From and including 28 May 2012, it is compulsory for an Individual/Sole Trader such as this one, to either have an ABN, or to have applied for an ABN, in order to apply to register a business name cf. section 23(2)(a)(ii) of the Business Names Registration Act 2011. An ABN may be applied for on this page of the ABR Government Website run by the Australian Taxation Office: abr.gov.au/For-Business,-Super-funds---Charities/Applying-for-an-ABN/.