Spend $100 or more in one transaction at Big W online using your Zip account to earn $20 cashback towards your Rewards goal. Redeemable when you reach the Rewards goal. 1 redemption per Customer. Promotion starts 12:01am AEST 30 August 2021 and ends 11.59pm AEST 5 September 2021. Reward Program T&C’s apply.