Apply for a StepPay account with CommBank between 06/10/2021 and 30/11/2021, and spend $100 or more in a single transaction on the StepPay account by 30/11/2021 to receive $20 cashback.
FWIW, they may perform a credit check.
Terms:
Offer available to new StepPay customers applied for between 06/10/2021 and 30/11/2021. To be eligible for the $20 cashback you need to spend $100 or more in a single transaction on your new StepPay account by 30/11/2021. Cashback will be credited directly to your StepPay account within 90 days of you meeting the spend criteria and will appear on your transaction history as 'STEPPAY20'. Limit of one cashback payment per customer. Offer available to new StepPay accounts, you will not be eligible if you currently hold or have held a StepPay account. You will be ineligible for the cashback if your account is closed or in default at any time prior to the cashback being credited to your account.
A credit check; for a $20 credit - no thanks.