Guide
Tax and referral rewards (Australia overview)
High-level notes on declaring referral income - not personal tax advice.
In short: Cash or convertible credits may be assessable income for individuals; businesses may treat rewards as marketing costs. Speak to a registered tax agent for your situation.
Record keeping
Save emails, screenshots, and bank entries showing referral payments and dates.
Are bill credits taxable?
They can still have tax consequences depending on how they are provided; document the value received.