A chargeback works by having your bank pull funds from the merchant’s account and return them to yours after you dispute a charge, with the card network (Visa, Mastercard, and the others) moving the money and refereeing if the merchant pushes back. Two federal laws sit behind the process: the Fair Credit Billing Act for credit cards and the Electronic Fund Transfer Act for debit cards. They give you different protections, different deadlines, and different liability caps, so the card you used shapes every step that follows.
Try the Merchant Before You File
Most billing problems get fixed faster with a call or email to the seller than with a formal dispute. Save every reply, note the date and who you spoke with, and keep the cancellation confirmation if a subscription is involved.
For some credit card disputes, contacting the merchant first is required by law, not just good practice. When you are challenging the quality of goods or services rather than an unauthorized charge or billing error, federal law requires a good-faith attempt to resolve the issue with the merchant before your card issuer has to step in. These quality disputes are also limited to transactions over $50 that took place in your home state or within 100 miles of your billing address, though those geographic and dollar limits do not apply to online or mail-order purchases where the card issuer participated in the solicitation.1Office of the Law Revision Counsel. 15 USC 1666i – Assertion by Cardholder Against Card Issuer
What Counts as a Valid Dispute
The Fair Credit Billing Act defines the “billing errors” you can dispute on a credit card. In practice, they fall into a few categories:
- Unauthorized charges made without your permission.
- Goods or services you paid for but never received.
- A charge for the wrong amount.
- Merchandise that arrived defective or significantly different from what was described at the sale.
- A refund the merchant agreed to but never issued.
The statute specifically covers charges for goods or services “not accepted by the obligor” or “not delivered to the obligor in accordance with the agreement made at the time of a transaction.”2Office of the Law Revision Counsel. 15 USC 1666 – Correction of Billing Errors
Charges that keep hitting your account after you canceled a subscription are one of the most common valid grounds. Every major card network has dedicated reason codes for canceled recurring transactions. Screenshot the cancellation policy, save the confirmation, and note when you asked to cancel.
How to File the Dispute
For credit cards, the Fair Credit Billing Act requires written notice sent to your card issuer’s billing inquiry address, which is not the general customer service address or the payment address. Your notice must include your name, account number, the dollar amount you believe is wrong, and an explanation of the error. A phone call alone does not trigger the full statutory protections, so follow any call with a written letter or use your issuer’s formal dispute portal.2Office of the Law Revision Counsel. 15 USC 1666 – Correction of Billing Errors
For debit cards the rules are more flexible. Your bank must accept both oral and written notice of an error, though it can ask you to confirm an oral report in writing within 10 business days.3eCFR. 12 CFR 1005.11 – Procedures for Resolving Errors
Whatever the card type, documentation is what wins a dispute. Have this ready before you file:
- The exact transaction date, dollar amount, and merchant name as it appears on your statement.
- Sales receipts or order confirmations showing what was promised.
- Emails, chat logs, or notes from calls where you tried to resolve the issue with the merchant.
- Tracking numbers if a package never arrived or went to the wrong address.
- Photos of damaged, defective, or incorrect items.
Inside the Investigation
Once your bank has the dispute, what happens next depends on the card.
Credit Cards
Your card issuer must acknowledge a written dispute within 30 days of receiving it. It then has two full billing cycles, but no more than 90 days, to investigate and either correct the error or explain why the charge was accurate.2Office of the Law Revision Counsel. 15 USC 1666 – Correction of Billing Errors
While the investigation is open, you do not have to pay the disputed amount, and the issuer cannot charge interest or fees on it. The issuer also cannot report the disputed amount as delinquent to credit bureaus or threaten your credit standing during that window.4Office of the Law Revision Counsel. 15 USC 1666a – Regulation of Credit Reports You still need to pay any undisputed portion of the bill on time.
Debit Cards
Your bank must investigate and resolve a debit card error within 10 business days of receiving your notice. If it needs more time, it can extend the investigation to 45 days, but only if it provisionally credits your account within the first 10 business days for the amount in dispute.3eCFR. 12 CFR 1005.11 – Procedures for Resolving Errors
When the Merchant Fights Back
A chargeback is not automatically final. After the card network forwards your dispute, the merchant’s bank typically has 20 to 45 days to respond with evidence defending the original charge.5Mastercard. How Can Merchants Dispute Credit Card Chargebacks This response is called representment: the merchant is re-presenting the transaction and arguing it was legitimate.
What the merchant sends depends on the reason for the dispute. On a claim that goods were defective or not as described, the merchant might submit a signed delivery receipt, proof of repair or replacement, or documentation that the goods matched the original product description. On fraud claims, the merchant may submit address verification records, authentication data, or other evidence tying the purchase to the cardholder.
Your issuing bank weighs the merchant’s evidence against your documentation and decides. If the bank sides with the merchant, any provisional credit is reversed and the original charge reappears on your account.
Pre-Arbitration and Arbitration
If the first round does not settle it, either side can escalate to pre-arbitration. At this stage, the issuing bank or the merchant’s bank submits more documentation explaining why the other side is wrong. If the merchant’s bank accepts the pre-arbitration case or fails to respond within 30 calendar days, it takes financial responsibility for the disputed amount.
If neither side backs down, the card network itself steps in as the final decision-maker through formal arbitration. The network reviews all documentation and issues a binding ruling. The losing party in arbitration typically bears the cost, which is handled between the banks; you as the cardholder do not pay arbitration fees directly.
Deadlines That Can End Your Right to Dispute
Miss the filing window and you can lose your protections entirely.
For credit cards, the Fair Credit Billing Act requires written notice within 60 days of the date your card issuer sent the first statement containing the error. After that, you lose the statutory protections that prevent collection and credit reporting during the dispute.2Office of the Law Revision Counsel. 15 USC 1666 – Correction of Billing Errors
For debit cards, you also have 60 days from the date your bank sent the statement to report an unauthorized transfer. Filing later does not bar you from disputing, but it exposes you to liability for any unauthorized transfers that occurred after the 60-day mark and before you notified the bank.6eCFR. 12 CFR 205.6 – Liability of Consumer for Unauthorized Transfers
Your Liability If the Card Was Used Without You
The two laws set very different caps for unauthorized use.
On a credit card, your maximum liability for unauthorized charges is $50, and only if certain conditions are met, including that the issuer gave you proper notice about potential liability and the unauthorized use happened before you reported the card lost or stolen. If you report the card compromised before any fraudulent charges hit, you owe nothing. Most major issuers voluntarily offer zero-liability policies that go beyond the federal minimum.7GovInfo. 15 USC 1643 – Liability of Holder of Credit Card
Debit card protections under the Electronic Fund Transfer Act are less generous and hinge on how fast you report:
- Within 2 business days of learning about the loss or theft, your liability caps at $50.
- After 2 business days but within 60 days of your statement, your liability caps at $500.
- After 60 days, you can be responsible for the full amount of unauthorized transfers that occur after the 60-day window, with no cap.
That uncapped tier is why speed matters so much with a debit card.6eCFR. 12 CFR 205.6 – Liability of Consumer for Unauthorized Transfers
If You Lose the Dispute
When your bank sides with the merchant, you owe the disputed amount plus any finance charges that accumulated during the investigation. Your issuer must tell you the date by which payment is due and give you the same grace period you had before the dispute, so you have time to pay without extra interest.8Federal Trade Commission. Using Credit Cards and Disputing Charges
On a debit card, if the bank provisionally credited your account and later finds no error, it can remove the credit. The bank must notify you at least three business days before pulling those funds back out.
Risks of Filing Disputes You Shouldn’t
Filing chargebacks for charges that are actually legitimate, sometimes called friendly fraud, has consequences. Banks track every dispute you file, including the reason, the amount, and whether it went in your favor. Even two or three disputes in a short period can trigger an account review.
Your bank may close your account without advance notice, flag you as high-risk and restrict card features, or in some cases, refer you for legal action. Some jurisdictions treat intentional chargeback fraud as a form of payment card fraud or wire fraud. Criminal prosecution is uncommon, but merchants have pursued civil lawsuits against repeat offenders for significant losses.