Banking Guide: UK Overdrafts Explained — Arranged vs Unarranged, Fees, Interest Rates and Your Rights in 2026

An overdraft lets you spend more money than you have in your current account, effectively borrowing from your bank up to a pre-agreed or tolerated limit. It is a flexible credit facility attached to your current account rather than a separate loan product.

There are two types:

• Arranged overdraft (also called an authorised or agreed overdraft): A borrowing limit you set up with your bank in advance. The bank agrees to let you go overdrawn up to a specified amount, and you pay interest on the balance you use.
• Unarranged overdraft (also called an unauthorised overdraft): When you go overdrawn without prior agreement, or exceed your arranged limit. Since the FCA's 2020 reforms, banks can no longer charge higher rates for unarranged overdrafts than for arranged ones.

Overdrafts differ from personal loans in several important ways. They are revolving credit — you can dip in and out without reapplying. There is no fixed repayment schedule; any money paid into your account reduces the overdraft balance automatically. However, this flexibility comes at a cost: overdraft interest rates are typically much higher than personal loan rates, making them unsuitable for long-term borrowing.

Before April 2020, UK overdraft pricing was notoriously complex. Banks charged a patchwork of daily fees, monthly fees, per-transaction charges, and interest — often making it nearly impossible for consumers to compare costs between providers. The Financial Conduct Authority (FCA) intervened with sweeping reforms that fundamentally changed how overdrafts are priced.

The key changes, which remain in force in 2026, include:

1. A single interest rate: Banks must now charge a single, simple annual interest rate (EAR) on all overdraft borrowing. No more daily or monthly fixed fees on top of interest. This applies to both arranged and unarranged overdrafts.
2. No higher charges for unarranged overdrafts: The rate charged for unarranged borrowing cannot exceed the rate for arranged borrowing. This was a major shift — previously, unarranged fees could be eye-wateringly expensive.
3. Refused payment fees banned: Banks can no longer charge you simply for declining a payment when you lack sufficient funds.
4. Alerts before charging: Banks must provide alerts (usually via text or app notification) before you incur overdraft interest, giving you a chance to pay money in.
5. Advertising transparency: Overdraft rates must be advertised prominently and clearly so consumers can compare them, much like APRs on credit cards.

According to the FCA's overdraft guidance, these reforms were designed to make overdrafts simpler, fairer, and easier to manage. The regulator estimated that the changes would save consumers collectively around £1 billion per year, with the heaviest users of unarranged overdrafts benefiting the most.

However, the single-rate requirement had a notable side effect: many banks increased their arranged overdraft rates to compensate for lost unarranged fee revenue. As a result, arranged overdraft EARs at the major high-street banks rose sharply in 2020 and have remained elevated since.

Despite the Bank of England base rate falling from 5.25% to 3.75% over the past two years, overdraft interest rates at the major UK banks have barely budged. Most high-street banks charge between 35% and 40% EAR on arranged overdrafts.

Here is how the major providers compare:

Some key observations:

• Barclays and Starling sit at the lower end with 35% EAR, while most other major banks cluster around 39-40%.
• Digital banks do not necessarily offer cheaper overdrafts. Monzo charges 39% EAR, comparable to the traditional high-street banks.
• First Direct, despite being known for excellent customer service and its fee-free current account, charges the same 39.9% EAR as its parent HSBC.
• A few providers offer interest-free overdraft buffers (typically £250-£500 for certain account types), which can be worthwhile if your borrowing stays within that range.

To put these rates in context, if you were overdrawn by £1,000 for a full year at 39.9% EAR, you would pay approximately £399 in interest. Even being overdrawn by £500 for six months would cost around £100. These are expensive borrowing costs by any measure, and considerably higher than a typical personal loan rate of 6-8%.

If you are currently paying high overdraft interest, it may be worth considering whether a high-interest current account for your savings could offset some of that cost, or whether switching banks via CASS to a lower-rate provider makes sense.

You might wonder why overdraft rates remain at 35-40% when the Bank of England base rate has been falling steadily. The short answer is that overdraft rates have never been closely linked to the base rate in the way that mortgage rates or savings rates are.

The Bank of England's base rate influences the wholesale cost of money, but overdraft pricing reflects additional factors:

• Credit risk: Overdraft lending is unsecured and on-demand, meaning the bank cannot reclaim collateral if you fail to repay. This risk premium is a major component of the rate.
• Operational costs: Managing millions of overdraft facilities, sending alerts, and handling disputes all carry costs.
• Cross-subsidy removal: Before the FCA reforms, profitable unarranged overdraft fees effectively subsidised cheaper arranged overdraft rates. With that cross-subsidy removed, arranged rates had to rise.
• Regulatory capital: Banks must hold capital reserves against unsecured lending exposure, which has a cost.

The result is that even as the base rate has dropped by 1.5 percentage points since August 2023, most banks have not passed any of that reduction through to overdraft customers. This stands in contrast to mortgages, where rate cuts have been more visible, particularly on new fixed-rate deals.

UK overdraft users benefit from several layers of consumer protection. Knowing your rights can help you avoid unfair charges and resolve disputes effectively.

Right to clear information: Your bank must tell you your overdraft interest rate, your arranged limit, and provide timely alerts before you start incurring charges. If they fail to do so, you may have grounds for a complaint.

Right to a repayment plan: If you are in persistent overdraft use (typically defined as being overdrawn for more than 12 months), your bank is required by the FCA to contact you and offer help. This could include a structured repayment plan, a reduced interest rate, or signposting to free debt advice.

Right to complain: If you believe you have been treated unfairly — for example, if your bank granted you an overdraft you clearly could not afford, or failed to provide required alerts — you can complain to the bank first. If they do not resolve your complaint satisfactorily within eight weeks, you can escalate to the Financial Ombudsman Service, which can order compensation.

Vulnerability protections: The FCA requires banks to treat customers in vulnerable circumstances with particular care. If financial difficulty, health issues, or life events are affecting your ability to manage your overdraft, your bank should offer appropriate support.

Cooling-off period: When you first open a current account with an overdraft facility, you typically have 14 days to cancel the overdraft without penalty.

For comprehensive guidance on what to do if you are struggling with overdraft debt, MoneyHelper — the government-backed money guidance service — provides free, impartial advice. Your credit score can also be affected by sustained overdraft use, so it is worth understanding that relationship.

Given the high cost of overdraft borrowing, it is worth considering alternatives if you find yourself regularly dipping into the red.

Build an emergency fund: Even a small cash buffer of £500-£1,000 in an easy-access savings account can eliminate the need for most overdraft use. At current savings rates, you will earn interest rather than paying it.

0% money transfer credit cards: Some credit cards allow you to transfer funds to your bank account at 0% interest for a promotional period (typically 12-24 months), with a small transfer fee of 2-4%. If you have a persistent overdraft balance, this can be a far cheaper way to clear it.

Personal loans: For larger overdraft balances that you cannot clear quickly, a personal loan at 6-8% APR is dramatically cheaper than a 39.9% overdraft. The fixed repayment schedule also provides structure.

Budgeting tools: Many digital banks offer spending insights, salary sorting, and round-up features that can help you avoid going overdrawn in the first place.

Employer salary advances: Some employers now offer early access to earned wages through fintech partnerships. This can bridge short-term cash flow gaps without incurring overdraft charges.

Overdraft buffer accounts: A few banks offer interest-free overdraft buffers (e.g., Nationwide FlexDirect offers £1,250 interest-free for the first year). If you regularly use a small overdraft, switching to one of these accounts could eliminate your interest costs entirely.

Free debt advice: If your overdraft has become unmanageable, organisations like StepChange, Citizens Advice, and the National Debtline offer free, confidential support. There is no shame in seeking help — these services exist precisely for this purpose.

If you are currently reliant on an overdraft, here is a structured approach to reducing and eventually eliminating it:

1. Know your numbers: Check your banking app to see your current overdraft balance, your arranged limit, and the interest rate you are paying. Calculate how much interest you are paying per month.

2. Set a target: Rather than trying to clear the entire overdraft at once, set a realistic monthly target. Reducing your overdraft by £50-£100 per month is achievable for most people and builds momentum.

3. Reduce your limit gradually: As you pay down the balance, ask your bank to reduce your arranged limit accordingly. This prevents you from slipping back to the full amount. Most banks let you adjust your limit via their app.

4. Automate the process: Set up a standing order on payday to transfer a fixed amount into a separate savings pot or account. Treat this like a bill — pay yourself first.

5. Review direct debits and subscriptions: Cancelling unused subscriptions or renegotiating bills (energy, insurance, broadband) can free up enough cash to make a meaningful dent in your overdraft.

6. Consider switching: If your bank charges 39.9% and a competitor charges 35%, switching via the Current Account Switch Service takes just seven working days. Some banks will match or improve your existing overdraft limit to win your business.

7. Check your deposit protection: While you focus on clearing debt, make sure any savings you do hold are protected under the FSCS scheme — up to £85,000 per banking group.

The key principle is consistency over speed. A steady, manageable reduction plan is far more sustainable than dramatic cuts that leave you reaching for the overdraft again next month.

This article is for informational purposes only and does not constitute financial advice. You should seek independent financial advice before making any investment decisions. If you are struggling with debt, contact a free debt advice service such as StepChange (0800 138 1111) or Citizens Advice.