-liability policies, but $50 is the legal floor.

On a debit card, liability rises in tiers:

Report within 2 business days of learning of the loss or theft, and you owe no more than $50, or the amount of unauthorized transfers before you notified the bank, whichever is less.²
Report between 2 and 60 days, and the cap rises to $500, which includes later unauthorized transfers the bank can show would not have happened if you had reported sooner.²
Wait more than 60 days from the statement date, and you can be liable for the full amount of unauthorized transfers that occur after that 60-day window and before you notify the bank.²

A stolen credit card carries a maximum $50 risk. A stolen debit card that goes unreported for more than 60 days can drain the whole checking account with no legal obligation for the bank to give the money back. Review your statements often.

Your Credit and Payments While a Dispute Is Pending

Filing a credit card dispute triggers protections that last through the investigation. The issuer cannot report the disputed amount as delinquent to any credit bureau while the case is open, and it cannot threaten to.⁷ It can note the amount as “in dispute,” but that notation on its own does not damage your score.

The issuer also cannot accelerate the debt, restrict the account, or close it solely because you disputed a charge in good faith.⁴ These protections cover only the disputed amount; any other unpaid balances can still be reported and collected normally.

If autopay is enrolled, the issuer must stop pulling the disputed amount from your bank account as long as you filed the dispute at least three business days before the next scheduled payment.⁴

When the Problem Is the Quality, Not the Charge

A billing error is different from a complaint about what you received. If the item arrived but was not what you expected, or the service was performed poorly, that falls under a separate provision called “claims and defenses.”⁸

You can withhold payment from your credit card issuer for a purchase you are unsatisfied with, but only if all three conditions are met:

The $50 and 100-mile limits fall away when the issuer is also the seller, controls the seller, or solicited the transaction through a mail or online offer.⁸ The most you can dispute this way is whatever remains outstanding on that transaction when you notify the issuer, so paying the charge off in full before raising the claim can limit your rights.

This provision applies to credit cards only. Debit card quality complaints usually depend on the merchant’s return policy or on voluntary protections offered by your bank or the card network.

Zelle, Venmo, and Cash App Transactions

Unauthorized transactions through peer-to-peer services are still covered by federal law. The CFPB has confirmed that P2P providers qualify as “financial institutions” under Regulation E when they hold a consumer’s account or issue an access device and agree to provide electronic fund transfer services.⁹ They owe you the same 10-business-day investigation, the same possible 45-day extension, and provisional credit on the same terms as a traditional bank.

For services like Zelle that run through your bank rather than holding a separate balance, your bank is the financial institution responsible for the investigation. File with the bank directly rather than with the app’s customer service.

One boundary matters here: Regulation E covers unauthorized transfers, meaning transactions someone else made without your permission and from which you received no benefit. If you voluntarily sent money to someone who turned out to be a scammer, the transfer was technically authorized by you, even though the authorization was obtained by fraud. Some banks and P2P providers have expanded voluntary fraud protections in recent years, but federal law does not guarantee reimbursement for payments you sent yourself.

If the Bank Denies Your Dispute

When a bank denies a dispute, it must send a written explanation of why and, on request, copies of the documents it relied on.¹ Any provisional credit applied during the investigation gets reversed.

You still have options. If you have new evidence that was not in your first submission, ask the bank to reopen the case. You can file a complaint with the Consumer Financial Protection Bureau, which oversees both Regulation Z for credit cards and Regulation E for debit cards. For larger amounts, a consumer protection attorney can tell you whether your state offers protections beyond federal law.

1
Office of the Law Revision Counsel. 15 USC 1666 – Correction of Billing Errors
2
eCFR. 12 CFR 1005.6 – Liability of Consumer for Unauthorized Transfers
3
Consumer Financial Protection Bureau. 12 CFR Part 1026 (Regulation Z) – 1026.12 Special Credit Card Provisions
4
Consumer Financial Protection Bureau. 12 CFR Part 1026 (Regulation Z) – 1026.13 Billing Error Resolution
5
eCFR. 12 CFR 1005.11 – Procedures for Resolving Errors
6
Office of the Law Revision Counsel. 15 USC 1643 – Liability of Holder of Credit Card
7
eCFR. 12 CFR 1026.13 – Billing Error Resolution
8
Office of the Law Revision Counsel. 15 USC 1666i – Assertion by Cardholder Against Card Issuer of Claims and Defenses Arising Out of Credit Card Transaction
9
Consumer Financial Protection Bureau. Electronic Fund Transfers FAQs