Quick answer
Banks usually refuse a business overdraft increase because the account history shows the existing limit is used as permanent funding rather than a buffer, or because trading and security don't support a bigger revolving limit. Ask for the general reason, then look at converting the hard-core balance to a term loan, invoice finance, a secured line of credit or a non-bank overdraft.
Key points
- An overdraft that sits near its limit month after month looks like long-term debt to a bank, not a buffer
- The refusal is about the facility type as much as your business, so a different structure often gets a yes
- Under the Banking Code, banks generally give at least 30 days' notice before unfavourable changes to a facility, other than rate or repayment changes
- Converting the stuck portion to a term loan can free the overdraft to do its real job again
- Invoice finance and non-bank overdrafts grow with turnover in a way a fixed bank limit can't
Pull up the last twelve months of your business account and find the lowest balance in each month. If most of those low points are still deep in the red, you already know most of what the bank’s credit team saw when it said no to a bigger limit.
That isn’t a criticism. Plenty of healthy businesses drift into using an overdraft as permanent working capital, because it’s convenient and it’s already there. But banks price and approve overdrafts as short-term swing facilities, and a limit that never swings back is the most common reason an increase gets knocked back.
What did the bank actually see?
An overdraft review is mostly an account-conduct exercise. The bank has a perfect view of how you’ve used the facility, so it relies on that more heavily than on your projections.
| Signal in your account | How a bank tends to read it |
|---|---|
| Balance rarely comes back towards zero | The limit has become term debt in disguise |
| Days over the approved limit | Cash flow is tighter than the limit suggests |
| Dishonoured or returned payments | Pressure on cash, and possible strain with suppliers |
| Turnover lower than in the last BAS cycle | Less income to support a larger revolving limit |
| Regular repayments to other lenders | Debt that isn’t in the bank’s own figures |
| Tax or super payments arriving late | Cash is being stretched across obligations |
There’s also a structural reason. Banks have to hold capital against the full overdraft limit they commit to, whether you use it or not. The Reserve Bank’s 2018 work on small business finance noted that banks had far fewer exposures to small businesses through facilities like overdrafts and guarantees than to large companies. A bigger limit is a bigger standing commitment, and banks are choosy about handing those out.
Is your existing limit at risk?
Usually not immediately, but it’s worth knowing where you stand. Many business overdrafts are set for a review period, often a year, and some are expressed as repayable on demand. Your facility letter will say which.
For small businesses covered by the Banking Code of Practice, banks generally commit to giving at least 30 days’ notice before making an unfavourable change to a facility’s terms, other than changes to interest rates or repayments, and shorter notice can apply where there’s a material and immediate risk. The Code also requires banks to give the general reason when they decline a loan, unless it would be reasonable not to. So two calm questions for your banker are worthwhile: what was the main reason for the refusal, and is anything changing on my current facility?
If the answer to the second is “no change”, you have time to restructure properly rather than in a hurry.
Five alternatives worth comparing
The refusal is often about the product, not the business. The same need dressed in a different structure can get a straightforward yes.
- Term out the stuck balance. Ask the bank, or another lender, to move the hard-core portion of the overdraft into a business term loan with scheduled repayments. The overdraft drops back to a swing facility, and the bank sees debt reducing. Many banks will consider this even after refusing an increase.
- Fund your debtors directly. If the overdraft mostly carries unpaid customer invoices, invoice finance advances against those invoices and grows as your sales grow. A fixed bank limit can’t do that. Our invoice finance vs overdraft comparison sets out the trade-offs.
- A non-bank overdraft or line of credit. Some fintech lenders offer overdraft-style facilities drawn into your existing bank account. Shift, for example, states on its website that business overdraft limits run from $10k to $2m, with limits under $500k assessed from linked bank account data (as at October 2026). See our business line of credit page.
- A line of credit secured by property. If you own property with spare equity, a secured line of credit can provide a larger revolving limit than an unsecured overdraft, at a lower cost than unsecured options.
- A short-term loan for a specific spike. If the increase was meant to cover one event, such as a bulk order, a quarterly tax bill or building stock for a busy season, a short-term business loan sized to that event avoids carrying a bigger limit all year.
Want a second opinion on which of these suits your account history? Send us the limit, the shortfall and what drives it. It’s a quick form, and asking won’t touch your credit score.
How big should the facility be?
Before you ask anyone for a new limit, size it from your own numbers rather than from what feels comfortable. Take your monthly low points and high points for the last year. The gap between the deepest low and a normal month is roughly your genuine swing need. Anything permanently drawn underneath that is structural debt and belongs in a term product.
Our cash flow gap calculator helps you estimate the swing from your receivables and payables cycle, and the working capital ratio calculator shows how the balance sheet looks to a lender.
An example of the restructure
Consider an illustrative wholesale business with an $80k overdraft. Over the past year its balance has never been better than $65k overdrawn, and in peak months it presses against the limit. The owner asks for $150k and the bank declines.
Looking at the pattern, about $65k is permanent and only $15k actually swings. The owner then:
- Asks the bank to convert $60k into a three-year term loan. The bank agrees, because scheduled repayments reduce its exposure over time.
- Leaves the $80k overdraft in place, which now has about $75k of real headroom.
- Sets up invoice finance over its trade debtors to cover the seasonal peak, which grows with sales instead of needing another limit request.
The business ends up with more usable working capital than the $150k overdraft it originally wanted, and the bank’s view of the account improves month by month.
What to avoid after a refusal
- Covering the gap with personal credit cards. It works for a week and then muddies both your business and personal files.
- Letting the account bounce. Dishonours after a refusal reinforce the bank’s concern and make every alternative lender more cautious too.
- Stacking several online loans. Daily or weekly repayments from multiple lenders drain the same account the overdraft relies on. Our page on online loan stacking explains the spiral.
- Paying the ATO late to free up cash. Overdue tax debt can affect your credit standing and your options. If tax is the pressure point, see ATO debt business loans.
Getting the working capital you actually need
An overdraft refusal often marks the moment a business has outgrown a single revolving limit. The fix is usually a better mix of facilities: some term debt, something that tracks sales, and a smaller buffer that genuinely swings.
That mix is what we help put together. Tell us your current limit, how it’s been used and what the extra headroom is for. You’ll spend around a minute on the form, and it runs no check on your credit history. We won’t spray your details across dozens of lenders, either: one specialist reads it, then phones you to talk it over. Give us honest figures on the balance pattern, because that detail decides which structure will fly.
Frequently asked questions
Why did my bank refuse to increase my business overdraft?
Common reasons are a balance that rarely returns towards zero, days spent over the limit, dishonoured payments, falling turnover in recent BAS figures, or not enough security to support a larger revolving limit. Banks also hold overdraft limits as committed exposure even when they're unused, so they ration them carefully.
Can the bank reduce or cancel my existing overdraft after refusing an increase?
It depends on your facility terms. Many business overdrafts are reviewed annually and some are repayable on demand. For small businesses covered by the Banking Code, banks generally commit to at least 30 days' notice of unfavourable changes other than interest rates or repayments, though shorter notice can apply where there's a material and immediate risk. Read your facility letter.
What is a hard-core overdraft balance?
It's the part of your overdraft that never really gets repaid, the lowest point your balance reaches across a month or quarter. If your lowest point is $70k drawn on an $80k limit, the bank sees $70k of effectively permanent borrowing sitting in a facility designed for short swings.
Is a line of credit from a non-bank the same as an overdraft?
Similar in use, different in mechanics. A non-bank line of credit is usually a separate account you draw into your transaction account, rather than your transaction account going negative. Limits are often assessed from linked bank data, and costs are typically higher than a bank overdraft.
Should I move banks to get a bigger overdraft?
Possibly, but a new bank will see the same account history. Fix the pattern first, by moving the hard-core balance into a term loan or by funding debtors separately, and the next application to any bank looks much stronger.