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Australian Business Number (ABN)

The Australian Business Number (ABN) is a single identifier used for all dealings with the Australian Taxation Office (ATO) and other government departments and agencies.

Businesses need an ABN and GST registration to claim GST credits for any GST paid on goods and/or services you have used in your business.  Where your business invoices for goods or services, you will need to quote your ABN to prevent other businesses from withholding tax from the payment at the highest marginal rate.

Do you need an ABN?

You need an ABN when interacting with the ATO on:

  • GST
  • Diesel and Alternative Fuels Grants Scheme
  • Luxury Car Tax
  • Wine Equalisation Tax
  • If you are applying for an endorsement as a deductible gift recipient
  • If you are applying for an endorsement as an income tax exempt charitiy

You can also use an ABN to interact with the ATO on the PAYG system and FBT. 

Is the ABN Compulsory?

To be entitled to an ABN, you must be a:

  • Company registered under the Corporations Law and business entities carrying on an enterprise in Australia
  • Business with a GST turnover of $75,000 or more
  • Non-profit organisation with a turnover of $150,000+ (for GST purposes)
  • Certain entities (sole traders, companies, partnerships, trusts and superannuation funds)

For further information, see ATO Essentials