Comment by kshacker

I paid my son's tuition yesterday at a 2.90% charge. Since the cashback of 2.625 is also on the charge, my net cost for about 10.6K tuition was about $15. I keep the money invested in SGOV (state tax exempt), for a month, I make that $15 anyways, and it helps me follow lessons from corporations - pay only at the latest due date without any charges.

So in this case there was no saving, just a deferment of payment, but if the charge was 2.5%, 2.2% or 1.9% (like I did for something else), you absolutely saved some money besides deferment.

I am not starving for pennies, but using the card to get 2.62% back has become a habit and until recently the highest I had paid was 2.75%, the 2.9% was just yesterday for the first time and rather than think more about the impact, I just paid it.