it all depends on the card sometimes cards will get all back interest if you don't pay it off within the 12 months sometimes it won't all depends on a lot not enough info.
Read the T & C OP it will let you know or give them a call.
@bluedog1 somehting that doesnt have to do with your question. Since I saw that you have BBR MC by BofA. Do you have to have that design?? Or do you have an option to customize like wells fargo cards??
I think it's only that design but I'm not 100% sure. I was never offered the option to choose something different. I know you can customize BofA debit cards, although I never did.