When you get the option to get cash back at the grocery store, is that a credit charge or a cash advance?
JohnH asked:
When I go to pay for my groceries at the grocery store, I get the option to get $20, $40 or $60 back. If I decide to get some money back, do I have to pay interest on it right away, or is it treated just like a regular credit card charge?

You only get cash back with debit cards, not credit cards. You are not charged anything for getting that money.