The new Google Pay App is currently offering $1-$5 cash back for your first payment, plus up to $30 in referral rewards for sharing Google Pay with your friends.
New Offer as of 12/22/2020: Google Pay just updated their referral program again to provide a $1-$5 bonus for referees and a $1-$10 bonus for referrers after the referee makes their first payment, and you can refer up to 3 people through March 2, 2021. [Read More] Google Pay Promotions: $1-$5 Cash Back on First Payment + $1-$10 Referral Bonuses