How to Dispute a Fraudulent Bank Charge: A Step-by-Step Guide
Fraudulent charge on your bank statement? Here's exactly how to dispute it — what to say, timelines to expect, and your legal rights.
Last Updated: February 2026
Key Takeaways:
- Report a fraudulent charge to your bank as soon as you notice it — timelines matter for liability
- You have legal rights to dispute unauthorised transactions in most jurisdictions
- Document everything: transaction dates, amounts, and all conversations with your bank
- If your bank refuses a legitimate dispute, escalate to the financial ombudsman
- Small "test" transactions (£1–£5) are often precursors to larger fraud — report these too
Spotted a Transaction You Don't Recognise?
Before raising a dispute, it is worth ruling out a few common explanations:
- Merchant trading names sometimes differ from their brand name — a transaction from "PAYMTS LTD" may be your regular subscription
- Foreign currency conversions may make a familiar amount look unfamiliar
- Family members may have used a linked account or supplementary card
If none of these apply — or if you are unsure — report it to your bank. Reporting is always the right move when in doubt.
Step 1: Report the Transaction Immediately
Call your bank's fraud line — the number is on the back of your card or on your bank's official website.
What to say:
"I have an unauthorised transaction on my account and I want to report it as fraud and raise a dispute."
Be ready to provide:
- The transaction date and amount
- The merchant name as shown on your statement
- Whether you still have your card (or if it was lost/stolen)
- When you last used your card legitimately
Don't delay: Many banks have time windows for dispute filing. Some regulatory frameworks reference "without undue delay" as a condition of full liability protection. Same-day reporting is always better.
Step 2: Freeze Your Card
While on the call — or before calling, if you have the banking app:
- Freeze your card to prevent further fraudulent transactions
- Ask your bank to issue a replacement card with a new card number
Your new card should arrive within 3–7 business days depending on your bank. Activate it before first use with a new PIN.
Step 3: Understand Your Rights
In the United Kingdom
Under the Payment Services Regulations, your bank must refund an unauthorised payment transaction (i.e., one you did not authorise) "immediately" unless they have reasonable grounds to suspect fraud on your part. The bank can investigate, but they must provisionally credit the amount within one business day in most cases.
Your obligation: You must report the transaction "without undue delay" after becoming aware of it — in practice, this means as soon as you notice it.
In the European Union
The Payment Services Directive 2 (PSD2) provides similar protections. Liability for an unauthorised transaction is limited to €50 in most cases (and zero if you were not negligent and reported promptly). Your bank must refund the amount by the end of the following business day.
In the United States
For debit card fraud, Regulation E governs liability. If you report within 2 business days of learning of the fraud, liability is limited to $50. After 2 days but within 60 days, liability can be up to $500. After 60 days, you may lose all protection for transactions that occurred after the 60-day window. Prompt reporting is critical under US law.
For credit cards, the Fair Credit Billing Act caps liability at $50 for unauthorised charges, regardless of how quickly you report.
Step 4: File the Formal Dispute
Your bank will initiate a dispute process. You may need to:
- Confirm in writing (email or letter) the transactions you are disputing
- Provide a statement of what happened — when you noticed the fraud, what you know about how it may have occurred
- Sign a fraud declaration (some banks require this)
Ask your bank:
- What is the dispute reference number? Keep this.
- What is the expected timeline? Banks typically have 30–45 days to investigate.
- Will I receive provisional credit while the investigation is ongoing? In most jurisdictions, yes.
Step 5: Track the Dispute
Keep a log:
| Date | Action | Bank Representative | Reference Number | Outcome |
|---|---|---|---|---|
| [date] | Called to report fraud | [Name if given] | [Case ref] | Card frozen; dispute raised |
| [date] | Follow-up call | Provisional credit applied | ||
| [date] | Written confirmation submitted |
Follow up if you have not heard within the bank's stated timeframe. You are entitled to updates on your dispute status.
Step 6: If Your Bank Disputes Your Claim
Your bank may decline a chargeback or dispute if they:
- Believe the transaction was authorised
- Determine you were grossly negligent (e.g., shared your PIN)
- Cannot verify the fraud claim against their evidence
What you can do:
- Ask for written reasons — the bank must explain their decision
- Provide additional evidence — transaction records, correspondence, police reports
- Escalate within the bank — ask for the complaint to be reviewed at a senior level
- Complain to the financial ombudsman:
- UK: Financial Ombudsman Service (financial-ombudsman.org.uk)
- EU: EBA (via your national competent authority) or local ADR scheme
- US: Consumer Financial Protection Bureau (consumerfinance.gov)
The ombudsman process is free for consumers and can overturn bank decisions.
ATM Fraud Disputes: Additional Steps
If the fraud involved an ATM (cash withdrawal you did not make):
- Provide the ATM location and time of the fraudulent withdrawal
- Note the ATM's ID number from your statement or from the machine itself
- Report separately to ATM Fraud Prevention: The Complete Guide for context on your rights
ATM fraud disputes may involve additional investigation — your bank may review ATM CCTV footage, card reader logs, and PIN entry records. Cooperation with their investigation helps.
How to Dispute a Fraudulent Bank Charge: A Step-by-Step Guide
Chargeback vs Dispute: What's the Difference?
| Term | What It Means |
|---|---|
| Dispute | A formal challenge to a transaction — can be for fraud, non-delivery, or quality issues |
| Chargeback | The formal reversal process via the card scheme (Visa/Mastercard) — typically used when the merchant won't resolve it |
| Fraud report | Specifically for unauthorised transactions — triggers different bank processes than a service dispute |
For unauthorised transactions (someone used your card without permission), always use the word "fraud" — this typically triggers faster action than a standard dispute.
Common Mistakes to Avoid
- ❌ Waiting to see if the charge reverses itself — it will not; and your reporting window is running
- ❌ Only blocking your card without reporting the transaction — the fraud is not reported unless you explicitly report it
- ❌ Accepting the first refusal without escalating — you have rights and escalation options
- ❌ Not keeping records — documentation of dates, names, and reference numbers is essential for escalation
- ❌ Using the same compromised password elsewhere — the fraud may have originated from a credential breach; change the password everywhere
Frequently Asked Questions
Q: How long does a fraud dispute take to resolve? A: Initial provisional credit is typically applied within 1–5 business days. Full investigation and permanent resolution usually takes 15–45 days, though complex cases can take longer.
Q: The bank is asking me to fill out a lot of forms. Do I have to? A: Banks can require you to provide information to support their investigation. However, requirements must be reasonable. If you are uncertain about what you are being asked to sign, ask for clarification or take independent advice.
Q: I don't recognise a £1 charge. Is it worth reporting? A: Yes. Small test transactions are a common first step by fraudsters verifying that a card is active. Reporting a small test transaction promptly can prevent a larger fraud on the same card.
Q: Can I dispute a transaction I authorised but then regretted? A: Not through the fraud process. If you voluntarily made a purchase that you now want to reverse, contact the merchant for a refund or file a standard "buyer's remorse" dispute — the grounds are different and the process is different.
Q: A recurring subscription I cancelled is still charging me. Is that fraud? A: It may be a billing error rather than fraud. Contact the merchant first. If they do not resolve it, you can raise a dispute with your bank — though the grounds are "merchant error" rather than "fraud."
Internal Links
- Payment Fraud Incident Response: A Step-by-Step Guide — Incident Response Guide
- Consumer Fraud Response Checklist: Card or Account Compromised — Debit Card Stolen
- Payment Fraud Incident Response: A Step-by-Step Guide — How to Report Bank Fraud
- Payment Fraud Incident Response: A Step-by-Step Guide — Recovery Timeline
- Online Banking Security: How to Protect Your Accounts — Online Banking Security
- Consumer Fraud Response Checklist: Card or Account Compromised — Consumer Checklist
Last Updated: February 2026 | This article provides general guidance. For specific advice on your situation, contact your bank or seek independent financial or legal advice.
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