How to Dispute an Unauthorized Credit Card Charge in California: A Step-by-Step Guide
How long do I have to dispute an unauthorized credit card charge?
Under the federal Fair Credit Billing Act, you generally have 60 days from the date your first statement containing the disputed charge was mailed or made available to send a written dispute to your card issuer. Missing that window doesn't guarantee you lose, but you forfeit the formal legal protections the FCBA provides. Check consumerfinance.gov for current rules.
Does disputing a credit card charge hurt my credit score?
Filing a billing dispute with your card issuer does not by itself hurt your credit score. Federal law prohibits issuers from reporting a disputed amount as delinquent while the dispute is under review. However, if the dispute is resolved in the merchant's favor and you then don't pay the balance, that nonpayment can affect your credit. Verify current rules at consumerfinance.gov.
What's the difference between a credit card dispute and a fraud claim?
A billing dispute typically covers errors like being charged the wrong amount, billed for something not received, or charged by a merchant you recognize. A fraud claim involves charges you didn't authorize at all, usually from card-number theft. Fraud claims go through your issuer's fraud department and are generally resolved faster. Both are separate processes with different forms and timelines.
Can I dispute a credit card charge in California for a subscription I forgot to cancel?
Possibly, but it depends on the facts. If you authorized the subscription originally, it's not technically an unauthorized charge, though a dispute may still succeed if the merchant failed to disclose auto-renewal terms clearly. California's automatic-renewal law requires explicit consent and easy cancellation; violations can be reported to the California Attorney General at oag.ca.gov.
What can I do if my credit card issuer denies my dispute?
If your issuer denies a billing dispute, you're entitled to a written explanation and can request the documents they relied on. You can submit additional evidence and ask for reconsideration. Beyond that, you can file a complaint with the CFPB at consumerfinance.gov/complaint, complain to the California AG at oag.ca.gov, or sue in California small claims court - generally up to $12,500 for individuals, though verify the current limit with your county superior court.
An unfamiliar charge on your credit card statement - whether it's a merchant billing error, a forgotten subscription, or outright fraud - doesn't have to be a fight you lose. Federal law and California's own consumer-protection rules give cardholders concrete tools to get their money back, but the process has specific steps and timing that matter.
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The Federal Baseline: What the Fair Credit Billing Act Covers
The Fair Credit Billing Act, a federal law enforced by the Consumer Financial Protection Bureau, gives credit card holders the right to formally dispute billing errors, which include unauthorized charges, charges for goods or services not received, and charges for the wrong amount. The law applies to credit cards specifically - not debit cards, which have a separate and generally weaker set of protections under the Electronic Fund Transfer Act.
To preserve your dispute rights under the FCBA, you generally need to send a written dispute to your card issuer within 60 days of the date the first statement containing the error was mailed or made available to you. That 60-day window is the number most people miss. If you spot a charge in August but don't flag it until November, you may have lost the formal legal protection, though your issuer may still resolve it as a courtesy. Check with your specific card issuer and the CFPB at consumerfinance.gov for current rules.
Once a valid dispute is filed, federal law generally requires the issuer to acknowledge it within 30 days and to resolve it within two billing cycles - no more than 90 days. During that period, the issuer can't try to collect the disputed amount or report it as delinquent to the credit bureaus.
How to Actually File the Dispute
Calling your card issuer is fine as a first step, but a phone call alone doesn't trigger your formal legal rights under the FCBA. You need to send a written dispute - a letter or, increasingly, a secure in-app or online message that creates a paper trail. The key is that you want documentation you can point to later if needed.
Your written dispute should include your name, account number, the date and dollar amount of the charge you're disputing, and a brief explanation of why it's an error or unauthorized. If you have supporting documentation - a screenshot showing a canceled subscription, a receipt that shows a different amount, an email confirming a return - include copies, not originals.
Send written letters to the card issuer's billing-inquiry address, which is often different from the payment address on your statement. Major issuers publish this address on their statements and websites. If you're using your issuer's app or online portal to file a dispute, save a screenshot or confirmation number as your record of when you submitted it.
California's Additional Layer: Rosenthal and the UCL
If your dispute involves a debt collector (say, a charged-off account sold to a collection agency that's claiming you owe a balance you already paid), California's Rosenthal Fair Debt Collection Practices Act adds protections that go beyond the federal FDCPA. Rosenthal covers original creditors as well as third-party collectors, which federal law does not. A collector that contacts you using false, deceptive, or harassing tactics is violating both laws.
California's Unfair Competition Law also gives the state attorney general and private plaintiffs the ability to go after businesses engaging in unlawful or unfair business practices - including billing schemes and fraudulent charges that a single credit card dispute might not fully address. This matters most when the conduct looks systematic, not just a one-time error.
If the Dispute Doesn't Go Your Way
If your card issuer sides with the merchant after investigating, you're entitled to a written explanation of the decision. You have the right to request the documents the issuer relied on in making that determination. If you believe the outcome is wrong, you can submit additional evidence and ask for the dispute to be reconsidered, though the issuer isn't legally required to change its decision.
See also: How to Dispute an Unauthorized Credit Card Charge in California: What Federal Law Requires and What to Do Step by Step · How to Dispute an Unauthorized Credit Card Charge in California: What Federal Law Actually Gives You
At that point, your options include filing a complaint with the CFPB at consumerfinance.gov/complaint, filing a complaint with the California Attorney General's office at oag.ca.gov, or - depending on the dollar amount - filing a claim in California small claims court, where the current jurisdictional limit as of 2026 is generally $12,500 for individuals (verify with your county superior court, as limits are set by statute and can change). Small claims court doesn't require an attorney and is specifically designed for situations like this.
If the disputed charge involved outright fraud by a merchant or scammer, you can also report it to the California Department of Justice at oag.ca.gov and to the Federal Trade Commission at reportfraud.ftc.gov. Those reports don't get your money back on their own, but they build the public record that can lead to enforcement actions.
A Few Practical Things Worth Knowing
Keep a copy of everything: your original dispute, any response from the issuer, and the timeline of when you sent and received documents. If an unauthorized charge looks like the result of card-number theft rather than a merchant dispute, report it as fraud through your card issuer's fraud line immediately - that's a separate process from a billing dispute and typically faster.
If the same merchant has billed you for a subscription you thought you canceled, California's automatic-renewal law requires companies to get explicit consent and to provide a clear cancellation mechanism. If a company failed to do that, the California Attorney General's office handles complaints and the law provides for civil penalties against violators.
This is general information, not legal or financial advice. Dispute deadlines, issuer policies, and small claims court limits can change - always verify current rules with the Consumer Financial Protection Bureau at consumerfinance.gov, the California Attorney General at oag.ca.gov, and your county's superior court self-help center for small claims procedures.