Credit cards are scary.
I got my bill for one of my credit cards today. The bill is 2,035. I called to verify this because I always fully pay my credit cards at the end of every billing cycle.
It turns out that my request to waive my annual membership fee of 1200 through my bonus points was not reflected in time. Because I didn't pay the whole bill & left 1200 remaining, I was penalized a whopping 800 finance charge!
So hypothetically, if I left even 10 unpaid, I would be assessed the 3.5% finance charge on the WHOLE BALANCE of the period, NOT the remaining balance. In this case, I would still have been assessed 800 if I left so much as 10 unpaid.
Of course I called the credit card company to straighten the whole thing up and they cancelled the hefty finance charge and waived the annual membership fee.
I write about this so that all other credit card users may be aware of this fluke with the system and stay on top of it.
Lesson: Pay off all your remaining balance at each billing period. If it's too much, be quick and transfer the balance to another credit card company because it'll save you money and heartaches. Or better yet, never use your credit card to pay for something you cannot afford to pay in full at the end of the billing cycle.