How to get and use an ABN as a support worker
Learn how to get a free ABN as an independent NDIS support worker, register as a sole trader, quote it on invoices, and keep it active. Plain-English guide.
What an ABN actually is
Why you need one to work independently
How to apply — step by step
Business name vs trading under your own name
Quoting your ABN on invoices
ABN vs TFN — what's the difference?
Keeping your ABN active
Putting it together
Frequently asked questions
Is it free to get an ABN?
Yes. Applying directly through the Australian Business Register (abr.gov.au) is completely free. Third-party services may charge a fee to lodge the same application for you, but you don't need them. Most sole trader applications are straightforward and many are approved on the spot, with the ABN issued immediately.
Do I need to register for GST when I get an ABN?
No — they're separate. An ABN identifies your business; GST registration is only required once your business income reaches the ATO's registration threshold. Most new independent support workers aren't there yet, so they hold an ABN without being registered for GST. Check the current threshold on the ATO website rather…
Do I need a registered business name?
Not necessarily. As a sole trader you can trade under your own personal name using just your ABN, which is free. You only need to register a business name if you want to trade under something different, like a brand name. That registration is a separate step with its own fee and doesn't replace your ABN.
What's the difference between an ABN and a TFN?
Your Tax File Number is your personal identifier with the ATO, held for life. Your ABN identifies your business. As a sole trader you use both — your ABN on invoices and business dealings, and your TFN for personal tax, since your business income is reported in your personal tax return. Sole traders don't get a…
Can my ABN be cancelled if I don't use it?
Yes. The ABR can cancel ABNs that appear inactive — for example, if no business income has been reported for a long time with no sign of ongoing activity. Keep your details current and make sure your ABN reflects genuine trading. If it's ever cancelled, you can usually reapply or reactivate it.