How to Write and Send a Dispute Letter to a Creditor

A dispute letter to a creditor is a written notice, sent to the address the creditor designates for billing inquiries, that challenges a specific charge on a credit card or other revolving account and triggers your protections under the Fair Credit Billing Act. To keep those protections, the letter has to reach the creditor within 60 days of the statement date showing the error.¹ Timing, address, and specificity are what make the letter work.

Confirm the FCBA Applies to Your Account

The Fair Credit Billing Act covers open-end credit plans: credit cards and revolving store charge accounts.² It does not cover auto loans, personal installment loans, or mortgages. Debit card disputes fall under a different law with tighter deadlines and higher liability. If your problem is on a credit card statement, the process below is yours.

What Counts as a Billing Error

Your letter is stronger when the problem clearly fits one of the categories the statute recognizes:¹

A charge you never made or authorized.
A charge for the wrong amount (billed $142.50 when the receipt shows $42.50).
A charge for goods that never arrived or that you returned.
A payment or credit that doesn’t appear on the statement.
A math error, including a miscalculated finance charge.
A statement the creditor failed to mail to your current address on file.

Problems with the quality of what you bought, rather than with the charge itself, go through a different provision covered further down.

Gather Evidence Before You Write

Pull the statement showing the error and compare each line against your own records. Some charges look unfamiliar because merchants bill under a parent company’s name, so check that before assuming a charge is fraudulent.

Once you’re sure something is wrong, collect what documents it: itemized receipts, shipping and delivery tracking, return tracking numbers or credit slips, and a log of any calls you’ve already made to the merchant. Copies are fine; keep the originals in a folder in case the dispute escalates.

What to Put in the Letter

The letter doesn’t have to be long. It has to be specific. Regulation Z requires three things: enough information to identify your account, the type and amount of the error, and your explanation of why it’s wrong.² The FTC publishes a sample letter that follows this structure.³

Header

At the top, put your full name, mailing address, and account number exactly as they appear on your statement. Technically you only need enough to identify the account, but including both name and number avoids any argument.² Date the letter. Address it to the creditor’s billing inquiries department, not the payment address.

Body

State the exact dollar amount you’re disputing, the transaction date as shown on your statement, and the merchant name attached to the charge. If several charges from the same merchant appear on one statement, include the transaction ID or reference number for each one so the investigator can find the right entries.

Then explain why the charge is wrong, factually and briefly. Something like: “I was charged $142.50 on June 3 at Smith Electronics, but my receipt shows a purchase of $42.50, a difference of $100.00.” If it’s a duplicate charge, say so. If the item never arrived, say that. Don’t bury the point.

Closing

List every document you’re enclosing as evidence. Say that you are exercising your rights under the Fair Credit Billing Act; that phrase signals to the clerk that this is a formal dispute with legal deadlines, not a casual inquiry. Add a daytime phone number so the investigator can reach you quickly.

Where and How to Send It

This is where most people slip. The letter must go to the address the creditor designates for billing inquiries, not the payment processing address on the remittance slip.⁴ The billing inquiry address is usually printed on the back of your statement or in your cardholder agreement. A letter sent to the payment center can sit in a pile no one reviews for disputes, and your 60-day window can close while it gets rerouted.

Use Certified Mail

Send the letter by certified mail with a return receipt. As of January 2026, USPS charges $5.30 for Certified Mail, plus $4.40 for a physical return receipt card or $2.82 for an electronic return receipt, on top of regular postage. The total runs roughly $10 to $12. That gets you a dated, signed proof of delivery that eliminates any “we never got it” defense.⁴

What About Online Portals

Many creditors offer online dispute forms, and they are faster. The catch: the FCBA specifically requires a “written notice” sent to the address disclosed for billing inquiries.⁵ Whether an online submission counts as written notice under the statute is ambiguous. Some creditors honor online disputes and resolve them quickly, but if things go sideways and you need to prove you complied with the law, a certified mail receipt is unambiguous. The safe move is to file through the portal for speed and follow up with a mailed letter for the legal record.

What Happens After the Letter Arrives

The creditor must acknowledge your letter in writing within 30 days. It must then complete a full investigation and resolve the dispute within two billing cycles, and in no case later than 90 days from receiving your notice.¹

While the investigation is open, the creditor cannot try to collect the disputed amount, report it as delinquent to credit bureaus, or close or restrict your account because you’re withholding payment on the disputed portion. If the investigation confirms the error, the creditor must remove the charge and any finance charges that accrued on it.¹

Keep Paying the Rest of the Balance

You can withhold payment on the disputed amount, but everything else on the statement remains due on schedule: undisputed charges, new purchases, cash advances. Skip payment entirely because of one disputed charge and the creditor can charge interest and late fees on the undisputed portion, and that delinquency can hit your credit report.²

If the Dispute Is Denied

If the creditor decides the charge is correct, it must send you a written explanation and copies of any supporting documents you request.¹ Read those documents carefully. Sometimes what the creditor produces as evidence actually supports your side.

File With the CFPB

You can complain to the Consumer Financial Protection Bureau at consumerfinance.gov. The CFPB forwards your complaint to the company, which generally has 15 days to respond, or up to 60 days in complex cases. Include key dates, amounts, and copies of your dispute letter and the creditor’s response; the portal accepts up to 50 pages of supporting documents. You generally cannot submit a second complaint about the same issue, so be thorough the first time.⁶

The Creditor’s Penalty for Not Following the Rules

A creditor that fails to follow the FCBA’s dispute procedures forfeits the right to collect the disputed amount and any finance charges on it, up to $50, even if the charge turns out to be legitimate.⁷ That forfeiture is automatic and doesn’t require a lawsuit.

If you do sue, statutory damages for FCBA violations on open-end credit accounts range from $500 to $5,000 (higher if the creditor has a pattern of violations), plus actual damages and attorney’s fees.⁸ These claims carry a one-year statute of limitations, so don’t sit on them.

Disputes Over the Quality of Goods or Services

The process above covers billing errors: charges that are wrong, unauthorized, or unexplained. If the charge itself is correct but the product is defective or the service was never properly performed, that goes through a different provision of the FCBA with stricter requirements.

To assert a quality claim against your card issuer, three conditions apply: the transaction must exceed $50, the purchase must have occurred in your home state or within 100 miles of your billing address, and you must have first made a good-faith attempt to resolve the problem with the merchant directly.⁹

The $50 and distance limits don’t apply when the seller is the same entity as the card issuer, is controlled by the card issuer, or obtained the sale through a mail solicitation the card issuer participated in.⁹ Store-branded cards used at the issuing retailer are the common example.

For a quality dispute, document your attempts to resolve the issue with the merchant before contacting the card issuer. Emails, chat transcripts, and a call log all count. Without evidence you tried the merchant first, the card issuer can reject the claim outright.

1
Office of the Law Revision Counsel. 15 USC 1666 – Correction of Billing Errors
2
Consumer Financial Protection Bureau. 12 CFR Part 1026 Regulation Z – 1026.13 Billing Error Resolution
3
Federal Trade Commission. Sample Letter for Disputing Credit and Debit Card Charges
4
Federal Trade Commission. Using Credit Cards and Disputing Charges
5
eCFR. 12 CFR 1026.13 – Billing Error Resolution
6
Consumer Financial Protection Bureau. Submit a Complaint About a Financial Product or Service
7
United States Code. 15 USC 1666 – Correction of Billing Errors
8
Office of the Law Revision Counsel. 15 USC 1640 – Civil Liability
9
Office of the Law Revision Counsel. 15 USC 1666i – Assertion by Cardholder Against Card Issuer