Too hard basket for the average tax payer, but I'm just paid the current tax bill by cc tonight, paying an extra $719.29 + cc fee ($14.71). My question is how we have two seperate tax accounts (PAYG job / rental), can I just use our PAYG bpay details without any issues? ie: Debt collectors letter for not paying our tax (rental), when in fact we did pay our tax (extra $ in PAYG each month!) How to pay Link above suggests the quickest & easiest way to pay your tax: "Make sure you provide the correct unique payment reference number (PRN) in the reference field every time you make a payment. This guarantees your money goes to the right account without delay". Is there another PRN for rental tax payments? As I've tried looking everywhere on the website between each account we have, but no luck other then the PAYG account bpay reference.