Business Overdrafts UK: How They Work & Alternatives

What Is a Business Overdraft?

A business overdraft is a flexible borrowing facility attached to your business current account. It allows you to spend more than the balance in your account, up to a pre-agreed limit, providing a financial cushion for those times when outgoings temporarily exceed income.

Overdrafts are a form of revolving credit—you only pay interest on the amount you actually use, and once cash comes in you can repay some or all of the balance and then draw on it again as needed. This makes them particularly well suited to managing short-term cash-flow fluctuations rather than funding long-term investments.

How Business Overdrafts Work

Once your bank approves an overdraft facility, you can draw on it simply by making payments or withdrawals that take your account below zero. There is no separate drawdown process and no fixed repayment schedule. You simply repay the overdraft as money flows back into the account.

Overdrafts are reviewed periodically—usually annually—and the bank can adjust or withdraw the facility at relatively short notice. This is an important distinction from a term loan, which has a fixed repayment schedule that the lender cannot normally alter.

Most banks require the overdraft to “swing” regularly—meaning the account should return to credit periodically. A permanently drawn overdraft may prompt the bank to suggest converting it to a term loan, which provides more certainty for both parties.

Costs and Fees

Business overdraft interest rates vary widely. High-street banks typically charge between 5% and 15% EAR (Equivalent Annual Rate) on arranged overdrafts, but rates can be higher for newer or riskier businesses. Interest is usually calculated daily on the overdrawn balance and charged monthly.

In addition to interest, you may face several fees:

• Arrangement fee – often 1% to 2% of the facility limit, charged when the overdraft is first set up or renewed
• Annual renewal fee – payable each year when the facility is reviewed
• Non-utilisation fee – some lenders charge a small percentage on the unused portion of the facility
• Unauthorised borrowing charges – if you exceed the agreed limit, penalty interest and fees can be significantly higher

Secured vs Unsecured Overdrafts

Smaller overdraft facilities—typically up to £25,000—are often provided on an unsecured basis, meaning no specific asset is pledged as collateral. For larger limits the bank will usually require security, which might include a charge over business assets, a debenture over the company, or a personal guarantee from the directors.

Providing security reduces the bank’s risk and can therefore lead to a lower interest rate and higher limit. However, directors should think carefully before giving personal guarantees, as these make them personally liable for the debt if the business cannot repay.

Eligibility and How to Apply

To qualify for a business overdraft, lenders will typically assess your business’s turnover, trading history, profitability and creditworthiness. Most high-street banks require at least 12 months of trading history and a business current account held with them. Start-ups may find it harder to obtain overdraft facilities, although some challenger banks and specialist lenders are more flexible.

You will usually need to provide recent filed accounts or management accounts, bank statements for the last three to six months, a cash-flow forecast showing why the overdraft is needed, and details of any existing borrowing.

Alternatives to a Business Overdraft

An overdraft is not always the most cost-effective solution. Depending on your needs, you might consider:

• Invoice finance – release cash from unpaid invoices, ideal if late payment is the main cause of cash-flow gaps
• Business credit card – useful for managing short-term expenses with up to 56 days of interest-free credit
• Short-term business loan – more suitable for a predictable, one-off funding need
• Revolving credit facility – similar to an overdraft but usually offered as a separate product with a fixed term and committed limit

When an Overdraft Makes Sense

A business overdraft is best suited to smoothing short-term cash-flow dips rather than funding growth or capital expenditure. It works well when your income is lumpy—for example, if you receive large but infrequent customer payments—or when you experience predictable seasonal fluctuations.

If you find that your overdraft is permanently drawn at or near its limit, it may be a sign that a longer-term funding solution is more appropriate. A term loan or asset finance arrangement could provide the capital you need at a lower cost than a continually used overdraft.

Get Expert Help

Comparing business overdraft options across multiple lenders can be time-consuming. A business finance broker can do the legwork for you, presenting options that match your requirements and negotiating competitive terms on your behalf. Find a business finance broker through Nesto to discuss your cash-flow needs and find the right solution.