5.7K views | Lots of students get confused with this one  ABN (Australian Business Number) : It's a unique number for businesses in Australia. If you run a business, you need this number to deal with the government and other businesses. TFN (Tax File Number) : It's a personal number for tax purposes. You get one as an individual to pay taxes and deal with the government. Folllow for more @overseasstudentsaustralia | Overseas Students Australia | Facebook