Looks like this deal is back again.
ING are running a promotion where existing account holders can refer new accounts and both will receive $50.
Here's the content from my recent email:
What your friends need to do by …
1 Go to ing.com.au/everyday, open a new Orange Everyday and enter (Use referral system) in the promo box at the end of the online form - this part's really important otherwise neither of you will get your reward!
2 Deposit $1,000+ (such as their pay) from an external account into their new Orange Everyday account within any calendar month.
3 Open a Savings Maximiser (if they don't already have one) and make a deposit into this account.
4 Make 5+ settled (not pending) purchases using their new Orange Everyday card within any calendar month.
Once a friend completes the required steps, you'll both receive your reward. But tell them to be quick - they've only got until 31 March 2021 to complete all steps!