Banks charge fees for all sorts of things. Unarranged overdrafts, returned payments, monthly account fees that crept up without warning, charges applied after a disputed transaction. Most people see the deduction on their statement, feel a flash of frustration, and do nothing. That frustration is usually justified, and doing nothing is rarely the right response.
UK banks are regulated by the Financial Conduct Authority and are required to treat customers fairly. That obligation is not just a marketing line. It has teeth. If a charge was applied incorrectly, without proper notice, in error, or in a way that does not reflect the actual cost to the bank, you have grounds to challenge it formally, and a reasonable chance of getting it back.
This guide explains which charges can be disputed, how the complaints process works, and what to do if your bank refuses to engage seriously with your complaint.
Which Bank Charges Can You Actually Dispute?
Not every charge is worth challenging, and not every challenge will succeed. Before you write anything, it helps to understand what grounds you are standing on.
Charges that are commonly disputed successfully include unarranged overdraft fees where you were not given adequate notice, duplicate charges applied to the same transaction, fees charged after you had already closed or cancelled an account or service, charges that were applied following a bank error, and monthly fees increased without the required 30 days notice under the Payment Services Regulations 2017.
Charges that are harder to dispute are those that were clearly set out in your terms and conditions, applied correctly, and for which you received proper notice. That does not mean you cannot try, particularly if you feel the amount is disproportionate or the circumstances were exceptional, but you should go in with realistic expectations.
Start With a Formal Complaint to Your Bank
The first step is always a formal written complaint to the bank itself. This is not optional and it is not just a formality. The Financial Ombudsman Service, which is the escalation route if things go wrong, will only accept a case once the bank has had a proper opportunity to respond.
Your complaint should be in writing, either by letter or by email to the bank's official complaints address. It should state clearly what the charge was, when it was applied, why you believe it was incorrect or unfair, and what outcome you want, which in most cases is a full refund.
Keep the tone factual and direct. Banks receive a large volume of complaints and the ones that get resolved quickly are usually the ones that are clearly structured and specific. Vague complaints about feeling hard done by are easy to dismiss. A complaint that cites the specific date, the specific amount, and the specific reason it was wrong is much harder to brush aside.
Reference the FCA's Consumer Duty rules, which came into full force in July 2023 and require banks to deliver good outcomes for retail customers. If a charge caused you financial difficulty or was applied in a way that does not reflect good practice, that is directly relevant.
What Happens After You Complain?
Once you submit a formal complaint, the bank has eight weeks to respond with either a final decision or an update explaining why they need more time.
In practice, many complaints about bank charges are resolved within two to four weeks. Banks have complaints teams who deal with these regularly, and a well-presented complaint about a specific charge often results in a goodwill refund even when the bank does not formally accept liability.
If the bank upholds your complaint, they should refund the charge and may add a small amount of interest. If they reject it, they must explain why and tell you about your right to take the matter to the Financial Ombudsman.
Escalating to the Financial Ombudsman Service
If your bank rejects your complaint, or if eight weeks pass without a final response, you can refer the matter to the Financial Ombudsman Service free of charge.
The Ombudsman is independent and has the power to direct banks to pay compensation. They look at whether the bank treated you fairly, whether charges were applied correctly, and whether the bank followed its own terms and conditions properly.
You have six months from the date of the bank's final response letter to refer your case to the Ombudsman, so do not delay if you intend to escalate. Keep a copy of every piece of correspondence, including your original complaint and the bank's response.
The Ombudsman process can take time, sometimes several months for more complex cases, but for straightforward disputes about specific charges it is often resolved more quickly. There is no cost to you and no risk beyond the time it takes to submit your case.
Putting It in Writing
The single most important thing you can do when disputing a bank charge is to get your complaint in writing and make it formal from the start. A phone call to customer services might feel like the easiest option, but verbal complaints are harder to track, easier to dismiss, and give you no paper trail if you need to escalate.
A formal letter or email creates a clear record of when you complained, what you said, and what response you received. It also signals to the bank that you are serious and that you know the process, which often results in a faster and more favourable response.
If you are not sure how to structure a formal complaint letter that references the right regulations and makes the right arguments, Appeal Letters can generate one for you in under a minute. You describe the situation, and the letter is written in formal UK English, citing relevant legislation, and ready to send. It costs £4.99 and takes less time than a phone call to the bank's complaints line.
Whatever route you take, do not let an unfair charge go unchallenged simply because the process feels complicated. It is not, and the money is yours.
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