Benefits of a NAB QuickBiz unsecured business overdraft

An unsecured business overdraft revolving facility (line of credit) of up to $50,000, available to new and existing customers, with no fixed repayments. See how it could benefit your business.

Manage your cash flow

Access funds when you need them. You can use it to manage unexpected payments and expenses, expand your business or pay suppliers while waiting for customer payments. 

Pay for what you use

Access the additional funds through your business transaction account and you only pay interest on the outstanding debit balance.

Easy online application with instant decision

Quick online application and approval process so you can focus on your business. Apply online today and receive an instant decision.

Rates and fees

Check out the rates and fees for our unsecured business overdraft.

Variable interest rate

16.00 % p.a.

Interest is calculated daily and only on the funds you’ve used and charged on the last banking day of the month.

Service fee

1.75 % p.a.

The service fee is applied to your approved overdraft amount and is charged on the last banking day of the month.

Minimum overdraft


Maximum overdraft


Most popular
Tap into the features of a NAB Business Visa Debit Card with your business overdraft

Link a card to your business account with an overdraft to pay for expenses online, over the phone or in person.

  • Access your business funds wherever Visa is accepted including online, over the phone and overseas. 

  • Protection against loss from fraud with Visa Zero Liability, opens in new windowNAB Defence and Visa Secure.

  • Discover great deals, discounts and privileges from the Visa network.

Ready to apply?

Apply now for an unsecured business overdraft with our fast online application and receive an instant decision.

Help and support Common unsecured business overdraft questions

Which documents do I need to apply?

You may need to provide a copy of your trust deeds, ATO Online Services Reports and where applicable, personal identification. For all other loan processing, you may also be asked to provide financial information such as bank statements, transaction lists, profit and loss reports and a balance sheet.

How quickly will I receive funds?

Access your funds instantly on a business day once you have received an approval and accepted your loan application documents in Internet Banking.

You might also be interested in

Haven't found what you're looking for? Here are some other  options that can help get your business banking started.

Get in touch

Contact us

Visit our business banking contact page for how-to-guides and FAQs, as well as contact numbers.

Visit a NAB branch

Our business bankers are located all around Australia.

Terms and Conditions

Lending criteria and terms and conditions apply (available on application).

NAB recommends you consider the Product Disclosure Statement or other disclosure document, available from NAB, before making any decisions regarding these products. These products are issued by National Australia Bank Limited ABN 12 004 044 937.

Any advice contained on this website has been prepared without taking into account your objectives, financial situation or needs. Before acting on any advice on this website, NAB recommends that you consider whether it is appropriate for your circumstances.

Target Market Determinations for these products are available at