Quick answer
A business overdraft lets your transaction account go below zero up to an agreed limit. You pay interest on the overdrawn balance and usually an ongoing overdraft fee on the limit. It is convenient for short, irregular dips because there is nothing to draw down separately. Overdrafts are typically attached to a bank account, reviewed regularly and often require property or other security for larger limits.
Key points
- The overdraft sits inside your everyday business account, so there is nothing extra to manage.
- Interest applies to the overdrawn balance; a limit fee often applies regardless.
- Best for short, unpredictable dips rather than ongoing funding.
- Unarranged overdrawing without a facility usually attracts extra fees and dishonours.
At a glance
- Structure
- Negative balance allowed on your transaction account
- Typical use
- Short, irregular cash dips
- Security
- Varies; larger limits are often secured
- Costs
- Interest on the overdrawn balance plus account and limit fees
Our review: business overdraft at a glance
What works well
- Automatic: payments clear even when the balance dips
- No separate draw requests or transfers
- Interest only while the account is overdrawn
- Useful buffer against dishonoured payments
What to watch
- Ongoing limit fees whether you use it or not
- Can hide a structural cash flow problem
- Limits are reviewable and can be reduced at short notice
- Often tied to one bank, making it harder to move accounts
Usually suits
- Established businesses with irregular but short dips
- Owners who want payments to clear on tight days
- Businesses already banking with the lender
Probably look elsewhere if
- The account is overdrawn most of the month
- You need funds for a fixed asset or a long project
- You would rather keep borrowing separate from everyday banking
The overdraft is the oldest piece of business finance most owners have, and often the least examined. It sits quietly behind the transaction account, catching the days when a supplier debit lands before a customer payment does. For that job it is excellent. The trouble starts when the overdraft stops catching the occasional dip and starts carrying the business.
How a business overdraft works
An overdraft is an arrangement that lets your business transaction account go into a negative balance, up to a set limit. When money comes in, it automatically reduces the overdrawn amount. Interest is charged on the negative balance, usually calculated daily, and many facilities add a monthly or annual fee on the approved limit. There is generally no fixed repayment schedule, but the bank reviews the facility, often annually, and expects the account to move back into credit regularly.
Because the facility is attached to your everyday account, it is almost invisible in daily use. That convenience is its main selling point and its main danger.
Where an overdraft earns its keep
- Timing mismatches. Rent and wages go out on the first, customer payments arrive on the fifth.
- Unexpected bills. A repair or a larger-than-expected supplier invoice.
- Avoiding dishonours. A small buffer stops direct debits from bouncing, which protects your record with suppliers and the conduct shown in your bank statements.
If your dips are predictable and larger, a line of credit can be more flexible and is not tied to the transaction account. If customer payment terms are the root cause, invoice finance grows with your sales.
The costs people overlook
| Cost | Why it matters |
|---|---|
| Interest on the overdrawn balance | The obvious cost, charged daily on the negative balance |
| Limit or facility fee | Charged on the full limit, used or not |
| Establishment and review fees | Some facilities charge at setup and at each review |
| Over-limit and dishonour fees | Triggered when payments exceed the limit |
| Security costs | Valuation and legal fees if property secures the limit |
Add them together over a year and compare with how much you actually used the facility. A large limit that is rarely touched can be an expensive form of insurance.
The warning signs of overdraft dependence
An overdraft that never returns to credit is no longer bridging a gap; it is funding a shortfall. Lenders reading your statements will notice an account that sits near its limit, and it can count against you when you apply for other finance. Our guide on how lenders read bank statements explains what they look for. If your account is overdrawn most of the month, look at the cause with your accountant, and consider moving the hard-core balance into a term facility through working capital finance so the overdraft can go back to its proper job.
What to check in an overdraft offer
- The limit, the interest calculation and every fee, including the limit fee.
- Whether the facility is secured, and over what.
- The review date and the conditions that allow the bank to reduce or cancel it.
- Whether the overdraft requires you to move other banking to the same lender.
- What happens to the facility if you change accounts or banks.
Is an overdraft the right buffer for you?
For an established business with occasional, short dips, an overdraft can be the simplest buffer available. If your gaps are bigger, longer or more regular, another facility may cost less and give you more control. To talk through which suits your cash cycle, make one enquiry. There is no credit check when you first enquire and your details go to one lending partner, not a list. Tell us how often your account dips and by roughly how much, and you will get a more useful answer. You can also run the cash flow gap calculator first and bring the result to your enquiry.
Frequently asked questions
Is a business overdraft the same as a line of credit?
They do a similar job. An overdraft is built into your transaction account, while a line of credit is usually a separate facility that you draw from. Fees and assessment differ, so compare the full cost of each.
What happens if I go over my overdraft limit?
Payments may be dishonoured and the bank may charge over-limit or dishonour fees. Repeated dishonours appear in your bank statements, which other lenders read closely, so avoid running at the limit.
Can I get an unsecured business overdraft?
Smaller limits are sometimes available unsecured for established customers with steady trading. Larger limits more often need security such as property or a general security agreement.
Do overdrafts need to be repaid?
There is often no fixed repayment schedule, but the facility is reviewed and can be reduced or cancelled. Lenders also expect the account to swing back into credit regularly rather than stay overdrawn.
Sources and further reading
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