They aren't advertising it, but as the title says you can pay down student loans with a credit card. For me, this means my 8% interest is getting cut down due to 2% cash back. I did a test payment and there was no fee. Thought y'all would like to know.
Those were the assumptions I used in the calculator, but I had forgotten that you still had to meet the minimum monthly payment, so you're paying at an advanced schedule. If you're paying 1/28th each day so you don't have to send an extra check in February that puts you at an even more advanced schedule.