Most likely a targeted offer — I received this on my Amex Qantas Ultimate Credit Card.
It’s a decent deal for anyone with large bills or tax payments due before 30 November. The Sniip fee for Amex payments is 1.29% for personal payments, so this works out to an effective saving of around 3.79%. ATO payments are classified as business payments and attract a processing fee of 1.93%. The maximum spend to fully utilise the cashback is $2,000.
Total benefit for personal payments is $75.8 on $2000 spend, plus reward points for your Amex.
Good offer if you have received it but note the 1.29% rate can only be used per personal payment and excludes any business payments, as well as payments to the ATO.