Would you pay taxes with a cc?

I just went to pay my income tax and saw that processing with a credit card has a 1.75% fee. I have a credit card (Citi DC) that gets 2% cashback. (actually 2.222% when you factor in the rewards+ card). I basically ended up paying an extra $23 to get $27 worth of cashback. Is there a reason why you wouldn't do this?