
The Australian Business Number (ABN) is a unique 11-digit identifier that is issued to businesses in Australia for tax and other business purposes. The ABN was introduced on 1 July 2000 as part of a major tax reform. It is required for businesses to make transactions and be eligible for the Goods and Services Tax (GST). The ABN enables businesses to interact with all levels of government using a single identification number, and it is often needed to access certain government services and grants.
| Characteristics | Values |
|---|---|
| Number of digits | 11 |
| First two digits | Checksum |
| Issued by | Australian Business Register (ABR) |
| Maintained by | Registrar of the ABR, who is also the Commissioner of Taxation |
| Purpose | Identification of business to the government, other businesses and the public |
| Registration | Free |
| Registration requirements | Running a business or other enterprise |
| Registration time | 20 business days |
| Registration outcome | Confirmation or refusal letter within 14 days |
| Registration contact | Australian Taxation Office (ATO) |
| Registration website | ABR website |
| Registration information | Information about business structure and nature |
| Registration frequency | One ABN for businesses under the same structure |
| Use cases | Tax purposes, opening a business bank account, accessing government services |
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What You'll Learn

ABN registration
The Australian Business Number (ABN) is an 11-digit identifier for businesses in Australia. It is a single identification number that businesses can use to deal with various government departments and agencies. The ABN is issued by the Australian Business Register (ABR), which is operated by the Australian Taxation Office (ATO).
Not everyone needs or is entitled to an ABN. To get one, you must be running a business or other enterprise. You can check if you are entitled to an ABN on the ABR website.
The ABN registration process is handled by the ABR, and registration is free. Before registering, ensure that you have all the necessary information about your business. You can apply for an ABN on the ABR website, and you will receive your ABN as soon as you complete your online application.
If your application is successful, you will receive a letter within 14 days to confirm your ABN. You can check ABN Lookup at any time to see if your ABN has been processed. If your application is unsuccessful, you will receive a refusal number and a letter within 14 days confirming the refusal and outlining the reasons for it.
If your business structure changes, you may need to apply for a new ABN. You must also update your ABN details within 28 days of becoming aware of a change.
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ABN Lookup
The ABN Lookup website allows users to validate ABNs, pre-fill forms, and keep ABN details stored in a database up to date. It is also possible to check ABN details and perform multiple ABN searches using the ABN Lookup tools.
The ABN Lookup service provides information such as the business's registered name, address, and contact details. It also includes the business's ABN number, which is a unique 11-digit identifier issued by the ABR. This number is used by businesses to deal with government departments and agencies and is required to appear on tax invoices and other tax-related documents.
To register for an ABN, businesses must provide information such as their business structure, business name, and contact details. This information is then made publicly available through the ABN Lookup service. It is important to note that changing the business structure may require applying for a new ABN and updating the business name details with the Australian Securities and Investments Commission (ASIC).
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ABN application process
The Australian Business Number (ABN) is an 11-digit identifier issued to entities registered in Australia. It is used for tax and other business activities and allows businesses to deal with government departments and agencies with a single identification number. The ABN is issued by the Australian Business Register (ABR), which is operated by the Australian Taxation Office (ATO).
Before applying for an ABN, it is important to ensure that you are entitled to one. Not everyone needs or is eligible for an ABN. You must be running a business or other enterprise to be eligible. The ABR website provides information on eligibility.
The ABR is responsible for the ABN application process and manages the registration. Applications can be made online or via a paper application, and there is no fee for applying. Before registering, ensure that you have all the necessary information about your business.
If your application is successful, you will receive a confirmation letter within 14 days. Your ABN will also be made publicly available on the ABN Lookup website. If your application is refused, you will receive a refusal number and a letter within 14 days outlining the reasons for the refusal and your review options.
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ABN registration requirements
An Australian Business Number (ABN) is a unique 11-digit number that identifies your business or entity to the government and community. It is used for various business purposes, such as invoicing, tax obligations, and registering for other business licenses and permits. Obtaining an ABN is an important step for any business operating in Australia, as it helps streamline tax and business dealings and can provide access to benefits and concessions.
To be eligible for an ABN, you must be carrying on or starting an enterprise in Australia. This includes businesses, companies, sole traders, and other entities. There are specific requirements that must be met to obtain an ABN, and these differ depending on the structure and nature of your business.
For example, if you are a sole trader, you must be a resident of Australia and have commenced your business. You will need to provide your Tax File Number (TFN) and other personal details. If you are a company, you must be registered with the Australian Securities and Investments Commission (ASIC) and provide your Australian Company Number (ACN). Additionally, you must demonstrate that your business is actively operating or has the intention to operate. This can include providing evidence of sales, marketing activities, or a business plan.
Other requirements include ensuring your business is registered for the correct tax obligations. This may include Goods and Services Tax (GST), Pay As You Go (PAYG) withholding, and Installment Activity Statement (IAS) if your business turnover is above the GST registration threshold. You will also need to provide accurate and up-to-date information about your business structure, activities, and contact details.
It is important to maintain your ABN details and update the Australian Business Register (ABR) if any changes occur. This includes changes to your business structure, contact details, or business name. Ensuring your ABN details are current helps maintain your business legitimacy and avoids any potential penalties for providing false or misleading information.
By understanding the specific requirements for your business structure, you can ensure a smooth ABN registration process and take advantage of the benefits an ABN provides for your business operations in Australia.
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ABN registration for non-residents
An Australian Business Number (ABN) is a unique 11-digit identifier that simplifies the process of dealing with the Australian Tax Office (ATO) and other government agencies. It is used to identify a business or organization for various tax and legal purposes and simplifies the process of dealing with the government, suppliers, and customers. All businesses operating in Australia are required to have an ABN, and this includes non-residents who are carrying on an enterprise in the country.
If you are a non-resident and want to register for an ABN, you must first ensure that you meet the eligibility criteria. To be eligible, you must be carrying on an enterprise in Australia, which generally means you are running a business or commercial activity with the intention of making a profit. You must also be a non-resident for tax purposes, which means you do not live in Australia and are not an Australian citizen or permanent resident.
The registration process for non-residents is the same as for Australian residents. You can apply for an ABN online through the Australian Business Register (ABR) website. During the application process, you will need to provide information such as your name, contact details, the nature of your business activities, and the goods or services you will be providing in Australia. You may also need to provide additional documentation to support your application, such as a passport or visa details.
It is important to note that registering for an ABN as a non-resident does not automatically grant you permission to work or conduct business in Australia. You must still comply with all relevant visa and immigration requirements. Additionally, having an ABN does not automatically register you for goods and services tax (GST). If your business turnover reaches the GST registration threshold, you will need to register separately for GST.
As a non-resident with an ABN, you will have certain tax obligations, including the need to lodge an income tax return and make payments to the ATO. The specific requirements will depend on the nature of your business activities and your residency status for tax purposes. It is recommended to seek professional advice to ensure you understand your tax obligations and comply with all relevant laws and regulations.
By understanding the requirements and obligations, non-residents can successfully register for an ABN and comply with Australian business and tax laws, ensuring a smooth and successful business operation in the country.
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Frequently asked questions
An Australian Business Number (ABN) is a unique 11-digit identifier issued to businesses in Australia. It is used for tax purposes and other business activities.
The ABN is issued by the Australian Business Register (ABR), which is operated by the Australian Taxation Office (ATO).
If you run a business in Australia, you will likely need an ABN. This includes sole traders, partnerships, companies, and trusts.
You can apply for an ABN through the ABR. It is free to register, and you can do so online or via a paper application. You will need to provide information about your business, and your application will be reviewed within 20 business days.











































