Online ABN registration for Australian businesses.

Australia's online ABN registration service.


Online registration direct with the Australian Business Register.

Same business day registration

Direct to the Australian Business Register

Processed and reviewed by Licensed Tax Agents

Free local & friendly phone support

Simple and fast

Tax Deductible

Fast and secure ABN registration direct to the Australian Business Register.

3 simple steps to register your ABN

1. Complete the registration

2. Secure online payment by Credit Card

3. Receive an email
confirming your ABN

ABN registration for all Australian businesses. Application takes just minutes.
Business hours support available.

Request your ABN online,
direct to the Australian Business Register.

Fast turnaround

Fast Registration

98% of ABN application submissions have their ABN registered within 12 business hours. Email notification sent when completed.


Registered Tax Agents

Using a tax agent ensures your application will be handled quickly and correctly.


Easy Online Process

Our agents check your online application before submission, ensuring you obtain your ABN quickly, all via our online portal.

Frequently Asked Questions

What is an ABN?

An Australian Business Number (ABN) is a unique identifying number given to Australian businesses. Each business receives their own 11-digit number, identifying them to the government and general public. The ABN is used for a variety of tax and business purposes throughout Australia and having it is essential to legitimise your business, acting as a unique identifier of your business on all documentation.

How to get an ABN?

You can get an ABN through ABN Assist. We have a simple form for you to fill out, making the process quick and easy. Your application will be checked by our registered agents, ensuring that you have completed the form correctly. If any information needs to be corrected, we will be able to assist you, ensuring you get your ABN fast, without headaches.

Do I need an ABN?

An ABN is a necessary part of running a business. The ATO requires all Australian businesses to have an ABN before commencing operations.

Having an ABN will also ensure clients and customers will pay the full amount for your services. Without an ABN, other businesses must technically withhold 46.5% from any payment they make to you.

Obtaining an ABN will also allow you to register for a web address, and register your business name with the Australian Securities and Investments Commission (ASIC).

How to find out what your ABN is?

After you have registered for an ABN and have been approved, you will receive notification of your ABN in an email, followed by an official letter sent via regular post.

If you have misplaced your ABN, you can search for it on ABN Lookup. Click here to find your ABN by searching for your name or your business name.

If you cannot find your ABN, you should contact the Australian Business Register. You also may have to reactivate an ABN when it was cancelled due to inactivity.

How to reactivate an old ABN?

If your ABN has been cancelled, either voluntarily or not, you will need to reactivate it before you re-open your business. You are not allowed to use a cancelled ABN for your general business activities.

In order to reactivate your ABN, just fill our simple form.

How long does it take to get an ABN?

With ABN Assist, you will receive your ABN within one business day from when we confirm your details. We process your application for you, ensuring it is correct, before we process it with the Australian Business Register. This will dramatically reduce any chance of rejection of your application and possible headaches.

Why use a tax agent to get an ABN?

Registering for an ABN through a registered tax agent like ABN Assist will save you a lot of headaches. With ABN Assist all you need to do is fill out a 5-minute form and we will do the rest. We will ensure that all information is correct before we lodge the application on your behalf. This means you will spend less time worrying about your ABN and more time working on your business.

How much does it cost to get an ABN?

We have a flat fee of $80 + GST for a new ABN and includes the optional registrations for GST and PAYG Withholding at no extra cost. Or service includes the assistance of our registered agents, who will check your application before submission and will answer any questions you may have. This fee is also tax deductible.

You can check our pricing in detail by clicking here.

How to update the details of my ABN?

Every day, businesses like yours use the ABN Lookup website to check business details. If your business information is not up to date, other businesses may choose not to deal with yours.

More importantly, you are required to update your ABN details within 28 days of becoming aware of any changes.

In order to make changes, you will need to contact the Australian Business Register. These changes will take effect almost immediately.

Do I need to be an Australian Resident to apply for an ABN?

Non-residents are entitled to receive an ABN. You do not have to be a citizen or resident, however there are some eligibility requirements. All non-residents looking to register for an ABN will be required to provide either an Australian Tax File Number (TFN) or proof of identity documents and a statement of business activities in Australia. Once these are provided and accepted you will become entitled to apply for an ABN.

How to cancel an ABN?

You can cancel your ABN when you cease operating as a business. You will first have to make sure you have met all reporting, lodgement and payment obligations before you cancel your ABN. To cancel your ABN online, click here.

What is the difference between an ACN and an ABN?

An ACN is an Australian Company Number, using only 9 digits. This is for registered companies only.

A company’s ABN will generally be their ACN plus two digits at the beginning. ACNs are issued by the Australian Securities and Investments Commission (ASIC) and they are used to identify companies.

Who is the Australian Business Register (ABR)?

The Australian Business Register is designed to store and verify business information and details for both the public and the government. They are in charge of public services like ABN Lookup which allows you to find other business’ ABNs. When your register for an ABN through ABN Assist we will work with the ABR, registering your business details to their database.