When applying online for an Australian business number (ABN) on behalf of a non-individual entity you can apply for a business tax file number (TFN) at the same time.
If during the ABN application you answer:
The system will register the entity with a business TFN as part of processing the ABN application.
You do not need to register for a TFN as a separate process
Successful applicants will receive written notification of their ABN and TFN.