To add the ATO as a Bpay payee, you will need to head to the Payees tab from the left hand-side of your dashboard.
1) Select Add Payee > Supplier
2) Enter the details on the following pop-up window
3) In the ABN and business name field, type in Australian Taxation Office, or enter the ATO ABN: 51824753556
4) Select Bpay and enter the Biller Code and your CRN/PRN number as displayed on your ATO payment slip
5) Once all details are entered, select Save.