Largely , what we should aim for payment of govt taxes using CC is:
1) Attain a small % profit.
2) Attain Fee waiver for that year for that card
3) Attain any milestone benefit(s)..
If the above three are met, then we can say operation suceess and patient is also doing fine..
Byproduct of this exercise is: Better limit enhancement offers in future from the Bank and thereby card upgrade offers as well..!! What else you want??
Enjoy..
NOTE: Cant expect huge profits for paying taxes..