Greetings everyone, seems like a great increase on this offer :)
It may be worth referring to the $5 deal for any F&Q's which may have been answered in the comments.
Terms:
Cashback is limited to three transactions per account within the offer period (16/10/19 - 16/11/19). Note however that only one $10 cashback can be earned per Cashrewards account as per the promotional increase below.
** SPECIAL $10 PROMOTIONAL OFFER FROM 1:00PM AEDT OCT 29 to 11:59PM AEDT OCT 31 2019: **
Cashback will increase to $10 during this promotional period. The increased Cashback of $10 is payable only once per member during this period, and counts towards the 3 transaction limit mentioned previously. If you have previously availed of none, one or two $5 offers, then you are eligible. If you have previously availed of three $5 offers, then you are ineligible. Cashback will return to $5 from 01/11/19 to 16/11/19 inclusive.
A minimum spend of $50 in a single transaction is required to be eligible for Cashback.
Ensure you 'Tap' or select 'Credit' at payment. Choosing 'Savings' or 'Cheque' will make the transaction ineligible for Cashback. >Offer is valid at 750+ selected Caltex store locations nationally (valid only at outlet locations listed on Cashrewards). Excludes Fuel Pay.
As always, enjoy!
The cashback would go to whoever has linked the MC to their CR account. (Unless you mean you both have CR accounts, and both of you have linked the same MC.) i.e. CR has no way of knowing who used the card - only that someone did, that the MC is linked to a CR account, so that's the account that gets the $10 cashback.