Say you open your statement and see a $212 charge for a blender you never ordered. You write to your card issuer. Then what? The issuer cannot just shrug. Federal rules put a clock on it, and knowing that clock helps you tell a slow review from a stalled one. This article is education only, not advice for your own case.
What counts as a billing error notice
A billing error notice is a written message to your card issuer saying your statement contains a mistake. The rules sit in Regulation Z, at 12 CFR 1026.13, which carries out the Truth in Lending Act and the Fair Credit Billing Act. You can read the text on the CFPB's Regulation Z page. Think of Regulation Z as the rulebook, and the Fair Credit Billing Act as the law behind it.
Your letter should include your name and account number. It should say why you believe there is an error. It should also list the type, date, and amount of each charge you question. The bank's help guidance describes these same elements in its explanation of disputing a charge.
Where you send it matters. The notice goes to the address the issuer lists for billing inquiries. That may not be the address you use for payments. A letter mailed to the payment box could lead to an argument about whether the issuer ever properly received it.
One caution. Not every complaint about a merchant is a billing error under Regulation Z. The sources describe the rules, but they do not map every kind of dispute. Check that your problem fits before you count on these protections.
Deadlines the issuer must meet
Start with your own deadline. Your written notice must arrive no later than 60 days after the issuer sent the first statement showing the error. Miss that, and you may be outside the billing error process.
Then the issuer's clock starts. It must acknowledge your notice in writing within 30 days, unless it has already fixed the problem by then. After that, it must investigate, correct any error, and tell you the outcome. The limit is two complete billing cycles, and never more than 90 days after it received your notice. Those are outer limits. They say nothing about which way the decision will go.
A simple log helps. Write down the date you mailed the letter, the date it arrived, and the date the acknowledgment came back. If day 31 passes with no word, you have a dated record to point to.
- Notice sent within 60 days of the first statement showing the error.
- Written acknowledgment within 30 days.
- Resolution within two billing cycles, or 90 days at most.
Protections while a dispute is open
While the dispute is open, you may withhold payment of the disputed amount. The rest of your bill still counts, so pay the undisputed part on time. A law firm summary of the CFPB's billing error guidance also notes that an issuer may not report the disputed amount as adverse to credit reporting agencies. It may not accelerate payment or close your account because you raised a good faith billing error.
Two questions stay open in the sources. Can late fees and interest still apply during an investigation? The material poses the question without answering it. Read the full rule and your card agreement rather than guessing. And how does a dispute touch a credit score? The sources do not say, so no particular score result should be expected.
Merchant cooperation and the outcome
Many disputes hinge on the merchant. The issuer often needs the merchant's information to decide whether a charge is valid, and merchants can be slow. That is a big reason the timelines exist.
If the merchant never answers, the issuer may decide without that information. According to the same summary, that can mean chargebacks to merchants, and sometimes wrong decisions that hurt cardholders. So keep your own copies of receipts, emails, and tracking numbers. Do not assume the issuer has them.
Other rules can add to this. State law and card network rules, such as those of Visa or Mastercard, may create further obligations. Debit cards run on a different framework, the Electronic Fund Transfer Act and Regulation E, as the Federal Reserve's Consumer Compliance Outlook explains. A myth worth dropping: credit and debit disputes are not interchangeable.
The sources also do not cover what happens if the issuer decides the charge was valid, or how to escalate. In that case, read the issuer's written explanation closely and look at official consumer resources, such as the FTC's guidance on disputing charges.
Questions to ask and warning signs
Back to the blender. Ask yourself a few plain questions. Did the written acknowledgment arrive within 30 days? Did my notice go to the billing inquiries address within 60 days of the first statement showing the charge? Has the issuer resolved things within two billing cycles or 90 days?
Some behavior looks inconsistent with the rules described. Examples are reporting the disputed amount negatively to credit bureaus, speeding up payment, or closing the account because of a good faith dispute. If you see that, consider asking a qualified professional or an official consumer agency about your situation.
For wider context, the CFPB's 2025 Consumer Credit Card Market report includes a deeper look at card transaction disputes. It is worth a read if you want the bigger picture beyond one letter and one charge.
Please seek a professional. This article is general information, not financial, tax or insurance advice. Please seek a licensed financial, tax or insurance professional about your own situation.
