In a nutshell
A business overdraft is a limit attached to a business transaction account that lets the balance go below zero up to an agreed amount. Interest is charged only on the overdrawn balance, and the limit is usually reviewed each year. Overdrafts are traditionally a bank product, often secured against property, and suit short, recurring dips in cash rather than long-term borrowing.
Key points
- Built into your transaction account; the balance simply goes negative.
- Interest only on the overdrawn amount; fees may apply to the limit.
- Usually reviewed annually and can be reduced or withdrawn.
- Banks commonly want property security for anything beyond a small limit.
- Where it lives
- Transaction account
- Interest on
- Overdrawn balance
- Review
- Usually annual
- Common security
- Property or GSA
The overdraft is the oldest working-capital tool in Australian banking. It’s simple — your account can go into the red up to a set limit — but its simplicity hides a few things worth understanding, particularly how reviews work and why limits sometimes shrink at the worst moment.
How does a business overdraft work day to day?
An overdraft is attached to your everyday business account. When your balance falls below zero, you’re using the overdraft; when deposits come in, they automatically reduce what you owe. There is no separate draw request and no separate account to manage.
Interest is calculated on the daily overdrawn balance and charged periodically. Many overdrafts also carry an establishment fee and a regular fee on the limit itself, whether or not you use it.
What do banks need before approving one?
Traditional overdrafts are a bank product, so bank credit standards apply:
- financial statements and tax returns, often for two years;
- a record of the business account’s conduct;
- security — frequently a mortgage over property for anything beyond a small limit, and sometimes a general security agreement over business assets;
- personal guarantees from directors.
That’s the main reason many small businesses without property find an overdraft hard to obtain and turn to a non-bank line of credit sized on turnover instead.
Why do overdrafts get reviewed — and reduced?
Most overdrafts are on-demand or reviewed at set intervals, commonly each year. At review the lender looks at updated financials, how the facility has been used and the value of any security. Outcomes include renewal, a higher or lower limit, new conditions or, occasionally, cancellation.
| Review signal | How a lender tends to read it |
|---|---|
| Balance swings between drawn and in credit | Healthy working-capital use |
| Balance permanently near the limit | “Hard-core” debt that may need converting to a term loan |
| Frequent overlimit events | Cash flow under strain |
| Weaker profit in latest accounts | Possible limit reduction or tighter conditions |
| Lower property valuation | Less security cover for the same limit |
A facility sitting fully drawn for months is the classic trigger for a reduction. If that describes yours, part of the balance may be better moved into a term loan so the overdraft returns to its real job. You can ask a specialist how to restructure it.
Overdraft vs line of credit
Both are revolving, both charge interest on what you use, and both may have fees on the limit. The differences are practical:
- Location. An overdraft lives inside your transaction account; a line of credit usually sits beside it.
- Provider. Overdrafts are mostly bank products; lines of credit are widely offered by non-banks.
- Security. Bank overdrafts lean on property; non-bank lines are often unsecured and sized on turnover.
- Visibility. A separate facility makes it easier to track how much you’ve borrowed.
Our side-by-side comparison covers cost and flexibility in more detail.
What are the alternatives if you can’t get an overdraft?
- An unsecured line of credit from a non-bank lender.
- Invoice finance if the gap comes from slow-paying business customers.
- A short working capital loan for a one-off gap.
- A property-secured facility if you have equity and need a larger limit.
How do you keep an overdraft healthy at review?
Lenders reviewing an overdraft want to see a facility used for its intended purpose. Before your review date:
- Get your year-end accounts finished early, so the lender isn’t working from stale numbers.
- Bring the balance down where you can, showing the limit is used for swings rather than permanent funding.
- Explain any dips in profit or unusual transactions in a short note, rather than letting the lender guess.
- Ask about the security value if property prices in your area have moved.
- Consider restructuring any hard-core balance into a term loan before the lender suggests it.
A little preparation often turns a potential reduction into a straightforward renewal.
Terms used in this entry
- Limit — the maximum negative balance the account can reach before payments are declined or overlimit fees apply. Glossary →
- On-demand facility — one the lender can, under the contract, ask to be repaid or reduced at short notice. Glossary →
- Hard-core debt — the part of an overdraft balance that never clears, which usually belongs in a term loan. Glossary →
- Annual review — the lender’s periodic look at your accounts and conduct before renewing the facility. Glossary →
Every term is defined in the business finance glossary, with links back to the full entries.
Worked example (illustrative)
Illustrative only. A plumbing business has held an overdraft for years. Two slow quarters left it sitting close to the limit for most of the year, and at review the bank asked for the limit to be reduced over six months.
Rather than squeeze wages and supplier payments, the owner moves the persistent portion of the balance into a term loan repaid over several years and keeps a smaller overdraft for day-to-day swings. The bank sees the facility behaving as intended again, and the business has predictable repayments on the debt that had become permanent.
Want a revolving limit that fits how your business actually runs?
Whether you need a new overdraft, a line of credit instead, or a way to restructure a facility that’s been squeezed, a specialist can map out what’s realistic. The enquiry takes about 60 seconds, with no credit check when you first enquire and no blasting your details to multiple lenders. A real person reads your situation and calls you. Please describe your current limits and balances as accurately as you can so we can find the right fit first time.
Frequently asked questions
Can I get a business overdraft without property?
Small unsecured overdrafts exist, but banks commonly ask for property or other security for larger limits. Non-bank lines of credit sized on turnover are a common alternative for businesses without property.
What happens if I go over my overdraft limit?
Payments may be declined or honoured with overlimit fees, and repeated overlimit use can count against you at review. Talk to the lender before it happens if you can see it coming.
Why did my bank reduce my overdraft?
Common reasons include weaker financials at review, the facility sitting fully drawn for long periods, changes in the bank's appetite for your industry, or a fall in the value of the security.
Is an overdraft cheaper than a line of credit?
Not necessarily. It depends on the lender's pricing, the fees on the limit and how you use it. Compare the total cost based on your realistic drawn balance through the year.