Australian Business Number (ABN)

Businesses in Australia require an ABN number for all dealings with the tax office, government departments and other businesses.

Your Australian Business Number (ABN) is the unique 11-digit identifying number which you'll need to put on your invoices and other sales-related documents. Without an ABN, other businesses can withhold 46.5% from any payments to you.

Your ABN allows you to:

You'll also need an ABN to register for GST in Australia.

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Quick Oz Tax Facts

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