Benefits of a NAB unsecured business overdraft

An unsecured overdraft facility of up to $50,000, available to new and existing customers. See how it could benefit your business.

Easy online application and instant decision

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

Fast access to funds

Existing NAB customers can log into internet banking and access funds instantly if approved. New to NAB customers will have access to funds within one business day from the receipt of signed contract.

Control over your cashflow

Access your additional funds (line of credit) through your NAB Business Everyday Account and only pay interest on the outstanding debit balance.

Rates and fees

Check out rates and fees for your NAB QuickBiz Overdraft.

Variable interest rate

13.00 % p.a.

Calculated daily and only on the funds you’ve used (charged on the last banking day of the month).

Service fee

1.75 % p.a.

Of your approved overdraft amount (charged on the last banking day of the month).

Minimum overdraft


Maximum overdraft


Link an everyday business account

You need a NAB Business Everyday Account to link to your overdraft. You can either link to your existing NAB business transaction account or apply for a new account from the options below.

Existing NAB Business Account?

Applying is even easier. Simplify your application by linking your new overdraft to your existing NAB business transaction account.

$0 NAB Business Everyday Account

Only pay for what you need with our $0 monthly fee account. Get unlimited free electronic transactions and pay as you go for in-branch transactions.

$10 NAB Business Everyday Account

Enjoy a low cost account with a $10 monthly account fee. Ideal for businesses that make a large number of cash and cheque transactions.

Specialised How a hassle-free QuickBiz unsecured business overdraft can help

  • Cover unexpected business expense

  • Manage business cashflow

  • Pay for supplier invoices

  • Help you pay staff wages

  • Purchase inventory and equipment

Apply online
How to apply online for a NAB QuickBiz unsecured business overdraft

Step 1. Check your eligibility

You're eligible to apply online if your business is registered for GST, has an active ABN and an annual turnover of $75,000 or more.

Step 2. Apply online in 20 minutes

Apply online in as little as 20 minutes and get an instant decision. Log into NAB Internet Banking to apply or use our easy online application.

Step 3. Receive your finance

Once we receive your signed documents, you'll receive your finance. For existing customers you can draw down on funds instantly where eligible , and new NAB customers can access funds in one business day .

Other ways we can help

Use our help guides, FAQs and other support services to help you manage your banking more easily.

Contact us

Request a call back

Let us help you with your business banking needs.

Call us

Call us for your general enquiries about business banking.

Visit a NAB branch

Use our locations tool to find business banking services.

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.