Quick answer
A business overdraft lets your transaction account go below zero, up to an approved limit. It acts as a safety net for short gaps between money going out and coming in, and you generally pay for the amount you're overdrawn. Banks often secure larger overdrafts with property. If an overdraft isn't available or suitable, a business line of credit or an unsecured cash flow facility can do a similar job.
Key points
- Lets your everyday account go below zero, up to a limit
- Designed for short, temporary gaps
- You generally pay for what you use, though fees can apply to the limit
- A line of credit is a close alternative
- Structure
- Limit on your account
- Best for
- Short gaps
- Alternative
- Line of credit
- Enquiry
- No credit check
What is a business overdraft?
An overdraft is the simplest form of business credit there is. Your transaction account normally stops at zero. With an overdraft, it can keep going, down to an approved limit. When money comes in, the balance climbs back up.
Business.gov.au lists overdraft services among the standard debt finance products banks offer. Their appeal is convenience: there’s nothing to draw down or transfer. Pay a supplier, and if the money isn’t there, the overdraft covers it automatically.
When is an overdraft the right tool?
It’s built for short, temporary dips. Think of it as a shock absorber:
- Wages go out a day before a customer payment lands
- A quarterly bill arrives in a slow week
- An unexpected repair comes up between paydays
What it’s not built for is permanent funding. If your account sits at the limit month after month, the overdraft has quietly turned into a long-term loan, usually a more expensive and less stable one.
How should I set the limit?
Use your own bank history. Here’s the 1-2-3:
- Find the dips. Scroll through twelve months of statements and note the lowest balances and when they happened.
- Measure the depth and length. A dip that lasts three days is very different from one that lasts three weeks.
- Cover the usual, not the extreme. Set the limit to handle typical dips. For rare, larger needs, a separate facility often makes more sense.
| Account pattern | Overdraft suitable? | Consider |
|---|---|---|
| Brief dips, quickly back in credit | Yes | — |
| Long, deep seasonal dips | Partly | Line of credit sized to the season |
| Constantly at the limit | No | Term loan or refinance |
What does an overdraft cost to hold?
We don’t publish rates, because pricing is individual. But it helps to know how overdraft costs are usually built:
- Interest on the overdrawn balance, for the days you’re overdrawn
- A limit or facility fee, sometimes charged whether or not you use it
- Establishment and review fees
- Charges for exceeding the limit
Ask for each in writing. A large limit you rarely use can cost more in fees than it’s worth.
If you’d like a specialist to compare an overdraft with a line of credit or a cash flow loan for your business, start a 60-second enquiry. It doesn’t involve a credit check.
Why do some businesses prefer a line of credit?
Overdrafts are mostly a bank product, and banks often want property security for larger limits. Many trading businesses find a line of credit or an unsecured cash flow loan from a non-bank lender easier to obtain, with limits typically between $5,000 and $500,000 sized on turnover.
There’s also a discipline argument. Because an overdraft blends borrowed money with operating cash, it’s easy to lose track of how much you’re relying on it. A separate line of credit keeps the borrowing visible.
What happens if my bank reduces my overdraft?
Overdraft limits are reviewed, and lenders can reduce or withdraw them under the facility terms. If that happens, the shortfall can arrive suddenly. Options include:
- Replacing it with a line of credit from another lender
- Converting the drawn balance into a term loan with set repayments
- Using property-secured lending, from $20,000 to $5,000,000, for larger amounts
Illustrative example only. A family-owned hardware store has relied on the same overdraft for years. After a review, the bank lowers the limit. The store’s busiest months are still ahead, and the stock order is due. Moving to a separate line of credit, sized on the store’s turnover, replaces the lost headroom and gives the owners a clearer view of what they’ve actually borrowed.
Healthy overdraft habits
Business.gov.au’s guide to managing cash flow suggests setting money aside in a separate account for what you owe, such as tax and employee costs. That habit pairs well with an overdraft: you’re less likely to dip into it for predictable bills, and more likely to keep it for true surprises.
Overdraft, line of credit or term loan: a quick decision guide
If you’re still unsure which tool suits, ask yourself three questions:
- Is the gap short and unpredictable? A day here, a week there, at random times. An overdraft’s automatic coverage is ideal.
- Is the gap seasonal or recurring, and larger? It comes back every quarter or every winter, and runs for weeks. A separate line of credit sized to that pattern keeps borrowing visible and easier to manage.
- Has the gap become permanent? If the balance never really comes back, convert that part into a fixed loan with a clear end date and keep a smaller overdraft for genuine surprises.
Many businesses end up using two of these together. A modest overdraft handles day-to-day timing, while a line of credit or cash flow loan handles the bigger, more predictable needs. What matters most is that each facility has a defined job, and that you review them at least once a year against how the business actually trades.
Need a safety net that fits?
The best safety net is one that’s the right size and comes back to zero regularly. We can help you work out whether an overdraft, a line of credit or something else fits best.
Our promise: no credit check when you enquire, a real person who reads your details and phones you, and no broadcasting your information to a pile of lenders. Please give us accurate figures on the form, especially your turnover and how deep your account usually dips, so the first call can be useful. Check your options.
The 1-2-3, in short
- 1
Know your low points
Look at your account balance over a year. Find the deepest dips and how long they lasted.
- 2
Set a sensible limit
Enough to cover the usual dips, not so much that it becomes a permanent loan.
- 3
Watch it come back up
A healthy overdraft swings back into credit regularly. One that never does is a sign you need a different product.
Frequently asked questions
How is an overdraft different from a line of credit?
An overdraft is attached to your transaction account, so your balance simply goes negative. A line of credit is usually a separate facility you draw from. Both are revolving, but costs, reviews and security can differ.
Do overdrafts need security?
Smaller limits may be unsecured, but banks often require property security for larger business overdrafts. Non-bank alternatives such as unsecured lines of credit can be sized on turnover instead.
Can an overdraft be cancelled?
Overdraft limits are commonly reviewed and can be reduced or withdrawn by the lender under the facility terms. Read the conditions so you're not caught short.
What if my overdraft is always maxed out?
That suggests the business has a longer-term funding need. Converting the hardcore part of the overdraft into a term loan can bring the account back to a healthier pattern.