To dispute a purchase means asking your bank or card issuer to reverse a charge on your account because it was unauthorized, wrong, or for something you never received. What that means to dispute a purchase actually sets in motion is a chargeback: a formal reversal that pulls funds from the merchant’s bank through the card network and sends them back to you, governed by federal law and by the network’s own rulebook. Two statutes set the floor for your rights: the Fair Credit Billing Act for credit cards and the Electronic Fund Transfer Act for debit cards. They do not give you the same protection, and that gap is the single most important thing to understand before you file.
How a Chargeback Actually Works
Your bank does not simply hand you cash back. When you file, it opens a chargeback through the card network (Visa, Mastercard, and the rest), which pulls the disputed funds from the merchant’s bank and returns them to your account. Two banks are always involved: yours (the issuing bank) and the merchant’s (the acquiring bank). The card network enforces a standardized set of rules, reason codes, and deadlines that both sides have to follow.
The system exists because you and the merchant have no direct financial relationship. Your bank extended you credit or gave you access to your deposit account; the merchant’s bank agreed to accept card payments. When something goes wrong, the network’s rules decide who eats the loss. Federal law then sits on top of those rules and sets minimum protections the bank owes you.
When You Actually Have Grounds to Dispute
A dispute is not a substitute for asking the merchant for a refund. It is an escalation path for when the merchant won’t cooperate or when fraud is involved. Your issuer will ask you to pick a reason code and back it up with evidence.
Unauthorized Transactions
The cleanest disputes involve charges you never made. Stolen card numbers used online, transactions after a card was lost, account takeover where someone got hold of your credentials. You need to confirm you don’t recognize the merchant and had no part in the transaction.
Billing and Processing Errors
These are mistakes in how the charge was recorded. Double charges, wrong amounts, a promised refund that never posted, a transaction where the authorization expired before the charge settled. A receipt showing the correct amount or a screenshot of duplicate charges usually resolves these fast.
Goods or Services Not Delivered or Defective
You paid and nothing arrived, or what arrived was materially different from what the merchant described. These carry the heaviest evidence burden because they come down to your word against the merchant’s. Keep shipping confirmations, product photos, listing screenshots, and any message where the merchant acknowledged the problem. Buyer’s remorse doesn’t qualify.
Subscriptions and Recurring Charges
Recurring billing complaints are among the fastest-growing dispute categories. The Restore Online Shoppers’ Confidence Act requires that any business charging you through a subscription clearly disclose the terms before taking your billing information, get your express informed consent, and give you a simple way to cancel.1Office of the Law Revision Counsel. 15 USC 8403 – Negative Option Marketing on the Internet The FTC’s click-to-cancel rule adds that cancellation has to be at least as easy as signing up.2Federal Trade Commission. Federal Trade Commission Announces Final Click-to-Cancel Rule Charges that continued after you cancelled, enrollments you never clearly agreed to, and charges that hit before a free trial ended are all legitimate grounds. Document every cancellation attempt before you file.
Credit Card vs. Debit Card: The Protection Gap
This is where most people miscalculate. Credit and debit disputes run under different federal statutes, and the liability rules are not close to equal.
Credit Card Protections
Credit card disputes fall under the Fair Credit Billing Act, implemented through Regulation Z.3Federal Trade Commission. Fair Credit Billing Act Your maximum liability for unauthorized use is $50, and even that applies only if the issuer met specific notice conditions.4Office of the Law Revision Counsel. 15 USC 1643 – Liability of Holder of Credit Card In practice, every major card network runs a zero-liability policy that eliminates that $50 for most unauthorized transactions.5Visa. Visa Zero Liability Policy
For billing errors (double charges, wrong amounts, undelivered goods) you have to send written notice to the issuer within 60 days of the statement date that reflects the error.6Consumer Financial Protection Bureau. 12 CFR 1026.13 – Billing Error Resolution The notice has to identify your account, describe the error, and explain why you think it’s wrong. Most issuers accept online or phone disputes, but the statute defines a billing error notice as a written one. If you want the full statutory protection, put it in writing.
Debit Card Protections
Debit disputes fall under the Electronic Fund Transfer Act and Regulation E.7Consumer Financial Protection Bureau. 12 CFR Part 1005 – Electronic Fund Transfers (Regulation E) Liability is tiered by how fast you report:
- Report within 2 business days: your liability caps at $50 or the amount of unauthorized transfers before you notified the bank, whichever is less.
- Report after 2 business days but within 60 days of the statement: liability jumps to $500 or the total unauthorized transfers in that window, whichever is less.
- Report after 60 days: you can lose everything. The bank has no obligation to reimburse unauthorized transfers occurring after the 60-day window closed if it can show those transfers wouldn’t have happened had you reported on time.
Those tiers come straight from the statute and Regulation E.8Office of the Law Revision Counsel. 15 USC 1693g – Consumer Liability9eCFR. 12 CFR 1005.6 – Liability of Consumer for Unauthorized Transfers If your debit card is compromised, report it immediately. Waiting a few days can multiply your exposure tenfold. Visa’s zero-liability policy does extend to debit transactions on its network, but that’s a voluntary network policy with its own conditions, not a federal guarantee.5Visa. Visa Zero Liability Policy
How to File
Start with the merchant. Call, email, or use their support channel to ask for a refund or correction. Your bank will ask whether you tried, and some network rules require it. Save everything: dates, names, chat screenshots, email threads.
If the merchant refuses, ignores you, or has vanished, contact your card issuer. Most banks let you open disputes through their app, website, or by phone. You’ll need the merchant name, transaction date, amount, and a description of the problem.
For credit card billing errors, the FCBA’s 60-day clock starts when the issuer sends the statement containing the error, not when you notice it.6Consumer Financial Protection Bureau. 12 CFR 1026.13 – Billing Error Resolution If you dispute online or by phone, also send written notice to the address your issuer lists for billing disputes; it is often different from the payment address. For debit cards, notify the bank as soon as possible so you stay inside the 2-business-day window.9eCFR. 12 CFR 1005.6 – Liability of Consumer for Unauthorized Transfers
Gather evidence before you file. Receipts, order confirmations, delivery tracking, photos of defective goods, screenshots of merchant messages. Weak evidence is the most common reason disputes get denied.
What Happens After You File
Provisional Credit and Timelines
For debit disputes, your bank has to either finish investigating within 10 business days or provisionally credit your account and take up to 45 days to wrap up.10eCFR. 12 CFR 1005.11 – Procedures for Resolving Errors The provisional credit gives you temporary access to the disputed funds while the case runs.
Credit card disputes work on a different clock. Under the FCBA, your issuer has to acknowledge your written notice within 30 days and resolve the investigation within two complete billing cycles, capped at 90 days.11Office of the Law Revision Counsel. 15 USC 1666 – Correction of Billing Errors There is no explicit provisional-credit requirement the way there is for debit, but most issuers pull the disputed amount off your balance while they investigate.
The Merchant’s Side
Your bank presents the dispute to the merchant’s bank, which notifies the merchant. The merchant then has a set window to respond with evidence defending the charge. If they miss the deadline or their evidence falls short, the chargeback stands and your credit becomes permanent. If they produce compelling evidence, such as signed delivery receipts, usage logs, or proof of authorization, the bank may deny the dispute, reverse the provisional credit, and put the charge back on your account. Your bank has to explain the denial in writing, and for credit card disputes it has to give you copies of the merchant’s evidence if you ask.12eCFR. 12 CFR 1026.13 – Billing Error Resolution
Your Credit Report During the Dispute
While a credit card dispute is pending, federal law bars the issuer from reporting the disputed amount as delinquent. It can note that the amount is “in dispute,” but it cannot threaten your credit over the unpaid disputed balance or report you late.13Office of the Law Revision Counsel. 15 USC 1666a – Regulation of Credit Reports It also cannot close or restrict your account solely because you disputed a charge.11Office of the Law Revision Counsel. 15 USC 1666 – Correction of Billing Errors Those protections run until the investigation concludes and you’ve had at least 10 days after resolution to pay any amount found valid.
If the Dispute Is Denied
A denial is not necessarily the end. The chargeback system has escalation paths, and you have options outside it entirely.
Inside the network process, your bank can push the case to pre-arbitration, giving the merchant another chance to accept or defend the chargeback. From there it can move to network arbitration, where the card network itself rules. These stages happen between the banks. Your job is to keep pressing your issuer and to supply any additional evidence they ask for.
Outside the chargeback system, you can file a complaint with the Consumer Financial Protection Bureau if you think your bank mishandled the investigation. The CFPB forwards your complaint to the company, which generally responds within 15 days.14Consumer Financial Protection Bureau. Submit a Complaint A CFPB complaint won’t reverse the decision on its own, but the regulatory pressure often produces results the customer service line didn’t.
Small claims court is another route for going after the merchant directly. Before you file, check whether your cardholder agreement includes a mandatory arbitration clause. Most major credit card agreements require binding arbitration instead of court, which limits your options but doesn’t erase them.
Don’t File a Dispute You Don’t Have
Filing a dispute for something you actually bought and received as described is called friendly fraud, and it carries real consequences. Banks track dispute patterns, and accounts that generate frequent chargebacks get flagged fast. Your bank can freeze your card, cut your credit limit, ask for extra documentation on routine transactions, or close the account. Some institutions start reviewing after as few as two or three disputes in a short period.
Deliberately filing a false chargeback can also expose you to criminal liability. There is no standalone federal chargeback-fraud statute, but prosecutors can charge wire fraud, bank fraud, mail fraud, or theft depending on the transaction and the amount. The merchant can pursue civil claims for the disputed amount plus damages. None of this touches good-faith disputes where you genuinely believe the charge was wrong; it targets filings meant to keep goods or services you already used.