Should you get a bank or non-bank business overdraft in Australia?

When Australian SME owners think about a business overdraft, they almost always think of their bank first. It makes sense - you already have an account there, you have a relationship, and the rates sound better. But for the majority of Australian small businesses, the bank is not actually an option. Here's the honest comparison your bank won't write for you.

Written and reviewed by John Pierre Saliba, Director and Senior Finance Broker, MFAA Accredited. Last reviewed 18 September 2026.

If you can meet the documentation, security and time requirements, a bank overdraft is cheaper. Most Australian SMEs cannot - so the practical choice is a non-bank overdraft: 6 months of bank statements, no property security under $150,000, rates of 14.55% to 25% p.a. on the drawn balance, and decisions from 1 hour.

Where each bank stands

All four major banks offer business overdrafts: CBA, NAB, ANZ and Westpac, along with second-tier banks like Judo. Each pairs a traditional full-documentation overdraft with a faster digital product at lower limits - and most young or low-doc SMEs will not qualify with any of them. The full bank-by-bank breakdown (security, documents, approval time and rate bands, with links to each bank's own page) lives in our 2026 business overdraft lender guide.

The Fundamental Difference

A bank business overdraft is linked directly to your existing business transaction account. It is assessed by the bank's credit team using your full financial history with them, your tax returns, your BAS statements and often your property portfolio. It is the cheapest option - but also the hardest to access.

A non-bank business overdraft (also called an unsecured business overdraft or business line of credit) is provided by a specialist lender outside the banking system. It is assessed primarily from your bank statements. It moves faster, asks for less, and approves more businesses - at a higher interest rate.

Head-to-Head Comparison

Why Most SMEs Can't Get a Bank Overdraft

The banks' business overdraft products look attractive on their websites. Low rates, instant decisions (sometimes), linked to your existing account. But the eligibility criteria are far stricter than most SME owners realise:

• You need to be their existing customer - most banks require you to already hold a business transaction account with them
• You need perfect tax compliance - overdue BAS, lodgements or ATO debts are typically automatic declines
• You need 2+ years of clean financials - most banks want 2 years of profitable trading with full financial statements
• You need property - for facilities above $50K - $100K, most banks want residential or commercial property as security
• You need a strong credit score - the banks' credit models are far stricter than non-bank lenders

If your business is 18 months old, has managed ATO debts, doesn't own property and has an Equifax score of 580 - the bank will say no. A non-bank lender will almost certainly say yes.

The Rate Argument - Why Higher Rates Are Often Irrelevant

Non-bank overdraft rates of 14-30% p.a. sound high compared to bank rates of 8-15%. But this comparison only matters if you can actually get a bank overdraft. For most SMEs, you cannot. See our non-bank overdraft lenders compared for a detailed breakdown of who offers what.

More importantly, you only pay interest on what you draw. An overdraft of $100,000 sitting unused costs you nothing but the line fee. If you draw $20,000 for 30 days at 20% p.a., the cost is approximately $330. That's the cost of maintaining your cash flow, paying wages on time and not losing a contract because you couldn't fund materials.

The real question is not "what's the rate?" It's "what does running out of cash actually cost my business?"

Note that nearly all non-bank facilities are offered without property security. That product is covered in detail in our unsecured business overdraft guide.

When to Use a Bank Overdraft

• You have been banking with the same bank for 5+ years
• Your financials are immaculate and fully lodged
• You have no ATO debts or credit issues
• You own property you are willing to use as security
• You can wait 4-8 weeks for approval
• You need a very large facility (above $500K)

When to Use a Non-Bank Overdraft

• You need funds in days, not weeks
• You don't have full financial statements or tax returns ready
• You have an ATO payment plan in place
• Your credit score is below the bank's threshold
• You don't own property or don't want to use it as security
• Your business is less than 2 years old
• You've already been declined by a bank

Can You Have Both?

Yes - and many established businesses do. A bank overdraft linked to their main transaction account for day-to-day operations, and a non-bank line of credit for larger or faster cash flow requirements. Used together, they give maximum flexibility at the best overall blended rate.

The cost difference - is it worth it?

Non-bank lenders charge higher rates than banks. This is simply the price of accessibility - lower requirements, faster decisions and simpler processes come at a cost. For most SMEs the question isn't "which has the lower rate?" but "which will actually approve my application, and what does the total cost look like over the period I'll actually use it?" A bank rate that takes 4 weeks to approve costs you 4 weeks of missed opportunity; a non-bank facility available in 24 hours, used for 60 days and repaid, may cost less in practice. Model the real numbers in the business overdraft calculator.

Frequently asked questions