A straightforward guide to borrowing from your current account

Business overdrafts can feel deceptively simple: you dip into a pre-agreed limit when cash comes in late, then repay when invoices land. For many UK firms, that flexibility is the appeal, especially when VAT, payroll and supplier terms do not line up neatly. But the small print matters. Overdraft pricing is typically variable, fees can add up, and many facilities are repayable on demand, meaning the bank can reduce or withdraw the limit with little notice.

UK SMEs have continued to rely on overdrafts for working capital, with total outstanding amounts reported at about £7.95 million as of end September 2025. At the same time, usage has shifted: the share of SMEs using overdrafts fell to 13% in early 2024, and a significant proportion of applications do not succeed. In other words, overdrafts remain common, but they are not guaranteed and they are not always the cheapest way to fund predictable needs.

Understanding an overdraft is not just about the rate - it is about control, certainty, and what happens when the bank changes its mind.

Who tends to benefit most

This is for UK business owners and directors who have a trading current account and occasionally need short-term breathing room. If your cash flow is lumpy - seasonal sales, staged project payments, or clients who pay in 30 to 60 days - an overdraft can reduce the stress of timing mismatches. It is also relevant if you are currently “living in the red” and want to sense-check whether your overdraft is doing a sensible job or quietly becoming a long-term crutch.

It is not just for established firms. Start-ups and younger businesses may seek an overdraft as a safety net, but approval can be tougher without proven trading history, and the limits offered may be modest. If you need finance for a planned investment (equipment, fit-out, hiring) rather than a temporary gap, a different product often fits better.

The main overdraft routes in the UK

1. Arranged overdraft (bank current account) - a pre-agreed limit with interest on the amount used.

2. Unarranged borrowing (going over limit) - typically much higher pricing and extra charges.

3. Secured overdraft - supported by assets, sometimes allowing larger limits.

4. Unsecured overdraft - more dependent on credit profile and trading performance.

5. Specialist overdraft-style facilities - newer, flexible draw-repay-redraw options used in SME and property scenarios.

Cost, impact, returns and risks at a glance

What lenders usually look for

Eligibility is often more practical than people expect: the bank wants confidence that the overdraft will be used for short-term gaps and repaid from normal trading. In the UK, overdrafts are typically offered by your current account provider, so your day-to-day banking conduct matters. Regular inbound revenue, sensible account management, and a clear pattern of cash flow are positives. Repeated unpaid items, persistent limit breaches, or long periods fully drawn can make renewal harder.

Limits vary widely, but many mainstream arranged overdrafts sit in a range that may start from a few hundred pounds and, for smaller businesses, commonly extend into the tens of thousands depending on trading history and affordability. Banks may ask for management accounts, recent bank statements, and projections that show how the facility will be cleared. Secured options may be available where assets support the risk.

If you want to compare overdraft-like options or alternative working-capital products beyond a single bank, Kandoo can help you understand what is realistic, what it may cost in real terms, and what trade-offs you are making on flexibility versus certainty.

How an overdraft typically works (step by step)

1. Review your cash flow gaps and average monthly swings.

2. Check your current account conduct and recent bank statements.

3. Request a limit aligned to realistic short-term needs.

4. Agree pricing, fees, and the bank’s review terms.

5. Use funds only when timing gaps actually arise.

6. Repay quickly as income lands, then reduce reliance.

7. Monitor utilisation weekly and avoid exceeding the limit.

Pros, cons and practical considerations

The fine print that catches people out

An overdraft is easiest to live with when it is genuinely temporary. The moment it becomes permanent, you are effectively financing working capital at a relatively high, variable rate, sometimes alongside arrangement or renewal fees. It is also crucial to plan for the bank’s discretion. Many UK business overdrafts can be called in or reduced even when you are performing, which can quickly turn a manageable situation into a scramble to cover wages or suppliers.

Also watch how close you run to the limit. Going over can trigger sharply higher unauthorised pricing and penalties. If your cash flow routinely pushes you to the edge, that is often a signal to resize the facility, improve debtor collection, or move to a product designed for ongoing funding rather than short-term bridging.

Alternatives worth comparing

1. Term business loan - typically more predictable repayments and often lower rates than overdrafts.

2. Revolving credit facility - similar flexibility, sometimes clearer terms than an overdraft.

3. Invoice finance - unlocks cash tied up in receivables.

4. Merchant cash advance - can suit card-heavy businesses, but compare total payback.

5. Asset finance - funds equipment without draining working capital.

6. Specialist overdraft-style facilities - can offer draw-repay-redraw flexibility for certain scenarios.

FAQs

What is the difference between arranged and unarranged overdrafts?

An arranged overdraft is an agreed limit with your bank, with interest charged on what you use. Unarranged borrowing happens when you exceed that limit (or have no limit) and is usually priced much more aggressively, often with added fees. If you are regularly slipping into unarranged territory, it is a sign the facility is undersized or your cash flow plan needs attention.

Are business overdrafts expensive in the UK?

They can be. Arranged business overdrafts are commonly priced in a broad range around 10% to 19% EAR, and the rate may vary and change over time. Unauthorised borrowing can be far higher, with some examples around 29.5% plus penalties. The key is to look at interest plus any arrangement, renewal or excess fees.

Can my bank withdraw my overdraft?

Often, yes. Many facilities are repayable on demand, which means the bank can reduce or remove the limit with limited notice. That does not mean it will happen routinely, but you should treat it as a real risk and keep a contingency plan.

Why do overdraft applications get declined?

Common reasons include limited trading history, weak account conduct, thin margins, heavy existing debt, or forecasts that do not show a credible path to clearing the balance. UK statistics also indicate a sizeable share of applications do not succeed, so it is sensible to prepare alternatives before you rely on approval.

Is an overdraft good for long-term funding?

Usually not. Overdrafts are designed for short-term gaps. If your overdraft is permanently used, you may be paying a premium for flexibility you no longer benefit from. A term loan, revolving facility, or invoice finance can be more suitable for ongoing working-capital needs.

Can I shop around for an overdraft like I would for a loan?

Overdrafts are typically linked to your current account provider, which can limit your ability to deal-shop without changing bank accounts. That makes it even more important to compare broader working-capital options if you want competitive pricing or different terms.

What Kandoo can do for you

Kandoo is a UK-based retail finance broker. If you are weighing up an overdraft versus other ways to smooth cash flow, we can help you compare costs in plain English, sense-check affordability, and identify alternatives that better match how your income actually arrives. The aim is simple: keep you trading confidently, without overpaying for flexibility or being caught out by terms you did not expect.

Disclaimer

This article is for general information only and does not constitute financial advice. Rates, fees and eligibility vary by provider and can change. Always review the terms of any facility and consider taking independent advice for your circumstances.