My Ex Used My Credit Card Without Permission: Disputes, Reports, and Lawsuits

Federal law caps your personal liability for unauthorized credit card charges at $50, and most card networks drop that to zero, so an ex who ran up charges on your credit card without permission usually can’t stick you with the bill. The catch most people miss: if your ex is still an authorized user on the account, those charges may not legally count as unauthorized, and you could owe every cent. Figure out their status on the account first. Everything else follows from that.

Was Your Ex an Authorized User or Joint Holder

This single question controls your whole strategy. Under federal regulations, “unauthorized use” means a person without actual, implied, or apparent authority used the card and the cardholder got no benefit from the transaction.¹ If your ex was never on your account, never had a card in their name, and used your number without your knowledge, the charges are unauthorized in the straightforward sense. Dispute them and the liability cap applies.

The problem shows up when you added your ex as an authorized user during the relationship and never took them off. While that authorization is active, their charges are your responsibility as the primary cardholder, even for purchases you didn’t specifically approve. Federal regulatory guidance is blunt: if you gave someone a card and they went beyond the authority you intended, you’re liable unless you’ve notified the issuer that the person is no longer authorized.¹ A private agreement with your ex about spending limits is invisible to the card company.

This is where people in breakup situations lose money. They assume that because they didn’t approve a specific purchase, it was fraud. Legally, it isn’t fraud if the person was authorized when the charge went through. Remove them first. Then any new charges are genuinely unauthorized.

Joint accounts work differently. A joint account holder has equal legal ownership, so you generally can’t close the account without their agreement, and both of you remain liable for the balance until it’s paid. Charges your ex makes on a joint account are their legal right to make, even after the breakup. Call the issuer about your options, which usually come down to paying off and closing together or transferring the debt. There’s no quick fix.

Remove Your Ex From the Account

If your ex is an authorized user, call the issuer right away and ask to remove them. You don’t need your ex’s consent. The CFPB also recommends asking for a new card with a new number, since the authorized user may have your details saved or memorized.² Once the removal is processed, tell your ex they’re off the account so they can’t later claim they didn’t know.

Dispute the Charges in Writing Within 60 Days

Once you’ve confirmed the charges qualify as unauthorized, contact your issuer to dispute them. You can start by phone or in the issuer’s app, but federal law ties its strongest protections to a written dispute.

Under 15 U.S.C. § 1666, you must send written notice to the issuer within 60 days of receiving the statement that first showed the charge. The notice needs your name and account number, the charges you believe are errors, and why you believe they’re errors. The issuer must acknowledge your letter within 30 days and resolve the dispute within two billing cycles, no more than 90 days.³ During the investigation, the issuer cannot try to collect the disputed amount or report it as delinquent.

Miss the 60-day window and the issuer is no longer legally required to follow the formal process. Many will still investigate fraud claims filed later as a courtesy, but they don’t have to. Check your statements every month, especially in the first few after a breakup.

What You Actually Owe

For charges that qualify as unauthorized, federal law limits your personal liability to the lesser of $50 or the amount obtained before you notified the issuer.⁴ After you notify the issuer, you owe nothing for any unauthorized charges that happen afterward, regardless of amount.

Several conditions must be met for the issuer to hold you liable even for that $50. The issuer must have given you notice of potential liability, provided a way to report unauthorized use, and provided a way to identify authorized users. If any of those is missing, your liability drops to zero by statute.⁴

In practice the $50 cap rarely matters. Visa, Mastercard, and most major issuers run zero-liability policies that eliminate cardholder responsibility for unauthorized charges, as long as you used reasonable care in protecting the card and reported the problem promptly.⁵ “Promptly” is vague by design, so the faster you move, the stronger your position.

One detail worth knowing: the burden of proof is on the issuer, not you. If the issuer wants to hold you liable, federal law requires it to prove either that the use was authorized or that all the conditions for imposing liability were met.⁴ You don’t have to prove it was your ex. The issuer has to prove it wasn’t unauthorized.

When Your Ex Claims You Gave Permission

Disputes with an ex get messier than disputes with a stranger. Your ex’s most likely defense, to the issuer or in court, is that you gave them permission. Maybe you handed them the card for groceries once. Maybe they had the number saved in a shared account. Issuers see this pattern constantly, and it can slow your dispute down.

The legal concept driving this is apparent authority. Under Regulation Z, a charge is only unauthorized if the person had no actual, implied, or apparent authority and the cardholder got no benefit.¹ If you shared the card freely during the relationship, your ex may argue they reasonably believed they still had permission. The no-benefit element matters too: if the charges covered a shared streaming subscription or a bill that paid for something you used, the issuer may push back.

Documentation is the counter. Save any text or email where you told your ex not to use the card. A message after the breakup saying “don’t use my card anymore” is strong evidence that later charges were unauthorized. Records showing you changed the locks, moved out, or otherwise ended shared arrangements help fix the timeline. The cleaner the before-and-after, the harder it is for your ex to claim implied authority.

File a Police Report and Identity Theft Report

A police report creates an official record that strengthens your card dispute and any later legal action. Bring your statements showing the charges, any evidence tying your ex to them, and a timeline of when the relationship ended and when the charges began. Police may or may not actively investigate, especially for smaller amounts, but the report itself is documentation.

Alongside the police report, file an identity theft report at IdentityTheft.gov. The FTC doesn’t resolve individual cases, but the report produces an official identity theft affidavit and a personalized recovery plan.⁶ That affidavit carries weight with issuers, credit bureaus, and law enforcement, and it entitles you to an extended fraud alert and additional free credit reports.

Depending on the dollar amount, what your ex did may violate federal law under 18 U.S.C. § 1029.⁷ Most ex-partner credit card fraud actually gets charged under state theft or fraud statutes, where penalties depend on the amount involved. Either way, your report puts it on the record.

Suing Your Ex

If the issuer resolves the dispute in your favor, you may not need to sue. But if the issuer denies your claim, or you have additional losses beyond the card charges themselves (time off work, late fees on other bills), a civil case may be worth filing.

Small claims court is the most accessible option. Dollar limits vary widely by state, roughly $2,500 to $25,000 depending on jurisdiction. You don’t need a lawyer, filing fees are modest, and the process is designed to be straightforward. Bring your statements, the police report, the FTC identity theft report, and any communications showing your ex lacked permission.

For larger amounts or more complicated situations, a standard civil lawsuit may make sense, potentially under a theory of conversion (the legal term for someone taking or using your property without permission). That approach fits when the unauthorized use is part of a broader pattern of financial abuse or when losses exceed small claims limits. Talking to an attorney is worth the cost at that level, because the strategy changes once you move past small claims.

Lock Down Your Accounts

Stopping the current charges is only half the job. An ex who had access to your financial life during the relationship likely knows your passwords, security questions, and account numbers. Assume they know everything.

Change passwords on every financial account, your email, and any site where your card is saved. Use a unique password for each one and enable multi-factor authentication wherever available. Prioritize email: if your ex can get into your inbox, they can reset passwords on everything else.

Then deal with saved payment methods. Log into subscription services, shopping sites, and apps where your card was stored and remove it. Cancel any recurring charges your ex set up during the relationship by contacting the merchant directly. If charges keep appearing after you’ve canceled with a merchant, ask your issuer about blocking that specific merchant.

Fraud Alerts and Credit Freezes

A fraud alert tells creditors to take extra steps to verify your identity before opening new accounts in your name. An initial fraud alert lasts one year and is free. An extended fraud alert, available once you’ve filed an identity theft report, lasts seven years.⁸ You only need to contact one of the three major bureaus (Equifax, Experian, or TransUnion), and it’s required to notify the other two.

A credit freeze is stronger. It blocks anyone from pulling your credit report to open new accounts, which stops your ex from opening cards or loans in your name entirely. Placing and lifting a freeze is free under federal law.⁹ Unlike an alert, you must contact each bureau separately to place a freeze, and you can temporarily lift it when you need to apply for credit yourself.

Check Your Credit Reports

Pull your credit reports through AnnualCreditReport.com, the only federally authorized source for free reports from all three bureaus.¹⁰ Look for accounts you don’t recognize, addresses you’ve never lived at, and inquiries you didn’t authorize. If your ex had enough information to use your credit card, they may have enough to open accounts in your name. Checking regularly for at least a year catches that early.¹¹

1
Consumer Financial Protection Bureau. Regulation Z Section 1026.12 Special Credit Card Provisions
2
Consumer Financial Protection Bureau. How Do I Remove an Authorized User From My Credit Card Account
3
Office of the Law Revision Counsel. 15 USC 1666 – Correction of Billing Errors
4
Office of the Law Revision Counsel. 15 USC 1643 – Liability of Holder of Credit Card
5
Mastercard. Zero Liability Protection Policy
6
Federal Trade Commission. Identity Theft – IdentityTheft.gov
7
Office of the Law Revision Counsel. 18 USC 1029 – Fraud and Related Activity in Connection With Access Devices
8
Consumer Advice. Credit Freezes and Fraud Alerts
9
Federal Trade Commission. New Federal Law Allows Consumers to Place Free Credit Freezes and Yearlong Fraud Alerts
10
Consumer Financial Protection Bureau. How Do I Get a Free Copy of My Credit Reports
11
Annual Credit Report.com. AnnualCreditReport.com Home Page